Michael F Goff

Address:

1832 Petaluma Ave, Long Beach, CA 90815

Phone:

3103340976

VIN:

4T1BF1FK5CU082600

Make:

TOYOTA

Model:

CAMRY

Year:

2012

US Patent:

46296689, Dec 16, 1986

Filed:

Mar 12, 1985

Appl. No.:

6/710919

Inventors:

Alan B. Hamersley - Orange CA
Michael W. Goff - La Mirada CA
Vinai K. Thummalapally - Anaheim CA
Thomas M. Whitworth - Huntington Beach CA
Ramchandra R. Nomula - Irvine CA

Assignee:

Quixote Corporation - Chicago IL

International Classification:

G01G 1534

US Classification:

430 11

Abstract:

An information recording medium includes a substrate having first and second sides. A layer of photoresist is deposited on the first side of the substrate. This layer of photoresist has a selected thickness and defines an area of openings therein such that the first side of the substrate is exposed at the openings, the openings being distributed in a pattern indicative of selected stored information. A reflecting layer is deposited on the photoresist layer and on the first side of the substrate at the openings. Both the substrate and the layer of photoresist are adapted to transmit the reading beam such that a portion of the reading beam incident on the second side of the substrate is reflected out of the substrate by the reflecting layer, both in a first region comprising the openings and in a second region between the openings. The selected thickness of the photoresist is chosen to provide destructive interference between the portions of the reading beam reflected out of the substrate by the reflecting layer in the first and second regions. Methods for forming such a recording medium by photolithographic techniques are disclosed.

US Patent:

47358785, Apr 5, 1988

Filed:

Aug 28, 1986

Appl. No.:

6/901896

Inventors:

Alan B. Hamersley - Orange CA
Michael W. Goff - La Mirada CA
Vinai K. Thummalapally - Anaheim CA
Thomas M. Whitworth - Huntington Beach CA
Ramchandra R. Nomula - Irvine CA

Assignee:

Quixote Corporation - Chicago IL

International Classification:

G03C 900
G03C 500
G01D 900

US Classification:

430 11

Abstract:

An information recording medium includes a substrate having first and second sides. A layer of photoresist is deposited on the first side of the substrate. This layer of photoresist has a selected thickness and defines an area of openings therein such that the first side of the substrate is exposed at the openings, the openings being distributed in a pattern indicative of selected stored information. A reflecting layer is deposited on the photoresist layer and on the first side of the substrate at the openings. Both the substrate and the layer of photoresist are adapted to transmit the reading beam such that a portion of the reading beam incident on the second side of the substrate is reflected out of the substrate by the reflecting layer, both in a first region comprising the openings and in a second region between the openings. The selected thickness of the photoresist is chosen to provide destructive interference between the portions of the reading beam reflected out of the substrate by the reflecting layer in the first and second regions. Methods for forming such a recording medium by photolithographic techniques are disclosed.