Ultra high resolution Telecentric Macro Lens Straight 2x
Keyence CA-LMHR20
Lenses (for Machine Vision) CA-L series
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Specification
| Model | CA-LMHR20*1 | |
| Optical magnification | x1.73 to x2.20 | |
| Max. compatible image/CCD size | 2/3" | |
| Field of view | 2/3": Low magnification 4.8 x 4.1 mm, High magnification 3.8 x 3.2 mm 1/1.8": Low magnification 4.1 x 3.1 mm, High magnification 3.2 x 2.4 mm | |
| F-stop range (aperture) | Low magnification: 6.8 to 43, High magnification: 8.7 to 55 | |
| Resolving power | centre/periphery: 120 cycles/mm | |
| WD | Low magnification: 114.8 mm, High magnification: 109.4 mm*2 | |
| TV distortion | Low magnification: 0.001 %, High magnification: 0.011 % | |
| Depth of field | Low magnification: 0.428 mm, High magnification: 0.264 mm*3 | |
| Mount | C-mount | |
| Pixel resolution (US 3.5 µm: low magnification to US 4.4 µm: high magnification) | 2 µm /pixel*4 | |
| Resolution | 2.6 µm*5 | |
| Environmental resistance | Ambient temperature | 0 to +50 °C |
| Relative humidity | 35 to 80 % RH (No condensation) | |
| Weight | Approx. 410 g | |
| *1 The above values were calculated according to optical design values. Actual values for individual lenses will differ according to precision of assembly. *2 WD indicates the distance from the tip of the lens to the workpiece. Changing the magnification changes this distance. *3 The depth of field is a theoretical value calculated with an F-stop of 16 and a circle of least confusion of 40 µm. This varies depending on the F-stop. *4 The pixel resolution is the field of view per pixel. This varies depending on the camera used. US = Unit cell size (size of 1 pixel) The CA-LMHR Series can also be used at pixel resolutions other than those listed here depending on the optical magnification. *5 The smallest resolvable feature able to be detected under 550 nm wavelength light. |
