light trapn.
/ˈlʌɪt trap/, U.S. /ˈlaɪt ˌtræp/ 1. Photography and Cinematography. A device which protects film or photographic plates from accidental exposure to actinic light; (sometimes) spec. one which excludes light from a darkroom or other place in which photographic materials are developed.
ΘΚΠ
the world > food and drink > hunting > equipment > trap or snare > [noun] > trap for insects
flycatcher1708
bug trap?1765
flapper1796
fly-cage1838
flypaper1842
fly-trap1855
catch-'em-alive-oh1856
light trap1881
society > leisure > the arts > visual arts > photography > photographic processes > processing and printing equipment > [noun] > other processing or printing equipment
filter paper1670
buffer1854
fuming-box1874
squeegee1878
light trap1881
changing table1882
print-washer1889
washer1891
safe lamp1893
rectifier1921
apron1935
register board1967
1881 Brit. Jrnl. Photogr. 20 May 252/2 Detailed particulars concerning the automatic ‘cut-off’ or light trap always employed in connection with the dark shutter of the most improved American camera slides.
1965 M. J. Langford Basic Photogr. xv. 266 If..the darkroom is designed for entry or exit of staff without introducing light, some form of ‘light trap’ is essential.
2005 P. Wheeler Pract. Cinematogr. (ed. 2) 45 Both the feed roll of film and the take-up roll are housed in a light-tight container provided with a light trap..—this assembly is known as the film magazine.
2. A trap incorporating a light, used for attracting, catching, and sometimes killing, nocturnal flying insects.
ΘΚΠ
the world > food and drink > hunting > equipment > trap or snare > [noun] > trap for insects > light
light trap1882
trap-light1896
1882 1st Rep. Board of State Hort. Commissioners (Calif.) 27 As it is a nocturnal moth, light traps may be invented to capture it.
1972 C. M. Gjullin & G. W. Eddy Mosquitoes Northwestern U.S. (Bull. U.S. Dept. Agric., Research Service, No. 1447) 12/2 Carbon dioxide is stimulating to many species of mosquitoes, and the numbers taken in light traps can be increased by placing a piece of dry ice on or near a trap.
2003 Daily Tel. 1 May 9/1 The research station has recorded moths caught in a light-trap at its site in Hertfordshire.
Derivatives
ˈlight-trapped adj. Photography and Cinematography provided with a light trap (sense 1).
ΘΚΠ
society > leisure > the arts > visual arts > photography > photographic processes > processing and printing equipment > [adjective] > light-trapped or safe-lit
light-trapped1894
safelighted1917
1894 Photo-beacon June 206/2 On opening a portion of the front of the camera, there are seen passing through a light-trapped opening, as many of the paper tapes as there are films in the magazine.
1956 Focal Encycl. Photogr. 677/1 Many darkrooms..have light-trapped entrances so that the staff can pass freely in and out while sensitized materials are being handled.
2007 A. Fox et al. Langford's Basic Photogr. (ed. 8) xi. 252 35 mm and 120 tanks..have a light-trapped inlet/waste for solutions to act on the film in sequence.
This entry has been updated (OED Third Edition, December 2021).
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n.1881