Thomas E Mclaughlin

40472078, Sep 6, 1977

Jan 13, 1976

5/648779

Richard M. Altman - Woodland Hills CA
Thomas D. McLaughlin - Thousand Oaks CA

Optigon Research & Development Corporation - Santa Monica CA

G03B 1312
G03B 1912

354155

A viewfinder system for a single lens reflex camera where the field lens of the system is positionable in accordance with the distance of the objective lens exit pupil from the focal plane and eyepiece lenses are positionable in accordance with the field lens to maintain uniform viewfinder brightness without any essential change in image magnification.

41212347, Oct 17, 1978

Apr 5, 1977

5/784711

Richard M. Altman - Woodland Hills CA
Thomas D. McLaughlin - Thousand Oaks CA

Vivitar Corporation - Santa Monica CA

G03B 1302
G03B 1912
G02B 514

354201

An optica image forming screen which comprises a multiplicity of light-transmitting elements in a matrix of light-absorbing elements so that light incident upon the elements at an angle greater than a predetermined angle will be internally absorbed by the elements, with no significant reflection internal to the elements and with element size conducive to a scattering effect by using diffraction in the image space.

40472221, Sep 6, 1977

Jan 13, 1976

5/648780

Jacob Moskovich - Hollywood CA
Gary E. Wiese - Canoga Park CA
Richard M. Altman - Woodland Hills CA
Thomas D. McLaughlin - Thousand Oaks CA

Optigon Research & Development Corporation - Santa Monica CA

G03B 1306
G03B 1912

354155

A viewfinder system for a through-the-lens viewing camera which includes a focusing screen, a field lens, a prism, and an eyepiece is disclosed where the field lens is positionable in accordance with the position of the exit pupil of the objective lens and the eyepiece is positioned in accordance with the position of the field lens. Negative optical power is introduced between the field lens and the prism, and the prism design substantially reduces the size of the prism without sacrificing viewfinder brightness.

20210321756, Oct 21, 2021

Jul 16, 2020

16/930989

- Los Angeles CA, US
Thomas McLaughlin - Los Angeles CA, US

A46B 9/04
A46B 9/02
A46B 5/00
A46B 11/00

An apparatus for the interdiction of periodontal disease comprising a device the size of a US quarter coin capable of being chewed by a user, and which is configured with finger protrusions having fabricated blade ends capable of removing plaque from the teeth surface and disrupting plaque accumulated in the gingivae pockets of the teeth. The device of the apparatus is additionally configured with re-fillable inserts holding hygienic formulations to limit bacterial growth and flush plaque debris out of the gingivae pockets of the teeth. Some embodiments of the device of the apparatus are wholly digestible. The device of the apparatus is portable and comes in a plurality of embodiments in different shapes, all having the basic functionality of, self-treating periodontal disease.