Optical axis consistency calibration and split-image fixed-focus adjustment device and method for non-imaging system

Abstract

The invention discloses an optical axis consistency calibration and split-image fixed-focus alignment device and method for a non-imaging system. In order to solve the problem that the prior art can not be applied to the optical axis consistency calibration of a high-accuracy non-imaging optical system, the device consists of an attenuation system, a telescoping system, a 1 / 4 wave plate, a polarization splitting prism, a polarizer, an abaxial total reflection optical fiber collimator, a FC (Fiber Channel) optical fiber interface, a broad spectrum illumination light source, an all-dielectric interference filter, a primary imaging objective lens, a split-image drawing and inserting device, a parallel panel, a split-image focusing screen, a secondary imaging mirror group, a near infrared detector and a data processing system, wherein the arrangement of the large-caliber telescoping system and a light path guarantees that the postures of the device and equipment to be detected are kept constant, and the near infrared detector guarantees the consistency of a measurement background. On the basis, the arranged broad spectrum illumination light source can emit full-caliber parallel light through the device disclosed by the invention, and is suitable for the optical axis consistency measurement and alignment of the non-imaging optical system in the caliber of the device.

Description

technical field [0001] The invention belongs to the field of optical detection, and in particular relates to an optical axis consistency calibration of a non-imaging system and a split-image fixed-focus adjustment device and method. Background technique [0002] With the development of optical sensing technology, the current state-of-the-art optoelectronic devices are becoming more and more complex. Generally, large-scale optoelectronic devices are often composed of multiple optical subsystems. The overall equipment basically measures the same target, so ensuring the consistency of the optical axes of each system of the equipment and installing the detector on the best imaging surface is the prerequisite for the normal operation of optoelectronic equipment. For non-imaging optical systems such as long-distance laser ranging systems, laser radar systems, and space optical communication systems, the receiving end uses non-imaging photodetectors such as APDs, which have no imag...

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Problems solved by technology

[0005] In order to solve the problem of optical axis consistency calibration that cannot be applied to high-precision non-imaging optical systems in the prior art, the present invention proposes a device and method for optical axis consistency calibration and split-image fixed focus adjustment of non-imaging optical systems

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