| 单词 | tele-negative | 
| 释义 | > as lemmastele-negative   tele-negative  n. and adj.  Brit. , U.S. [after German Telenegativ (1897 or earlier)]			 Optics 		 (a) n. a strongly diverging compound lens, esp. (in later use) one which serves as a component in a telephoto lens, or which is used with an astronomical eyepiece to magnify the image (cf. Barlow lens n. at Barlow n. 1);		 (b) adj. designating a compound lens of this type (chiefly in  telenegative lens); having the property of such a lens.Cf. tele-positive n. and adj. ΘΚΠ society > leisure > the arts > visual arts > photography > camera > parts and accessories of camera > 			[adjective]		 > types of lens flat field1841 wide-angle1865 slow1867 wide-angled1873 fast1877 rapid1878 fish-eye1882 sharp1883 symmetrical1890 telephotographic1891 telephotographic lens1891 narrow-angle1893 stigmatic1896 tele-negative1898 tele-positive1898 bloomed1945 soft1945 wide-field1950 1898    Year Bk. Photogr. 18 		(table)	  				Zeiss' Tele-Objectives... Tele-Negative 1:2. 1901    Photo-miniature May facing p. 56 		(caption)	  				Combination consisting of Zeiss Series VIIa, No. 8, and Tele-negative System of 3-in. focus. 1955    J. B. Sidgwick Amateur Astronomer's Handbk. viii. 145  				Telenegatives were used before the development of the telephoto lens to increase the plate-scale of camera objectives, and are still to be found on the second-hand market. 2005    M. B. Pepin Care Astron. Telescopes & Accessories v. 82 		(caption)	  				The design incorporates a telenegative element and has 10-mm eye relief. 2014    N. English Grab 'n' go Astron. v. 78  				This [sc. a Barlow lens] is usually a two-element tele-negative lens that amplifies any eyepiece magnification by a factor of anywhere between 1.5× and 5×. < as lemmas | 
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