US3609023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headup display systems for aircraft piloting
Assignee: Thales SA
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Filing: 1968-06-21
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Granted: 1971-09-28
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Expires: 1988-06-21
Abstract
Abstract A lighting arrangement for illuminating reticles in a headup display system comprises a hollow shaft having opaque walls and fixed to a movable assembly controlled in position, the reticle being formed in an end wall of this shaft, and a lampholder slidably mounted in this shaft for carrying plugin bulbs inside this shaft. This arrangement also comprises a translucent body between the bulbs and the reticle and printed circuits plugged into the lampholder for supplying the bulbs. A colored filter may be positioned between the reticle and the bulbs or in front of the reticle.
Inventors
- 👤 Jean Turboult
- 👤 Marcel Morion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:31
CPC Classifications
B; B64; B64D; B64D43/00; F; F21; F21W; F21W2111/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
209 words
A movable arrangement for illuminating a reticle in a headup display system, used in an aircraft for projecting At infinity in front of the pilot the luminous images of reticles for providing him with the information corresponding to the aircraft flight, (each reticle being mounted on a movable assembly controlled in position,) said arrangement being controlled in position and said reticle being locked with said arrangement, said arrangement comprising: a hollow shaft having opaque lateral walls and one opaque end wall, (fixed to said assembly), said reticle being formed in said end wall; a lampholder slidably mounted in said hollow shaft, said lampholder being suitable for pluging-in at least two lamps; at least two lamps supported by said lampholder, inside said shaft means for selectively lighting different portions of said reticle, said means comprising at least one partition between said lampholder and said end wall for building up at least two separately lightable compartment, each compartment comprising at least one of said lamps, (at least one lamp supported by said lampholder inside said shaft;) a translucent body for diffusing the light emitted by said lamps, said body being arranged between said lamps and said reticle; and means associated with said lampholder for connecting (of) said lamps to a source.
Claim 2
Dependent Claim
209 words
A movable arrangement for illuminating a reticle in a headup display system, used in an aircraft for projecting At infinity in front of the pilot the luminous images of reticles for providing him with the information corresponding to the aircraft flight, (each reticle being mounted on a movable assembly controlled in position,) said arrangement being controlled in position and said reticle being locked with said arrangement, said arrangement comprising: a hollow shaft having opaque lateral walls and one opaque end wall, (fixed to said assembly), said reticle being formed in said end wall; a lampholder slidably mounted in said hollow shaft, said lampholder being suitable for pluging-in at least two lamps; at least two lamps supported by said lampholder, inside said shaft means for selectively lighting different portions of said reticle, said means comprising at least one partition between said lampholder and said end wall for building up at least two separately lightable compartment, each compartment comprising at least one of said lamps, (at least one lamp supported by said lampholder inside said shaft;) a translucent body for diffusing the light emitted by said lamps, said body being arranged between said lamps and said reticle; and means associated with said lampholder for connecting (of) said lamps to a source.
Claim 3
Dependent Claim
24 words
An arrangement as claimed in claim 1 further comprising an optical colored filter arranged for said luminous image of said reticle to be colored.
Claim 4
Dependent Claim
21 words
An arrangement as claimed in claim 2, wherein said filter is placed inside said shaft between said reticle and said lamps.
Claim 5
Dependent Claim
33 words
An arrangement as claimed in claim 2, wherein said filter is placed in front of said reticle and has dimensions at least equal to the dimensions of the display range of said reticle.
Claim 6
Dependent Claim
20 words
An arrangement as claimed in claim 4, wherein said filter is removable and means are provided for removing said filter.
Claim 7
Dependent Claim
22 words
An arrangement as claimed in claim 1, wherein said lamps are plugin lamps and said lampholder comprises sockets for holding said lamps.
Claim 8
Dependent Claim
43 words
An arrangement as claimed in claim 6, wherein each of said plugin lamps comprises a miniature bulb with connections for soldering, two pins respectively soldered to said connections, and a collar sealed to said bulb and having holes through which said pins extend.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |