Lens system
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorsFang-Ying Peng, Hai-Jo Huang, Sheng-An Wang, An-Tze Lee, Xiao-Na Liu
Life of this patent
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Abstract
A lens system with positive refraction power, in order from the object-side to the image-side, includes a first lens group with negative refraction power and a second lens group with positive refraction power. The first lens group includes a first lens with negative refraction power, a second lens with positive refraction power, and a third lens with positive refraction power. The second lens group includes a fourth lens with negative refraction power, a fifth lens, and a sixth lens. The lens system satisfies the following condition: 5<D/F<5.3, wherein: D is a total length of the lens system; F is a focal length of the lens system.
Claims13
A lens system, in order from the object-side to the image-side thereof, comprising:
- a first lens group with negative refraction power, the first lens group comprising a first lens with negative refraction power, a second lens with negative refraction power, and a third lens with positive refraction power;
- and
- a second lens group with positive refraction power, the second lens group comprising a fourth lens with positive refraction power, a fifth lens, and a sixth lens;
- wherein the lens system satisfies the following condition:
- 5<D/F<5.3;
- wherein:
- D is a total length of the lens system;
- F is a focal length of the lens system.
Dependencies are inferred from the claim text.