Browse Prior Art Database

Optical Test and Alignment System

IP.com Disclosure Number: IPCOM000094214D
Original Publication Date: 1966-Jul-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Kern, RW: AUTHOR

Abstract

This system tests and aligns optical axes such as, for example, optical axes 10 and 11 of navigation telescope 12 and a computer driven scanning device such as the pair of scanning mirrors 13 and 14 as in drawing A. Telescope 12 is rigidly mounted on the inner surface of space vehicle wall 15 by cylindrical mounting flange 16. Its line of sight or axis 10 is positioned to pass through window 17 and impinges on the reflective surface of mirror 13 thence onto the reflective surface of mirror 14. A servo system, not shown, selectively drives mirrors 13 and 14 for rotation about their respective tilt axes in two perpendicular directions. Such is indicated by arrows 18a and 18b. In addition, the servo system drives mirror 14 in revolution about mirror 13 indicated by arrow 19.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 2

Optical Test and Alignment System

This system tests and aligns optical axes such as, for example, optical axes 10 and 11 of navigation telescope 12 and a computer driven scanning device such as the pair of scanning mirrors 13 and 14 as in drawing A. Telescope 12 is rigidly mounted on the inner surface of space vehicle wall 15 by cylindrical mounting flange 16. Its line of sight or axis 10 is positioned to pass through window 17 and impinges on the reflective surface of mirror 13 thence onto the reflective surface of mirror 14. A servo system, not shown, selectively drives mirrors 13 and 14 for rotation about their respective tilt axes in two perpendicular directions. Such is indicated by arrows 18a and 18b. In addition, the servo system drives mirror 14 in revolution about mirror 13 indicated by arrow 19. By mounting the scanning device externally, a relatively large viewing area is available for telescope 12. The latter is fixed within the vehicle to conserve space.

To align telescope 12 and mirrors 13 and 14, a set of reference mirrors 20 is mounted at various positions. Each mirror 20 is in a predetermined optical alignment and orientation with the telescope scanning device system. Mirrors 20 are fixed on the inner surface of an ejectable transparent dome 21. This is mounted externally on wall 15 by flange 22. Dome 21 also serves as a protective cover during launching operations.

In order to calibrate the system, reticle 23 is illuminated by lamp 24 and projected onto the reflective surface of half-mirror 25. The latter is rigidly mounted in telescope 12 and so positioned that the image of reticle 23 is reflectively transmitted along optical axes 10 and 11 and then onto one mirror 20 at each of the mentione...