A multispectral simulation target device and a control method thereof

Abstract

The application provides a multispectral simulation target device and a control method thereof, and relates to the technical field of medical optical detection. The device comprises a multi-band light source module, an integrating sphere, a spatial light modulator, a projection imaging lens group and a target plane arranged in sequence along an optical axis. The device further comprises a driving circuit, a spectral feedback module and a controller. The controller is configured to control the driving circuit to drive the multi-band light source module to provide a plurality of narrow-band lights with different center wavelengths. The narrow-band lights are multiple times diffusely reflected by the integrating sphere to form a preset composite light. The spatial light modulator modulates the spatial intensity of the incident composite light according to the pixel position to form an output image. The projection imaging lens group projects the output image onto the target plane, and the output image on the target plane is observed through an endoscope lens. The spectral feedback module is configured to detect the spectrum of the output image on the target plane. The controller controls the spatial light modulator to modulate the spatial intensity of the incident composite light according to the spectrum of the output image.

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