Lens
Keyence CA-LM4
Lenses (for Machine Vision) CA-L series
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Specification
| Model | CA-LM4*1 | |
| Type | Standard | |
| Optical magnification (reference magnification) | x4 | |
| Magnification range | Approx. ±5 % relative to reference axis | |
| WD (at reference magnification) | 70.3 mm*2 | |
| Compatible image/CCD size | 1/2" | |
| Field of view (at reference magnification) | 1/3" | 0.9 x 1.2 mm |
| 1/2" | 1.2 x 1.6 mm | |
| 2/3" | - | |
| F-stop range (aperture) | 26.5 | |
| Depth of field | 172 µm*3 | |
| Max. TV distortion | -0.22 % | |
| Resolution | 4.5 µm*4 | |
| Mount | C-mount | |
| Ambient temperature/humidity range | 0 to +50 °C, 80 % RH (No condensation) | |
| Weight | Approx. 58 g | |
| *1 The above values are all calculated according to optical design values. Actual values for individual lenses will differ according to precision of assembly. *2 Working distance indicates a working distance of each lens at reference magnification. Working distance will vary depending on magnification adjustment. (Excluding CA-LM1/LMA1) *3 The indicated depth of field is a theoretical value that assumes 1/2" or 2/3" Image/CCD size and a horizontal resolution of 320 TV lines. (Circle of least confusion is 40 µm in the image) *4 The smallest resolvable feature able to be detected under 550 nm wavelength light. |
