| Patents for G03B 11 - Filters or other obturators specially adapted for photographic purposes (3,423) |
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| 06/30/1992 | US5126881 Lens hood for a photographic lens |
| 06/24/1992 | CN2108315U Pressure spring type adjustable special effect lens device |
| 06/03/1992 | EP0488559A2 Means and methods for creating multiple images on single film frame |
| 05/31/1992 | CA2055319A1 Means and methods for creating multiple images on single film frame |
| 05/13/1992 | EP0484465A1 Cinematographic optical system |
| 04/22/1992 | EP0481781A1 A camera attachment system |
| 04/14/1992 | US5105312 Lens mount accessory system |
| 04/08/1992 | CN1060160A Camera with multi-size and multi-picture image |
| 03/17/1992 | US5097280 Mounting apparatus of lens accessory |
| 03/17/1992 | US5096287 Video camera for an automobile |
| 03/10/1992 | US5095327 Camera lens hood |
| 02/12/1992 | EP0470131A1 Secure image production |
| 01/07/1992 | US5079576 Filter apparatus for camera |
| 01/03/1992 | WO1992000550A1 Colour filter adapter with changeable colour for optical pickup and projecting apparatuses resp. method for its production |
| 01/03/1992 | CA2090870A1 Colour filter adapter with changeable colour for optical pickup and projecting apparatuses resp. method for its production |
| 12/17/1991 | US5073789 Means and methods for creating multiple images on a single film frame |
| 12/04/1991 | CN2090071U 135 type camera back |
| 12/03/1991 | US5070407 Filter changing mechanism for a video camera |
| 11/27/1991 | EP0470131A4 Secure image production. |
| 11/27/1991 | EP0457881A1 A lens attachment |
| 09/24/1991 | US5051765 Camera |
| 08/28/1991 | CN2083759U Colour frame camera device |
| 08/13/1991 | US5040011 Self-mounted camera accessories |
| 07/17/1991 | EP0436701A1 Attachment for cameras. |
| 06/27/1991 | WO1991009340A1 A lens attachment |
| 02/21/1991 | WO1991002284A1 Attachment for cameras |
| 02/20/1991 | CN2071794U Artistic photographic hood |
| 01/29/1991 | US4989024 Simulated weapon |
| 01/24/1991 | WO1991001018A1 Cinematographic optical system |
| 12/19/1990 | CN2067839U Partial exposure camera |
| 12/18/1990 | US4978986 Camera accessories for contrast control |
| 12/12/1990 | CN2067417U 135 half-frame photographic device |
| 11/01/1990 | WO1990012694A1 Secure image production |
| 11/01/1990 | CA2053229A1 Secure image production |
| 10/10/1990 | EP0391436A2 Disposable single-use camera with lens shade |
| 09/26/1990 | CN2062860U Camera head mask against invalid photographing |
| 08/08/1990 | CN2060235U Multi-purpose plug-in sheet special effects lens hood |
| 06/20/1990 | CN2058502U Light intensity corrector loop for automatic camera |
| 05/15/1990 | CA1268973A1 Power generating optical filter |
| 04/19/1990 | DE3834833A1 Protection cap (protective lens cap) for the rear end face of interchangeable lenses |
| 03/20/1990 | US4909617 Camera hood with pivoting lens cap |
| 03/06/1990 | US4907022 Photographic gun |
| 02/21/1990 | CN2053351U Universal accessory for 135 cameras |
| 02/13/1990 | US4901098 For a camera |
| 02/13/1990 | US4901097 Disposable single-use camera with lens shade |
| 02/13/1990 | US4900131 Adjustable photographic device |
| 01/31/1990 | CN2052126U Continuous-background multiple photograph taking device for camera |
| 01/31/1990 | CN1039310A Repeated photosensitive method |
| 01/23/1990 | US4896226 Multi-motor electronic still camera having recording disk, focal plane shutter, and optical filters |
| 01/09/1990 | US4893143 Lens base and its accessories for any compact automatic camera |
| 11/08/1989 | EP0340683A2 Camera with color separation shutter |
| 11/07/1989 | US4879592 Camera with two-bladed shutter mechanism with multiple filter apertures disposed for relative movement to provide sequential color separation exposures |
| 10/24/1989 | US4876563 Motor-driven shutter for camera |
| 10/17/1989 | US4875066 Photography shade and vignetter |
| 10/11/1989 | CN2045859U Dividing shooting unit |
| 10/11/1989 | CN1036273A Electronic positioning camera with variable frame size |
| 10/03/1989 | US4871242 Soft-focus optical element |
| 09/19/1989 | US4868590 Camera with changeable focal length |
| 08/30/1989 | CN2043766U Camera with film and sectional structure |
| 08/30/1989 | CN1035185A Method for making colour filmstrip from black and white original manuscript of writting and diagram |
| 07/11/1989 | US4847648 For changing a focal distance |
| 07/04/1989 | USH654 Positive vignetting accessory |
| 06/27/1989 | US4843411 Camera containing a lens barrier therein |
| 06/14/1989 | CN2039433U Multiimage photographic unit |
| 06/01/1989 | DE3900351A1 Lens hood (lens shade), having a variable angular field and being format-related, for sliding variable-focus lenses, having synchronous wing adjustment corresponding to the focal length |
| 05/24/1989 | CN2038251U Partitioned camera |
| 04/19/1989 | EP0312199A2 Retractable eyeshield |
| 04/12/1989 | EP0311358A2 Filter arrangements |
| 03/28/1989 | US4816876 Contrast control for lens |
| 03/23/1989 | DE3730572A1 Photographic lens (objective) |
| 03/22/1989 | CN2034702U Accessory for expanding the 120 camera to be multifunctional |
| 03/15/1989 | CN2034288U Attachment of 135 type camera |
| 03/07/1989 | US4810078 Retractable eyeshield |
| 03/01/1989 | CN2033520U Pictures increasing apparatus of 135 camera |
| 02/14/1989 | US4805028 Television camera for endoscopes provided with an optical low-pass filter |
| 02/08/1989 | EP0302740A2 Lens caps |
| 02/08/1989 | CN2032336U Multi-explosure visual field cover for camera |
| 02/01/1989 | CN2031939U Image-separating device for photographic camera |
| 01/25/1989 | CN2031539U Device for taking one inch negative by 120 film |
| 11/30/1988 | CN88204404U Changeable lens shade |
| 11/30/1988 | CN88202168U Camera with electronic location and frame changing function |
| 11/23/1988 | CN88201752U Camara lens cover for proventing blank film |
| 11/02/1988 | CN88202979U 135 camera |
| 08/31/1988 | CN88210043U Single negative multiframe exposure accessory for common photo camera |
| 07/28/1988 | DE3701337A1 Pluggable pinhole diaphragm for macrophotolenses of miniature reflex cameras (35mm), size 24mm x 36mm, for extending the depth of field |
| 07/12/1988 | US4757387 Optical system for a single-lens reflex type video still camera |
| 06/28/1988 | US4754297 Camera and filter assembly |
| 06/21/1988 | US4752798 Swingable holder for anterior accessories of an objective lens |
| 06/15/1988 | CN87208990U Magic device for photographic colour |
| 05/18/1988 | EP0267754A2 Partial eyeshield |
| 04/06/1988 | CN87213163U Digital locating lens hood for zoom lens |
| 04/05/1988 | US4736219 Camera with a lens cover |
| 03/16/1988 | CN87203081U Single negative multiframe image photographic shade |
| 03/08/1988 | US4729648 Partial eyeshield |
| 02/17/1988 | CN87204095U Trick photography hood of camera |
| 02/10/1988 | CN86200898U Multi-functional folding photographic camera bellows |
| 01/26/1988 | US4721971 Photograph logging apparatus and method |
| 01/21/1988 | DE3722990A1 Mount for a lens attachment |
| 12/15/1987 | US4713493 Power generating optical filter |
| 12/01/1987 | US4710007 Camera system with lens coupling member |