MAURICE H BEAULIEU
Broker in Methuen, MA

License number
Massachusetts 44407
Issued Date
May 1, 1983
Expiration Date
Mar 26, 1986
Type
Salesperson
Address
Address
Methuen, MA 01844
LicenseFiles verified this license of Nov 25, 2016 at the Mass.gov - Consumer Affairs and Business Regulation.

Professional information

Maurice Beaulieu Photo 1

Large Aperture Mirror Testing Apparatus And Method

US Patent:
5410407, Apr 25, 1995
Filed:
Apr 30, 1993
Appl. No.:
8/056283
Inventors:
Robert J. Zielinski - Carlisle MA
Maurice Beaulieu - Methuen MA
Assignee:
Litton Systems, Inc. - Lexington MA
International Classification:
G01B 902
US Classification:
356359
Abstract:
A combination of hindle shell and hindle sphere test bodies are employed to test optical surface quality or optical figure of a test optic having a convex hyperboloid reflective surface. A hindle sphere or array of hindle spheres is used to test an outer portion of the reflective surface. A subaperture hindle shell is used simultaneously with the hindle spheres to test the central portion of the reflective surface that is untested by the hindle spheres alone. The test optic may be coupled to a rotator to facilitate testing of the outer portion of the reflective surface where the hindle sphere is a segment of a full hindle sphere. A single hindle shell can test the reflective surface without the aid of a hindle sphere by employing a translator. The translator is used to decenter the test optic from the hindle shell. The translation results in non-null test results, which are analytically predictable and correctable by testing apparatus.

Broker licenses in Massachusetts