Patent EP0240000A2 successfully refreshed from Google Patents.
EP0240000A2
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EP
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Apparatus for separating electromagnetic waves
Assignee: HP Inc
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Filing: 1987-03-31
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Granted: —
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Expires: 2007-03-31
Abstract
Abstract A trichromatic beamsplitter (56) consists of composited dichroic beamsplitter plates (60,62) that separate a projected image into its three color components with spacial as well as spectral precision. A three linear array photosensor comprises a monolithic sensor having three parallel photodiode arrays spaced precisely to accept the color component images of the trichromatic beamsplitter (56).
Inventors
- 👤 Kent D. Vincent
- 👤 Hans D. Neumann
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 13:17
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/30; G01J3/36; G01J3/2803; G02; G02B; G02B27/00; G02B27/10; G02B27/1006; G02B27/1013; G02B27/14; G02B27/145; G02B27/148; H; H04; H04N; H04N1/00; H04N1/46; H04N1/48; H04N1/486; H04N1/488
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
72 words
An apparatus for separating electromagnetic waves having wavelengths, characterized by: a first transparent layer (6 0 ); a first filter (50) contiguous with the first side of said first transparent layer (60) for reflecting said electromagnetic waves having said wavelenghts within a first range; and a second filter (52) contiguous with the second side of said first transparent layer (60) for reflecting said electromagnetic waves having said wavelenghts within a second range.
Claim 2
Independent Claim
72 words
An apparatus for separating electromagnetic waves having wavelengths, characterized by: a first transparent layer (6 0 ); a first filter (50) contiguous with the first side of said first transparent layer (60) for reflecting said electromagnetic waves having said wavelenghts within a first range; and a second filter (52) contiguous with the second side of said first transparent layer (60) for reflecting said electromagnetic waves having said wavelenghts within a second range.
Claim 3
Dependent Claim
46 words
An apparatus as in claim 1, characterized in that a second transparent layer (62) is attached to said second filter (52); and a third filter (54) is contiguous with said second transparent layer (62) for reflecting said electromagnetic waves having said wavelengths within a third range.
Claim 4
Dependent Claim
53 words
An apparatus as in claim 1 or 2, characterized by a transparent extension means (1) attached to said first filter (50) having a first surface (30) oriented normal to the optical axes of said incident electromagnetic waves and a second surface (34) oriented normal to the optical axes of the reflected electromagnetic waves.
Claim 5
Dependent Claim
125 words
An apparatus as in claim 2, characterized by a third transparent layer (") a fourth filter (54) contiguous with the first side of said third transparent layer (62) for reflecting said electromagnetic waves having said wavelengths within said third range; a fifth filter (52) contiguous with the second side of said third transparent layer (62) for reflecting said electromagnetic waves having wavelenghts within said second range; a fourth transparent layer (60) attached to said fifth filter (52); a sixth filter (50) contiguous with said fourth layer (60) for reflecting said electromagnetic waves having said wavelenghts within said first range; and wherein said fourth, fifth and sixth filters (54,52,50) are located to receive said electromagnetic waves reflected from said third, second and first filters (54,52,50) respectively.
Claim 6
Dependent Claim
43 words
An apparatus as in claim 4, characterized in that said fourth, fifth and sixth filters (54,52,50) are located so that said electromagnetic waves having wavelenghts within said first, second and third ranges travel the same optical path lenghts through said transparent layers (60,62).
Claim 7
Dependent Claim
39 words
An apparatus as in claim 5, characterized in that a transparent extension means (1) is attached to said first and fourth filters (50,54) having a surface oriented normal to the optical axes of the incident and exiting electromagnetic waves.
Claim 8
Dependent Claim
18 words
An apparatus as in claim 3 or 6, characterized in that said transparent extension means is a prism.
Claim 9
Dependent Claim
54 words
An apparatus as in claim 7, characterized in that said filters (50,52,54) reflect said electromagnetic waves having said wavelength within said ranges when said electromagnetic wave is incident upon said filters (50,52,54) at 45 degrees; and said filters (50,52,54) and said transparent layers (60,62) are attached to the hypotenuse side (32) of said prism.
Claim 10
Dependent Claim
69 words
An apparatus as in claim 7 in combination with one of claims 4 to 6, characterized in that said filters (50,52,54) reflect said electromagnetic waves having said wavelength within said ranges when said electromagnetic waves are incident upon said filters (50,52,54) at 45 degrees; and said first filter (50) and said fourth filter (54) are attached to the first (30) and second (34) base sides of said prism (1).
Claim 11
Dependent Claim
37 words
An apparatus as in claim 2 or 3, characterized in that said filters (50,52,54) reflect said electromagnetic waves in a direction other than 180 degrees from the optical axes of said electromagnetic waves striking said filters (50,52,54).
Claim 12
Independent Claim
50 words
An apparatus as in one of the preceding claims, characterized by a multiplicity of transparent layers (60,62); a multiplicity of filters (50,52,54) located on said transparent layers (60,62) wherein said filters reflect different ranges of electromagnetic wavelengths; and wherein said transparent layers (60,62) with said filters (50,52,54) are mounted together.
Claim 13
Independent Claim
29 words
An apparatus as in one of the preceding claims, characterized in that photosensor means (11) are aligned to receive said electromagnetic waves reflected from each of said filters (50,52,54).
Claim 14
Independent Claim
35 words
An apparatus as in one of the preceding claims, characterized by a lens (6) to focus said electromagnetic waves onto said filters (50,52,54); and an illumination source (22) spectrally tailored to the output device (18,11).
Claim 15
Dependent Claim
20 words
An apparatus as in claim 12, characterized in that said filters (50,52,54) and said photosensor means (11) are packaged together.
Claim 16
Independent Claim
28 words
An apparatus as in one of the preceding claims, characterized in that said transparent layer (60,62) and said transparent extension means (1) is made from glass or plastic.
Claim 17
Independent Claim
24 words
An apparatus as in one of the preceding claims, characterized by a means (1) for equalizing the optical path lengths of said electromagnetic waves.
Claim 18
Independent Claim
23 words
An apparatus as in one of claims 1 to 10 or 16, characterized by a means (11) for detecting said reflected electromagnetic waves.
Claim 19
Dependent Claim
45 words
An apparatus as in claim 17, characterized in that said filters (50,52,54) are precisely located from each other in order to facilitate the creation of equal optical path lengths and to facilitate the alignment of said photosensor means (11) for detecting said separated electromagnetic waves.
Claim 20
Independent Claim
22 words
An apparatus as in one of claims 12 to 18, characterized in that said photosensor means (11) are photosensor arrays (12,13, 14).
Claim 21
Dependent Claim
21 words
An apparatus as in claim 19, characterized in that said photosensor arrays (12, 13,14) are located on the same integrated circuit.
Claim 22
Independent Claim
58 words
A method of manufacturing an apparatus for separating electromagnetic waves comprising the steps: forming a thick glass substrate (70); applying a first filter (54) to said substrate (70); attaching a thin glass layer (62) to said filter (54); grinding said glass layer (62); polishing said glass layer (62); and applying a second filter (52) to said substrate (70).
Claim 23
Independent Claim
58 words
A method of manufacturing an apparatus for separating electromagnetic waves comprising the steps: forming a thick glass substrate (70); applying a first filter (54) to said substrate (70); attaching a thin glass layer (62) to said filter (54); grinding said glass layer (62); polishing said glass layer (62); and applying a second filter (52) to said substrate (70).
References Cited (Backward Citations)
No citation records indexed.
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