System and method for accurately positioning center of curvature radius of off-axis spherical reflector

Abstract

The invention relates to a system and a method for accurately positioning a center of a curvature radius of an off-axis spherical reflector. The system comprises a high-precision flat plate, a rotating shaft, a reticle with a cross wire and a high-precision microscope, wherein an inner hole is arranged on the high-precision flat plate, the rotating shaft is arranged inside the inner hole of the high-precision flat plate, the reticle with the cross wire is vertically arranged on the rotating shaft and can rotate freely inside the inner hole of the high-precision flat plate along with the rotating shaft, and the high-precision microscope and the reticle with the cross wire are arranged on the same optical axis. The system and the method for accurately positioning the center of the curvature radius of the off-axis spherical reflector is high in positioning precision, easy to adjust and convenient to operate.

Description

Technical field [0001] The invention belongs to the field of optical precision assembly and adjustment, and relates to a system and method for accurately positioning the center of curvature of a reflector, in particular to a system and method for realizing accurate positioning of the center of curvature of an off-axis spherical reflector. Background technique [0002] The diversified development of optical systems has evolved from traditional coaxial optical systems to off-axis optical systems, and then to the current off-axis optical systems. The increasingly complex forms of optical systems have increased the difficulty of assembly and adjustment. For polarized optical systems, due to the particularity of the system design, that is, the optical elements in the optical system do not have a common optical axis, making it impossible to achieve by conventional assembly and adjustment methods. Effective adjustment of such systems. In addition, since the off-axis optical element doe...

AI Technical Summary

Problems solved by technology

The increasingly complex form of the optical system makes the installation and adjustment more difficult. For the polarized optical system, due to the particularity of its system design, that is, the optical elements in the optical system do not have a common optical axis, so that it cannot be realized by conventional installation and adjustment methods. Efficient tuning of such systems

And because the off-axis optical element does not have the central part of the optical axis, the precise positioning of the relative position of each mirror cannot be achieved by using the traditional contact distance measurement method, so that the focal length of the system and the final imaging quality of the system cannot be guaranteed

In addition, due to the large number of optical components in the off-axis optical system, there are too many adjustment variables when the system is assisted by the method of computer-aided adjustment, which reduces the effectiveness of the adjustment and cannot realize the adjustment of each off-axis spherical mirror in off-axis optics. effective positioning

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