Constant-deviation reflector
First Claim
1. A constant-deviation reflector device comprising a first discrete reflective element in the form of at least one roof prism and at least one second discrete reflective element providing at least one reflection, said first and said second reflective elements being mutually adjustable by rotation about at least a first axis to set an angle between an incident and an exiting beam, wherein in at least one plane said angle is substantially unaffected by changes in the direction of the incident beam.
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Accused Products
Abstract
A constant-deviation device is disclosed which comprises a first reflective element in the form of one or more roof prisms and one or more second reflective elements providing one or more reflections. The first and the second reflective elements are mutually adjustable by rotation about one or more axes thereby to set an angle between the incident and the exiting beam. In one or more planes the angle is substantially unaffected by changes in the direction of incidence of the incident beam.
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Citations
14 Claims
- 1. A constant-deviation reflector device comprising a first discrete reflective element in the form of at least one roof prism and at least one second discrete reflective element providing at least one reflection, said first and said second reflective elements being mutually adjustable by rotation about at least a first axis to set an angle between an incident and an exiting beam, wherein in at least one plane said angle is substantially unaffected by changes in the direction of the incident beam.
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9. A method of constructing a constant-deviation reflective device comprising the steps of:
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providing a first discrete reflective element in the form of at least one roof prism and at least one second discrete reflective element providing at least one reflection, adjusting the spatial relationship of said first and said second reflective elements by rotation of at least one of the first and second reflective elements about at least a first axis; and fixing the spatial relationship of said first and said second reflective elements. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification