20 August 1986 Lensless Holographic Line Scanner
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Proceedings Volume 0615, Practical Holography; (1986) https://doi.org/10.1117/12.961031
Event: O-E/LASE'86 Symposium, 1986, Los Angeles, CA, United States
Abstract
A new lensless holographic line scanner has been developed. The scanner consists of two holographic elements, a holographic disk with a flat-field focusing function and a newly devised holographic lens. The holographic lens was designed to circularize the laser diode beam, correct scanning beam aberrations, and reduce positioning error caused by mode hopping of a laser diode. In fabricating the holographic lens, chromatic aberration caused by the difference between the wavelength used for fabrication and that used for operation was successfully corrected by the use of plano-convex and plano-concave lenses. The lensless holographic scanner was found to have a scanning beam diameter of 170 um for a scanning width of 220 mm.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fumio Yamagishi, Fumio Yamagishi, Shinya Hasegawa, Shinya Hasegawa, Hiroyuki Ikeda, Hiroyuki Ikeda, Takefumi Inagaki, Takefumi Inagaki, } "Lensless Holographic Line Scanner", Proc. SPIE 0615, Practical Holography, (20 August 1986); doi: 10.1117/12.961031; https://doi.org/10.1117/12.961031
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