Accession Number:

ADD014033

Title:

Real Time Autocollimator Device for Aligning Two Surfaces in Parallel.

Descriptive Note:

Patent, Filed 26 May 87, patented 27 Sep 88,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

• Malin, Mark

Report Date:

1988-09-27

Pagination or Media Count:

5.0

Abstract:

This patent discloses a real time autocollimator for measuring parallelism of two surfaces. The autocollimator uses a laser to provide light to first and second beam splitters. A second beam splitter directs dissimilarly polarized light to each surface. This light is reflected to, then recombined by the second beam splitter prior to being redivided by a third beam splitter for comparison at quadrant detectors. Patents. EDC

Descriptors:

• *COLLIMATORS
• *PATENTS
• ALIGNMENT
• BEAM SPLITTING
• COMPARISON
• DETECTORS
• LASER APPLICATIONS
• LIGHT
• MEASUREMENT
• PARALLEL ORIENTATION
• POLARIZATION
• QUADRANTS
• REAL TIME
• SURFACES

Subject Categories:

• Optics
• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE