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Resolution: Represents the minimum distance between two distinguishable points. It is defined by 0.61 times the wavelength (λ) divided by the Numerical Aperture (NA).
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Resolving Power: The number of black-and-white lines per millimeter. The unit is lines per mm (lp/mm).
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Modulation Transfer Function (MTF): Reflects the ability to reproduce contrasts in the image. It measures the spatial frequency and contrast transfer capabilities of the lens.
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Imaging Circle: The size of the imaging area, indicating the size of the CCD sensor.
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Camera Mount: Specifies various camera mounting standards and back focal lengths:
- C-mount: 1-inch diameter, 32 TPI, with a back focal length of 17.526mm.
- CS-mount: Same diameter and thread count, but with a back focal length of 12.526mm.
- F-mount: Back focal length of 46.5mm.
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Edge Brightness: The relative illumination from the center to the edges of the image as a percentage.
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Airy Disk: A concentric circle pattern that appears when light is focused to a point through an undistorted lens. The radius r of the Airy Disk can be calculated using the formula r = 0.61λ / NA.
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MTF and Resolution: MTF (Modulation Transfer Function) indicates the ability to reproduce contrast in the image. It reflects the lens's imaging performance and degree of image contrast. The resolution measures the discernibility between two points. Both parameters are closely related.
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Macro Lens: Lenses designed for close-up photography without extension tubes or close-up lenses, focusing at finite distances.
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FALenses Technology specializes in providing machine vision core hardware. You can go to the official website of FALenses Technology at https://www.falenses.com/ for more information.