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Long-exit-pupil eyepiece optical system

A technology of optical system and pupil eyepiece, which is applied in the field of optical system to achieve the effect of total optical length, light weight and small volume

Active Publication Date: 2022-03-22
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing long exit pupil eyepiece optical system cannot meet the requirements of military eyepieces in terms of exit pupil distance, aberration and volume, etc., the present invention provides a long exit pupil eyepiece optical system

Method used

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Embodiment Construction

[0017] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0019] A long exit pupil eyepiece optical system, such as figure 1 As shown, it includes a first lens 2 , a second lens 3 , a third lens 4 , a cemented lens, and an image side 7 arranged sequentially from front to back along the optical axis. The cemented lens includes a fourth lens 5 and a fifth lens 6 sequentially arranged along the optical axis direction fro...

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Abstract

The invention discloses a long-exit-pupil eyepiece optical system, relates to the technical field of optical systems, and solves the problem that an existing long-exit-pupil eyepiece optical system cannot meet the requirements of military eyepieces in the aspects of exit pupil distance, aberration, volume and the like at the same time. The system comprises a first lens, a second lens, a third lens, a balsaming lens and an image space which are sequentially arranged from front to back in the optical axis direction, the balsaming lens comprises a fourth lens and a fifth lens which are sequentially arranged from front to back in the optical axis direction, and the first lens, the third lens and the fourth lens all have positive refractive indexes. The second lens and the fifth lens have negative refractive indexes, and the balsaming lens has negative focal power. Compared with a traditional eyepiece optical system, the long-exit-pupil eyepiece optical system has the advantages of being small in size, light in weight, short in total optical length and stable in performance, and the exit pupil distance and aberration can both meet current requirements.

Description

technical field [0001] The invention relates to the technical field of optical systems, in particular to an eyepiece optical system with a long exit pupil. Background technique [0002] With the development of military weapons and equipment in various countries, a large number of traditional weapons and equipment have been updated. In order to achieve long-distance, day and night observation and aiming, a large number of day and night general-purpose observation and aiming equipment are equipped on traditional weapons. For military aiming and telescopic systems, in order to prevent light leakage from the rear end of the eyepiece and hit the head when shooting, goggles and forehead protection are required to ensure the personal safety of the shooter; at the same time, in order to avoid damage to the shooter from smoke bombs, goggles are also required. , so the eyepiece optical system needs to have a long enough pupillary distance. [0003] Generally, the exit pupil distance ...

Claims

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Application Information

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IPC IPC(8): G02B25/00
CPCG02B25/001
Inventor 张明超张尧禹白晶黄剑波梁国龙丁浩
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI