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The quality of the industrial camera judgment factors

by:Fugen      2020-10-16
When evaluating automation industry lens quality will generally from the resolution, Octavia, and a few practical parameters such as depth of field: 1. Resolution ( 分辨率) : also called identification rate, like, refers to the camera's ability to clearly distinguish your subject scenery fiber details, tripod, industrial camera resolution is the cause of the phenomenon of light diffraction, the diffraction of light, In the love spot) 。 Resolution is the unit of 'line of/mm' ( lp /毫米) 。 2. Octavia degrees ( 锐度) : also known as contrast, refers to the brightest and darkest part of the image contrast. 3. The depth of field ( 景深) : in the scene space, located in the focus plane within a certain distance before and after the scenery, can also form a relatively clear image. Above in focusing object plane can form a relatively clear images of the depth of the distance between scene, is to gain a relatively clear images on the real image plane depth range of landscape space, called the depth of field. 4. Coefficient of maximum relative aperture and aperture: relative aperture, refers to the incident light ding, industrial camera hole diameter ( In D) With the focal length ( F) The ratio of, i. e. , relative aperture = D/f. The reciprocal of relative aperture, called aperture coefficient ( 孔径范围) , also known as f/f-stop coefficient or light hole number. General relative aperture of lens can be adjusted, the maximum relative aperture or aperture coefficient is often labeled on the industrial scene, such as 1:1. 2 or f / 1. 2. If the spot light is dark or exposure time is short, you need to try to choose the biggest industrial lens relative aperture is bigger. Industrial camera interaction relationship between the various parameters of a high-performance automation industry, in terms of resolution, Octavia, depth of field has a very good reflected, for a variety of aberration correction is also quite good. 1. The influence of the size of the focal length is the focal length is smaller, the greater the depth of field. The smaller the focal length, the greater the distortion; The focal length is smaller, vignetting phenomenon more serious, reduce aberration on the edge of the intensity of illumination. 2. Effect of the aperture size in the aperture, the greater the image brightness is higher; The smaller the aperture, the greater the depth of field; The larger the aperture, the higher the resolution. 3. As the central and edge like the edge of the high resolution center as a center high 4 edge light field intensity of illumination. The influence of light wave length
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