Sineimage Reflectance Transparent YE0121 Resolution Test Chart
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Detailed Product Description
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Product Description Specification The YE0121 test chart is designed for the adjustment of camera
lenses and checking back focal distance. It shows a 72 sector
Siemens star on a white background. The YE0121 test chart is designed for adjustment of camera lenses checking back focal distance. With the aid of a low transmission filter and by means of low level lighting make sure that the camera is not over modulated with the aperture in the open position. 1. Optical focus: Adjust focus of zoom lens at greatest focal length. 2. Back focal distance (lens): Adjust focus at shortest focal length by regulating lens mechanically with adjustment screw and optimize alternatively with a). 3. Back focal distance (pick-up tubes): If focus varies from channel to channel between greatest and shortest focal length, the individual pick-up tubes must be adjusted mechanically in the optical axis. Select white channel. Set optical focus at greatest focal length. With shortest focal length and divergent focus adjust the pick-up tube in W-channel until optimum focus is achieved. If necessary optimize by alternating with optical focus adjustment. With unchanged optical focus adjustment and shortest focal length
adjust the red and blue pick- up tube until optimum focus is
achieved. Image focus (focus adjustment) is maintained at all focal
lengths (zoom-in) and constant distance from object by means of
back focal distance adjustment. Standard Transparent/Reflectance Test Chart Size
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| Product Tags: Sineimage YE0121 Reflectance Camera Lenses Test Chart |
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