Abstract

A conventional biocular has been designed to magnify the image obtained in a cathode ray tube display. Problems of weight and alignment were solved by using four lenses of which one is an axial gradient lens. This lens reduces distortion, field curvature, and angular blur.

© 1985 Optical Society of America

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References

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  1. L. Montagnino, “Ray Tracing in Inhomogeneous Media,” J. Opt. Soc. Am. 58, 1667 (1968).
    [CrossRef]
  2. A. Sharma, D. V. Kumar, A. K. Ghatak, “Tracing Rays Through Graded-Index Media: A New Method,” Appl. Opt. 21, 984 (1982).
    [CrossRef] [PubMed]
  3. D. T. Moore, “Gradient-Index Optics: a Review,” Appl. Opt. 19, 1035 (1980).
    [CrossRef] [PubMed]
  4. G. Katalan, MOD, Haifa; private communication.
  5. J. L. Coutaz, P. C. Jaussaud, “High Index Gradient in Glass by Ion Exchange,” Appl. Opt. 21, 1063 (1982).
    [CrossRef] [PubMed]

1982 (2)

1980 (1)

1968 (1)

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Figures (2)

Fig. 1
Fig. 1

Homogeneous.

Tables (9)

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Table I Angular Blur Millirads

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Table II Parallax as a Function of the Object Position

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Table III Distortion (%) for Different Positions of the Eyes and Object

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Table IV Field Curvature (Dioptries)

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Table V Biocular Parameters

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Table VI Effect of Displacement of the Gradient on Parallax (mrad)

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Table VII Effect of Displacement of the Gradient on Distortion and Angular Blur

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Table VIII Effect of Tilt of the Gradient on Parallax, Distortion and Angular Blur

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Table IX Effect of Variation of N1, on Parallax, Distortion, and Angular Blur

Equations (3)

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

d d l ( n d r ) d l = grad n ,
angular blur = minimum spot radius ( μ m ) best position ( mm ) .
O 1 O 1 O 7 O 7 FC ( diopters ) = ( 1 B P o 1 1 B P o 7 ) × 1000 .

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