Patents
Sitemap › G02 - Optics › G02B - Optical elements, systems, or apparatus › G02B 15 - Optical objectives with means for varying the magnification
Patents for G02B 15 - Optical objectives with means for varying the magnification (11,929)
06/1987
06/16/1987US4673258 Ultra compact zoom lens system
05/1987
05/26/1987US4668054 Vari-focal photographic lens system of lens group exchange type
05/19/1987US4666258 Afocal zoom lens system
05/19/1987US4666257 Compact zoom lens
05/14/1987DE3638255A1 Camera zoom objective with at least two groups of lenses
05/05/1987US4662724 Telephoto zoom lens
05/05/1987US4662723 Flare stop for a large aperture ratio zoom lens system
04/1987
04/21/1987US4659189 Zoom lens of reduced total length
04/21/1987US4659188 Zoom lens
04/21/1987US4659187 Zoom lens using elements made of plastic materials
04/21/1987US4659186 Small size zoom lens
04/21/1987US4659171 Infrared afocal refractor telescope
04/14/1987US4657351 High magnification change rate zoom lens system
04/07/1987US4655558 Rear focus conversion lens apparatus
03/1987
03/31/1987US4653887 Changeable magnification inverted galilean finder
03/31/1987US4653877 Rear-focus conversion device lens for telephoto lens
03/31/1987US4653876 Close-up lens system
03/31/1987US4653874 Zoom lens
03/31/1987US4653873 Zoom lens
03/31/1987US4653872 Athermalized zoom lens system
03/31/1987US4653871 Rear conversion lens
03/31/1987US4653870 Compact vari-focal photographic lens system
03/24/1987US4652091 Compact zoom lens with short back focal distance
03/17/1987US4650295 Wide angle and variable magnification lens system for finite distance
03/17/1987US4650291 Zoom lens
03/03/1987US4647160 Small-sized wide angle zoom objective
02/1987
02/18/1987CN85101329A Zoom lens of reduced total length
02/17/1987US4643542 Telescopic sight with erector lens focus adjustment
02/17/1987US4643536 Rear conversion lens
02/10/1987US4641928 Four-group telephoto zoom lens
01/1987
01/27/1987US4639096 High range zoom lens
01/27/1987US4639095 Telephoto zoom lens
01/20/1987US4637690 Telecentric zoom lens system
01/13/1987US4636040 Zoom lens system
01/06/1987US4634237 Zoom lens
01/06/1987US4634236 Compact zoom lens system of a relatively high zoom ratio capable of providing a wide field angle
01/06/1987US4634235 Lens system capable of converting focal length by addition of a lens
12/1986
12/30/1986US4632519 Zoom lens including a wide angle of view
12/23/1986US4630902 Compound eye optical system having a variable magnification function
12/23/1986US4630899 Zoom lens having movable diaphragm
12/16/1986US4629294 Zoom lens
12/16/1986US4629293 Zoom lens system
12/16/1986US4629292 Small telephoto zoom lens
12/16/1986US4629291 Zoom lens
12/02/1986US4626076 Zoom lens
11/1986
11/25/1986US4624536 Four component zoom lens
11/18/1986US4623226 Compact zoom lens system having three lens groups
11/11/1986US4621906 Auto-focus zoom lens assembly
11/11/1986US4621905 Fast compact zoom lens
10/1986
10/21/1986US4618220 Telephoto zoom lens
10/21/1986US4618219 Zoom lens
08/1986
08/26/1986US4607918 Zoom lens system
08/05/1986US4603948 Large-aperture wide-angle zoom lens system
07/1986
07/22/1986US4601545 Variable power lens system
07/16/1986EP0187177A1 Analytic function optical component
07/15/1986CA1207570A1 Zoom lens operating mechanisms
07/01/1986US4597641 Variable-power copying lens
06/1986
06/24/1986US4596447 Conversion type varifocal lens system
06/17/1986US4595270 Finder system
06/03/1986US4592626 Compact zoom lens system
05/1986
05/27/1986US4591244 Zoom lens
05/27/1986US4591235 Zoom lens system
05/27/1986US4591234 Rear focus conversion lens
05/21/1986EP0181395A1 Variable power lens system
05/13/1986US4588266 Filter device for reflex optical system zoom lens
05/13/1986US4588265 Telecentric rear converter
05/06/1986US4586814 Variable power projecting device
05/06/1986US4586793 Zoom lens
04/1986
04/29/1986US4585314 Projection lens
04/15/1986US4582399 Zoom lens system
04/01/1986US4579428 Small zoom lens
03/1986
03/18/1986US4576445 Zoom lens
03/18/1986US4576444 Macro-focus zoom lens
03/18/1986US4576443 Zoom lens with high variable power ratio including wide-angle capability
02/1986
02/25/1986US4572620 Zoom lens system
02/18/1986US4571033 Zoom lens
02/18/1986US4571032 Zoom lens
02/18/1986US4571031 Wide angle zoom objective
02/05/1986EP0170370A1 Dual-magnification rear projection lectern
02/04/1986US4568150 Zoom lens system
01/1986
01/14/1986US4564267 Variable-focal-length lens
12/1985
12/31/1985US4561740 Dual-magnification rear projection lectern
12/24/1985US4560254 Zoom lens system
12/24/1985US4560253 Zoom lens system
12/24/1985US4560242 Variable magnification optical system
12/10/1985US4557567 Lens system with plastic lenses compensating for temperature changes
12/05/1985WO1985005466A1 Variable power lens system
10/1985
10/22/1985US4548481 Variable magnification observation optical device
09/1985
09/10/1985US4540249 Wide angle zoom lens
09/04/1985EP0153740A2 Telescopic sight with erector lens focus adjustment
08/1985
08/06/1985US4533218 Zoom lens operating mechanisms
07/1985
07/23/1985US4530578 Variable magnification observation apparatus
07/16/1985US4529286 Attachment lens system for single-lens reflex cameras
07/09/1985US4527867 Wide angle zoom lens
07/02/1985US4526443 Telecentric illumination system
06/1985
06/26/1985EP0145845A1 Dual field of view catadioptric optical system
06/25/1985US4525050 Photographic camera with built-in optical converter
06/25/1985US4525042 Optical system of variable focal and back-focal length
06/25/1985US4525036 Zoom lens
06/18/1985US4523814 Zoom lens
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