(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2011/0249346A1
`Tang et al.
`(43) Pub. Date:
`Oct. 13, 2011
`
`US 20110249346A1
`
`(54) IMAGING LENS ASSEMBLY
`(75) Inventors:
`Hsiang Chi Tang, Taichung City
`(TW); Chun Shan Chen, Taichung
`City (TW); Tsung Han Tsai,
`Taichung City (TW)
`
`(73) Assignee:
`
`LARGAN PRECISION CO.,
`LTD., Taichung City (TW)
`
`(21) Appl. No.:
`
`12/823,713
`
`(22) Filed:
`(30)
`
`Jun. 25, 2010
`Foreign Application Priority Data
`
`Apr. 8, 2010 (TW) ................................. O991 10860
`
`Publication Classification
`
`(51) Int. Cl.
`GO2B 9/60
`
`(2006.01)
`
`(52) U.S. Cl. ........................................................ 359/764
`
`ABSTRACT
`(57)
`This invention provides an imaging lens assembly including
`five lens elements with refractive power, in order from an
`object side toward an image side: a first lens with positive
`refractive power having a convex object-side Surface, a sec
`ond lens with negative refractive power, a third lens having a
`concave object-side Surface, a fourth lens with positive
`refractive power having an object-side Surface and a convex
`image-side Surface, and at least one of both surfaces thereof
`being aspheric, a fifth lens with negative refractive power
`having a concave image-side Surface with at least one inflec
`tion point formed thereon. An aperture stop is positioned
`between an imaged object and the second lens. The imaging
`lens assembly further comprises an electronic sensor on
`which an object is imaged. With Such arrangement, the size
`and the optical sensitivity of the lens assembly can be
`reduced. A high image resolution is also obtained.
`
`101
`102
`
`Apple v. Corephotonics
`IPR2019-00030
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`Patent Application Publication
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`US 2011/0249346 A1
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`s S
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`IPR2019-00030
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`
`

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`Patent Application Publication
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`Oct. 13, 2011 Sheet 2 of 25
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`US 2011/0249346 A1
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`Apple V. Corephotonics
`IPR2019—00030
`
`Exhibit 2008 Page 3 0f 36
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 3 of 36
`
`
`
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 3 of 25
`
`US 2011/0249346 A1
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 4 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 4 of 25
`
`US 2011/0249346 A1
`
`
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 5 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 5 of 25
`
`US 2011/0249346 A1
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 6 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 6 of 25
`
`US 2011/0249346 A1
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`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 7 of 36
`
`

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`Patent Application Publication
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`Oct. 13, 2011 Sheet 7 of 25
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`US 2011/0249346 A1
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`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 8 of 36
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`Oct. 13, 2011 Sheet 8 of 25
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`US 2011/0249346 A1
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`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 9 of 36
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`Oct. 13, 2011 Sheet 9 of 25
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`US 2011/0249346 A1
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`IPR2019-00030
`Exhibit 2008 Page 10 of 36
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`Oct. 13, 2011 Sheet 10 of 25
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`US 2011/0249346 A1
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`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 11 of 36
`
`

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`Patent Application Publication
`
`Oct. 13, 2011 Sheet 11 of 25
`
`US 2011/0249346 A1
`
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`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 12 of 36
`
`

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`Patent Application Publication
`
`Oct. 13, 2011 Sheet 12 of 25
`
`US 2011/0249346 A1
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`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 13 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 13 of 25
`
`US 2011/0249346 A1
`
`TABLE 1.
`(Embodiment 1)
`f = 4.34 mm, Fno = 2.85, HFOV 33.2 deg.
`Curvature Radius Thickness Material
`Index
`
`Surface #
`
`fG
`
`O
`Object
`Plano
`1.
`LenSl
`1424400 (ASP)
`2 e -43.791 100 (ASP)
`3
`Ape. Stop
`Plano
`4
`Lens 2
`-15.543700 (ASP)
`5
`4.287000 (ASP)
`6
`-3.112200 (ASP)
`7
`-3.973 100 (ASP)
`8
`-3.011300 (ASP)
`9
`-0-881520 (ASP)
`10
`-2.171820 (ASP)
`11
`1674970 (ASP)
`Plano
`Plano
`Plano
`
`Lens 3
`
`Lens 4
`
`LenS 5
`
`
`
`R-filter
`
`Image
`
`Infinity
`0.562
`-0.010
`0.096
`0.351
`0.559
`0.302
`0.274
`0.790
`0.250
`0.360
`0700
`0.300
`0.334
`
`Plastic
`
`1544
`
`55.9
`
`2.55
`
`Plastic
`
`E.632
`
`23.4
`
`-5.28
`
`Plastic
`
`1632
`
`23.4
`
`-26.30
`
`Plastic
`
`1544
`
`55.9
`
`2.03
`
`Plastic
`
`1530
`
`55.8
`
`-1.73
`
`Glass
`
`1517
`
`64.2
`
`Fig.7
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 14 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 14 of 25
`
`US 2011/0249346 A1
`
`
`
`TABLE 2A
`
`
`
`1.03737E-01
`
`3.47995E-Ol
`
`
`
`Aspheric Coefficients
`2
`
`
`-2.47567E+00
`-5 .03747E+00 -9.00000E+01 -9.00000E+01 2.12386E+01
`
`—5.07469E-02 9.34335E-03 3.54189E-02 -1.85260E-Ol
`
` 2.14865E—01
`3 .28807E-02 -1,30889E-Ol
`-2.00756E-01
`6.72433E-02 3 .30155E-02
`
`2.35011E—01
`-2.65004E-01
`2.41725E-01
`
`-2.26327E-01
`3.66614E—01
`—9.2883 lE—Ol
`-2.81785E-01
`
`
`-2.95155E-013 .7891 1E-02 3.31819E—01
`
`
`
`-1.40446E-02 7.10802E—02 -7.15280E-01 -1.65618E-01
`
`8
`9
`10
`
`1.30836E+00
`2.54690E-100
`-3.55591E+00 -2.10680E+01
`
`
`
`
`-1.07942E-01
`-6.26096E—02 -1.85407E—02
`8.04230E—03
`
`3.8469lE-02 9‘50058E-02 -2.83403E-O2
`-9 .36666E—02
`-2.24302E—01 -l.17097E-01 1.23311E-02
`1.46098E-01
`
`
`
`-4.68426E-02
`3 .02684E—01 6.74457E-02 -7. 53760E-04
`
`
`
`
`
`
`1.42201E+00 4.36516E-01 4.39597E—Ol
`
`
`
`2.44880E—02 -l .70694E-01 -l.72145E-02 ‘ -2.09606E-04
`
`
`
`
` 7
`
`3 .64635E—02
`
`1.49999E-03
`
`2.15227E—05
`
`Fig.8A
`
`TABLE 2B
`
`
`Aspheric Coefficients
`
`Surface # L
`11
`k
`=
`-1.45741E+01
`
`A1 =
`
`A4 =
`
`-5.89149E—02
`
`
`
`A6 =
`
`A7 =
`
`A8 =
`
`A9 =
`
`A10 =
`
`All =
`
`A12 =
`A13 =
`A14 =
`
`1.64455E—02
`
`-5.94048E-03
`
`1.44523E-03
`
`-2.18721E-04
`
`1.54195E—05
`
`Flg . 8B
`
`Apple V. Corephotonics
`IPR2019-00030
`
`Exhibit 2008 Page 15 0f 36
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 15 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 15 of 25
`
`US 2011/0249346 A1
`
`TABLE 3
`(Embodiment 2)
`f = 4.19 mm, Fino - 2.60. HFOV - 34.0 deg.
`Curvature Radius Thickness
`
`Plano
`1571920 (ASP)
`-23.121400 (ASP)
`Plano
`12.150700 (ASP)
`2.853260 (ASP)
`-6.283400 (ASP)
`-12.432900 (ASP)
`-2.500840 (ASP)
`-0.980050 (ASP)
`-11. 77200 (ASP)
`1.469280 (ASP)
`
`Infinity
`0.676
`
`0.258
`
`Plastic
`
`Plastic
`
`
`
`0.283
`
`
`
`1517
`
`64.2
`
`Surface #
`
`
`
`
`
`Object
`Lens 1
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`9
`
`12
`13
`14
`
`IR-filter
`
`Image
`
`Plano
`Plano
`
`Fig.9
`
`Focal
`length
`
`
`
`2.55
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 16 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 16 of 25
`
`US 2011/0249346 A1
`
`TABLE 4A
`Aspheric Coefficients
`6
`5
`2
`4
`Surface #
`k = -6.50001E--00-100000E-00-10000OE--00-7.60424E--OOOOOOOOE-HOO
`A4 = | 200906E-01 -6.63627E-02 -8.73985E-02-1559 OE-02 -2.17817E-01
`A6 = -1.823O4E-O 164269E-O 2.18896E-01 9.8594E-02 -14.9415E-0
`
`A8 - 17631E-01-297652E-01-779705E-02-1.12267E-032,42150E-ol
`A10= -1.32426E-0||3.16695E-01-444971E-01-2.20387E-01-2.90.155E-01
`Al2= 3.44944E-02-182173E-01 1.02314E+003.80280E-01 | 1.43366E-01
`Al4=125591E-03441557E-02-6.59333E-01-175174E-ol
`Surface i
`7
`8
`9
`10
`k = 0.00000E+00 2.30246E+00 -3.32916E-00-8.80951E+00
`A4 = -1.48716E-01 2.07 187E-02 -8.800.91 E-02-110587E-02
`A6 = -8.37144E-02 || 4.03194E-02 100182E-01 -2.2986E-02
`A8 = | 1,082.56E-01 -204141E-01 -982521E-02
`A10= -2,95477E-023.06164E-016.46503E-02-104015E-03
`
`A12= . 166616E-02 -1.72754E-01-195080E-02-176243E-04
`A14-
`3.45768E-02 18825OE-03 2.78399E-05
`
`Fig.10A
`
`TABLE 4B
`Aspheric Coefficients
`Surface #
`
`-9.60219E-00
`
`-5.5214OE-02
`
`178677E-02
`
`-6.880 OE-03
`
`153372E-03
`
`- 191127E-04
`
`1.05203E-05
`
`Fig.10B
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 17 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 17 of 25
`
`US 2011/0249346 A1
`
`TABLES
`(Embodiment 3)
`f F 4.35 mm, Fno = 2.80. HFOV = 33.2 deg.
`
`Surface #
`
`
`
`Object
`Lens 1
`
`Curvature Radius Thickness Material
`Plano
`Infinity
`142730 (ASP)
`0636
`-18.098000 (ASP)
`0.016
`
`Plastic
`
`
`
`Index
`
`2.45
`
`
`
`
`
`
`
`
`
`
`
`-14976300 (ASP)
`3.368400 (ASP)
`Lens 3 || -5.243800 (ASP)
`-6.016600 (ASP)
`-1.873900 (ASP)
`-0.930010 (ASP)
`24.743600 (ASP)
`1.217630 (ASP)
`Plano
`Plano
`Plano
`
`IR-filter
`
`
`
`0.300
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 18 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 18 of 25
`
`US 2011/0249346 A1
`
`TABLE 6A
`Aspheric Coefficients
`Surface #
`1.
`2
`4.
`5
`6
`k = -5.26517E-00-100000E--011.OOOOOE-00-6.824.3E-01 OOOOOOE-HOO
`A4 = 2.15207E-01 -6.792.63E-02-204501E-02 2.93137E-02 -2.72749E-01
`
`A6 = -1.82036E-01 118010E-01201484E-o 176780E-01-133984E-01
`As = 162877E-01-255074E-ol-5.45787E-02
`3.11282E-01
`A10= -1,39998E-os. 17407E-0-4,922.83E-02872.16E-0s-508400E-01
`
`A12= 2.6429E-02 -2.73173E-01 1.1.1138E-00 || 3.36307E-01 2.56690E-01
`A4= -6.4858E-03 1.0582OE-0 -6.96535E-01-170744E-O1
`
`Surface #
`
`7
`
`8
`
`9
`
`10
`
`k = 0.00000E+006.51876E-01-367070E+009.99629E-0
`A4 = -2.19697E-01 177486E-02 -7.16624E-02-19938E-02
`A6 = - 64572E-02 6.592.71 E-02 REE
`A8 -
`9.06411E-02 -2.06221E-01-11581OE-01 119631E-02
`AO= -6.21708E-02 || 3.01437E-01 6.69969E-02 -8.02955E-04
`5.70379E-02-17558OE-01 - 175127E-02-224956E-04
`371142E-02 133893E-03 2.9441OE-05
`
`A14-
`
`Fig.12A
`
`
`
`TABLE 6B
`Aspheric Coefficients
`Surface #
`11
`k =
`-8.93377E-00
`A1 =
`
`-6.26500E-02
`
`154085E-02
`
`-5.765OOE-03
`
`1.43824E-03
`
`A3 =
`A4 in
`A5 =
`A6 =
`A7 =
`A8 =
`A9 =
`A10 =
`A11 =
`A12 - || -2.09108E-04
`A13 =
`A14 F
`
`Fig.12B
`
`143252E-05
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 19 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 19 of 25
`
`US 2011/0249346 A1
`
`TABLE 7
`(Embodiment 4)
`f = 4.33 mm, Fino a 2.60, HFOV = 33.2 deg.
`Curvature Radius Thickness Material
`Index
`
`Abbe i ?G
`
`Surface #
`
`O
`1.
`2
`3
`4
`5
`6
`7
`8
`9
`10
`11
`12
`13
`14
`
`Object
`Lens 1
`
`|
`
`Ape. Stop
`Lens 2
`
`Lens 3
`
`Lens 4
`
`Lens 5
`
`IR-filter
`
`Image
`
`Plano
`1.396360 (ASP)
`10.488800 (ASP)
`Plano
`10.467100 (ASP)
`2.535670 (ASP)
`- 14.28.5700 (ASP)
`-8.1935.00 (ASP)
`-2.028110 (ASP)
`-1.064940 (ASP)
`9.881400 (ASP)
`1.309360 (ASP)
`Plano
`Plano
`Plano
`
`1544
`
`55.9
`
`Plastic
`
`
`
`55.8
`
`Glass
`
`1517
`
`64.2
`
`0.700
`0.300
`0.414
`
`Fig.13
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 20 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 20 of 25
`
`US 2011/0249346 A1
`
`TABLE 8A
`
`
`Aspheric Coefficients
`
`Surface#
`1
`2
`4
`5
`6
`
`
`k =
`-5.00633E+00 -1.00000E+00 -1.00000E+00 -7.49719E+00 0.00000E+00
`
`A4=
`
`232204301 -7.35021E-02 -1.28418E-01 1.00889E-02 -1.52207E-01
`
`
`A6= —1.58394E—01
`1.39743E-01
`2.25881E-01
`1.77925E-01 -1.10405E-01
`
`
`
`
`A8=
`1.73248E-01 -2.03752E-01
`
`A10=
`-1.22634E-01 3.14988E-01 -5.50431E-01 -1.57746E-01-2.75464E-01
`
`A12=
`5.87457E-02 -3.54l65E-01 1.02314E+00 3.84135E—01
`1.27539E—01
`
`A14:
`-1.23741E-02 1.71260E-01 -6.59499E—01-1.74964E-01
`Surface#
`9
`10
`
`k =
`
`-4.22959E+00 -6.41687E+00
`
`
`A4=
`-9.71476E-02 7.01281E-02 -5.12756E-02 -3.34585E—02
`
`
`A6:
`‘-8.11331E-02‘ 2.92123E-02 ‘ 7.23839E—02 -2.38064E-02
`
`A8:
`‘1.07277E-01‘-2.10911E—01‘-9.95429E—02 1.07164E-02
`‘
`
`A10=
`-4.27833E—02‘ 3.08682E—01 ‘ 6.60561E—02 -9.57510E—04
`A12:
`1.05082E-02 -1.72128E-01 -1.93006E-02 -l.71937E-04-
`
`A14= 2.66446E-05 3.42333E—02 1.89104E-03
`
`
`
`Fig.14A
`
`
`TABLE 8B
`
`Aspheric Coefficients
`Surface #
`11
`
`
`k =
`-8.50861E+00
`
` Fig.14B
`
`
`A1 =
`
`A3 =
`
`A4 =
`
`A5 =
`
`A6 =
`
`A7 =
`
`A8 =
`
`A9 =
`
`A10=
`
`A1] =
`
`A12 :
`
`A13 =
`
`A14 =
`
`-5.34583E—02
`
`1.42727E-02
`
`-5.88607E-03
`
`1.47381E-03
`
`-2.07677E-04
`
`1.25263E-05
`
`Apple V. Corephotonics
`IPR2019-00030
`
`Exhibit 2008 Page 21 0f 36
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 21 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 21 of 25
`
`US 2011/0249346 A1
`
`Surface #
`
`O
`1
`2
`3
`4
`5
`6
`7
`8
`9
`O
`11
`12
`
`13
`14
`
`Object
`Ape. Stop
`Lens 1
`
`Lens 2
`
`Lens 3
`
`Lens 4
`
`Lens 5
`
`IR-filter
`
`Image
`
`TABLE 9
`(Embodiment 5)
`f = 4.30 mm, Fno = 2.80. HFOV = 33.5 deg.
`Curvature Radius Thickness Material
`Index
`
`Abbe # fG
`
`Infinity
`-0.237
`0.607
`0.085
`0.280
`0.427
`0.325
`0.417
`0.381
`
`Plastic
`
`1544
`
`55.9
`
`2.18
`
`Plastic
`
`1.650
`
`214
`
`4.25
`
`Plastic
`
`1650
`
`214
`
`-53.79
`
`Plastic
`
`1544
`
`55.9
`
`5.06
`
`0.717
`
`Plastic
`
`Plano
`Plano
`1.257430 (ASP)
`-17.382200 (ASP)
`-5.890300 (ASP)
`5.2973.00 (ASP)
`-4.889000 (ASP)
`-5.833000 (ASP)
`-2.060770 (ASP)
`- .254960 (ASP)
`-4. 1498.00 (ASP)
`2.307850 (ASP)
`Plano
`
`Glass
`
`
`
`Plano
`Plano
`
`0.203
`
`Fig.15
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 22 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 22 of 25
`
`US 2011/0249346 A1
`
`
`TABLE 10A
`
`
`
`Surface #
`
`
`Aspheric Coefficients
`
`2
`3
`4
`5
`6
`
`k : —4.16503E+00 -1.00000E+00 -1.00000E+00 1.00000E+00 0.00000E+00
`
`2.52514E-01 -4.73140E-02 1.80336E-02
`6.06816E—02 —2.78926E—01
`
`-1.56241E-01
`1.3 1073E-01
`2.13945E-01
`1.35275E-01 -7.86865E-02
`
`A4 =
`
`A6 =
`
`A8 =
`
`1.11054E-01 -3‘37418E-01 -2.33519E-01 5.47458E-02
`
`1.32807E-01
`
`
`A10:
`-1.77887E-01 2.19568E-01 -3.31830E-01 -2.44028E—01 3.68821E—03
`
`
`A12=
`4.83160E-01
`6.99161E-02
`1.13289E+00 9.95190E-02 -1.21131E-01
`
`A14:
`
`-6.496ISE-01 -2.57807E-01 —7.66733E-01 5.77923E-01
`
`A16:
`
`A18:
`
`Surface #
`
`0.00000E+00
`1 fl WWW‘ 777777
`
`2.07000E-01
`8
`9
`10
`7
`
`0.00000E+00 -3.25031E-01 —3.71937E+00 -1.00325EWO
`
`
`
`
`-2.28580E-01 -3.21544E-02 1.35154E-02
`1.19929E-02
`
`-6.3 l907E-03 5.63934E-04
`5.46366E-02 -2.28009E-02
`
`
`
`1.06486E-02
`
` 8.72537E—02 -2.05601E-01 -1.01751E-01
`’ A10=
`-5.79243E-03 2.95230E-01
`6.73690E—02 -1.09325E-03
`
`A12:
`
`4.85584E-02 -1.76582E—01 -1.86841E-02 -1.81772E-04
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`A14: 3.0]233E-05 4-43478E-02 1.61631E—03
`
`
`
`
`
`-5.34936E-—02
`
`A6 =
`
`A7 =
`
`A8 =
`
`1.18156E—02
`
`—5.74831E-03
`
`
`A9 =
`
`A10 =
`
`A11 =
`
`A12 =
`A13 =
`
`1.55616E-O3
`
`-2.34573E—04
`
`A14 =
`
`1.52092E-05
`
`Fig.1
`
`6B
`
`Apple V. Corephotonics
`IPR2019—00030
`
`Exhibit 2008 Page 23 of 36
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 23 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 23 of 25
`
`US 2011/0249346 A1
`
`TABLE 1.
`(Embodiment 6)
`f 4.20 mm, Fno - 2.80. HFOV - 34.0 deg.
`
`Surface #
`
`Curvature Radius
`
`1.544
`
`55.9
`
`2.62
`
`21.4
`
`-5.72
`
`55.9
`
`26.23
`
`55.9
`
`5.15
`
`Plastic
`
`1.650
`
`Plastic
`
`1544
`
`0.280
`0.469
`0.323
`0.245
`0.543
`0.636
`0.400
`Plastic
`1544
`0.500 real
`
`Plastic
`
`1544
`
`
`
`Plano
`1.316260 (ASP)
`14.534000 (ASP)
`7.019500 (ASP)
`2.391790 (ASP)
`-2.641690 (ASP)
`-2.3251 10 (ASP)
`-1.5884.00 (ASP)
`-1. 135790 (ASP)
`-4.887700 (ASP)
`2.460040 (ASP)
`Plano
`
`Ape. Stop
`Lens 1
`
`Lens 2
`
`Lens 3
`
`Lens 5
`
`IR-filter
`
`Image
`
`2
`3
`4
`5
`6
`7
`8
`9
`10
`11
`12
`
`13
`14
`
`Plano
`Plano
`
`0.302
`
`Fig.17
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 24 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 24 of 25
`
`US 2011/0249346 A1
`
`
`
`
`
`TABLE 12A
`Aspheric Coefficients
`6
`5
`3
`4.
`2
`Surface #
`k = -4.08671E--OO-OOOOOE-00-10OOOOE-00 -637628E00000000E+00
`A4 F | 2.27279E-0 -1.74239E-0 -2.0972TE-0 8.93 E-03 -1.7888E-0
`A6 re
`-1.27123E-01 3.64308E-01 4.513.16E-01 2.7747E-01 |-8.022.45E-02
`A8 is
`142039E-01 -5.36251E-01-1833.16E-01 -7.59948E-024.85349E-01
`-3.2023OE-01
`6.38368E-01
`-382148E-01 11 1837E-01 -3.55472E-01
`AO
`5.39964E-02
`7.15413E-01
`-8. 801 E-01 3.80411 E-01
`198246E-O
`7.43244E-02
`A14= -7.6574OE-01 3.07833E-01 - 1.18724E-01
`A16= | 0.00000E--00
`
`A12:
`
`A18- 2.07OOOE-01
`
`Surface it
`
`7
`
`
`
`-
`O
`
`OOOOOOE-00
`
`7.14887E-O1 -2.64319E-00 1.OOOOOE--00
`A4 = -46881 E-02 155372E-O - 85691 E-02-3-4827OE-02
`
`17679E-03 6.82914E-O2 7,0888OE-02 - 160463E-02
`A6 -
`A8 = | 1.20073E-01 - 1884.79E-01-9.23223E-02 1.14931 E-02
`A10= | 4,7477OE-02 2.75548E-01 6.89068E-02 - 1.13596E-03
`Al2= -6.80992E-02-175047E-01 -2.01 86OE-02-2.18294E-04
`A14=
`4.60463E-02 1.07214E-03 328237E-05
`
`
`
`Fig.18A
`
`TABLE 12B
`Aspheric Coefficients
`Surface #
`11
`
`- 4473E--O1
`
`
`
`
`
`
`
`
`
`
`
`
`
`-7.55231E-02
`
`2.09 199E-02
`
`-7.5OO29E-03
`
`18099E-03
`
`-2.5137OE-04
`
`148859E-05
`
`Fig.18B
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 25 of 36
`
`

`

`Patent Application Publication
`
`Oct. 13, 2011 Sheet 25 of 25
`
`US 2011/0249346 A1
`
`4.34
`285
`332
`325
`21.7
`
`f
`Fno
`HFOV
`V1-V2
`V1-((V1+V2+V3)/3).
`f/f
`
`
`
`
`
`
`
`
`
`
`
`
`
`(T12/f)*10
`Td/f
`SL/TTL
`
`TABLE 13
`
`Embodiment Embodiment Embodiment Embodiment Embodiment Embodiment
`4.
`5
`6
`2
`4.30
`420
`4.19
`
`----
`
`23.0
`
`21.7
`
`23.0
`
`23.0
`
`11.5
`
`171
`
`153
`
`0.83
`0.95
`
`157
`
`Fig.19
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 26 of 36
`
`

`

`US 2011/0249346 A1
`
`Oct. 13, 2011
`
`IMAGING LENS ASSEMBLY
`
`BACKGROUND OF THE INVENTION
`1. Field of the Invention
`0001
`0002 The present invention relates to an imaging lens
`assembly, and more particularly, to a compact imaging lens
`assembly used in portable electronic devices.
`0003 2. Description of the Prior Art
`0004. In recent years, with the popularity of mobile phone
`cameras, the demand for compact imaging lenses is increas
`ing, and the sensor of a general photographing camera is none
`other than CCD (charge coupled device) or CMOS device
`(Complementary Metal Oxide Semiconductor device). Fur
`thermore, as advanced semiconductor manufacturing tech
`nology has allowed the pixel size of sensors to be reduced and
`the resolution of compact imaging lenses has gradually
`increased, there is an increasing demand for compact imaging
`lenses featuring better image quality.
`0005. A conventional imaging lens assembly for mobile
`phone cameras, such as the one disclosed in U.S. Pat. No.
`7.365,920, generally comprises four lens elements and an
`aperture stop disposed in front of the four lens elements,
`whereintwo spherical-Surface glass lenses are used as the first
`and second lens elements, and being adhered together to form
`a doublet and thereby to correct the chromatic aberration.
`Such an arrangement of optical elements, however, has the
`following disadvantages: (1) the freedom of the system is
`curtailed due to the employment of excess number of spheri
`cal-surface glass lenses, thus the total track length of the
`system cannot be reduced easily; (2) the process of making
`the glass lenses adhered together is complicated, posing dif
`ficulties in manufacture. In addition, a four independent lens
`elements optical system is disclosed by U.S. Pat. No. 7,643,
`225, comprising multiple aspheric lens elements, which
`effectively shortens the total track length and obtains high
`image quality.
`0006. However, due to the popularity of high standard
`mobile devices such as smart phones and PDAs (Personal
`Digital Assistant) driving the rapid improvements in high
`resolution and image quality of the current compact imaging
`lens systems, conventional four lens elements systems no
`longer satisfy the higher level camera modules. Furthermore,
`with the current trend for high performance and compact
`design in electronic products, the need for high resolution and
`high performance compact imaging lens assembly is very
`crucial in high level electronics development.
`0007. Therefore, a need exists in the art for an imaging lens
`assembly that features better image quality, maintains a mod
`erate total track length and is applicable to compact portable
`electronic products.
`
`SUMMARY OF THE INVENTION
`0008. The present invention provides an imaging lens
`assembly comprising: in order from an object side to an image
`side: a first lens element with positive refractive power having
`a convex object-side surface; a second lens element with
`negative refractive power; a third lens element having a con
`cave object-side surface, a fourth lens element with positive
`refractive power having a convex image-side Surface, at least
`one of the object-side and image-side Surfaces thereof being
`aspheric; and a fifth lens element with negative refractive
`power having a concave image-side surface on which at least
`one inflection point is formed; wherein the imaging lens
`
`assembly further comprises an aperture stop and an electronic
`sensor for image formation, wherein the aperture stop is
`disposed between the imaged object and the second lens
`element; and wherein the distance on the optical axis between
`the aperture stop and the electronic sensor is SL, the distance
`on the optical axis between the object-side surface of the first
`lens element and the electronic sensoris TTL, and they satisfy
`the relation: 0.75<SL/TTL31.20.
`0009. According to another aspect of the present inven
`tion, an imaging lens assembly comprises, in order from an
`object side to an image side: a first lens element with positive
`refractive power having a convex object-side Surface; a sec
`ond lens element with negative refractive power having a
`concave image-side Surface; a third lens element having a
`concave object-side Surface and a convex image-side surface;
`a fourth lens element with positive refractive power having a
`concave object-side Surface and a convex image-side Surface,
`both of the object-side and image-side surfaces thereof being
`aspheric; a fifth lens element with negative refractive power
`having a concave image-side Surface on which at least one
`inflection point is formed, both of the object-side and image
`side Surfaces thereof being aspheric; wherein there is an air
`distance between the first lens element and the second lens
`element; wherein the air distance on the optical axis between
`the first lens element and the second lens element is T12, the
`focallength of the imaging lens assembly is f, and they satisfy
`the relation: 0.05<(T12/f)*10<0.85.
`0010. Such an arrangement of optical elements can reduce
`the size as well as the sensitivity of the imaging lens assembly
`and enables the lens assembly to obtain higher resolution.
`0011. In the present imaging lens assembly, the first lens
`element has positive refractive power so that the total track
`length of the imaging lens assembly can be effectively
`reduced; the second lens element has negative refractive
`power so that the aberration generated from the positive
`refractive power of the first lens element and the chromatic
`aberration of the system can be favorably corrected; the third
`lens element can have either negative or positive refractive
`power; when the third lens element has negative refractive
`power, the Petzval Sum of the system can be corrected effec
`tively and the peripheral image plane becomes flatter, when
`the third lens element has positive refractive power, the high
`order aberration of the system can be favorably corrected; the
`fourth lens element with positive refractive power can effec
`tively distribute positive refractive power contributed by the
`first lens element in order to mitigate the sensitivity of the
`system; the fifth lens element with negative refractive power
`can place the principal point of the optical system away from
`the image plane, reducing the total track length in order to
`maintain a compact imaging lens System.
`0012. In the present imaging lens assembly, the first lens
`element may be a bi-convex lens element or a meniscus lens
`element having a convex object-side Surface and a concave
`image-side surface. When the first lens element is a bi-convex
`lens element, the refractive power thereof can be effectively
`enhanced, thus allowing a shortening of the total track length
`of the imaging lens assembly. When the first lens element is a
`meniscus lens element, the astigmatism of the system can be
`corrected more favorably. The second lens element has a
`concave object-side surface so as to favorably extend the back
`focal length of the system, thereby providing Sufficient space
`to accommodate other components. The third lens element
`has a concave object-side Surface so as to facilitate the cor
`rection of the astigmatism and high order aberrations of the
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 27 of 36
`
`

`

`US 2011/0249346 A1
`
`Oct. 13, 2011
`
`system. Moreover, the third lens element preferably has a
`concave object-side Surface and a convex image-side surface;
`and the fourth lens element has a convex image-side Surface
`and can effectively reduce the incident angle of the system on
`the electronic sensor and increase the photo sensitivity of the
`system; preferably, the fourth lens element has a concave
`object-side Surface and a convex image-side Surface, which
`can effectively correct the aberration of the system at the same
`time; the fifth lens element has a concave image-side Surface
`so that the principal point of the system can be away from the
`image plane, and the total track length of the system can be
`reduced, in order to maintain the compact size of the lens
`assembly; preferably, the fifth lens element has a concave
`object-side Surface and a concave image-side surface.
`0013. In the aforementioned imaging lens assembly, the
`aperture stop can be disposed between the imaged object and
`the first lens element or between the first lens element and the
`second lens element. The first lens element provides positive
`refractive power, and the aperture stop is disposed near the
`object side of the imaging lens assembly, thereby the total
`track length of the imaging lens assembly can be reduced
`effectively. The aforementioned arrangement also enables the
`exit pupil of the imaging lens assembly to be positioned far
`away from the image plane, thus light will be projected onto
`the electronic sensor at a nearly perpendicular angle, and this
`is the telecentric feature of the image side. The telecentric
`feature is very important to the photosensitive power of the
`current solid-state sensor as it can improve the photosensitiv
`ity of the sensor to reduce the probability of the occurrence of
`shading. Moreover, the fifth lens element is provided with at
`least one inflection point, thereby the angle at which the light
`is projected onto the sensor from the off-axis field can be
`effectively reduced to further correct the off-axis aberrations.
`In addition, when the aperture stop is disposed closer to the
`second lens elements, a wide field of view can be favorably
`achieved. Such stop placement facilitates the correction of the
`distortion and chromatic aberration of magnification, and the
`mitigation of the system's sensitivity. Therefore, in the
`present imaging lens assembly, the aperture stop is placed
`between the imaged object and the second lens element for
`the purpose of achieving a balance between the telecentric
`feature and wide field of view of the imaging lens assembly:
`when the aperture stop is disposed between the imaged object
`and the first lens element, telecentric feature of the system is
`emphasized and the total track length can be shortened; when
`the aperture stop is disposed between the first lens element
`and the second lens element, the wide field of view is empha
`sized and the sensitivity of the system can be effectively
`reduced.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`0014 FIG. 1A shows an imaging lens assembly in accor
`dance with a first embodiment of the present invention.
`0015 FIG. 1B shows the aberration curves of the first
`embodiment of the present invention.
`0016 FIG. 2A shows an imaging lens assembly in accor
`dance with a second embodiment of the present invention.
`0017 FIG. 2B shows the aberration curves of the second
`embodiment of the present invention.
`0018 FIG. 3A shows an imaging lens assembly in accor
`dance with a third embodiment of the present invention.
`0019 FIG. 3B shows the aberration curves of the third
`embodiment of the present invention.
`
`0020 FIG. 4A shows an imaging lens assembly in accor
`dance with a fourth embodiment of the present invention.
`0021
`FIG. 4B shows the aberration curves of the fourth
`embodiment of the present invention.
`0022 FIG. 5A shows an imaging lens assembly in accor
`dance with a fifth embodiment of the present invention.
`0023 FIG. 5B shows the aberration curves of the fifth
`embodiment of the present invention.
`0024 FIG. 6A shows an imaging lens assembly in accor
`dance with a sixth embodiment of the present invention.
`0025 FIG. 6B shows the aberration curves of the sixth
`embodiment of the present invention.
`(0026 FIG. 7 is TABLE 1 which lists the optical data of the
`first embodiment.
`0027 FIGS. 8A and 8B are TABLES 2A and 2B which list
`the aspheric surface data of the first embodiment.
`(0028 FIG.9 is TABLE 3 which lists the optical data of the
`second embodiment.
`0029 FIGS. 10A and 10B are TABLES 4A and 4B which
`list the aspheric surface data of the second embodiment.
`0030 FIG. 11 is TABLE 5 which lists the optical data of
`the third embodiment.
`0031
`FIGS. 12A and 12B are TABLES 6A and 6B which
`list the aspheric surface data of the third embodiment.
`0032 FIG. 13 is TABLE 7 which lists the optical data of
`the fourth embodiment.
`0033 FIGS. 14A and 14B are TABLES 8A and 8B which
`list the aspheric surface data of the fourth embodiment.
`0034 FIG. 15 is TABLE 9 which lists the optical data of
`the fifth embodiment.
`0035 FIGS. 16A and 16B are TABLES 10A and 10B
`which list the aspheric surface data of the fifth embodiment.
`0036 FIG. 17 is TABLE 11 which lists the optical data of
`the sixth embodiment.
`0037 FIGS. 18A and 18B are TABLES 12A and 12B
`which list the aspheric surface data of the sixth embodiment.
`0038 FIG. 19 is TABLE 13 which lists the data of the
`respective embodiments resulting from the equations.
`
`DETAILED DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`0039. The present invention provides an imaging lens
`assembly comprising, in order from the object side to the
`image side: a first lens element with positive refractive power
`having a convex object-side Surface; a second lens element
`with negative refractive power; a third lens element having a
`concave object-side surface; and a fourth lens element with
`positive refractive power having a convex image-side surface,
`at least one of the object-side and image-side Surfaces thereof
`being aspheric ; a fifth lens element with negative refractive
`power having a concave image-side Surface on which at least
`one inflection point is formed; wherein the imaging lens
`assembly further comprises an aperture stop and an electronic
`sensor for image formation; wherein the aperture stop is
`disposed between the imaged object and the second lens
`element; and wherein the distance on the optical axis between
`the aperture stop and the electronic sensor is SL, the distance
`on the optical axis between the object-side surface of the first
`lens element and the electronic sensoris TTL, and they satisfy
`the relation: 0.75<SL/TTL31.20.
`0040. When the aforementioned imaging lens assembly
`satisfies the above relation: 0.75<SL/TTL<1.20, the imaging
`lens assembly can obtain a good balance between the telecen
`tric feature and wide field of view; preferably, the aperture
`
`Apple v. Corephotonics
`IPR2019-00030
`Exhibit 2008 Page 28 of 36
`
`

`

`US 2011/0249346 A1
`
`Oct. 13, 2011
`
`stop is disposed between the first lens element and the second
`lens element, and they satisfy the relation: 0.75<SL/TTL<0.
`92.
`0041. In the aforementioned imaging lens assembly, it is
`preferable that the second lens element has a concave image
`side surface so as to effectively increase the back focal dis
`tance in order to obtain enough space for additional compo
`nents; preferably, the fourth lens element has a concave
`object-side surface; wherein a meniscus fourth lens element
`having a concave object-side Surface and a convex image-side
`surface can favorably correct the aberration of the system;
`preferab