US3915575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflector arrangement
Assignee: Erwin Sick GmbH Optik Elektronik
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Filing: 1974-10-01
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Granted: 1975-10-28
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Expires: 1994-10-01
Abstract
Abstract A reflector arrangement for use with an optical device having a light transmitter and receiver. The reflector arrangement has a reflector with an aperture, and a sighting plate and, in use, light from the light transmitter impinges on the reflector and some of the light passes through the aperture to be received on the sighting plate. Light reflected from the reflector is thrown onto the light receiver, and correct alignment of the transmitted and received light is obtained by moving the reflector arrangement about at least two axes perpendicular to the optical axis of the arrangement until the image of the light transmitter is centered on the sighting plate. The sighting plate is viewed from behind to make the necessary adjustment to the reflector arrangement.
Inventors
- 👤 Erwin Sick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:33
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/53; G01N21/534; G02; G02B; G02B27/00; G02B27/30; G02B5/00; G02B5/12; G02B5/122; G02B5/124
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
111 words
A reflector arrangement for use with an optical device comprising a light transmitter and a light receiver disposed at distance from the reflector arrangement, said arrangement comprising a reflector having an aperture and a sighting plate at a spaced distance relative to the reflector, the reflector, in use, being disposed to receive light from the transmitter so that light passes through the said aperture and is received on said sighting plate and disposed to reflect light back to said receiver, means mounting the saiD arrangement being provided, and means also being provided for moving the arrangement about at least two axes substantially perpendicular to the direction of the transmitted light beam.
Claim 2
Dependent Claim
111 words
A reflector arrangement for use with an optical device comprising a light transmitter and a light receiver disposed at distance from the reflector arrangement, said arrangement comprising a reflector having an aperture and a sighting plate at a spaced distance relative to the reflector, the reflector, in use, being disposed to receive light from the transmitter so that light passes through the said aperture and is received on said sighting plate and disposed to reflect light back to said receiver, means mounting the saiD arrangement being provided, and means also being provided for moving the arrangement about at least two axes substantially perpendicular to the direction of the transmitted light beam.
Claim 3
Dependent Claim
21 words
The arrangement set forth in claim 1 wherein the sighting plate is mounted in a fixed position relative to the reflector.
Claim 4
Dependent Claim
28 words
The arrangement set forth in claim 1 wherein the sighting plate is so positioned relative to the reflector that the said plate receives light substantially at its centre.
Claim 5
Dependent Claim
16 words
The arrangement set forth in claim 1 wherein the sighting plate is a ground glass screen.
Claim 6
Dependent Claim
19 words
The arrangement set forth in claim 1 wherein one or more sighting lines are provided on the sighting plate.
Claim 7
Dependent Claim
29 words
The arrangement set forth in claim 5 wherein at least one annular sighting line is provided around the point of intersection of the optical axis with the sighting plate.
Claim 8
Dependent Claim
28 words
The arrangement set forth in claim 6 wherein the one or each annular sighting line has a larger diameter than the light spot thrown onto the sighting plate.
Claim 9
Dependent Claim
34 words
The arrangement set forth in claim 1 wherein the reflector element and sighting plate are mounted in a casing, said casing including a cavity which is closed at one end by the sighting plate.
Claim 10
Dependent Claim
43 words
The arrangement set forth in claim 8 wherein the sighting plate is mounted on the inner side of the rear end of said casing, a closure screw, which can be screwed out, being provided behind the sighting plate to close the viewing aperture.
Claim 11
Dependent Claim
16 words
The arrangement set forth in claim 1 wherein the reflector is made of retro reflective material.
Claim 12
Dependent Claim
16 words
An arrangement as claimed in claim 10 wherein the reflector element is made of triple mirrors.
Claim 13
Dependent Claim
23 words
The arrangement set forth in claim 8 wherein the angle between the reflector element and its incident light beam differs slightly from 90*.
Claim 14
Dependent Claim
35 words
The arrangement set forth in claim 8 wherein a scavenging air space is provided in a portion of the casing which extends in front of the reflector element, between said element and the light transmitter.
Claim 15
Dependent Claim
29 words
The arrangement set forth in claim 8 wherein an annular base projecting inwardly from the rear wall of the casing is provided on which is mounted the reflector element.
Claim 16
Dependent Claim
29 words
The arrangement set forth in claim 1 wherein the distance between the sighting plate and the reflector element is so selected that an angular resolution of 1* is obtainable.
Claim 17
Dependent Claim
26 words
The arrangement set forth in claim 8 wherein a protective glass is provided in front of the reflector element between the element and the light transmitter.
Claim 18
Dependent Claim
112 words
An optical device comprising a. a casing which contains a light transmitter, a light receiver and a reflector arrangement for reflecting the light from the transmitter onto the receiver. b. means mounting said reflector arrangement to said casing c. means for moving said reflector arrangement about at least two axes substantially perpendicular to the direction of the transmitted light beam and wherein said reflector arrangement comprises a reflector having an aperture, and a sighting plate at a spaced distance relative to the reflector, light from the light transmitter passing through said aperture and being received on the sighting plate, and wherein light reflected by the reflector is thrown onto the light receiver.
Claim 19
Dependent Claim
112 words
An optical device comprising a. a casing which contains a light transmitter, a light receiver and a reflector arrangement for reflecting the light from the transmitter onto the receiver. b. means mounting said reflector arrangement to said casing c. means for moving said reflector arrangement about at least two axes substantially perpendicular to the direction of the transmitted light beam and wherein said reflector arrangement comprises a reflector having an aperture, and a sighting plate at a spaced distance relative to the reflector, light from the light transmitter passing through said aperture and being received on the sighting plate, and wherein light reflected by the reflector is thrown onto the light receiver.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |