A plano-convex lens centering installation device

Abstract

The invention relates to the optical technologies, in particular to a centering installation device for a plane-convex lens. The centering installation device for the plane-convex lens is used for installing the plane-convex lens in a lens drum in a centering mode and comprises a front centering barrel, a back centering barrel, a base, a pressure application mechanism and a locating mechanism. Coaxial centering of the plane-convex lens and the front centering barrel can be guaranteed through coincidence of matching faces. The back centering barrel is located at the back of the front centering barrel, and coaxial concentric performance of the front centering barrel and the back centering barrel can be guaranteed through coincidence of matching faces. A guide rod is arranged at the back end of the back centering barrel. A guide hole is formed in the middle of the base, the guide rod is located in the guide hole and can slide in the guide hole, and the outer wall of the guide rod is matched with the inner wall of the guide hole. The back centering barrel and the base are coaxial in a centering mode. The pressure application mechanism applies pressure on the front centering barrel and the plane-convex lens by pushing the back centering barrel. The lens drum is fixedly connected with the base through the locating mechanism, so coaxial centering of the lens drum and the base can be achieved. The centering installation device is simple in structure, high in centering accuracy and capable of protecting the optical face of the lens.

Description

technical field [0001] The invention relates to the field of optical technology, in particular to a plano-convex lens centering installation device. Background technique [0002] An optical system is a widely used high-precision system. In such a system, it includes at least two parts: optical elements and mechanical supports. Optical system installation and adjustment is the process of installing optical components to predetermined mechanical support parts, and then realizing optical functions. The adjustment of the optical system is a key step to ensure the correct operation of the optical system, and its installation accuracy partly determines the working accuracy of the optical system. In the optical system, the plano-convex lens is a common lens. When installing this kind of lens, if the lens plane part touches the positioning surface, it is generally difficult to directly position the lens to the center position with high precision because of its infinite radius of cu...

AI Technical Summary

Problems solved by technology

In order to solve the optical centering problem of this type of lens, one of the technical solutions adopted in the prior art can carry out high-precision assembly, but the equipment is expensive; the second technical solution adopted in the prior art is as figure 1 As shown, the lens and the front end of the mounting device are designed to fit in a small gap. Through the concentric mounting device and the lens barrel, the lens is put into the lens barrel. If the gap is designed too large, the positioning will not be accurate; if the gap is designed too small , and it is easy to make it difficult to take out after use, especially in an environment with obvious temperature changes, which may even cause lens deformation and affect the accuracy of the optical system; the third technical solution adopted in the prior art is as follows figure 2 As shown, the spherical surface of the lens coincides with the spherical surface of the front end of the mounting device, so that the optical axis of the lens slides to a position coaxial with the central axis of the mounting device during preloading, because the central axis of the mounting device is coaxial with the central axis of the lens barrel , which can ensure the installation accuracy of the lens; but when the lens rubs against the installation device, the glass or coating on the edge of the lens will inevitably be scratched, making the wave aberration of the entire lens larger, or it has to be reduced in the design Effective Clear Aperture

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