Abstract

Results achieved in high-precision molding of glass lenses are reported. The work concentrated on a 0.4-N.A. 8-mm diam lens with spherical surfaces. The glass is a specialty glass composition of index (d-line) 1.604 and Abbe number 50. Typical design tolerances which have been achieved in the molded glass lenses include relative surface figure replication of 0.06 μm, thickness and diameter tolerances of ±10 μm, wedge of <10−3 rad, birefringence of less than one one-hundredth wave, and index homogeneity in the sixth decimal place. These results are directly applicable to molding precision glass aspheric lenses of similar tolerances.

© 1983 Optical Society of America

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References

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  1. J. H. Webb, U.S. Patent2,410,616 (1946).
  2. M. A. Angle, G. E. Blair, C. C. Maier, U.S. Patent3,833,347 (1974).
  3. M. A. Angle, G. L. Bender, G. E. Blair, C. C. Maier, U.S. Patent3,844,755 (1974).
  4. W. F. Parsons, G. E. Blair, C. C. Maier, U.S. Patent3,900,328 (1975).
  5. G. E. Blair, J. H. Shafer, J. J. Meyers, F. T. J. Smith, U.S. Patent4,139,677 (1979).
  6. G. E. Blair, U.S. Patent4,168,961.
  7. C. K. Wu, U.S. Patent4,073,654 (1978).
  8. H. J. M. Joormann, H. Verweii, J. Haisma, European Patent19,342 (1980).
  9. M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
    [CrossRef]
  10. R. R. Turk, Proc. Soc. Photo-Opt. Instrum. Eng. 297, 204 (1981).
  11. C. A. Faick, B. Fonoroff, J. Res. Natl. Bur. Stand. 32, 67 (1944).
    [CrossRef]

1981

R. R. Turk, Proc. Soc. Photo-Opt. Instrum. Eng. 297, 204 (1981).

1980

M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
[CrossRef]

1944

C. A. Faick, B. Fonoroff, J. Res. Natl. Bur. Stand. 32, 67 (1944).
[CrossRef]

Angle, M. A.

M. A. Angle, G. L. Bender, G. E. Blair, C. C. Maier, U.S. Patent3,844,755 (1974).

M. A. Angle, G. E. Blair, C. C. Maier, U.S. Patent3,833,347 (1974).

Bender, G. L.

M. A. Angle, G. L. Bender, G. E. Blair, C. C. Maier, U.S. Patent3,844,755 (1974).

Blair, G. E.

M. A. Angle, G. L. Bender, G. E. Blair, C. C. Maier, U.S. Patent3,844,755 (1974).

G. E. Blair, U.S. Patent4,168,961.

M. A. Angle, G. E. Blair, C. C. Maier, U.S. Patent3,833,347 (1974).

W. F. Parsons, G. E. Blair, C. C. Maier, U.S. Patent3,900,328 (1975).

G. E. Blair, J. H. Shafer, J. J. Meyers, F. T. J. Smith, U.S. Patent4,139,677 (1979).

Braunstein, M.

M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
[CrossRef]

Braunstein, R.

M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
[CrossRef]

Devor, D. P.

M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
[CrossRef]

Faick, C. A.

C. A. Faick, B. Fonoroff, J. Res. Natl. Bur. Stand. 32, 67 (1944).
[CrossRef]

Fonoroff, B.

C. A. Faick, B. Fonoroff, J. Res. Natl. Bur. Stand. 32, 67 (1944).
[CrossRef]

Haisma, J.

H. J. M. Joormann, H. Verweii, J. Haisma, European Patent19,342 (1980).

Joormann, H. J. M.

H. J. M. Joormann, H. Verweii, J. Haisma, European Patent19,342 (1980).

Maier, C. C.

W. F. Parsons, G. E. Blair, C. C. Maier, U.S. Patent3,900,328 (1975).

M. A. Angle, G. E. Blair, C. C. Maier, U.S. Patent3,833,347 (1974).

M. A. Angle, G. L. Bender, G. E. Blair, C. C. Maier, U.S. Patent3,844,755 (1974).

Meyers, J. J.

G. E. Blair, J. H. Shafer, J. J. Meyers, F. T. J. Smith, U.S. Patent4,139,677 (1979).

Parsons, W. F.

W. F. Parsons, G. E. Blair, C. C. Maier, U.S. Patent3,900,328 (1975).

Pastor, R. C.

M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
[CrossRef]

Robinson, M.

M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
[CrossRef]

Shafer, J. H.

G. E. Blair, J. H. Shafer, J. J. Meyers, F. T. J. Smith, U.S. Patent4,139,677 (1979).

Smith, F. T. J.

G. E. Blair, J. H. Shafer, J. J. Meyers, F. T. J. Smith, U.S. Patent4,139,677 (1979).

Turk, R. R.

R. R. Turk, Proc. Soc. Photo-Opt. Instrum. Eng. 297, 204 (1981).

M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
[CrossRef]

Verweii, H.

H. J. M. Joormann, H. Verweii, J. Haisma, European Patent19,342 (1980).

Webb, J. H.

J. H. Webb, U.S. Patent2,410,616 (1946).

Wu, C. K.

C. K. Wu, U.S. Patent4,073,654 (1978).

J. Res. Natl. Bur. Stand.

C. A. Faick, B. Fonoroff, J. Res. Natl. Bur. Stand. 32, 67 (1944).
[CrossRef]

Mater. Res. Bull.

M. Robinson, R. C. Pastor, R. R. Turk, D. P. Devor, M. Braunstein, R. Braunstein, Mater. Res. Bull. 15, 735 (1980).
[CrossRef]

Proc. Soc. Photo-Opt. Instrum. Eng.

R. R. Turk, Proc. Soc. Photo-Opt. Instrum. Eng. 297, 204 (1981).

Other

J. H. Webb, U.S. Patent2,410,616 (1946).

M. A. Angle, G. E. Blair, C. C. Maier, U.S. Patent3,833,347 (1974).

M. A. Angle, G. L. Bender, G. E. Blair, C. C. Maier, U.S. Patent3,844,755 (1974).

W. F. Parsons, G. E. Blair, C. C. Maier, U.S. Patent3,900,328 (1975).

G. E. Blair, J. H. Shafer, J. J. Meyers, F. T. J. Smith, U.S. Patent4,139,677 (1979).

G. E. Blair, U.S. Patent4,168,961.

C. K. Wu, U.S. Patent4,073,654 (1978).

H. J. M. Joormann, H. Verweii, J. Haisma, European Patent19,342 (1980).

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Figures (3)

Fig. 1
Fig. 1

Schematic of molded lens shown in cross section.

Fig. 2
Fig. 2

Fizeau interferograms of the f/0.8 surface of a mold (a) and typical lens (b) from that mold. Interferograms are double pass at 0.6328 μm.

Fig. 3
Fig. 3

Difference between mold and lens OPD maps. Results are reported double pass at 0.6328 μm.

Tables (1)

Tables Icon

Table I Lens Design Parameters, how They are Measured, and Corresponding Moldinq Tolerance

Metrics