Simulation of autofocus lens design for a cell phone camera with object distance from infinity to 9.754&#x2009;&#x2009;mm

Wen-Shing Sun; Chuen-Lin Tien; Jui-Wen Pan; Kai-Chang Huang; Pu-Yi Chu

doi:10.1364/AO.54.00E203

Applied Optics
Vol. 54,
Issue 28,
pp. E203-E209
(2015)
•https://doi.org/10.1364/AO.54.00E203

Simulation of autofocus lens design for a cell phone camera with object distance from infinity to 9.754 mm

Wen-Shing Sun, Chuen-Lin Tien, Jui-Wen Pan, Kai-Chang Huang, and Pu-Yi Chu

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Wen-Shing Sun, Chuen-Lin Tien, Jui-Wen Pan, Kai-Chang Huang, and Pu-Yi Chu, "Simulation of autofocus lens design for a cell phone camera with object distance from infinity to 9.754 mm," Appl. Opt. 54, E203-E209 (2015)

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Abstract

This paper presents the simulation of an autofocus lens design with large depth of field for a cell phone camera. The object distance of the lens is from infinity to 9.754 mm. When the object distance is from infinity to 550 mm, the value of the modulation transfer function (MTF) is greater than 0.6 for the spatial frequency of 114 lp/mm, the optical distortion is less than 1.5%, and the relative illumination is greater than 67%. When the object distance is from 325 to 9.754 mm, the MTF values is greater than 0.4 for close-up shooting. The optical distortion is less than 1.454%, and the relative illumination is greater than 68.8%.

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Parameters	Specification
Model	OV3630
Sensor Type	CMOS
Resolution	$2048 \times 1536$ (UXGA)
Device Diagonal	$1 / 3^{''}$
Active Area	$4.50 mm \times 3.38 mm$
Pixel Pitch	2.2 μm

$\| S_{O} \|$	$S_{i}$	Shooting Area	${NA}_{O}$	${NA}_{i}$	$\| M \|$
Infinity	4.877 mm	Infinity	0	0.178593	∞
3000 mm	4.885 mm	$2763 mm \times 2075 mm$	0.00029	0.178338	614.132
550 mm	4.921 mm	$502.984 mm \times 377.797 mm$	0.00029	0.178338	111.774
325 mm	4.951 mm	$295.377 mm \times 221.861 mm$	0.002685	0.176227	65.639
100 mm	5.127 mm	$87.770 mm \times 65.925 mm$	0.008761	0.170866	19.504
9.754 mm	9.754 mm	$4.5 mm \times 3.38 mm$	0.094527	0.094527	1

Center wavelength $λ = 0.5876 μm$ , spatial frequency $ν = 114 lp / mm$
Object distance $\| S_{O} \|$	${NA}_{i}$	$ν_{o} (lp / mm)$	$DMTF (ν)$
Infinity	0.178593	607.8	0.763
3000 mm	0.178338	607.0	0.762
550 mm	0.177162	603.0	0.761
325 mm	0.176227	599.8	0.759
100 mm	0.170866	581.6	0.752
9.754 mm	0.094527	321.7	0.558

No	Type	Radius	Thickness	Glass
Object	Sphere	Infinity	Infinity
1	Asphere	8.5423	1.6000	52500.60000
2	Asphere	2.6964	4.4509
3	Asphere	3.8368	1.6000	52500.60000
4	Asphere	−10.1492	0.5896
Stop	Sphere	Infinity	0.1000
6	Asphere	3.2370	0.7782	52500.60000
7	Asphere	4.7820	0.5825
8	Asphere	−3.3613	0.7000	66000.18600
9	Asphere	−73449	0.1000
10	Sphere	5.1661	1.4241	74397.44850
11	Sphere	−9.5550	1.7114
12	Asphere	−2.8327	0.7535	49900.57400
13	Asphere	−6.3069	0.3609
14	Sphere	Infinity	0.4000	51680.64167
15	Sphere	Infinity	0.3609
16	Sphere	Infinity	0.4000	51680.64167
17	Sphere	Infinity	0.0400
Image	Sphere	Infinity	0.0000

Parameters	Specification
Model	OV3630
Sensor Type	CMOS
Resolution	$2048 \times 1536$ (UXGA)
Device Diagonal	$1 / 3^{''}$
Active Area	$4.50 mm \times 3.38 mm$
Pixel Pitch	2.2 μm

Simulation of autofocus lens design for a cell phone camera with object distance from infinity to 9.754 mm

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Tables (4)

Equations (10)

Applied Optics