For the X-cube prism 3CCD camera, the spectra of the designed dichroic films in the prism shift with changes in the incident angle of light, resulting in color non-uniformity on the image plane. We optimized the thin film to improve color consistency by considering the influence of the incident angle on color performance in filter design. An optical model was used to calculate the camera spectral sensitivity distribution and correct the non-uniform color on the image plane. The results showed that the optimization and correction methods significantly improved the color performance of the X-cube prism 3CCD camera.
For the X-cube prism three-charge-coupled-device (3CCD) camera, the spectra of the designed dichroic films in the X-cube prism shift with changes in the angle of incident light, producing non-uniformity of color on the image plane. We considered the influence of the incident angle on color performance in filter design and directly optimized the thin film to improve color consistency. An optical model was constructed to calculate the distribution of camera spectral sensitivity and independently correct the non-uniform color on the image plane. Results showed that the optimization and correction methods could significantly improve the color performance of the X-cube prism 3CCD camera. (c) 2023 Optica Publishing Group
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