| 单词 | casket lens |
| 释义 | > as lemmascasket lens casket lens n. (see quot. 1895). ΚΠ 1892 J. T. Taylor Optics Photogr. 88 Casket lenses are now being made by several manufacturers. 1895 J. A. Hodges Photographic Lenses xviii. 113 ‘Casket’ lenses..are not usually ‘combination’ lenses,..the casket usually containing three or more doublet lenses... The casket system..provides the novice with several lenses of various focal lengths..so that different angles of view may be included upon the same plate. < as lemmas |
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