Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

A Variable Refractive Null Lens

Not Accessible

Your library or personal account may give you access

Abstract

Null lenses, for use with rotationally symmetric but nonspherical surfaces, are extremely useful for testing during production. In general, each different system to be tested requires a different null lens. A variable null lens is proposed which consists of two aspheric plates, each of which introduces approximately fourth- or sixth-order spherical aberration. When the plates are inserted in a diverging beam, the effect on the wavefront may be changed by varying the plate spacing. The system may be used to test parabolas and other nonspherical mirrors at center of curvature, aspheric plates in conjunction with spherical mirrors, and various other systems. Once the two plates have been produced and measured, the spacing of the plates used may be determined for each test. This would normally be done by computer, using any of the optimization techniques for lens design. Examples are shown, and an estimate of obtainable accuracy is given.

© 1970 Optical Society of America

Full Article  |  PDF Article
More Like This
Comparison of lens and Fresnel null correctors

Aden B. Meinel and Marjorie P. Meinel
Appl. Opt. 40(22) 3688-3697 (2001)

Refractive null correctors for aspheric surfaces

Paul L. Ruben
Appl. Opt. 15(12) 3080-3083 (1976)

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 Optica member, or as an authorized user of your institution.

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

Figures (5)

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

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved