20X42 telescope system

By designing a 20X42 telescope system, using optimized lens combination and structure, the problems of narrow field of view and large jitter of high-magnification telescopes are solved, achieving a wider field of view and more stable observation effects.

CN119644574AInactive Publication Date: 2025-03-18KUNMING MAYVIN PHOTOELECTRIC INSTR CO LTD
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Patent Information

Application Number
CN202510185624.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-20
Publication Date
2025-03-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The field of view of high-magnification telescopes is usually narrow and the picture jitters are large, resulting in the field of view being less than 3 degrees at 20 times magnification, shortening the distance of the pupil exit, affecting the observation effect.

Method used

A 20X42 telescope system is designed, and the objective lens and eyepiece lens combination are arranged in sequence along the optical axis direction, including glued lenses, double convex, concave and convex lenses. By optimizing the curvature radius and material of the lens, adjusting the focal length and distance of the lens group to improve the field of view and stability.

Benefits of technology

A telescope system with a 20-fold magnification is achieved, with the entire field of view reaching 3.25°, the diameter of the pupil and the distance of the pupil are suitable, the nearest focusing distance is 8m, and the image stabilization range is positive and minus 5 degrees, which significantly improves the observation effect.

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Abstract

The invention belongs to the technical field of telescope manufacturing, and discloses a 20 * 42 telescope system which is characterized in that an objective first lens, an objective second lens, a focusing lens, a semi-pentaprism, a roof prism, a rhombic prism, an eyepiece first lens, an eyepiece second lens, an eyepiece third lens and an eyepiece fourth lens are sequentially arranged in the optical axis direction from the object side to the image side. The visual field of the whole machine is 3.25 degrees, the exit pupil diameter is 2.1 mm, the exit pupil distance is 35 mm, the nearest focusing distance is 8 m, and the image stabilization range is + / -5 degrees.
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