Alignment of large aperture optical systems using a bi-directional telescope and a variable offset periscope
Abstract
Two instruments have been developed, the Bi-Directional Telescope (BDT) and the Variable Offset Periscope, that will aid the alignment of large aperture, long pathlength optical systems. The BDT has been designed to view two ends of a complex long pathlength optical system along a common optical axis. The BDT provides a beam whose maximum offset between beams approaches .001: and maximum angular misalignment approaches 6.0 microradians. The other instrument, the Variable Offset Periscope, has been developed to align multiple mirror or annular optical systems to a common axis, where the optical axis is obscured. The periscope is capable of offsetting a beam over most of a 23.0: diameter aperture with an angular error of less than 2.0 microradians between input and output beams.
- Publication:
-
Optical alignment
- Pub Date:
- January 1980
- DOI:
- 10.1117/12.959450
- Bibcode:
- 1980SPIE..251...51C
- Keywords:
-
- Alignment;
- Design Analysis;
- Optical Equipment;
- Periscopes;
- Telescopes;
- Apertures;
- Light Beams;
- Mirrors;
- Optical Paths;
- Optics