Design and test of high-efficiency dual-element laser diffuser for large-field automotive shadowgraphy

A new design is developed for compact-size and lightweight laser beam diffuser of two rad divergence (± 1 rad ≈  ± 60°). The design combines diffractive–refractive beam shaping optics, and it consists of a 532 nm military laser pointer, equipped with a laser dot matrix beam shaper and a rod lens. Th...

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Bibliographic Details
Published in:Journal of optics (New Delhi) 2020-06, Vol.49 (2), p.263-269
Main Authors: Ayoub, H. S., Hussein, Wessam M., El-Sherif, Ashraf F., Elbashar, Y. H.
Format: Article
Language:English
Subjects:
Diffusers
Gaussian beams (optics)
Laser beams
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
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Summary:A new design is developed for compact-size and lightweight laser beam diffuser of two rad divergence (± 1 rad ≈  ± 60°). The design combines diffractive–refractive beam shaping optics, and it consists of a 532 nm military laser pointer, equipped with a laser dot matrix beam shaper and a rod lens. The non-Gaussian laser beam is spread into a relatively homogenous large-field illumination. This design is a low-cost optical configuration, which enabled large-field automotive laser shadowgraphy and was found to be very useful in similar practice situations, where a laser beam of high divergence is required. The diffuser setup was tested successfully in composing laser shadowgraph of 2 m height and 18 m width for a test car interior, where both direct and indirect driver’s fields of views are presented.
ISSN:0972-8821
0974-6900
DOI:10.1007/s12596-020-00602-w