| 摘要 |
1,172,260. Immersion lenses. TEXAS INSTRUMENTS Inc. Dec.13, 1967 [April 13, 1967], No. 56647/67. Heading G2J. [Also in Division C1] An infrared detecting system comprises I-R- transmitting element 2, e. g. a lens or dome, of Ge/Se/I glass, and I-R detector 1. The glass has composition, in atoms %, of approximately; Ge, 10-40; Se, 35-75; I, 0 to 45. The glass has R.I. of 2À3-2À5 at 3-5 Ám wavelength. The glass is substantially transparent to I-R over a range of e.g. 0À9-15 Ám. |
