Doc Code: PA..
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`PTO/A1N628(07~12)
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`.
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`Approved for use through 11/30/2014. OMB 0551-0035
`Document DESCUPUOH- Power of Attorney
`U.S. Patent and Trademark Office: U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection oi information unless i1 displays a valid OMB control number.
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`I hereby revoke all previous powers of attorney given in the application identified in the attached transmittal letter.
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`POWER OF ATTORNEY BY APPLICANT
`
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`8 l hereby appoint Practitioner(s) associated with the following Customer Number as my/our attorney(s) or agent(s). and to
`transact all business in the United States Patent and Trademark Office connected therewith for the application referenced
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`in the attached transmittal letter (form PTO/AlNBZA or equivalent):
`‘
`05251
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`
`OR
`I hereby appoint Practitioner(s) named below as mylour attorney(s) or agent(s). and to transact all business in the
`
`
`
`Cl
`United States Patent and Trademark Office connected therewith for the application referenced in the attached
`transmittal letter (form PTO/AiA/BZA or equivalent):
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`Eat The address associated with the above-mentioned Customer Number.
`OR
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` Please recognize or change the correspondence address for the application identified in the attached
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`transmittal letter to:
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`individual Name
`Firm or
`l
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`Address
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`B The address associated with Customer Number:
`OR
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`Telephone
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`I am the Applicant:
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`
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`E] inventor or Joint inventor
`DLegai Representative of a Deceased or Legally incapacitated inventor
`@Assignee or Person to Whom the inventor is Under an Obligation to Assign
`DPerson Who Otherwise Shows Sufficient Proprietary interest (e.g.. a petition under 37 CFR 1.46(b)(2) was
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`granted in the application or is concurrentl beino filed with this document)
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`SIGNATURE of Applicant for Patent
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`Signature
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`loate
`‘1 December 6, 2013
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`
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`Telephone
`1
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`Tme and Comnan
`'President AB LI'I'Y OPIO—EILECIRONICS TECHNOLOGY CO.
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`um: Signature - This form must be signed by the applicant in accordance with 37 CFR 1.33. See 37 CFR 1.4 for signature requirements and
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`certifications. Submit multiple forms for more than one signature, see below ‘.
`
` D *Total of
`terms are submitted.
`This collection at information is required by 37 CFR 1.31. 1.32 and 1.33. The iniomation is required to obtain or retain a benefit by the public which is to tile (and by the
`USPTO to process) an application. Confidentiality is governed by 35 U.S,C. 122 and 37 CFR 1.11 and 1.14. This collection is estimated to lake 3 minutes to complete,
`including gathering. preparing, and submitting the completed application form to the USPTO. Time will vary depending upon the individual case. Any comments on
`the amount of time you require to complete this form and/or suggestions {or reducing this burden. should be sent to the Chief Information Officer. US. Patent and
`Trademark Office. US. Department of Commerce. P.O. Box 1450. Alexandria. VA 223134450. DO NOT SEND FEES OR COMPLETED FORMS TO THIS
`ADDRESS. SEND To: Commissioner for Patents, P.O. Box 1450. Alexandria, VA 22313-1450.
`Ifyou need assistance in completing the form, call 1—800-PTO—9199 and select option 2.
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`Electronic Patent Application Fee Transmittal
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`Filing Date:
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`Title of Invention:
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`LENS ASSEMBLY
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`First Named Inventor/Applicant Name:
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`Hung-Kuo Yu
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`Attorney Docket Number:
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`SIIP.201299
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`Filed as Large Entity
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`Utility under 35 USC111(a) Filing Fees
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`Quantity
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`Description
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`Fee Code
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`Sub-Total in
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`USD($)
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`Miscellaneous-Filing:
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`Patent-Appeals-and-lnterference:
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`Sub-Total in
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`Post-Allowance-and-Post-lssuance:
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`Total in USD (5)
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`Miscellaneous:
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`Electronic Acknowledgement Receipt
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`
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`Title of Invention:
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`LENS ASSEMBLY
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`First Named Inventor/Appllcant Name.
`
`Hung-Kuo Yu
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`— Thomas Mega/Saundra Lewis
`
`Filing Date:
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`Time Stamp:
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`12:01:18
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`Application Type:
`
`Utility under 35 USC111(a)
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`Payment information:
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`The Director of the USPTO is hereby authorized to charge indicated fees and credit any overpayment as follows:
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`Charge any Additional Fees required under 37 C.F.R. Section 1.16 (National application filing, search, and examination fees)
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`9
`Charge any Additional Fees required under 37 C.F.R. Section 1.17 (Patent application and reexamination prfising fees
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`File Listing:
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`Document
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`File Size(Bytes)/
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`Multi
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`Pages
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`Application Data Sheet
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`SIIP201299ApplicationDataShe
`et.pdf
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`9b9e11601080a06a084ff8fabf1da4dbc5bb
`6aa0
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`Information:
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`This is not an USPTO supplied ADS fillable form
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`S||P201299Specification.pdf
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`48d1bdc6383477109a34ef53a003c7134cc
`
`671188
`
`Multipart Description/PDF files in .zip description
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`Drawings-only black and white line
`drawings
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`0a7703b49f829b193cc037279b818ec0145
`edea6
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`.
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`S||P201299DeclaratlonandASSIg
`n me nt. pdf
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`180070
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`7195066b94458fO7752123308d02ce9cd68
`e5fb9
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`
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`Fee Worksheet (SBO6)
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`fee-info.pdf
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`b3f6fbce300a86a8b7b6fe7918df0c0b934c
`e241
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`Total Files Size (in bytes)
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`1132541
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`New Applications Under 35 U.S.C. 111
`lfa new application is being filed and the application includes the necessary components for a filing date (see 37 CFR
`1.53(b)-(d) and MPEP 506), a Filing Receipt (37 CFR 1.54) will be issued in due course and the date shown on this
`Acknowledgement Receipt will establish the filing date of the application.
`
`National Stage of an International Application under 35 U.S.C. 371
`lfa timely submission to enter the national stage of an international application is compliant with the conditions of 35
`U.S.C. 371 and other applicable requirements a Form PCT/DO/EO/903 indicating acceptance of the application as a
`national stage submission under 35 U.S.C. 371 will be issued in addition to the Filing Receipt, in due course.
`
`This Acknowledgement Receipt evidences receipt on the noted date by the USPTO ofthe indicated documents,
`characterized by the applicant, and including page counts, where applicable. It serves as evidence of receipt similar to a
`Post Card, as described in MPEP 503.
`
`the application.
`
`New International Application Filed with the USPTO as a Receiving Office
`lfa new international application is being filed and the international application includes the necessary components for
`an international filing date (see PCT Article 11 and MPEP 1810), a Notification of the International Application Number
`and ofthe International Filing Date (Form PCT/RO/105) will be issued in due course, subject to prescriptions concerning
`national security, and the date shown on this Acknowledgement Receipt will establish the international filing date of
`
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`PTO/AlA/14 (12-13)
`Approved for use through 01/31/2014. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
`
`Application Data Sheet 37 CFR 1.76
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`.
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`.
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`Title of Invention
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`LENS ASSEMBLY
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`document may be printed and included in a paper filed application.
`
`The application data sheet is part of the provisional or nonprovisional application for which it is being submitted. The following form contains the
`bibliographic data arranged in a format specified by the United States Patent and Trademark Office as outlined in 37 CFR 1.76.
`This document may be completed electronically and submitted to the Office in electronic format using the Electronic Filing System (EFS) or the
`
`Secrecy Order 37 CFR 5.2
`
`37 CFR 5.2 (Paper filers only. Applications that fall under Secrecy Order may not be filed electronically.)
`CI Portions or all of the application associated with this Application Data Sheet may fall under a Secrecy Order pursuant to
`
`Inventor Information:
`
`Inventor
`
`1
`
`Legal Name
`
`-———-
`Residence Information (Select One) 0 us Residency @ Non us Residency 0 Active us Military Service
`
`Mailing Address of Inventor:
`
`
`
`Address 1
`
`Address 2
`
`City
`Postal Code
`
`Taichung City
`
`Inventor
`
`2
`
`Legal Name
`
`Prefix Given Name
`
`2F., No. 33, Keya Rd., Daya Dist.
`
`State/Province
`TW
`
`Middle Name
`
`Family Name
`
`Suffix
`
`Residence Information (Select One) 0 us Residency @ Non us Residency 0 Active us Military Service
`
`Mailing Address of Inventor:
`
`Inventor Information blocks may be
`Inventors Must Be Listed - Additional
`All
`generated within this form by selecting the Add button.
`
`Correspondence Information:
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`EFS Web 2.2.10
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`PTO/AlA/14(12-13)
`Approved for use through 01/31/2014. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
`
`Application Data Sheet 37 CFR 1.76
`
`.
`
`.
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`Title of Invention
`
`LENS ASSEMBLY
`
`
`
`Enter either Customer Number or complete the Correspondence Information section below.
`For further information see 37 CFR1.33(a).
`
`|:| An Address is being provided for the correspondence Information of this application.
`
`Application Information:
`
`Title of the Invention
`
`LENS ASSEMBLY
`
`Attorney Docket Number— Small Entity Status Claimed
`Application Type
`Nonprovisional
`
`|:|
`
`Total Number of Drawing Sheets (if any) _ Suggested Figure for Publication (if any) -
`Filing By Reference:
` Only compete this section when filing an application by reference under 35 U.S.C. 1 11(c) and 37 CFR1.57(a). Do not complete this section if
`
`
`application papers including a specification and any drawings are being filed. Any domestic benefit or foreign priority information must be
`provided in the appropriate section(s) below (i.e., ”Domestic Benefit/National Stage Information" and "Foreign Priority Information").
`
` For the purposes ofa filing date under 37 CFR 1.53(b), the description and any drawings ofthe present application are replaced by this
`
`reference to the previously filed application, subject to conditions and requirements of 37 CFR1.57(a).
`
`
`Filing date (YYYY-MM-DD)
`
`Intellectual Property Authority or Country
`
`Application number of the previously
`filed application
`
`Publication Information:
`
`|:| Request Early Publication (Fee required at time of Request 37 CFR 1.219)
`
`publication at eighteen months after filing.
`
`Request Not to Publish. I hereby request that the attached application not be published under
`35 U.S.C. 122(b) and certify that the invention disclosed in the attached application has not and will not be the
`subject of an application filed in another country, or under a multilateral international agreement, that requires
`
`Representative Information:
`
`Representative information should be provided for all practitioners having a power of attorney in the application. Providing
`this information in the Application Data Sheet does not constitute a power of attorney in the application (see 37 CFR 1.32).
`Either enter Customer Number or complete the Representative Name section below. If both sections are completed the customer
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`Number will be used for the Representative Information during processing.
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`EFS Web 2.2.10
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`PTO/AlA/14(12-13)
`Approved for use through 01/31/2014. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
`
`Application Data Sheet 37 CFR 1.76
`
`.
`
`.
`
`Title of Invention
`
`LENS ASSEMBLY
`
`05251
`
`Please Select One:
`Customer Number
`
`(9 Customer Number
`
`0 us Patent Practitioner 0 Limited Recognition (37 CFR 11.9
`
`Domestic Benefit/National Stage Information:
`This section allows for the applicant to either claim benefit under 35 U.S.C. 119(e), 120, 121, or 365(c) or indicate National Stage
`entn/ from a PCT application. Providing this information in the application data sheet constitutes the specific reference required
`by 35 U.S.C. 119(e) or 120, and 37 CFR 1.78.
`When referring to the current application, please leave the application number blank.
`
`Application Number
`
`Continuity Type
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`Prior Application Number
`
`Filing Date (YYYY-MM-DD)
`
`Additional Domestic Benefit/National Stage Data may be generated within this form
`
`by selecting the Add button.
`Add button.
`
`Foreign Priority Information:
`
`This section allows for the applicant to claim priority to a foreign application. Providing this information in the application data sheet
`
`constitutes the claim for priority as required by 35 U.S.C. 119(b) and 37 CFR 1.5'5(d). When priority is claimed to a foreign application
`that is eligible for retrieval under the priority document exchange program (PDX)I the information will be used by the Office to
`automatically attempt retrieval pursuant to 37 CFR 1.55(h)(1) and (2). Under the PDX program, applicant bears the ultimate
`
`responsibility for ensuring that a copy of the foreign application is received by the Office from the participating foreign intellectual
`
`property office, or a certified copy of the foreign priority application is filed, within the time period specified in 37 CFR 1.55(g)(1).
`
`Application Number
`
`Countryl
`
`Filing Date (YYYY-MM-DD)
`
`Access Codei(if applicable)
`
`Additional Foreign Priority Data may be generated within this form by selecting the
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`EFS Web 2.2.10
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`PTO/AlA/14 (12-13)
`Approved for use through 01/31/2014. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
`
`-
`
`-
`
`
`
`Application Data Sheet 37 CFR 1.76—
`
`Title of Invention
`
`LENS ASSEMBLY
`
`Statement under 37 CFR 1.55 or 1.78 for AIA (First Inventor to File) Transition
`Applications
`
`This application (1) claims priority to or the benefit of an application filed before March 16, 2013 and (2) also
`contains, or contained at any time, a claim to a claimed invention that has an effective filing date on or after March
`|:| 16, 2013.
`NOTE: By providing this statement under 37 CFR 1.55 or 1.78, this application, with a filing date on or after March
`
`16, 2013, will be examined under the first inventor to file provisions of the AIA.
`
`Authorization to Permit Access:
`
`|Z Authorization to Permit Access to the Instant Application by the Participating Offices
`
`If checked, the undersigned hereby grants the USPTO authority to provide the European Patent Office (EPO),
`the Japan Patent Office (JPO), the Korean Intellectual Property Office (KIPO), the World Intellectual Property Office (WIPO),
`and any other intellectual property offices in which a foreign application claiming priority to the instant patent application
`is filed access to the instant patent application. See 37 CFR 1.14(c) and (h). This box should not be checked if the applicant
`does not wish the EPO, JPO, KIPO, WIPO, or other intellectual property office in which a foreign application claiming priority
`to the instant patent application is filed to have access to the instant patent application.
`
`In accordance with 37 CFR 1.14(c), access may be provided to information concerning the date 0 ffiling this Authorization.
`
`In accordance with 37 CFR 1.14(h)(3), access will be provided to a copy of the instant patent application with respect
`to: 1) the instant patent application-as-filed; 2) any foreign application to which the instant patent application
`claims priority under 35 U.S.C. 119(a)—(d) if a copy of the foreign application that satisfies the certified copy requirement of
`37 CFR 1.55 has been filed in the instant patent application; and 3) any US. application-as-filed from which benefit is
`sought in the instant patent application.
`
`Applicant Information:
`
`Providing assignment information in this section does not substitute for compliance with any requirement of part 3 of Title 37 of CFR
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`to have an assignment recorded by the Office.
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`EFS Web 2.2.10
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`PTO/AlA/14 (12-13)
`Approved for use through 01/31/2014. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
`
`Application Data Sheet 37 CFR 1.76
`
`.
`
`.
`
`Title of Invention
`
`LENS ASSEMBLY
`
`If the applicant is the inventor (or the remaining joint inventor or inventors under 37 CFR 1.45), this section should not be completed.
`The information to be provided in this section is the name and address of the legal representative who is the applicant under 37 CFR
`1.43; or the name and address of the assignee, person to whom the inventor is under an obligation to assign the invention, or person
`who othen/vise shows sufficient proprietary interest in the matter who is the applicant under 37 CFR 1.46. If the applicant is an
`applicant under 37 CFR 1.46 (assignee, person to whom the inventor is obligated to assign, or person who othen/vise shows sufficient
`proprietary interest) together with one or more joint inventors, then the joint inventor or inventors who are also the applicant should be
`identified in this section.
`
`0 Legal Representative under 35 U.S.C. 117
`
`0 Joint Inventor
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`0 Person to whom the inventor is obligated to assign.
`
`0 Person who shows sufficient proprietary interest
`
`If applicant is the legal representative, indicate the authority to file the patent application, the inventor is:
`
`
`
`Name of the Deceased or Legally lncapacitated Inventor :
`
`If the Applicant is an Organization check here.
`
`organization Name
`
`ABILITY OPTO-ELECTRONICS TECHNOLOGY 00., LTD.
`
`Mailing Address Information For Applicant:
`
`Address 1
`
`Address 2
`
`City
`
`Countn/I
`
`TW
`
`Email Address
`
`2F., No. 33, Keya Rd., Daya Dist.
`
`Taichung City
`
`State/Province
`
`Postal Code
`
`42881
`
`Additional Applicant Data may be generated within this form by selecting the Add button.
`
`Assignee Information including Non-Applicant Assignee Information:
`
`Providing assignment information in this section does not subsitute for compliance with any requirement of part 3 of Title 37 of CFR to
`have an assignment recorded by the Office.
`
`Assignee
`
`Complete this section if assignee information, including non-applicant assignee information, is desired to be included on the patent
`application publication . An assignee-applicant identified in the "Applicant Information" section will appear on the patent application
`publication as an applicant. For an assignee-applicant, complete this section only if identification as an assignee is also desired on the
`
`patent application publication. If the Assignee or Non-Applicant Assignee is an Organization check here.
`
`EFS Web 2.2.10
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`PTO/AlA/14(12-13)
`Approved for use through 01/31/2014. OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of information unless it contains a valid OMB control number.
`
`Application Data Sheet 37 CFR 1.76
`
`.
`
`.
`
`Title of Invention
`
`LENS ASSEMBLY
`
`Middle Name
`
`Family Name
`
`Suffix
`
`Mailing Address Information For Assignee including Non-Applicant Assignee:
`
`selecting the Add button.
`
`Email Address
`
`Additional Assignee or Non-Applicant Assignee Data may be generated within this form by
`
`—
`
`Signature:
`
`NOTE: This form must be signed in accordance with 37 CFR 1.33. See 37 CFR 1.4 for signature requirements and
`certifications.
`
`Additional Signature may be generated within this form by selecting the Add button.
`
`This collection of information is required by 37 CFR 1.76. The information is required to obtain or retain a benefit by the public which
`is to file (and by the USPTO to process) an application. Confidentiality is governed by 35 U.S.C. 122 and 37 CFR 1.14. This
`collection is estimated to take 23 minutes to complete, including gathering, preparing, and submitting the completed application data
`sheet form to the USPTO. Time will vary depending upon the individual case. Any comments on the amount of time you require to
`complete this form and/or suggestions for reducing this burden, should be sent to the Chief Information Officer, US. Patent and
`Trademark Office, US. Department of Commerce, PO. Box 1450, Alexandria, VA 22313-1450. DO NOT SEND FEES OR
`COMPLETED FORMS TO THIS ADDRESS. SEND TO: Commissioner for Patents, P.O. Box 1450, Alexandria, VA 22313-1450.
`
`EFS Web 2.2.10
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`Privacy Act Statement
`
`The Privacy Act of 1974 (PL 93-579) requires that you be given certain information in connection with your submission of the attached form related to
`a patent application or patent. Accordingly, pursuant to the requirements of the Act, please be advised that:
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`of this information is 35 U.S.C. 2(b)(2); (2) furnishing of the information solicited is voluntary; and (3) the principal purpose for which the information is
`used by the US. Patent and Trademark Office is to process and/or examine your submission related to a patent application or patent.
`If you do not
`furnish the requested information, the US. Patent and Trademark Office may not be able to process and/or examine your submission, which may
`result in termination of proceedings or abandonment of the application or expiration of the patent.
`
`The information provided by you in this form will be subject to the following routine uses:
`
`1.
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`The information on this form will be treated confidentially to the extent allowed under the Freedom of Information Act (5 U.S.C. 552)
`and the Privacy Act (5 U.S.C. 552a). Records from this system of records may be disclosed to the Department of Justice to determine
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`A record in this system of records may be disclosed, as a routine use, to another federal agency for purposes of National Security
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`disclosure shall not be used to make determinations about individuals.
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`A record from this system of records may be disclosed, as a routine use, to the public after either publication of the application pursuant
`to 35 U.S.C. 122(b) or issuance ofa patent pursuant to 35 U.S.C. 151. Further, a record may be disclosed, subject to the limitations of 37
`CFR 1.14, as a routine use, to the public if the record was filed in an application which became abandoned or in which the proceedings were
`terminated and which application is referenced by either a published application, an application open to public inspections or an issued
`patent.
`
`A record from this system of records may be disclosed, as a routine use, to a Federal, State, or local law enforcement agency, if the
`
`EFS Web 2.2.10
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`LENS ASSEMBLY
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`CROSS-REFERENCE TO RELATED APPLICATION
`
`This application.
`
`claims priority of Taiwanese
`
`Application No. 102131525, filed on September 2, 2013.
`
`VI
`
`BACKGROUND OF THE INVENTION
`
`1. Field of the Invention
`
`The present invention relates to a lens assembly,
`
`more particularly to a compact wide—angle four—piece
`
`imaging lens assembly.
`
`2. Description of the Related Art
`
`A conventional imaging lens assembly is frequently
`
`adoptedijianelectronicproduct,suchaseamobilephone,
`
`a smart phone, a tablet computer, a notebook computer,
`
`a camera and so forth. With the continuous improvement
`
`ofelectronicproducts,atendencytowardcompactdesign
`
`while maintaining high performance of the electronic
`
`products
`
`is desired. Accordingly,
`
`an imaging lens
`
`assembly is also developed toward a
`
`trend of being
`
`compact and having thin dimensions. Meanwhile, for the
`
`purpose of raising resolving power,
`
`an imaging lens
`
`assembly is required to progress to have a wider angle
`
`of view.
`
`Even though conventional imaging lens assemblies,
`
`such as
`
`the optical
`
`lens assemblies disclosed in
`
`[0 U1
`
`Taiwanese Patent Application Publication Numbers
`
`
`
`201215941, 201224568 and 201239443, are provided with
`
`four-piece
`
`lens
`
`frameworks,
`
`these
`
`imaging
`
`lens
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`[\l)
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`UI
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`l
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`0
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`UI
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`assemblies may not further satisfyra desire for compact
`
`design and a wider angle of view.
`
`Accordingly,inordertoenableanelectronicdevice
`
`to achieve effects of both compact design and high
`
`performance,awide—angleimaginglensassemblycapable
`
`of
`
`improving resolving power
`
`thereof
`
`and having
`
`miniature dimensions is desired on the market.
`
`SUMMARY OF THE INVENTION
`
`Therefore, an object of the present invention is to
`
`provide a four—piece imaging lens assembly which has
`
`compact and thin.dimensions and which has axnider angle
`
`of view for improving resolving power thereof.
`
`Accordingly,alensassemblyofthepresentinvention
`
`comprises a lens set and a non—adjustable diaphragm.
`
`The lens set includes a first lens,
`
`a second lens,
`
`a
`
`third lens and a fourth lens arranged in sequence from
`
`an object side to an image side along an optical axis
`
`of the lens assembly. The first lens has a positive
`
`optical power adjacent to the optical axis, and has a
`
`convexobject—sidesurfacewhichfacestheobjectside,
`
`and an image—side surface which faces the image side.
`
`At
`
`least one of
`
`the object—side
`
`surface and the
`
`image—side surface of the first lens is an aspherical
`
`surface. The second lens has a positive optical power
`
`{V U!
`
`adjacenttotheopticalaxis,andhasaconveximage—side
`
`surface which faces the image side, and an object—side
`
`surface which faces the object side. At least one of
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`U)
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`10
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`the object—side surface and the image—side surface of
`
`the second lens iseuiaspherical surface. The third lens
`
`has a negative optical power adjacent to the optical
`
`axis, and hasaiconcave object—side surface which.faces
`
`the object side, and a convex image—side surface which
`
`faces the image side. At least one of the object—side
`
`surface and the image—side surface of the third lens
`
`is antaspherical surface. The fourth lens hassapositive
`
`optical power adjacent to the optical axis, and has an
`
`image—side surface which faces the image side and.which
`
`has
`
`a concave portion around the optical axis,
`
`an
`
`object—side surface which faces the object side, and
`
`a
`
`peripheral
`
`surface which
`
`interconnects
`
`the
`
`
`object—side surface and the image—side surface. Each
`
`of the object—side surface and the image—side surface
`
`of the fourth lens is an aspherical surface. At least
`
`oneoftheobject—sidesurfaceandtheimage—sidesurface
`
`of
`
`the fourth lens has an inflection point
`
`located
`
`between the optical axis and the peripheral surface.
`
`The non—adjustable diaphragm is located between the
`
`object side and the second lens of the lens set. The
`
`lens assembly satisfies
`
`lS<HFOV/f<50,
`
`in which, HFOV represents one half of a maximum angle
`
`of view of the lens assembly and has a unit of degree,
`
`and f represents a focal
`
`length of the lens assembly
`
`and has a unit of millimeter.
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`BRIEF DESCRIPTION OF THE DRAWINGS
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`Other
`
`features
`
`and advantages of
`
`the present
`
`inventionwillbecomeapparentinthefollowingdetailed
`
`thr
`pr fcrr d mbodiments with
`
`description of
`
`th
`
`reference to the accompanying drawings, of which:
`
`Figure liseaschematic diagranlillustratingeifirst
`
`preferred embodiment of a lens assembly according to
`
`the present
`
`invention;
`
`Figure
`
`2
`
`illustrates
`
`simulation
`
`results
`
`of
`
`IO
`
`astigmatismaberrationanddistortionaberrationofthe
`
`first preferred embodiment;
`
`Figure 3illustrates simulation result<3fspherical
`
`aberration of the firs: preferred embodiment;
`
`Figure4is;aschematicdiagramillustratingeasecond
`
`preferred embodiment of a lens assembly according to
`
`
`
`the present
`
`invention;
`
`Figure
`
`5
`
`illustrates
`
`simulation
`
`results
`
`of
`
`astigmatismaberrationanddistortionaberrationofthe
`
`second preferred embodiment;
`
`Figure 6illustrates simulation.result<3fspherical
`
`aberration of the second preferred embodiment;
`
`Figure 7jfisa schematic diagrantillustratingaithird
`
`preferred embodiment of a lens assembly according to
`
`the present
`
`invention;
`
`l\J UI
`
`Figure
`
`8
`
`illustrates
`
`simulation
`
`results
`
`of
`
`astigmatismaberrationanddistortionaberrationofthe
`
`third preferred embodiment; and
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`U]
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`LII
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`10
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`Figure 9illustrates simulation resulttofspherical
`
`aberration of the third preferred embodiment.
`
`DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
`
`Referring to FigureZL a first preferred.embodiment
`
`of'a lens assembly, according to the present invention,
`
`comprises a lens set 1, a non-adjustable diaphragm 2,
`
`and a filter lens 3.
`
`The lens set 1
`
`includes a first lens 11,
`
`a second
`
`lens 12, a third lens 13 and a fourth lens 14 arranged
`
`in sequence from.an object side to an image side along
`
`an optical axis L of the lens assembly. The first lens
`
`11 has a positive optical power adjacent,to the optical
`
`axis L, and has a convex object—side surface 111 which
`
`faces the object side, and an image—side surface 112
`
`which faces
`
`the image side. At
`
`least one of
`
`the
`
`object—side surface 111 and the image—side surface 112
`
`ofthefirstlenslj.isanasphericalsurface.Thesecond
`
`lens 12 has a positive optical power adjacent to the
`
`optical axis L, and has a convex image—side surface 121
`
`which faces the image side, and an object—side surface
`
`122 which faces the object side. At least one of the
`
`object-side surface 121 and the image—side surface 122
`
`ofthesecondlens12:hsanasphericalsurface.Thethird
`
`lens 13 has a negative optical power adjacent to the
`
`[V UI
`
`optical axis L, and has a concave object—side surface
`
`l31whichfacestheobjectside,andeaconveximage—side
`
`surface 132 which faces the image side. At least one
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`oftheobject—sidesurface131andtheimage—sidesurface
`
`132 of the third lens 13 is an aspherical surface. The
`
`fourth lens 14 has a positive optical power adjacent
`
`to the optical axis L, and has an image~side surface
`
`141 which faces the image side and which has a concave
`
`portionaroundtheopticalaxisL,anobjectvsidesurface
`
`142whichfacestheobjectside,andatwripheralsurface
`
`143whichinterconnectstheobject—sidesurfacel41and
`
`the image—side surface 142. Each of
`
`the object-side
`
`surface14landtheimmge—sidesurface142<mfthefourth
`
`lens 14 is an aspherical surface. At least one of the
`
`object—side surface 141 and the image—side surface 142
`
`of the fourth lens 14 has an inflection point located
`
`between the optical axis L and the peripheral surface
`
`143.
`
`The non—adjustable diaphragm 2 is located between
`
`the object side and the second lens 12 o