US4931859A — Schlieren color television image aperturing device

Claim 1

Independent Claim 86 words

In a television projection system having means to produce an image comprised of a plurality of spatially separated, converging rays of component colors, means to focus said rays along an optical axis at a focal point, said image being thereby unsuited to aperture control, the improvement comprising means to translate said image into a like image comprised of a plurality of pixels, said pixels being comprised of a plurality of spatially combined diverging rays of combined colors, said like image being thereby suitable for aperture control.

Claim 2

Dependent Claim 86 words

In a television projection system having means to produce an image comprised of a plurality of spatially separated, converging rays of component colors, means to focus said rays along an optical axis at a focal point, said image being thereby unsuited to aperture control, the improvement comprising means to translate said image into a like image comprised of a plurality of pixels, said pixels being comprised of a plurality of spatially combined diverging rays of combined colors, said like image being thereby suitable for aperture control.

Claim 3

Dependent Claim 14 words

The device of claim 1 wherein said translation means comprises a rear projection screen.

Claim 4

Dependent Claim 37 words

The device of claim 2 wherein said rear projection screen is comprised of a plurality of fiber optic fiber elements arranged in coherent fashion and aligned parallel to the optical axis and at the focal point thereof.

Claim 5

Dependent Claim 26 words

The device of claim 3 wherein said fiber optic rear projection screen (FORPS) is approximately 0.06 inches thick and has a numerical aperture of approximately 0.35.

Claim 6

Dependent Claim 23 words

The device of claim 4 wherein both sides of the FORPS are polished and further comprising an anti-reflective coating applied to both sides.

Claim 7

Dependent Claim 15 words

The device of claim 1 wherein the television projection system utilizes a Schlieren light valve.

Claim 8

Dependent Claim 25 words

The device of claim 6 further comprising a plurality of optical elements aligned along the optical axis to further process said translated image for projection.

Claim 9

Dependent Claim 98 words

In a television projection system utilizing a Schlieren light valve having means to produce an image, said image being thereby comprised of a plurality of rays each having a specific color distribution, said rays being focused along an optical axis to a focal point, said image formed at said focal point being comprised of a plurality of pixels, the improvement comprising means to translate said plurality of pixels into a plurality of rays, each of said rays having a non-specific color distribution so that said translated image may be further processed by aperturing techniques without significant degradation thereof.

Claim 10

Dependent Claim 98 words

In a television projection system utilizing a Schlieren light valve having means to produce an image, said image being thereby comprised of a plurality of rays each having a specific color distribution, said rays being focused along an optical axis to a focal point, said image formed at said focal point being comprised of a plurality of pixels, the improvement comprising means to translate said plurality of pixels into a plurality of rays, each of said rays having a non-specific color distribution so that said translated image may be further processed by aperturing techniques without significant degradation thereof.

Claim 11

Dependent Claim 25 words

The device of claim 8 further comprising a plurality of optical elements aligned along the optical axis to further process the translated image for projection.

Claim 12

Dependent Claim 34 words

The device of claim 8 wherein said translation means comprises a fiber optic rear projection screen (FORPS), said FORPS being aligned along the optical axis of the image and at the focal point thereof.

Claim 13

Dependent Claim 32 words

The device of claim 10 further comprising a lens means aligned along the optical axis of the projected image, said lens means having means to focus the projected image on the FORPS.

Claim 14

Dependent Claim 26 words

The device of claim 10 wherein said fiber optic rear projection screen (FORPS) is approximately 0.06 inches thick and has a numerical aperture of approximately 0.35.

Claim 15

Dependent Claim 31 words

The device of claim 8 wherein said translation means comprises a bundle of fiber optic elements, an end of said bundle being positioned at the focal point of the image source.

Claim 16

Dependent Claim 104 words

In a television projection system utilizing a Schlieren light valve having means to produce an image, said light valve thereby having means to produce a plurality of rays each having a specific color distribution which when focused along an optical axis at a focal point produce an image, the improvement comprising means positioned at said focal point for resolving said image into a plurality of pixels and translating said image at the pixel level into a plurality of rays, each of said rays having a non-specific color distribution so that said translated image may be further processed by aperturing techniques without significant degradation thereof.

Claim 17

Dependent Claim 104 words

In a television projection system utilizing a Schlieren light valve having means to produce an image, said light valve thereby having means to produce a plurality of rays each having a specific color distribution which when focused along an optical axis at a focal point produce an image, the improvement comprising means positioned at said focal point for resolving said image into a plurality of pixels and translating said image at the pixel level into a plurality of rays, each of said rays having a non-specific color distribution so that said translated image may be further processed by aperturing techniques without significant degradation thereof.

Claim 18

Dependent Claim 28 words

The device of claim 14 wherein each of said pixels which comprise the image are each comprised of a plurality of said rays having a non-specific color distribution.

Claim 19

Dependent Claim 16 words

The device of claim 15 wherein said resolving and translating means comprises a rear projection screen.

Claim 20

Dependent Claim 37 words

The device of claim 16 wherein said rear projection screen is comprised of a plurality of fiber optic fiber elements arranged in coherent fashion and aligned parallel to the optical axis and at the focal point thereof.

Claim 21

Dependent Claim 26 words

The device of claim 17 wherein said fiber optic rear projection screen (FORPS) is approximately 0.06 inches thick and has a numerical aperture of approximately 0.35.

Claim 22

Dependent Claim 25 words

The device of claim 18 further comprising a plurality of optical elements aligned along the optical axis to further process said translated image for projection.

Claim 23

Dependent Claim 19 words

The device of claim 17 wherein each of said fiber elements defines the size of each of said pixels.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1993-06-04	1993-12-04	1994-06-05	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1997-06-04	1997-12-04	1998-06-05	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2001-06-04	2001-12-04	2002-06-05	$7700.00	Window Closed / Lapsed

Schlieren color television image aperturing device

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