Glass-plastic mixed eyepiece with long exit pupil distance and optical system thereof
By using a glass-plastic hybrid lens design, the problems of heavy weight and insufficient exit pupil distance in traditional eyepiece systems are solved, resulting in a lightweight and high-definition eyepiece optical system that meets the requirements of portable devices.
CN224457140UActive Publication Date: 2026-07-03WUHAN CHANGJIANG OPTICS ELECTRON
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Patent Information
- Application Number
- CN202521150788.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-06
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2035-06-06
AI Technical Summary
Technical Problem
Traditional eyepiece optical systems struggle to meet the demands for longer interpupillary distance, lighter weight, and higher resolution, especially in portable observation devices where traditional materials are expensive, heavy, and inconvenient to carry.
Method used
It adopts a glass-plastic hybrid lens design, including lanthanum flint glass, lanthanum crown glass, heavy flint glass and optical plastic PMMA lens. Through special optical system composition and parameter settings, it achieves long interpupillary distance, lightweight and high definition.
Benefits of technology
It achieves an eyepiece optical system with a longer exit pupil distance, lighter weight, and clearer image quality, adapting to the needs of harsh environments and the use of goggles.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a long exit pupil distance glass-plastic hybrid eyepiece and an optical system thereof. The optical system comprises a diaphragm, a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged at intervals from an image space to an object space, wherein the second lens and the third lens form a doublet lens; the first lens and the doublet lens are glass lenses, and the fourth lens is a plastic lens. The eyepiece is simple and light in structure and easy to assemble and use.
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