Photography Optical System

An optical system and lens technology, applied in the field of photographic optical systems, can solve problems such as limited imaging performance, structural limitations, and inability to further correct advanced aberrations, and achieve the effect of reducing system chromatic aberration and system field curvature

Active Publication Date: 2018-01-12
RUISHENG OPTOELECTRONICS TECH SUZHOU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing photographic lens with seven lens groups is limited by the structure and cannot further correct advanced aberrations, such as spherical aberration, resulting in limited imaging performance

Method used

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  • Photography Optical System
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Embodiment Construction

[0082]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0083] see figure 1 , is a schematic structural view of a preferred embodiment of the photographic optical system provided by the present invention. The photographic optical system 1 is mainly composed of seven lenses arranged coaxially, and sequentially includes a first lens 10, a second lens 20, a third lens 30, a fourth lens 40, and a fifth lens from the object plane a to the image plane b. 50. The sixth lens 60 and the seventh lens 70. In this embodiment, ...

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Abstract

The invention provides a photographic optical system. The photographic optical system comprises a first lens (the focal length is f1), a second lens (the focal length is f2), a third lens (the focal length is f3), a fourth lens (the focal length is f4), a fifth lens (the focal length is f5), a sixth lens (the focal length is f6) and a seventh lens (the focal length is f7) which are coaxially arranged from an object side to an image side in turn and meet the following conditional expressions 10<f1 / f<40, 20<f2 / f<80, 0.5<f3 / f<1.5, -2.5<f4 / f<-0.5, -10<f5 / f<-2, 0.2<f6 / f<1.2 and -1.5<f7 / f<-0.4, wherein f is the focal length of the whole system. According to the photographic optical system, the large-relative-aperture photographic optical system is designed through reasonable optimization of the surface type, distribution of focal power and selection of optical material so that imaging performance under low illumination environment can be provided and imaging is clear.

Description

【Technical field】 [0001] The invention relates to a photographic optical system, in particular to a photographic optical system for portable electronic equipment. 【Background technique】 [0002] In recent years, with the vigorous development of miniaturized photographic lenses, the demand for miniature imaging modules is increasing day by day, and the photosensitive elements of general photographic lenses are nothing more than two types of photosensitive coupling elements or complementary metal oxide conductor elements. With the semiconductor manufacturing With the advancement of technology, the pixel size of the photosensitive element has been further reduced. In addition, the development trend of today's electronic products is that they have good functions and are light, thin and small. Therefore, miniaturized photographic lenses with good imaging quality have become the mainstream in the market. [0003] In photographic lenses using photosensitive elements, the resolution...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B13/00G02B13/18G02B1/00
CPCG02B1/00G02B13/0045G02B13/18
Inventor 石荣宝
Owner RUISHENG OPTOELECTRONICS TECH SUZHOU CO LTD
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