Design of high stiffness self-collimating light pipe

Fei Xie; Guofeng Zheng II; Baolin Du III; Peng Zhang IV

doi:10.1117/12.2565069

17 April 2020 Design of high stiffness self-collimating light pipe

Fei Xie, Guofeng Zheng II, Baolin Du III, Peng Zhang IV

Proceedings Volume 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications; 114555I (2020) https://doi.org/10.1117/12.2565069
Event: Sixth Symposium on Novel Photoelectronic Detection Technology and Application, 2019, Beijing, China

Abstract

The high stiffness self-collimating light pipe is mounted on the single-axis angular vibration table, and is mainly used for the adjustment and debugging of the plane mirror. By monitoring the angle change of the plane mirror, the corresponding test is completed with the photoelectric product..The designed self-collimating light pipe can withstand an angular vibration environment with a vibration frequency of 0.1 Hz to 25 Hz, and the optical axis jitter does not exceed 3" during use.The high stiffness self-collimating light pipe is mainly composed of four parts: optical system, mechanical structure, electronic control system and embedded software.The optical system is mainly composed of a collimating objective lens, a reticle and a light source to form a signal transmitting system, a beam splitter and a signal receiving system including a CCD to realize the transmission and reception of light energy.In order to improve the test accuracy, the optical system collimating objective lens adopts a telephoto optical system, and the main surface of the telephoto optical system is away from the ens group, which can ensure the focal length (200 mm) and the overall size of the optical system.The telephoto optical system consists of a positive lens group and a negative mirror group. The positive and negative lens combination not only reduces the axial dimension of the system but also effectively corrects the spherical aberration of the system.As a high-precision angle measuring system, in order to eliminate the measurement error caused by the axial displacement of the CCD target surface and the focal plane of the optical system, the optical system is designed in the form of an image telecentric optical path. Finally, the angular accuracy can be no more than 2".

Citation Download Citation

Fei Xie, Guofeng Zheng II, Baolin Du III, and Peng Zhang IV "Design of high stiffness self-collimating light pipe", Proc. SPIE 11455, Sixth Symposium on Novel Optoelectronic Detection Technology and Applications, 114555I (17 April 2020); https://doi.org/10.1117/12.2565069

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KEYWORDS

Charge-coupled devices

Light sources

Mirrors

Optical design

Reticles

Light

Light emitting diodes

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