CA-L series
CA-LMHR Series
With conventional telecentric macro lenses, the selections were limited and depended on the characteristic optical magnifications of the lenses. The VPR (Variable Pixel Resolution) mechanism not only makes it possible to select lenses intuitively according to the pixel resolution but also brings a level of freedom to the range over which optical magnification can be adjusted.
All models have a TV distortion of 0.02% or lower. This reduces distortion to 0.25 pixels or less over the entire image even with 2/3" image sensors. These lenses are the perfect choice for a wide range of applications from dimension measurement to alignment.
These lenses have been designed with consistently high-resolution not only in the center of the image but on its periphery as well. Even with a unit cell size of 3.45 μm 0.14 Mil/pixel, every part of the screen exhibits highresolution and contrast.
Even for the most detailed part of the chart, sufficient contrast between the white and black lines is obtained.
Because the resolution is insufficient, the contrast is extremely low, which makes it impossible to sufficiently recognize the edges.
Model |
CA-LMHR04*1 |
CA-LMHR08*1 |
CA-LMHR13*1 |
CA-LMHR20*1 |
CA-LMHR40*1 |
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Optical magnification |
x0.35 to x0.44 |
x0.69 to x0.88 |
x1.15 to x1.47 |
x1.73 to x2.20 |
x3.45 to x4.41 |
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Max. compatible image sensor size |
2/3" |
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Field of view |
2/3": Low magnification 24.0 x 20.2 mm 0.94" x 0.80", High magnification 19.1 x 16.1 mm 0.75" x 0.63" |
2/3": Low magnification 12.2 x 10.3 mm 0.48" x 0.41", High magnification 9.5 x 8.0 mm 0.37" x 0.31" |
2/3": Low magnification 7.3 x 6.2 mm 0.29" x 0.24", High magnification 5.7 x 4.8 mm 0.22" x 0.19" |
2/3": Low magnification 4.8 x 4.1 mm 0.19" x 0.16", High magnification 3.8 x 3.2 mm 0.15" x 0.13" |
2/3": Low magnification 2.4 x 2.1 mm 0.09"x 0.08", High magnification 1.9 x 1.6 mm 0.07" x 0.06" |
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F-stop range (aperture) |
Low magnification: 4.4 to 18, High magnification: 5.5 to 22 |
Low magnification: 5.6 to 23, High magnification: 7.1 to 29 |
Low magnification: 5.7 to 38, High magnification: 7.3 to 49 |
Low magnification: 6.8 to 43, High magnification: 8.7 to 55 |
Low magnification: 8.6 to 183, High magnification: 11 to 234 |
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Resolving power |
Center/periphery: 120 cycles/mm |
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WD |
Low magnification: 112.7 mm 4.44", High magnification: 112.7 mm 4.44"*2 |
Low magnification: 111.0 mm 4.37", High magnification: 111.0 mm 4.37"*2 |
Low magnification: 111.6 mm 4.39", High magnification: 111.6 mm 4.39"*2 |
Low magnification: 114.8 mm 4.52", High magnification: 109.4 mm 4.31"*2 |
Low magnification: 65.9 mm 2.59", High magnification: 65.9 mm 2.59"*2 |
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TV distortion |
Low magnification: 0.02 %, High magnification: 0.01 % |
Low magnification: 0.005 %, High magnification: -0.001 % |
Low magnification: 0.011 %, High magnification: -0.015 % |
Low magnification: 0.001 %, High magnification: 0.011 % |
Low magnification: 0.015 %, High magnification: -0.002 % |
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Depth-of-field |
Low magnification: 10.449 mm 0.41", High magnification: 6.612 mm 0.26"*3 |
Low magnification: 2.689 mm0.11", High magnification: 1.653 mm0.07"*3 |
Low magnification: 0.968 mm0.04", High magnification: 0.592 mm0.02"*3 |
Low magnification: 0.428 mm0.02", High magnification: 0.264 mm0.01"*3 |
Low magnification: 0.108 mm 0.004", High magnification: 0.066 mm 0.002"*3 |
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Mount |
C-mount |
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Pixel resolution |
10 µm 0.39 Mil/pixel*4 |
5 µm 0.20 Mil/pixel*4 |
3 µm 0.12 Mil/pixel*4 |
2 µm 0.08 Mil/pixel*4 |
1 µm 0.04 Mil/pixel*4 |
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Resolution |
8.39 µm 0.33 Mil*5 |
5.4 µm 0.21 Mil*5 |
3.3 µm 0.13 Mil*5 |
2.6 µm 0.10 Mil*5 |
1.68 µm 0.07 Mil*5 |
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Environmental resistance |
Ambient temperature |
0 to +50 °C 32 to 122 °F |
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Relative humidity |
35 to 80 % RH (No condensation) |
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Weight |
Approx. 400 g |
Approx. 285 g |
Approx. 330 g |
Approx. 410 g |
Approx. 650 g |
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*1 The above values were calculated according to optical design values. Actual values for individual lenses will differ according to precision of assembly. |