Abstract

Measurement of the refractive index of a simple negative lens is presented. The technique is also useful for measuring the refractive index of a simple convex and zero power lens.

© 1990 Optical Society of America

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References

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  1. C. R. Munnerlyn, “The Design and Application of a Surface-Measuring Interferometer,” Opt. Eng. 11, 38–43 (1972).
    [CrossRef]
  2. R. S. Kasana, K. J. Rosenbruch, “Determination of the Refractive Index of a Lens Using the Murty Shearing Interferometer,” Appl. Opt. 22, 3526–3531 (1983).
    [CrossRef] [PubMed]
  3. M. V. R. K. Murty, “The Use of a Single Plane Parallel Plate as a Lateral Shearing Interferometer with a Visible Gas Laser,” Appl. Opt. 3, 531–534 (1964).
    [CrossRef]

1983 (1)

1972 (1)

C. R. Munnerlyn, “The Design and Application of a Surface-Measuring Interferometer,” Opt. Eng. 11, 38–43 (1972).
[CrossRef]

1964 (1)

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of a wedged plate interferometer for measuring the refractive index of a lens. In this case, the concave surface is facing toward the focusing lens.

Fig. 2
Fig. 2

Schematic diagram of a wedged plate interferometer for measuring the refractive index of a lens. In this case, the convex surface is facing toward the focusing lens.

Fig. 3
Fig. 3

Photograph of horizontal straight fringes obtained for a well collimated beam.

Equations (6)

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n = t ( R + t a ) t a ( R + t ) .
n = t ( R - t a ) t a ( R - t ) .
n = t / t a .
d n = ± { | ( n - 1 ) t R ( R + t ) d R | + | n R t ( R + t ) d t | + | - [ n ( R + t ) - t ] 2 t R ( R + t ) d t a | } .
d n = ± { | - ( n - 1 ) t R ( R - t ) d R | + | n R t ( R - t ) d t | + | - [ n ( R - t ) + t ] 2 t R ( R - t ) d t a | } .
1 f = ( n - 1 ) [ 1 R 1 - 1 R 2 + t ( n - 1 ) n R 1 R 2 ] ,

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