Patent ID: 6402332
Filing Date: 2002-06-11
Classification: G02B

Abstract:
A mirror support structure comprising:a first mirror and a second mirror disposed a predetermined distance apart from each other in a face-to-face relation; a first mirror support member and a second mirror support member supporting said first mirror and said second mirror, respectively; a plurality of main rods connecting said first mirror support member and said second mirror support member with each other; a plurality of auxiliary rods joined at one ends thereof to said first mirror support member or said second mirror support member and at the other ends thereof to a single connection point; a plurality of support legs for indirectly supporting said first and second mirrors at a total of three points including two points on said first mirror support member and said single connection point at which said auxiliary rods are joined together; and a base on which said support legs are fixedly mounted; wherein said support legs are composed of follower members capable of following an expansion or contraction of said base.