Каталог NIKON iNEXIV VMA на английском - страница 5
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Каталог Ayonis Deltec
Каталог NIKON iNEXIV VMA
New zooming optics make 3D parts measurements easier
| Newly designed optics with an Apochromat LWD objective | 10x zoom with wide field of view |
| lens | |
| The VMA-2520 comes standard with a five-step, 10x zoom optical | |
| Nikon has developed a new optical system that covers low | system that provides both superb resolution at high magnification |
| magnifications, has a long working distance and is suitable for | and a wide field of view at low magnification. Greater position |
| measuring three-dimensional parts. The Apochromat objective lens | accuracy, achieved by eliminating backlash in the zooming |
| features low distortion (0.1% or less) while providing a long | mechanism when using the five-step zoom range, makes it ideal |
| 73.5mm working distance throughout all magnification ranges. | for measurement applications. |
Moreover, improvements in the LED illumination system also increase image contrast by utilizing an Apochromatic lens to compensate for the blue wavelengths emitted from white LEDs.
| Optical magnification | 0.35x | 0.6x | 1x | 1.8x | 3.5x |
| Magnification on screen | 12x | 20x | 34x | 62x | 120x |
| (with 17" monitor at SXGA resolution) |
Field of view 13.3 x10mm 7.8 x5.8mm 4.7 x3.5mm 2.6 x1.9mm 1.33 x1mm
White LED illumination for fast, high-accuracy measurement 8-segment LED ring illumination This illumination system can be controlled from eight different directions. The white LED light with an average incidence angle of
18° makes possible observations of extremely low-contrast edges which are usually invisible under episcopic illumination. It is effective for measuring molds, medical devices and other threedimensional parts.
| High-intensity white LED light source for all | Episcopic and diascopic illuminations |
| illumination systems | |
| Both episcopic and diascopic illuminations employ a white LED | |
| The VMA-2520 employs a white LED light source for episcopic | light source that provides high-intensity closer to that of a halogen |
| illumination, diascopic illumination and 8-segment LED ring | lamp. For the episcopic illumination, which previously did not use a |
| illumination. The high-intensity white LED features constant color | white LED light source, the VMA-2520 employs the first flyeye |
| temperature and less flicker, thus it provides stable measurement | integrator in a measuring system, realizing both sufficient NA and |
| accuracy, particularly when observing color images. With the LED's | uniform illumination over a wide field of view. The diascopic |
| quick response to lighting controls, increased measurement | illumination uses a white LED array, backlight system. |
throughputs can be achieved.