Focusing arrangements (focusing means, autofocus systems for cameras G 03 B 13/00; means for automatic focusing of projectors G 03 B 21/53; means for automatic focusing of projection-printing apparatus or copying cameras G 03 B 27/34, G 03 F)
3
/
02
•
moving lens along baseboard
3
/
04
•
adjusting position of image plane without moving lens
3
/
06
•
•
using movable reflectors to alter length of light-path
3
/
10
•
Power-operated focusing
3
/
12
•
•
adapted for remote control (control systems in general G 05)
5
/
00
Adjustment of optical system relative to image or object surface other than for focusing
5
/
02
•
Lateral adjustment of lens
5
/
04
•
Vertical adjustment of lens; Rising fronts
5
/
06
•
Swinging lens about normal to the optical axis
5
/
08
•
Swing backs
Details common to cameras
7
/
00
Control of exposure by setting shutters, diaphragms, or filters separately or conjointly (measuring intensity of light G 01 J; control systems in general G 05)
7
/
02
•
Control effected by setting a graduated member on the camera in accordance with indication or reading afforded by a light meter, which may be either separate from, or built into, camera body
7
/
04
•
Control effected by hand adjustment of a member that senses indication of a pointer of a built-in light-sensitive device, e.g. by restoring pointer to a fixed associated reference mark
7
/
06
•
•
by a follow-up movement of an associated reference mark to the pointer
7
/
08
•
Control effected solely by response to built-in light-sensitive device to the intensity of light received by the camera
7
/
081
•
•
Analogue circuits [3]
7
/
083
•
•
•
for control of exposure time [3]
7
/
085
•
•
•
for control of aperture [3]
7
/
087
•
•
•
for control of both exposure time and aperture [3]
7
/
089
•
•
•
for storage of exposure value in mirror reflex cameras [3]
7
/
091
•
•
Digital circuits [3]
7
/
093
•
•
•
for control of exposure time [3]
7
/
095
•
•
•
for control of aperture [3]
7
/
097
•
•
•
for control of both exposure time and aperture [3]
7
/
099
•
•
Arrangement of photoelectric elements in or on the camera [3]
7
/
10
•
•
a servo-motor providing energy to move the setting member
7
/
12
•
•
a hand-actuated member moved from one position to another providing the energy to move the setting member, e.g. depression of shutter release button causes a stepped feeler to co-operate with the pointer of the light-sensitive device to set the diaphragm and thereafter release the shutter
7
/
14
•
•
•
setting of both shutter and diaphragm aperture being effected so as to give the optimum compromise between depth of field and shortness of exposure
7
/
16
•
in accordance with both the intensity of the flash source and the distance of the flash source from object, e.g. in accordance with "guide number" of flash bulb and the focusing of the camera
7
/
18
•
in accordance with light-reducing "factor" of filter or other obturator used with or on the lens of the camera
7
/
20
•
in accordance with change of lens
7
/
22
•
in accordance with temperature or height, e.g. in aircraft
7
/
24
•
automatically in accordance with markings or other means indicating film speed or kind of film on the magazine to be inserted in the camera [3]
7
/
26
•
Power supplies; Circuitry or arrangement to switch on the power source; Circuitry to check the power source voltage [3]
7
/
28
•
Circuitry to measure or to take account of the object contrast [3]
