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Browse by Category: Main > Optical & Optics
Class Information
Number: 396/380
Name: Photography > With viewfinder > Selective or adjustable viewfinder field > Variable size of mask opening
Description: Subject matter in which a portion of the scene that is viewed is changeable by altering the dimension of a viewing aperture.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8190019 Digital camera May. 29, 2012
7885538 Digital camera Feb. 8, 2011
7668456 Digital camera Feb. 23, 2010
7561793 User interface for controlling cropping in electronic camera Jul. 14, 2009
7493038 Method and apparatus for controlling privacy mask display Feb. 17, 2009
7424219 Viewfinder system for a digital camera and digital camera provided with such a system Sep. 9, 2008
7065294 Lens-fitted photo film unit and photofinishing method Jun. 20, 2006
7006764 User interface for controlling cropping in electronic camera Feb. 28, 2006
6907194 Camera having continuously cropping viewfinder Jun. 14, 2005
6587643 Lens-fitted photo film unit and photofinishing method Jul. 1, 2003
6538699 Real-image finder Mar. 25, 2003
6477333 Image frame changing apparatus for camera Nov. 5, 2002
6215963 Field frame switcher Apr. 10, 2001
6205296 Film information writing device, film information reading device and film information handling device Mar. 20, 2001
6181881 Field-of-view frame switching device Jan. 30, 2001
6154609 Lens-fitted photographic film unit Nov. 28, 2000
6151452 Camera, such as an APS camera, having a single-piece, rotatable viewfinder and light-pipe mask for format selection Nov. 21, 2000
6141504 Finder optical system Oct. 31, 2000
6141503 Visual field of finder change-over apparatus Oct. 31, 2000
6104532 Real image mode variable magnification finder optical system Aug. 15, 2000
6064834 Exposure and view finder orientation switching mechanism for a camera May. 16, 2000
6035140 Finder system for camera Mar. 7, 2000
5999756 Viewfinder device of display plural visual frames Dec. 7, 1999
5983026 One-time-use camera with variable format film encoder Nov. 9, 1999
5974265 Different variable format one-time-use camera with common film encodement device Oct. 26, 1999
5970267 Apparatus for switching visual field frame of view finder, operation apparatus therefor, and apparatus for acturating rotary operation member having neutral position Oct. 19, 1999
5950029 Variable format viewfinder mask and lens cover in camera Sep. 7, 1999
5950025 Print format selection device for camera Sep. 7, 1999
5946510 Albada type finder and camera therefor having a movable mask Aug. 31, 1999
5933667 Viewfinder mask for a photographic camera, viewfinder, and camera Aug. 3, 1999
5930539 Finder visual field changing mechanism Jul. 27, 1999
5897232 Camera with widthwise pseudo zoom masks and method of exposing a pseudo zoom image Apr. 27, 1999
5828914 Camera with variable format viewfinder Oct. 27, 1998
5784658 Optical data recording device of camera and lens-fitted photographic film unit Jul. 21, 1998
5774754 Camera capable of previewing a photographed image Jun. 30, 1998
5771416 Camera having simple and inexpensive finder field frame switching mechanism Jun. 23, 1998
5732298 Picture frame switching mechanism Mar. 24, 1998
5732297 Camera Mar. 24, 1998
5727245 Camera Mar. 10, 1998
5689743 Differential viewfinder masks Nov. 18, 1997
5678103 Camera with built-in mask Oct. 14, 1997
5659827 Camera viewfinder with exchangeable bright frames Aug. 19, 1997
5640631 Finder system of a single lens reflex camera Jun. 17, 1997
5623324 Variable viewfinder mask assembly Apr. 22, 1997
5612759 Variable format viewfinder Mar. 18, 1997
5592252 Field frame for finder Jan. 7, 1997
5587755 Variable format viewfinder for camera Dec. 24, 1996
5552845 Camera Sep. 3, 1996
5552931 Finder optical system Sep. 3, 1996
5541684 Camera having photographic frame size changing means controlled by an external operating member Jul. 30, 1996

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