Abstract

A new approach to laser beam scanning is introduced which is sufficiently general to be applied to a wide variety of techniques. Periodic scan enhancement is described as a method of taking advantage of iteration or summation of contributions from individual scanning sections without imposing the progressive increase in aperture size. Vignetting at the scanning aperture is avoided, permitting employment of a multiplicity of elements whose sizes are diffraction limited. This is achieved by the interposition of alternate lenticular elements which reimage the aperture of one scanning element upon the aperture of the next. Thus, the responsibility of increased aperture size as scan progresses is transferred from the (dynamic) scanning element itself to the (static) transfer optics. Several examples illustrate application of this technique. Over-all optics is considered to approach diffraction-limited performance with minimum loss

© 1968 Optical Society of America

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References

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  1. F. Skaupy, “Apparatus for Refracting Light Rays,” U. S. Pat., 1,923,891 (22August1933).
  2. L. W. Procopio, F. A. Jesson, P. M. Navel, L. J. Brown, “Coherent Optical Beam Steering Techniques,” RADC–TDR–63–450, Vol. II, p. 162, January1964.
  3. V. J. Fowler, J. Schlafer, Appl. Opt. 5, 1676 (1966).
    [CrossRef]
  4. H. R. Senf, J. Soc. Motion Pict. Television Eng. 76, 4 (1967).
  5. W. P. Brown, J. E. Kiefer, J. F. Lotspeich, H. R. Senf, “An Electro-Optic Light Beam Deflector,” presented at the International Electron Devices Meeting (Washington, D. C., October 1966);see also J. E. Kiefer, J. F. Lotspeich, W. P. Brown, H. R. Senf, IEEE J. Quantum Electron. QE-3, 261A (1967).
    [CrossRef]
  6. L. Beiser, Soc. Photo. Sci. Eng. News, 10, No. 5, 18 (1967).
  7. L. Beiser, J. Opt. Soc. Amer. 57, 923 (1967); see also L. Beiser, IEEE J. Quantum Electron. QE-3, 560 (1967).
    [CrossRef]

1967 (3)

H. R. Senf, J. Soc. Motion Pict. Television Eng. 76, 4 (1967).

L. Beiser, Soc. Photo. Sci. Eng. News, 10, No. 5, 18 (1967).

L. Beiser, J. Opt. Soc. Amer. 57, 923 (1967); see also L. Beiser, IEEE J. Quantum Electron. QE-3, 560 (1967).
[CrossRef]

1966 (1)

V. J. Fowler, J. Schlafer, Appl. Opt. 5, 1676 (1966).
[CrossRef]

Beiser, L.

L. Beiser, Soc. Photo. Sci. Eng. News, 10, No. 5, 18 (1967).

L. Beiser, J. Opt. Soc. Amer. 57, 923 (1967); see also L. Beiser, IEEE J. Quantum Electron. QE-3, 560 (1967).
[CrossRef]

Brown, L. J.

L. W. Procopio, F. A. Jesson, P. M. Navel, L. J. Brown, “Coherent Optical Beam Steering Techniques,” RADC–TDR–63–450, Vol. II, p. 162, January1964.

Brown, W. P.

W. P. Brown, J. E. Kiefer, J. F. Lotspeich, H. R. Senf, “An Electro-Optic Light Beam Deflector,” presented at the International Electron Devices Meeting (Washington, D. C., October 1966);see also J. E. Kiefer, J. F. Lotspeich, W. P. Brown, H. R. Senf, IEEE J. Quantum Electron. QE-3, 261A (1967).
[CrossRef]

Fowler, V. J.

V. J. Fowler, J. Schlafer, Appl. Opt. 5, 1676 (1966).
[CrossRef]

Jesson, F. A.

L. W. Procopio, F. A. Jesson, P. M. Navel, L. J. Brown, “Coherent Optical Beam Steering Techniques,” RADC–TDR–63–450, Vol. II, p. 162, January1964.

Kiefer, J. E.

W. P. Brown, J. E. Kiefer, J. F. Lotspeich, H. R. Senf, “An Electro-Optic Light Beam Deflector,” presented at the International Electron Devices Meeting (Washington, D. C., October 1966);see also J. E. Kiefer, J. F. Lotspeich, W. P. Brown, H. R. Senf, IEEE J. Quantum Electron. QE-3, 261A (1967).
[CrossRef]

Lotspeich, J. F.

W. P. Brown, J. E. Kiefer, J. F. Lotspeich, H. R. Senf, “An Electro-Optic Light Beam Deflector,” presented at the International Electron Devices Meeting (Washington, D. C., October 1966);see also J. E. Kiefer, J. F. Lotspeich, W. P. Brown, H. R. Senf, IEEE J. Quantum Electron. QE-3, 261A (1967).
[CrossRef]

Navel, P. M.

L. W. Procopio, F. A. Jesson, P. M. Navel, L. J. Brown, “Coherent Optical Beam Steering Techniques,” RADC–TDR–63–450, Vol. II, p. 162, January1964.

Procopio, L. W.

L. W. Procopio, F. A. Jesson, P. M. Navel, L. J. Brown, “Coherent Optical Beam Steering Techniques,” RADC–TDR–63–450, Vol. II, p. 162, January1964.

Schlafer, J.

V. J. Fowler, J. Schlafer, Appl. Opt. 5, 1676 (1966).
[CrossRef]

Senf, H. R.

H. R. Senf, J. Soc. Motion Pict. Television Eng. 76, 4 (1967).

W. P. Brown, J. E. Kiefer, J. F. Lotspeich, H. R. Senf, “An Electro-Optic Light Beam Deflector,” presented at the International Electron Devices Meeting (Washington, D. C., October 1966);see also J. E. Kiefer, J. F. Lotspeich, W. P. Brown, H. R. Senf, IEEE J. Quantum Electron. QE-3, 261A (1967).
[CrossRef]

Skaupy, F.

F. Skaupy, “Apparatus for Refracting Light Rays,” U. S. Pat., 1,923,891 (22August1933).

Appl. Opt. (1)

V. J. Fowler, J. Schlafer, Appl. Opt. 5, 1676 (1966).
[CrossRef]

J. Opt. Soc. Amer. (1)

L. Beiser, J. Opt. Soc. Amer. 57, 923 (1967); see also L. Beiser, IEEE J. Quantum Electron. QE-3, 560 (1967).
[CrossRef]

J. Soc. Motion Pict. Television Eng. (1)

H. R. Senf, J. Soc. Motion Pict. Television Eng. 76, 4 (1967).

Soc. Photo. Sci. Eng. News (1)

L. Beiser, Soc. Photo. Sci. Eng. News, 10, No. 5, 18 (1967).

Other (3)

W. P. Brown, J. E. Kiefer, J. F. Lotspeich, H. R. Senf, “An Electro-Optic Light Beam Deflector,” presented at the International Electron Devices Meeting (Washington, D. C., October 1966);see also J. E. Kiefer, J. F. Lotspeich, W. P. Brown, H. R. Senf, IEEE J. Quantum Electron. QE-3, 261A (1967).
[CrossRef]

F. Skaupy, “Apparatus for Refracting Light Rays,” U. S. Pat., 1,923,891 (22August1933).

L. W. Procopio, F. A. Jesson, P. M. Navel, L. J. Brown, “Coherent Optical Beam Steering Techniques,” RADC–TDR–63–450, Vol. II, p. 162, January1964.

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Figures (6)

Fig. 1
Fig. 1

Optical schematic of 1:1 imaging and recollimation system.

Fig. 2
Fig. 2

Ray trace (undeflected) for periodic scan enhancement. S = scanner, L = transfer lens, d = aperture, D = lens aperture, f = transfer lens focal length, and ff final lens focal length.

Fig. 3
Fig. 3

Ray trace (deflected) for periodic scan enhancement.

Fig. 4
Fig. 4

Recycled periodic scan enhancement illustrating three traversals of the ray group.

Fig. 5
Fig. 5

Optical schematic—periodic mirror scan enhancement. (a) Refractive transfer optics and (b) reflective transfer optics.

Fig. 6
Fig. 6

Periodic gradient deflection with reflective transfer optics.

Equations (6)

Equations on this page are rendered with MathJax. Learn more.

v n = f [ ( 2 n - 1 ) / n ] ;
u n = f [ ( 2 n - 1 ) / ( n - 1 ) ] ;
D n = d ( 2 n - 1 ) ;
f f = f [ 1 / ( n - 1 ) ] ,
D t = D n + f α n ,
F = v n / D n = f / n d [ per Eqs . ( 1 ) and ( 3 ) ] .

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