G - Physics – 02 – B
Patent
G - Physics
02
B
26/197, 88/96, 8
G02B 26/10 (2006.01) G02B 5/32 (2006.01)
Patent
CA 1320855
LASER BEAM SCANNER AND ITS FABRICATING METHOD ABSTRACT OF THE DISCLOSURE There is provided a laser beam scanner comprising a beam source for generating a semiconductor laser beam; a rotary hologram for diffracting the semiconductor laser beam to form a scanning beam on a surface to be scanned; and an aberration correcting stationary hologram disposed between the beam source and the rotary hologram, wherein the stationary hologram is constructed with an object wave and a reference wave being interfered on a stationary hologram substrate subject that an aberration of the scanning beam on the surface to be scanned shall be corrected, the object wave being a spherical wave having an aberration, a wavelength shorter than that of the semiconductor laser beam, and an incident angle which is not vertical but inclined with respect to the stationary hologram substrate.
515003
Hasegawa Shin-Ya
Ikeda Hiroyuki
Inagaki Takefumi
Kato Masayuki
Yamagishi Fumio
Fujitsu Limited
Mcfadden Fincham
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