A Scene Simulator with Rotating Reticle

Abstract

The invention belongs to the technical field of optical testing, and particularly relates to a scene simulator with a reticle capable of achieving spinning. Like an existing simulator, the simulator comprises an objective lens assembly, the reticle, a light source, an image quality compensating mirror and a mechanical supporting structure. According to the improvement, the scene simulator further comprises a motor installed outside the mechanical supporting structure and used for providing rotating power for the reticle, and the reticle is divided into multiple scene image areas used for simulating different parameters of a tested camera, wherein parameters comprise the by function value, the signal-to-noise ratio, the distortion value and the contrast ratio. By using the scene simulator, the different parameters of the tested camera can be tested without replacing the reticle.

Description

technical field [0001] The invention belongs to the technical field of optical testing, and relates to a detection device for the imaging quality of a finite-distance target or an infinite-distance target by a spaceborne / airborne imaging / surveillance camera, in particular to a scene simulator with a reticle that can spin. Background technique [0002] The scene simulator is a testing device that simulates the test target on the ground in order to test the function and performance of the recognition algorithm and imaging quality of the camera under test. [0003] The camera scene simulator is an integral part of the ground test equipment of the spaceborne or airborne control subsystem, and is used for testing the function and performance of the camera under test in the ground test. The scene simulator uses the scene target carved on the optical reticle or the dynamic target using electronic devices (such as TFT-LCD, LCOS, DMD, etc.), after the light emitted by the simulated t...

AI Technical Summary

Problems solved by technology

[0009] However, the defect of the scene simulator is that the corresponding reticle needs to be replaced when testing different parameters of the camera under test (transmission, signal-to-noise ratio, distortion, etc.), which increases the cost of the instrument, complicates the testing process, and even There will be situations where the entire device will be shut down due to the need to replace the reticle

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