Doubling image detector

Abstract

The invention relates to a doubling image detector, which comprises a fixed workbench, and is characterized in that a Barlow lens base used for installing a Barlow lens is fixed above the fixed workbench through a supporting assembly, a lens base used for installing a lens is arranged below the Barlow lens base, and a camera base used for installing a CMOS image sensor and driven to ascend and descend through a lifting mechanism is arranged below the lens base. The doubling image detector is simple and compact in structural design and low in cost, saves the operation space, can be used for detecting the imaging quality of a long focal length, and improves the detection accuracy of the imaging quality of the lens.

Description

Technical field: [0001] The invention relates to a magnification image detector. Background technique: [0002] The image quality of the lens is an important criterion for judging the lens. At present, the image quality inspection of the lens mainly uses projector inspection, MTF inspection, and camera real-time inspection. These inspection methods have some shortcomings, specifically: (1) MTF inspection At present, it is only suitable for testing the imaging quality of fixed-focus lenses. Inaccurate judgments are prone to occur when testing the imaging quality of zoom lenses, and MTF testing equipment is expensive, and the use of projectors takes up a large area for testing and imaging areas; The most accurate verification of the imaging quality of the lens, but the focal length of the zoom lens is often large, so the camera needs a large space for real shooting, and the camera shooting and inspection personnel are cumbersome to assemble the locking lens, which is inefficie...

AI Technical Summary

Problems solved by technology

[0002] The image quality of the lens is an important criterion for judging the lens. At present, the image quality inspection of the lens mainly uses projector inspection, MTF inspection, and camera real-time inspection. These inspection methods have some shortcomings, specifically: (1) MTF inspection At present, it is only suitable for testing the imaging quality of fixed-focus lenses. Inaccurate judgments are prone to occur when testing the imaging quality of zoom lenses, and MTF testing equipment is expensive, and the use of projectors takes up a large area for testing and imaging areas; The most accurate verification of the imaging quality of the lens, but the focal length of the zoom lens is often large, so the camera needs a large space for real shooting, and the camera shooting and inspection personnel are cumbersome to assemble the locking lens, which is inefficient; (3) The image inspection of the projector is too large , the distance is too large to be recognized by the naked eye

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