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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VS6663CB датащи(PDF) 55 Page - STMicroelectronics |
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VS6663CB датащи(HTML) 55 Page - STMicroelectronics |
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55 / 64 page  Doc ID026749 Rev 2 55/64 VS6663CB Optical specification 55 8 Optical specification 8.1 Lens characteristics 8.2 User precaution As is common with many CMOS image modules the camera should not be pointed at bright static objects for long periods of time as permanent damage to the sensor may occur. Table 39. Lens design characteristics Parameter Value 2-element plastic lens - F/number 2.8 Effective focal length 2.31mm (paraxial) Horizontal FOV 50.7 ° Nominal focusing distance 16 mm (referred to top of module) Straylight No undesirable straylight artefacts to be present in image at contrast of: 1:105 out of scene 1:104 in scene Spectral weighting: Wavlength (nm) Weight 656.28 151 587.56 318 546.07 312 486.13 157 435.84 49 404.66 13 Lateral chromatic aberration from blue ( λ=435nm) to red (λ=640nm) < |3.8 um| Coating reflectance - All surfaces are coated. At least 50% of all surfaces must fulfil this specification. < 400 nm 400 - 670 nm >670 nm No limitation ≤ 1.0% absolute, 0.35% avg Straight line with a slope of < 3% / 100nm Maximum chief ray angle 29 ° |
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