The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 1991
Filed:
Oct. 20, 1988
James W Bergstrom, New Brighton, MN (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
In the present invention, a prismatic structure receives the small portions of the counter-propagating waves which are transmitted through a partially transmitting mirror at one of the corners of the gyro. Exiting from the prismatic structure is a light beam which is redirected by a concave mirror which serves to cause the light beam to travel along a first light path and also cause the impinging light beams to be focused at a selected point at which the beam size thereat is less than the original beam size impinging upon the concave mirror. Further, the concave mirror is positioned such that the light path reflected from the concave mirror passes through the prismatic structure so as to minimize the readout assembly bulk optic size, thus being more compact.