Large-view-field dispersion correction nonlinear spectral imaging device

• Main Authors: HE XIAOYING, ZHOU JINSONG, JING JUANJUAN, LI YACAN, YANG LEI, FENG LEI, NIE BOYANG
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2023
• Subjects: COLORIMETRY; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; TESTING

The invention discloses a large-field-of-view dispersion correction nonlinear spectral imaging device, which comprises an entrance slit, a first free-form surface reflector, paired curved surface prisms, a second free-form surface reflector, a compensating mirror and an image plane, and is characterized in that an incident beam is diverged through the entrance slit and enters the first free-form surface reflector; the light beam reflected by the first free-form surface reflector enters the paired curved surface prisms; the light beams which are transmitted twice and reflected once by the paired curved surface prisms enter the second free-form surface reflecting mirror; and the light beam reflected by the second free-form surface reflecting mirror enters the compensating mirror and then enters the image surface after being transmitted by the compensating mirror, so that dispersion of different wavelengths and focusing of a single wavelength are realized. According to the dispersion characteristic of the curved