US3624834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical concentrator without flux loss
Assignee: Bpifrance Financement SA
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Filing: 1969-06-12
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Granted: 1971-11-30
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Expires: 1989-06-12
Abstract
Abstract The present invention relates to an optical concentrator without flux loss, comprising a parabolic frontal mirror with half opening 1 (angle made to the optical axis by a straight line that joins the focus to the mirror edge) effecting a primary concentration of a flux captured from a distance source of radiation, forming a spot image in the smallest section of a beam of convergent rays with half angle opening theta 1 with the optical axis, and a truncated cone mirror whose entrance section of diameter d1 is disposed in coincidence with the total spot image furnished by the said frontal parabolic mirror and whose terminal section which is of smaller diameter is associated with a sensitive element or radiation transformer of a receiver.
Inventors
- 👤 Pierre Malifaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:29
CPC Classifications
G; G02; G02B; G02B19/00; G02B19/0033; G02B19/0076; F; F24; F24S; F24S23/00; F24S23/70; F24S23/79; G01; G01J; G01J1/00; G01J1/02; G01J1/04; G01J1/0407; G01J1/0411; G01J1/0422; G02B19/0004; G02B19/0019; G02B19/0038; G02B19/0042; G02B19/009; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
163 words
Optical concentrator without flux loss, comprising a frontal parabolic mirror with half opening angle theta 1 (angle made by a straight line joining the focus to the mirror edge and the optical axis) affecting a primary concentration of a flux captured from a distant radiation source, forming a spot image in the smallest section of a bundle of convergent rays with half angle of opening theta 1 with the optical axis, and a truncated cone mirror whose entrance section of diameter d1 is disposed in coincidence with the total spot image furnished by the said frontal parabolic mirror and whose terminal section which is of smaller diameter is associated with a sensitive element or radiation transformer of a receiver, characterized in that the half angle of opening theta 1 of the frontal parabolic mirror (1), the half angle at the apex gamma and the diameter d2 of the terminal section of the truncated cone mirror (4) are determined by dimensioning equations as follows:
Claim 2
Dependent Claim
163 words
Optical concentrator without flux loss, comprising a frontal parabolic mirror with half opening angle theta 1 (angle made by a straight line joining the focus to the mirror edge and the optical axis) affecting a primary concentration of a flux captured from a distant radiation source, forming a spot image in the smallest section of a bundle of convergent rays with half angle of opening theta 1 with the optical axis, and a truncated cone mirror whose entrance section of diameter d1 is disposed in coincidence with the total spot image furnished by the said frontal parabolic mirror and whose terminal section which is of smaller diameter is associated with a sensitive element or radiation transformer of a receiver, characterized in that the half angle of opening theta 1 of the frontal parabolic mirror (1), the half angle at the apex gamma and the diameter d2 of the terminal section of the truncated cone mirror (4) are determined by dimensioning equations as follows:
Claim 3
Dependent Claim
35 words
Optical concentrator as in claim 1, characterized in that in the case in which the half angle of opening theta 1 is between 10* and 30*, angle theta 1 is determined by the following equation:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |