| 摘要 |
PCT No. PCT/GB97/00456 Sec. 371 Date Oct. 9, 1997 Sec. 102(e) Date Oct. 9, 1997 PCT Filed Feb. 19, 1997 PCT Pub. No. WO97/31277 PCT Pub. Date Aug. 28, 1997A method of constructing a thin film mirror, which method comprises constructing the mirror from thin plastics film on a suction chamber (8) which has: (i) top and bottom edges (AA', BB') which lie on a required mirror surface; (ii) ends that each have a contact surface to the thin plastics film that lies on a required mirror surface which can be developed from a plane so that the thin plastic film is able readily to be attached; and (iii) no abrupt discontinuities in a mirror support edge part (ABC) of the suction chamber. |
