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

Focal length measurement of a microlens-array by grating shearing interferometry

Not Accessible

Your library or personal account may give you access

Abstract

Based on grating shearing interferometry, a simple technique is introduced for focal length measurements of a microlens-array (MLA). The measurement system is composed of a He–Ne laser, condenser, collimator, the MLA under testing, a Ronchi grating, and CCD sensor. The plane wavefront from the collimator is transformed to a spherical wavefront by the MLA, while the curvature center is at the focus. Interference stripes appear at the overlap between the zero-order and first-order diffractive patterns of the grating and are detected by the CCD sensor. By analyzing the period change of stripes, the focal length is determined after the defocus of the grating is calculated. To validate the feasibility, an experiment is performed. The measurement uncertainty is discussed and measurement accuracy was determined to be 2%.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Measuring the focal length of optical systems by grating shearing interferometry

F. Lei and L. K. Dang
Appl. Opt. 33(28) 6603-6608 (1994)

Focal-length measurement by multiple-beam shearing interferometry

Kiyofumi Matsuda, Thomas H. Barnes, Bob F. Oreb, and Colin J. R. Sheppard
Appl. Opt. 38(16) 3542-3548 (1999)

Interferometric focal length measurement of positive and negative lenses using a lateral-shearing cyclic path optical configuration setup and polarization phase-shifting interferometry

Y. Pavan Kumar, Sarvendra Singh Negi, M. Pandurang Kamath, Sanjib Chatterjee, S. D. Sharma, and A. S. Joshi
Appl. Opt. 56(30) 8414-8419 (2017)

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 (9)

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

Tables (5)

You do not have subscription access to this journal. Article tables 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

Equations (15)

You do not have subscription access to this journal. Equations 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