Matches 1 - 26 out of 26


Match Document Document Title
4444481 Exposure control circuit for a camera  
An exposure control circuit for camera comprises an integrating circuit including a plurality of capacitors for integrating a photocurrent which depends on the brightness of an object being...
4363541 Photographing apparatus  
A photographing apparatus employs a real time photometry technique, and includes a central processing unit to which information concerning the characteristic of a film such as a film speed and...
4311375 Light measuring circuit for photographic cameras  
A photo-electric converting element converts an incident light into a photo-electric signal corresponding to the illumination of the incident light. The photo-electric signal converted is...
4309088 Film magazine having an identity mark for identifying sensitivity of the film and a camera therefor  
A film magazine is provided with a peripheral surface carrying at least one photoelectrically discriminatable strip-like mark indicative of the sensitivity of film contained within the magazine,...
4231644 Electrical shutter for camera  
An electrical shutter comprises a first detent member which maintains a shutter drive member at its start position, and a second detent member which maintains a shutter in its open position. Upon...
4189221 Electrical shutter circuit  
An electrical shutter control circuit of the type which is integrated directly is disclosed. The light receiving element is connected across the input terminals of an operational amplifier, and a...
4045806 Extended range exposure control system  
An extended range exposure control system for photographic cameras having an aperture plate slidably movable from a first position in which it stops down the maximum relative aperture of the...
3914776 Shutter control device  
A shutter control device comprises three timing circuits and a switching circuit, and in a first timing circuit a first capacitor is charged by photoconductive current generated by a...
3890625 Long-time exposure apparatus for camera  
An apparatus includes an exposure time setting member for setting an exposure time within an ordinary range and a long-time exposure setting member for setting a longer exposure time. Long-time...
3750544 EXPOSURE CONTROL DEVICE FOR CAMERA  
The leading portion beyond the leading arcuate edge of a base plate for an exposure meter or exposure control meter is so bent that the leading end of the pointer may extend upwardly through an...
3687026 A LIGHT REFLECTIVE SHUTTER CONTROL APPARATUS  
A light scattering surface is mounted facing the objective lens to direct light to a photoelectric detector during movement of a shutter curtain so that shutter control is provided during the...
3643560 EXPOSURE TIME SETTING DEVICE FOR A PHOTOGRAPHIC CAMERA WITH A FROSTED GLASS PLATE PRECISION SETTING AND AN ELECTRONIC TIME SETTING ARRANGEMENT  
A device for the light dependent setting of the exposure time of a photographic camera having a frosted glass pane observation plane for controlling the exposure adjustment and an electronic time...
3618489 AUTOMATIC EXPOSURE TIME CONTROL FOR CAMERAS  
3611893 PHOTOGRAPHIC CAMERA WITH A SCANNING MECHANISM AND AN ELECTRONIC TIMING DEVICE  
A photographic camera is provided with a scanning mechanism and an electronic timing device which cooperate with an exposure meter to permit automatic setting of exposure times and diaphragm...
3593638 PHOTOGRAPHIC SHUTTER WITH ELECTONIC TIME FORMING DEVICE  
A photographic shutter is provided having an electronic timing circuit means for the exposure time and a setter connected to it for setting the exposure time. Control means are connectable to the...
3592113 CAMERA WITH MEANS FOR INDICATING AUTOMATICALLY DETERMINED EXPOSURE TIMES  
A photographic camera wherein the shutter opens in response to operation of a release trigger which simultaneously completes an electronic delay circuit serving to close the shutter with a delay...
3526826 EXPOSURE CONTROL INSTRUMENT FOR PHOTOGRAPHIC CAMERAS  
3509806 SHUTTER-FLASH SYSTEM FOR PHOTOGRAPHIC CAMERAS  
3487757 TIME CONTROL ARRANGEMENT FOR PHOTOGRAPHIC CAMERAS  
3468228 COLOR COMPENSATED SHUTTER  
3464332 AUTOMATIC EXPOSURE CONTROL SYSTEM  
1,188,994. Exposure control apparatus. INTERNATIONAL POLAROID CORP. May 8, 1967 [May 12, 1966], No.21294/67. Heading G2A. An exposure control has an ambient light aperture control system C Fig.1...
3455219 AUTOMATIC APERTURE SELECTION SYSTEM  
3386358 Exposure control apparatus for photomicrography  
3205797 Illumination responsive photographic shutter apparatus  
3205802 Photographic camera and accessory  
3063354 Device for automatically controlling the exposure time for photographic purposes  

Matches 1 - 26 out of 26