Patent US6859442B1 successfully refreshed from Google Patents.
Patent EP0325363A2 successfully refreshed from Google Patents.
EP0325363A2
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Spectral conditioner
Assignee: HP Inc
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Filing: 1989-01-12
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Granted: —
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Expires: 2009-01-12
Abstract
Abstract The present invention employs a spectral and spatial combiner (132) that is capable of maintaining equal optical path lengths of each spectral beam so that a single combined bean (148) can be produced and can be employed in a number of different applications such as a color camera device (Figure 28), a color recording device (Figure 23), a graphics presentation device (Figure 27), an electronic color filter device (Figure 30), a color projector device (Figure 25) and a multi-channel optical communication device (Figures 31 and 33).
Inventors
- 👤 Kent D. Vincent
- 👤 Hans D. Neumann
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:22
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/25; H04B10/2581; G; G02; G02B; G02B27/00; G02B27/10; G02B27/1006; G02B27/1013; G02B27/14; G02B27/145; G02B27/148; H04N; H04N1/00; H04N1/46; H04N1/48; H04N1/486; H04N1/488; H04N1/50; H04N1/502; H04N9/00; H04N9/12; H04N9/31; H04N9/3102; H04N9/3105; H04N9/3108
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
132 words
An electronic color filter device for filtering an input optical beam (334) comprising: means for focusing (340) said input optical beam on an aperture plane (344); spectral separator means (342) disposed between said means for focusing (340) and said aperture plane (344) for spatially and spectrally separating said input optical beam (334) into a plurality of optical beams such that each of said plurality of optical beams has a predetermined spectral range and optical axes that are substantially parallel and that have optical path lengths that are substantially equal; aperture means (346,348,350) disposed on said aperture plane and aligned with said plurality of optical beams focused on said aperture plane for separately controlling transmission intensity of said each of said plurality of optical beams in response to an electrical filter control signal.
Claim 2
Dependent Claim
132 words
An electronic color filter device for filtering an input optical beam (334) comprising: means for focusing (340) said input optical beam on an aperture plane (344); spectral separator means (342) disposed between said means for focusing (340) and said aperture plane (344) for spatially and spectrally separating said input optical beam (334) into a plurality of optical beams such that each of said plurality of optical beams has a predetermined spectral range and optical axes that are substantially parallel and that have optical path lengths that are substantially equal; aperture means (346,348,350) disposed on said aperture plane and aligned with said plurality of optical beams focused on said aperture plane for separately controlling transmission intensity of said each of said plurality of optical beams in response to an electrical filter control signal.
Claim 3
Dependent Claim
79 words
The electronic color filter device of claim 1 further comprising: spectral combiner means (352) for spatially and spectrally combining said plurality of optical beams into a single combined output beam (336) having a predetermined single optical axis such that said optical axes of said plurality of optical beams have substantially equal optical path lengths and are substantially aligned with said single optical axis to form said single combined output beam; means for focusing (354) said single combined output beam.
References Cited (Backward Citations)
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