Imaging module with high resolution and compact size

Details Imaging module with high resolution and compact size Imaging module with high resolution and compact size

2009-04-02

2010-12-28

Spector, David N (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C348S240300, C359S772000, C359S771000, C359S715000

Reexamination Certificate

active

07859771

ABSTRACT:
An imaging lens includes an imaging lens system and an image sensor. The imaging lens system includes a first lens, a second lens, a third lens, and a fourth lens. The imaging module satisfies the formulas (1) D/T≧1.1, (2) −3.5<R2/F1<−1.5, (3) −2.5<R3/F2<−0.5, and (4) 1.5<|R7/F4|<3.5, wherein D is the diagonal length of the sensing area of the image sensor, T is the length from the object surface of the first lens to the sensing surface of the image sensor, R2is the radius of curvature of the image side surface of the first lens, R3is the radius of curvature of the object side surface of the second lens, R7is the radius of curvature of the object side surface of the fourth lens, F1,F2,F4are the corresponding focal length of the first lens, the second lens, and the third lens.

REFERENCES:
patent: 7764443 (2010-07-01), Zhao et al.
patent: 2010/0097709 (2010-04-01), Tsai

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