Optical disc player with molded diffractive optical elements

Details Optical disc player with molded diffractive optical elements Optical disc player with molded diffractive optical elements

1996-07-10

1998-10-20

Huber, Paul W.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

264 25, G11B 700, B29D 1100

Patent

active

058257411

ABSTRACT:
A method of fabricating a diffractive optical element includes the steps of: etching a negative of a desired multi-level diffraction pattern onto a molding surface of a quartz master element using photolithography, assembling the master element as a portion of a mold,and injecting a plastic molding composition into the mold and against the molding surface of the master element to injection mold a diffractive optical element whereby the optical element has the desired diffraction pattern on its surface. The diffraction pattern is preferably formed on the quartz master using VLSI photolithography.

REFERENCES:
patent: 4607914 (1986-08-01), Fienup
patent: 4793953 (1988-12-01), Maus
patent: 4818045 (1989-04-01), Chang
patent: 4830441 (1989-05-01), Chang
patent: 4879167 (1989-11-01), Chang
patent: 4895790 (1990-01-01), Swanson et al.
patent: 4902100 (1990-02-01), Reynolds et al.
patent: 4960311 (1990-10-01), Moss et al.
patent: 4981332 (1991-01-01), Smith
patent: 5013494 (1991-05-01), Kubo et al.
patent: 5071208 (1991-12-01), Chang
patent: 5071597 (1991-12-01), D'Amato et al.
patent: 5073007 (1991-12-01), Keomi et al.
patent: 5083850 (1992-01-01), Mallik et al.
patent: 5105049 (1991-04-01), Chang
patent: 5116548 (1992-05-01), Mallik et al.
patent: 5119231 (1992-06-01), Nelson et al.
patent: 5122903 (1992-06-01), Aoyama et al.
patent: 5124815 (1992-06-01), Chang
patent: 5162927 (1992-11-01), Moss et al.
patent: 5200253 (1993-04-01), Yamaguchi et al.
patent: 5218471 (1993-06-01), Swanson et al.
patent: 5227897 (1993-07-01), Fohrman et al.
patent: 5227915 (1993-07-01), Grossinger et al.
patent: 5229797 (1993-07-01), Futhey et al.
patent: 5243449 (1993-09-01), Smith
patent: 5243583 (1993-09-01), Ohuchida et al.
patent: 5298366 (1994-03-01), Iwasaki et al.
patent: 5345544 (1994-09-01), Iwasaki et al.
patent: 5446565 (1995-08-01), Kemma et al.
patent: 5538674 (1996-07-01), Nisper et al.
Oct. 1994 Edition of Laser Focus World; "Diffraction Optics Move into the Commercial Arena"; M.R. Feldman Oct. 1994.
Feb./Mar. 1994, San Dimas, CA, Newspaper Article "Innovative Lens Focus of Company's Future" by Randyl Drummer Feb. 1994.

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