Device for measuring point source stray light transmission coefficient in large dynamic range
A technology with large dynamic range and transmission coefficient, which is applied in the direction of testing optical performance, etc., and can solve problems such as system failure, image quality degradation, and harmful effects of the optical system
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specific Embodiment approach 1
[0011] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, the large dynamic range point source stray light transmission coefficient measuring device in this embodiment includes solar simulator 1, optical path assembly, horizontal turntable 6 and detector; The horizontal turntable 6 described above is used to control the rotation of the optical system 5 to be measured in the horizontal plane; the optical path assembly includes the aperture stop 2, the folding axis mirror 3 and the large-aperture collimator 4; the light emitted by the solar simulator 1 passes through the aperture stop 2 is projected on the refracting mirror 3, and after being reflected by the refracting mirror 3, it is projected onto the large-diameter collimator 4. The light beam emitted by the large-diameter collimator 4 is a large-diameter parallel light. On the entrance pupil aperture of the optical system to be measured 5, that is, the large-diameter collimator 4 exp...
specific Embodiment approach 2
[0012] Specific implementation mode two: combination image 3 Describe this embodiment, the difference between this embodiment and the specific embodiment is that the solar simulator 1 is composed of a high-voltage short-arc xenon lamp 1.1 and an ellipsoidal reflector 1.2; the high-voltage short-arc xenon lamp 1.1 is placed at the focus of the ellipsoidal reflector 1.2 superior. The high-voltage short-arc xenon lamp 1.1 is a high-voltage short-arc xenon lamp with a power of 1000kw and a color temperature of about 6000k. The solar simulator 1 simulates the real sunlight environment, and the divergence angle of the parallel light emitted is less than 32', and the beam uniformity is better than 2.5%. The irradiance at the entrance pupil aperture of the optical system 5 to be tested is greater than 1000 lx. Other compositions and connection methods are the same as those in Embodiment 1.
specific Embodiment approach 3
[0013] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the horizontal turntable 6 uses a stepping motor to control the rotation, and the rotation angle accuracy is 0.05°. Other compositions and connection modes are the same as those in Embodiment 1 or 2.
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