Abstract

The suitability of zinc sulfide versus germanium for the middle negative lens of the Cooke triplet is studied. For this purpose two designs based on the Cooke triplet configuration are developed with a focal length of 100 mm and a relative aperture of f/2 to cover a total field of 14 deg for use in the 3–5-μm region of the spectrum. For the outer positive lenses both designs use silicon. For the middle negative lens one design uses zinc sulfide and the other uses germanium. The performances of the two designs are compared. It is found that the design with the zinc sulfide negative lens performs better in monochromatic applications, and the design with a germanium negative lens performs better in polychromatic applications.

© 1992 Optical Society of America

Full Article  |  PDF Article
Related Articles
Design of a new five-element Cooke triplet derivative

K. D. Sharma
Appl. Opt. 18(23) 3933-3937 (1979)

Four-element lens systems of the Cooke Triplet family: designs

K. D. Sharma
Appl. Opt. 19(5) 698-701 (1980)

Utility of low-index high-dispersion glasses for Cooke triplet design

K. D. Sharma
Appl. Opt. 21(7) 1320-1322 (1982)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription