Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1997-04-23
1999-11-30
Spyrou, Cassandra
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 18, 359 16, 359 15, C02B 532
Patent
active
059952504
ABSTRACT:
A method of manufacturing a fixed hologram plate of a light-beam scanning apparatus for diffracting a light incident from a light source portion by a rotatable hologram, scanning by the diffracted light through the rotation of the rotatable hologram, diffracting the resulting light by the fixed hologram plate, and for conducting a light-beam scanning on a scanning surface. The method includes the steps of preparing an interference fringe distribution of the fixed hologram plate by two waves: a first wave having a spherical aberration, a transverse aberration of the first wave is in the Y direction, the transverse wave including an astigmatism and a coma; and a second wave having a spherical aberration and astigmatism, and having a wavelength different from a wavelength of a reconstructing wave that is selected to minimize distortion, wherein a transverse aberration of the second wave is in the X direction.
REFERENCES:
patent: 4118124 (1978-10-01), Matsuda
patent: 4378142 (1983-03-01), Ono
patent: 4428643 (1984-01-01), Kay
patent: 4505537 (1985-03-01), Funato
patent: 4712852 (1987-12-01), Funato et al.
patent: 4733253 (1988-03-01), Daniele
patent: 4737798 (1988-04-01), Lonis et al.
patent: 4776652 (1988-10-01), Ih
patent: 4810046 (1989-03-01), Yamagishi et al.
patent: 4925262 (1990-05-01), Yamagishi et al.
patent: 4948213 (1990-08-01), Hasegawa et al.
patent: 5039183 (1991-08-01), Meyers
patent: 5061025 (1991-10-01), Debesis
patent: 5157522 (1992-10-01), Markis
patent: 5172252 (1992-12-01), Toyoshima et al.
patent: 5182659 (1993-01-01), Clay et al.
patent: 5295004 (1994-03-01), Hasegawa et al.
patent: 5477348 (1995-12-01), Yamagishi et al.
patent: 5680232 (1997-10-01), Iwamatsu et al.
Communication in Corresponding European Application No. 92907344.3-2205, Aug. 12, 1997, six total pages.
International Search Report for corresponding PCT/JP92/00371, mailed Jun. 23, 1992.
European Search Report for corresponding European Patent Application No. 92 907344.3, dated Feb. 28, 1995.
Aritake Hirokazu
Hasegawa Shin-ya
Kayashima Shigeo
Maeda Satoshi
Chang Audrey
Fujitsu Limited
Spyrou Cassandra
LandOfFree
Method for manufacturing light beam scanning apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for manufacturing light beam scanning apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing light beam scanning apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1680342