Anti-glare optical prism

Abstract

The invention relates to the field of prisms, and further discloses an anti-glare optical prism, which comprises a lens barrel, wherein the lens barrel is of a cylindrical hollow structure, a throughhole consistent with a rotating shaft in diameter is formed in the lens barrel, the lens barrel sleeves the outer wall curved surface of the rotating shaft, the side, away from a handle, of the rotating shaft abuts against one end of a lens seat, the lens seat is of a cuboid structure, the upper surface of the lens seat abuts against the bottom side of a lens body, a cover plate is installed on the upper surface of the lens barrel, a through hole consistent with a first sheath in diameter is formed in the cover plate, the first sheath penetrates through the through hole in the lens barrel, andthe first sheath wraps the periphery of the lens body. According to the invention, after the first sheath is opened, light rays are refracted from the lens body, transmitted by the lens barrel and finally presented on the ocular lens, the refraction angle of the prism body can be changed by adjusting the angles of the handle and the adjusting hand wheel, and the focal length is also adjusted accordingly, so that the imaging definition of the lens body is high, and the function of adjusting the refraction angle is realized.

Description

technical field [0001] The invention relates to the field of prisms, in particular to an anti-glare optical prism. Background technique [0002] A prism is a transparent object surrounded by two intersecting planes that are not parallel to each other. It is used to split light or disperse light beams. The plane perpendicular to the side is called the main section. According to the shape of the main section, it can be divided into triangular prisms, rectangular prisms, Pentaprism etc., the main section of triangular prism is triangle. The triangular prism has two refraction surfaces, the angle between them is called the apex angle, and the plane opposite the apex angle is the bottom surface. It is widely used in optical instruments. Prisms can be divided into several types according to their properties and uses. They are used in periscopes and binocular telescopes In instruments such as changing the direction of light to adjust its imaging position, it is called a total refl...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides an anti-glare optical prism, which solves the problems of low imaging definition, inconvenient adjustment and poor stability of refraction angle, and low service life

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