EP0096529A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Dichroic plate
Assignee: Kent Scientific and Industrial Projects Ltd
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Filing: 1983-06-01
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Granted: —
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Expires: 2003-06-01
Abstract
Abstract Dichroic plate comprising a regular grid (10) and a respective element (12) within each interstice of the grid (10), the elements (12) being identical and of substantially non-re-entrant shape. A preferred shape for the elements (12) is a hollow square. Improvements relating to ease of design, proximity and stability of reflection and transmission bands and mitigation of cross polarization phenomena can be achieved.
Inventors
- 👤 Edward Andrew Parker
- 👤 Richard Jonathan Langley
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:07
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/0006; H01Q15/0013; H01Q15/0033; G; G02; G02B; G02B5/00; G02B5/20; G02B5/204
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
36 words
A dichroic plate comprising a regular grid (10) and a respective element (12) within each interstice of the grid (10), the elements (12) being identical charcterised in that the elements (12) are of substantially non-re-entrant shape.
Claim 2
Dependent Claim
36 words
A dichroic plate comprising a regular grid (10) and a respective element (12) within each interstice of the grid (10), the elements (12) being identical charcterised in that the elements (12) are of substantially non-re-entrant shape.
Claim 3
Dependent Claim
16 words
A dichroic plate as claimed in claim 1, charaterised in that the elements (12) are hollow.
Claim 4
Dependent Claim
16 words
A dichroic plate as claimed in claim 1, characterised in that the elements (12) are solid.
Claim 5
Dependent Claim
17 words
A dichroic plate as claimed in any preceding claim, characterised in that the elements (12) are rectangular.
Claim 6
Dependent Claim
20 words
A dichroic plate as claimed in any of claims 1 to 3, characterised in that the elements (12) are elliptical.
Claim 7
Dependent Claim
16 words
A dichroic plate as claimed in claim 4, characterised in that the elements (12) are square.
Claim 8
Dependent Claim
16 words
A dichroic plate as claimed in claim 5, characterised in that the elements (12) are circular.
Claim 9
Dependent Claim
23 words
A dichroic plate as claimed in any preceding claim, characterised in that the grid (10) and the elements (12) are formed of conductors.
Claim 10
Dependent Claim
25 words
A dichroic plate as claimed in any of claims 1 to 7, characterised by having the Babinet compliment form of the plate of claim 8.
References Cited (Backward Citations)
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