RICHARD BURNS, MSW; LCSW; DIPLOMATE
Social Work at Vermont Ave, Los Angeles, CA

4930887, Jun 5, 1990

Nov 25, 1988

7/277591

Richard H. Burns - Los Angeles CA

The United States of America as represented by the Secretary of the Army - Washington DC

G01B 1126, G01B 902

356152

Aligning a stable ring resonator by the use of an inversion mechanism ins the resonator and a pair of anti-symmetric masks. Each mask has opaque and clear parts and the masks are anti-symmetric in that, in use, one mask is positioned so that its opaque and clear parts are anti-symmetric to the opaque and clear parts of the other mask when it is in position. One mask is placed between the radiation source and the beam splitter while the other mask is placed between the beam splitter and the focal plane on which the two beam portions created by the beam splitter focus. One beam portion is directly reflected from the beam splitter and the other portion is transmitted into the resonator and is inverted while following a beam path within the resonator before being outcoupled through the beam splitter in a much weakened state. Thusly positioned, the anti-symmetric masks have the effect to attenuating the intensity of the reflected beam portion, so that the relative intensities of the transmitted and the reflected beam portions are more equal when they arrive at the focal plane. This, in turn, makes the alignment of the two focal spots easy.

4158201, Jun 12, 1979

Oct 18, 1977

5/843192

Michael R. Smith - Thousand Oaks CA
Richard H. Burns - Glendale CA

The Singer Company - New York NY

G06K 1518

340783

A flat PLZT plate is utilized to form erasable images thereon which images may be projected or viewed directly. One embodiment includes electrically conductive islands on one side of the PLZT plate which are surrounded by and electrically isolated from an electrically conductive grid pattern. The portion of the PLZT plate located between an island and the surrounding portion of the grid pattern constitutes a pixel or image forming element. By grounding the grid pattern and applying an electrical charge to selected ones of the islands, an image can be formed on the PLZT plate which can be viewed directly or projected by means of polarized light. In order to form the erasable images on the PLZT plate by optical means, the grid pattern and islands are coated with a layer of photoconductive material upon which a layer of a transparent conductor is coated. By applying a potential to the transparent conductor and exposing the coated PLZT plate to an optical image, those islands subjected to the light radiation receive an electrical charge thereby forming a birefringence image in the PLZT plate.

4213704, Jul 22, 1980

Dec 19, 1977

5/862247

Richard H. Burns - Glendale CA
Kenneth Crabtree - Saugus CA

The Singer Company - Stamford CT

G01B 902

356349

A system for sensing the position of a laser writing beam is provided wherein at least two laser beams of unlike frequency are superimposed on the laser writing beam. The combined laser beams are simultaneously deflected in a common optical deflection system. Once deflected, the unlike frequency laser beams are separated from the writing laser beam and focused onto a diffraction grating. The position of the focused beams of unlike frequency on the diffraction grating corresponds to the position of the writing laser beam on the writing media. The focused laser beams of unlike frequency produce a traveling interference pattern on the grating and are diffracted by the grating into a plurality of beams. By sensing the frequency of at least one of the beams diffracted by the grating, the position and movement of the writing laser beam can be determined.