Gregorian all-reflective optical system

Details Gregorian all-reflective optical system Gregorian all-reflective optical system

1976-04-28

1977-05-24

Murray, Richard

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

H04B 900

Patent

active

040257835

ABSTRACT:
An optical heterodyne receiver comprises a system of reflectors forming a folded Gregorian configuration for collecting a signal beam, and an optical detector located at the focus of the system. The reflectors comprise a paraboloidal primary reflector and an ellipsoidal secondary reflector facing each other on an optical axis with the focus of the secondary reflector coinciding with the focus of the primary reflector. An auxiliary laser generates a local oscillator beam that is combined with the signal beam after the signal beam emerges from the exit pupil (which is also the aperture stop) of the system, and the resultant is impinged on the detector. A pair of image motion compensators is located as close to the exit pupil as possible for aligning off-axis inputs to the detector. The compensators also ensure that off-axis as well as on-axis inputs are substantially coaxial with the local oscillator beam, thereby maximizing signal detector efficiency. By utilizing a large f
umber for the local oscillator beam, it effectively eliminates the need for critical alignment between the signal and the local oscillator beams at the detector.

REFERENCES:
patent: 3509347 (1970-04-01), Lang et al.
patent: 3828185 (1974-08-01), Vandling

Affiliated with

Also associated with

Rating

Gregorian all-reflective optical system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gregorian all-reflective optical system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gregorian all-reflective optical system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-539175