Abstract

A simple, compact and inexpensive optical system is described which allows the dihedral angle of a roof-top mirror to be measured accurately. The system fits on a desktop and can be used to set and monitor the dihedral angle of the mirror. The ability to make adjustments while monitoring the angle is particularly useful when epoxy is used to secure the two plane mirrors that form the roof-top, since epoxy will tend to shrink as it cures.

© 2000 Optical Society of America

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References

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  1. D. H. Martin, E. Puplett, Infrared Phys., 10, 105-9 (1970).
    [Crossref]
  2. D. H. Martin, in Infrared and Millimeter Waves, 6, Academic Press, New York, Ed. K. J. Button, p. 65-148 (1982)
  3. S. Paine, R. Blundell, D. Cosmo Papa, J. W. Barrett, J. E. Radford, P. A. S. P., 112, 108-18 (2000).
    [Crossref]
  4. D. A. Naylor, G. R. Davis, B. G. Gom, T. A. Clark, M. J. Griffin, Monthly Notices of the Royal Astronomical Society, 315, 622-8 (2000).
    [Crossref]
  5. M. Born, E. Wolf, Principles of Optics, Fifth edition, Pergamon, New York, p. 300-2 (1975).
  6. D. K. Lambert, P. L. Richards, App. Opt., 17, 1595-1602 (1978).
    [Crossref]
  7. Lumicon, 2111 Research Drive, Suite 4-5, Livermore, California, 94550.
  8. Chicago Miniature Lamp, Inc., 147 Central Avenue, Hackensack, NJ 07601.

2000 (2)

S. Paine, R. Blundell, D. Cosmo Papa, J. W. Barrett, J. E. Radford, P. A. S. P., 112, 108-18 (2000).
[Crossref]

D. A. Naylor, G. R. Davis, B. G. Gom, T. A. Clark, M. J. Griffin, Monthly Notices of the Royal Astronomical Society, 315, 622-8 (2000).
[Crossref]

1978 (1)

D. K. Lambert, P. L. Richards, App. Opt., 17, 1595-1602 (1978).
[Crossref]

1970 (1)

D. H. Martin, E. Puplett, Infrared Phys., 10, 105-9 (1970).
[Crossref]

Barrett, J. W.

S. Paine, R. Blundell, D. Cosmo Papa, J. W. Barrett, J. E. Radford, P. A. S. P., 112, 108-18 (2000).
[Crossref]

Blundell, R.

S. Paine, R. Blundell, D. Cosmo Papa, J. W. Barrett, J. E. Radford, P. A. S. P., 112, 108-18 (2000).
[Crossref]

Born, M.

M. Born, E. Wolf, Principles of Optics, Fifth edition, Pergamon, New York, p. 300-2 (1975).

Clark, T. A.

D. A. Naylor, G. R. Davis, B. G. Gom, T. A. Clark, M. J. Griffin, Monthly Notices of the Royal Astronomical Society, 315, 622-8 (2000).
[Crossref]

Cosmo Papa, D.

S. Paine, R. Blundell, D. Cosmo Papa, J. W. Barrett, J. E. Radford, P. A. S. P., 112, 108-18 (2000).
[Crossref]

Davis, G. R.

D. A. Naylor, G. R. Davis, B. G. Gom, T. A. Clark, M. J. Griffin, Monthly Notices of the Royal Astronomical Society, 315, 622-8 (2000).
[Crossref]

Gom, B. G.

D. A. Naylor, G. R. Davis, B. G. Gom, T. A. Clark, M. J. Griffin, Monthly Notices of the Royal Astronomical Society, 315, 622-8 (2000).
[Crossref]

Griffin, M. J.

D. A. Naylor, G. R. Davis, B. G. Gom, T. A. Clark, M. J. Griffin, Monthly Notices of the Royal Astronomical Society, 315, 622-8 (2000).
[Crossref]

Lambert, D. K.

D. K. Lambert, P. L. Richards, App. Opt., 17, 1595-1602 (1978).
[Crossref]

Martin, D. H.

D. H. Martin, E. Puplett, Infrared Phys., 10, 105-9 (1970).
[Crossref]

D. H. Martin, in Infrared and Millimeter Waves, 6, Academic Press, New York, Ed. K. J. Button, p. 65-148 (1982)

Naylor, D. A.

D. A. Naylor, G. R. Davis, B. G. Gom, T. A. Clark, M. J. Griffin, Monthly Notices of the Royal Astronomical Society, 315, 622-8 (2000).
[Crossref]

Paine, S.

S. Paine, R. Blundell, D. Cosmo Papa, J. W. Barrett, J. E. Radford, P. A. S. P., 112, 108-18 (2000).
[Crossref]

Puplett, E.

D. H. Martin, E. Puplett, Infrared Phys., 10, 105-9 (1970).
[Crossref]

Radford, J. E.

S. Paine, R. Blundell, D. Cosmo Papa, J. W. Barrett, J. E. Radford, P. A. S. P., 112, 108-18 (2000).
[Crossref]

Richards, P. L.

D. K. Lambert, P. L. Richards, App. Opt., 17, 1595-1602 (1978).
[Crossref]

Wolf, E.

M. Born, E. Wolf, Principles of Optics, Fifth edition, Pergamon, New York, p. 300-2 (1975).

App. Opt. (1)

D. K. Lambert, P. L. Richards, App. Opt., 17, 1595-1602 (1978).
[Crossref]

Infrared Phys. (1)

D. H. Martin, E. Puplett, Infrared Phys., 10, 105-9 (1970).
[Crossref]

Monthly Notices of the Royal Astronomical Society (1)

D. A. Naylor, G. R. Davis, B. G. Gom, T. A. Clark, M. J. Griffin, Monthly Notices of the Royal Astronomical Society, 315, 622-8 (2000).
[Crossref]

P. A. S. P. (1)

S. Paine, R. Blundell, D. Cosmo Papa, J. W. Barrett, J. E. Radford, P. A. S. P., 112, 108-18 (2000).
[Crossref]

Other (4)

Lumicon, 2111 Research Drive, Suite 4-5, Livermore, California, 94550.

Chicago Miniature Lamp, Inc., 147 Central Avenue, Hackensack, NJ 07601.

M. Born, E. Wolf, Principles of Optics, Fifth edition, Pergamon, New York, p. 300-2 (1975).

D. H. Martin, in Infrared and Millimeter Waves, 6, Academic Press, New York, Ed. K. J. Button, p. 65-148 (1982)

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Figures (3)

Figure 1
Figure 1

Diagram of the alignment telescope showing the path of two rays striking a roof-top mirror whose dihedral angle is less than 90°.

Figure 2
Figure 2

A diagram of an adjustable roof-top mirror assembly. The lower mirror is secured with epoxy, the upper mirror can be tilted by means of the differential screw to adjust the dihedral angle.

Figure 3
Figure 3

A diagram of the cross hair images (dashed lines) seen when the illuminated reticle (bold lines) is oriented at an arbitrary angle. A, with respect to the intersection line of the roof-top mirrors and the dihedral angle is not 90°.

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