Claims
- 1. A device for scanning or deflecting a beam of radiation comprising a first rotatable body having at least one reflective surface on which the beam is initially incident and by which the beam of radiation is initially reflected; a static optical system disposed to receive the beam of radiation initially reflected from said first rotatable body and to reflect said beam therefrom; and a second rotatable body having at least one reflective surface on which said beam reflected from said optical system is incident, and thereby, reflected, in which the second said rotatable body is a mirror drum of regular polygonal cross-section, having a plurality of mirror face facets, and is rotatable about its axis, and in which the first said rotatable body is a mirror drum of regular shape, having a plurality of curved convex mirror facets, and is rotatable about its axis.
- 2. A device as claimed in claim 1, wherein said beam of radiation is initially convergent to reach a focus substantially at said reflective surface of said first rotatable body.
- 3. A device as claimed in claim 1, in which the first and second rotatable bodies each have the same number of mirror face facets and are fixed together and rotatable about the same axis.
- 4. A device as claimed in claim 1, wherein said static optical system for relaying the said beam from the first rotatable body to the second rotatable body is a concave mirror.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3429/72 |
Jan 1972 |
UK |
|
Parent Case Info
This is a division of application Ser. No. 310,532, filed Nov. 29, 1972, now abandoned.
US Referenced Citations (2)
Foreign Referenced Citations (1)
Number |
Date |
Country |
487,318 |
Jun 1938 |
UK |
Divisions (1)
|
Number |
Date |
Country |
Parent |
310532 |
Nov 1972 |
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