Zoom eyepiece with adjustable reticle

Abstract

The invention discloses a zoom eyepiece with an adjustable reticle. The zoom eyepiece comprises a guide barrel, a first lens, the reticle and a second lens are sequentially arranged in the guide barrel from left to right, and a lens spiral barrel, a reticle spiral barrel and a hand wheel sequentially and externally sleeve the guide barrel. The lens spiral barrel is used for controlling opposite movement of the first lens and the second lens, the reticle spiral barrel is used for controlling side-to-side movement of the reticle, and the hand wheel is in tooth connection with the lens spiral barrel and / or the reticle spiral barrel and used for controlling rotation of the lens spiral barrel and / or the reticle spiral barrel. A reticle transition plate is arranged between the guide barrel and the reticle and used for fastening the reticle. A diameter-to-thickness ratio of the reticle is shifted to a diameter-to-thickness ratio of the reticle transition plate, and since the reticle transition plate avoids an optical lens extrusion space, the thickness of the reticle transition plate can be increased, and accordingly a diameter-to-thickness ratio of an integral structure of the reticle is decreased, the problem of stress imbalance of the reticle is solved, and inclination clamping stagnation of the reticle is avoided.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of optical elements, and in particular relates to a zoom eyepiece with an adjustable reticle. [0003] 【Background technique】 [0004] The existing reticle distance measuring continuous zoom optical system is to place the reticle on the front focal plane or rear focal plane of the lens steering zoom system. The typical system is a continuous zoom system with lens steering zoom. magnification, and for some large-diameter and large-magnification telescopic systems that do not use the steering zoom lens group but use the continuous zoom eyepiece to achieve continuous zoom, the existing zoom eyepiece has an image space due to optical reasons. The reticle cannot be placed because it is squeezed, and the reticle cannot be moved when the eyepiece is zoomed. For example, the bird-watching scope with continuous zoom and the astronomical telescope with the eyepiece with continuous zoom, because the image surf...

AI Technical Summary

Problems solved by technology

[0004] The existing reticle distance measuring continuous zoom optical system is to place the reticle on the front focal plane or rear focal plane of the lens steering zoom system. The typical system is a continuous zoom system with lens steering zoom. magnification, and for some large-diameter and large-magnification telescopic systems that do not use the steering zoom lens group but use the continuous zoom eyepiece to achieve continuous zoom, the existing zoom eyepiece has an image space due to optical reasons. The reticle cannot be placed because it is squeezed, and the reticle cannot be moved when the eyepiece is zoomed

Such as continuously zooming bird-watching mirrors and astronomical telescopes with continuously zooming eyepieces, because the image plane is a virtual image plane, it is impossible to place a reticle for distance measurement

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