![]() Large-format sensor sizes of area scan cameras or line scan cameras use colour cameras which are possibly supposed to replace monochrome cameras and if only little light is available, as they require 3 - 4x more light than a comparable monochrome sensor.plan light-critical fast applications with a short exposure time.conduct precision measurements, for instance, or finest surface inspections with as little camera noise falsifying the result as possible.Important: If you have the choice between a larger and a smaller sensor for the same camera version, please take the larger variant if you… A 1/3" sensor, for example, has only approximately 40% of the surface of a 1/2" sensor and is therefore cheaper. It enables the manufacturers to produce a larger number of sensors at a lower price from one wafer. The miniaturisation is a consequence of enhanced production processes which allow for smaller light-sensitive surfaces with a (hopefully) similar performance. If a standard VGA sensor had, in some cases, a size of 2/3" in the late 1980s, it is only 1/3" today. In general there is the trend that the sensors become smaller and smaller on the mass camera market. The quite popular camera resolution of 1600 x 1200 pixels often uses a somewhat larger sensor with 1/1.8" with the same pixel size. Industrial cameras usually use 1/3" sensors in case of resolutions of 640 x 480 pixels, cameras with 1280 x 1024 pixels mainly 1/2". A CCD the light-sensitive surface of which corresponds to a 1/2-inch tube was therefore called 1/2-inch sensor, even if this does not correspond to the real CCD sensor size. Equivalent CCD sensors which are supposed to replace the cathode-ray tubes had to cover exactly this surface. The diagonal of the light-sensitive surface within the tube was of course smaller and represented approximately two thirds of the outer diameter. The actual image converter of the tube cameras was located in a glass vacuum tube, and the different pick-up tubes were, among other things, classified according to their outer diameter of the glass bulb. The inch data of the CCD and CMOS sensors only have a historic explanation: pick-up tubes of TV cameras were used up to the mid-1980s and were long superior to CCD or CMOS sensors which were invented in the late 1960s. Typical sensor sizes of industrial cameras The 1-inch sensor has a diagonal of 16 mm. These sensor sizes, too, are indicated in inches. The sensors used in standard cameras are clearly smaller and range from 4 to 16 mm image diagonal. The C-mount thread has an actual diameter of 1 inch, i.e. The majority of cameras with smaller sensors are used with so-called C-mount or possibly CS-mount optics. Sensor sizes of standard camerasĬlassic machine vision cameras have varyingly large sensors, depending on the camera and resolution used. precision measurements are supposed to be conductedĪ larger sensor with larger pixels is in almost every case the technically better choice, however, the price is always higher.low-noise images with high dynamic image response are required.This is possible because the sensitivity of the pixels increasingly enhances, too, as much as the noise performance of the electronics is being optimised.Īs technical limits are reached in this respect, too, it is worthwhile to compare cameras with different sensor and pixel sizes with the same resolution, especially if… As a general trend, sensor and pixel sizes shrink in order to cut more and more sensors out of one wafer. The advancing technological development of CCD and CMOS sensors allows for the production of finer and finer semiconductor structures. Sensor and pixel sizes of CCD and CMOS sensors
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