KR970075961A
(ko )
1997-12-10
초점길이 비율에 대한 큰 역초점길이를 갖는 투사렌즈
US3020804A
(en )
1962-02-13
Optical objective
GB785573A
(enrdf_load_stackoverflow )
1900-01-01
SE8304735D0
(sv )
1983-09-01
Improvements in or rehting to infra-red lenses
GB900249A
(en )
1962-07-04
Improvements in and relating to varifocal lenses
GB1441119A
(en )
1976-06-30
Zoom lens
GB1333755A
(en )
1973-10-17
Optical system for a microscope
US3459468A
(en )
1969-08-05
Two-aspherical-surfaced,high speed photographic objective lens
GB1292341A
(en )
1972-10-11
A zoom lens
GB1241135A
(en )
1971-07-28
Wide angle zoom objective
GB724698A
(en )
1955-02-23
Improvements in and relating to photographic objectives
US4368955A
(en )
1983-01-18
Variable-focal-length objective
US2346086A
(en )
1944-04-04
Photographic objective
GB1334972A
(en )
1973-10-24
Optical system for the magnification varying portion of a zoom lens
GB1397508A
(en )
1975-06-11
Optical lens systems
US2682198A
(en )
1954-06-29
Photographic objective consisting of two negative meniscus components between two positive components
GB867649A
(en )
1961-05-10
Photographic wide angle objective
GB1092677A
(en )
1967-11-29
Varifocal objective system
US2466424A
(en )
1949-04-05
Four component highly corrected wide angular field objective with small petzval sum
GB1076789A
(en )
1967-07-19
Photographic objective of continuously variable focal length
GB755955A
(en )
1956-08-29
Improvements in or relating to microscope objectives
GB978555A
(en )
1964-12-23
Wide aperture projection objective of variable focal length
US3384435A
(en )
1968-05-21
Four component photographic objective of the gauss type
GB132303A
(enrdf_load_stackoverflow )
1900-01-01
GB618360A
(en )
1949-02-21
Improvements in or relating to photographic objectives