Marvin F Hodges

US Patent:

50661140, Nov 19, 1991

Filed:

Apr 26, 1990

Appl. No.:

7/514606

Inventors:

Marvin P. Hodges - Westlake Village CA

International Classification:

G02B 106
G02B 312

US Classification:

359665

Abstract:

A lens system that utilize a high refractive index enveloping medium in which one or more lens elements of low refractive index material are interspersed within the fluid is disclosed. Preferably, the enveloping medium is a liquid optical fluid contained in a hollow shell. Hollow air-filled chambers, fabricated from a material similar in refractive index as that of the fluid, are supported in the liquid and serve as low index refractive elements in the higher index enveloping medium.

US Patent:

41914511, Mar 4, 1980

Filed:

Apr 21, 1978

Appl. No.:

5/898837

Inventors:

Marvin P. Hodges - Woodland Hills CA

Assignee:

Marv Hodges, Inc. - St. Petersburg FL

International Classification:

G03B 2160

US Classification:

350126

Abstract:

The improved projection screen of the invention comprises a substrate of extended area upon which has been deposited, as by printing, or casting, in accordance with the method, a pattern of liquid-containing elements of desired shape and size, which are then solidifed as by drying or chilling, in accordance with the method, to permanent light-affecting form. In one embodiment, the liquid includes a thixotropic agent to aid in shape retention during permanent solidification. Such liquid may comprise a polymer such as polyvinyl chloride, or the like, to which has been added a hardening agent and/or slip agent. Permanent solidification can be accomplished by drying, catalysis, temperature reduction or elevation or any other suitable means. In another embodiment, a substrate can be extrusion casted or the like with one surface bearing the desired optical shape, or the surface of a preformed heat deformable substrate can be heated and deformed to the desired optical configuration and then solidified, as by chilling. the solidified optical elements can be in any desired size, pattern, shape and profile thickness and may be transparent or opaque, with or without light-defracting inclusions and/or matte surface portions or the like.

US Patent:

53371798, Aug 9, 1994

Filed:

Jul 27, 1992

Appl. No.:

7/920206

Inventors:

Marvin P. Hodges - Westlake Village CA

International Classification:

G03B 2156

US Classification:

359443

Abstract:

A flexible optical surface, film or laminate using a non-rigid support substrate with a sufficient modulus of elasticity defining a controllable surface having a flat state so that repeatedly rolling-up the support substrate into a coiled state does not influence the flat state of the optical surface. The controllable surface can have one or more optical layers secured to the support substrate and use an optical pattern with predetermined optical characteristics to modulate incident light energy. One of the optical layers can be a reflective layer for forming a reflective controllable surface. The predetermined optical characteristic can modulate incident light energy to varying degrees such as by using a differential refraction or gain optical pattern according to the laws of optics.

US Patent:

47558687, Jul 5, 1988

Filed:

Jul 27, 1987

Appl. No.:

7/078317

Inventors:

Marvin P. Hodges - Westlake Village CA

Assignee:

TDS Patent Management, Inc. - Scarsdale NY

International Classification:

H04N 931
H04N 574
H01J 2910
H01J 3100

US Classification:

358 60

Abstract:

A multiple tube projection television system. At least two image generating cathode ray tubes are provided, having an image generating surface which is concave. The radius of curvature of the image generating tubes is selected to be between 1. 2 and 2 times the image diagonal of each tube. Dichroic mirror means are provided to combine the images produced from each tube. A projection lens system is positioned at an optical distance from each tube which is substantially equal to the radius of curvature of the concave phosphor surface. The combination provides for an optimum amount of light to the entrance aperture of the projection lens system.

US Patent:

41639901, Aug 7, 1979

Filed:

Apr 24, 1978

Appl. No.:

5/899361

Inventors:

Marvin P. Hodges - Woodland Hills CA

International Classification:

H04N 916
H04N 574

US Classification:

358 64

Abstract:

A system for projecting a color television image is described which comprises a plurality of cathode ray tubes, each of different monochromatic color and each having an image display screen, an optic having an equal plurality of successive reflective surfaces, each being selectively reflective to one of the different monochromatic colors and positioned such that each surface reflects an image appearing on the display screen of one of the plurality of tubes, and a lens disposed behind the tubes to transmit a composite color image of the images reflected from the successive reflective surfaces.