- 업종: Consumer electronics
- Number of terms: 2480
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Special camera mode similar to the ‘B’ setting of a photographic camera shutter. The CCD integrates over a long (userdefined) period, providing very high sensitivity. Object must be stationary, external camera control and a frame memory are needed.
Industry:Consumer electronics
The part of a composite video signal that expresses brightness. Also called Y. Separately transmitted in Y/C (S-video).
Industry:Consumer electronics
The SI measurement of light intensity taken at the surface which the light source is illuminating. The measure of the total lumens falling upon a unit of area. 1 lumen per square meter. One Foot-candle equals 10.76 lux.
Industry:Consumer electronics
Minimum light level needed to achieve a 50% or 100% video output level when the camera is at maximum gain and the lens iris fully open. Can be computed from the nominal sensitivity, lens characteristics and maximum gain.
Industry:Consumer electronics
Camera feature where a reference field is compared with current fields. If a difference is detected, the camera outputs a pulse. An ideal feature for security application.
Industry:Consumer electronics
A lens parameter that defines the minimum distance from a camera lens to the point where an object can still be in focus.
Industry:Consumer electronics
Defines the resolution capability of a lens. Most lenses exhibit their best MTF when operated in the middle of their iris aperture range.
Industry:Consumer electronics
A grey filter added in front of a lens to reduce the amount of incoming light into the camera lens. It has no influence on color.
Industry:Consumer electronics
Type of camera mount in which there is 12 mm clearance between the lens rear mounting surface and the camera’s CCD.
Industry:Consumer electronics
Color video standard, used mainly in the United States and Japan. NTSC uses 525 scanning lines per picture, 30 pictures (frames) per second, each frame is made up of two sequential fields containing respectively the even and the odd lines (interlace).
Industry:Consumer electronics
