CA-L series
CA-LHxG Series
The industry’s first fixed aperture replacement method
By using fixed apertures, we have eliminated the problem of foreign contamination occurring due to the aperture drive section rubbing against another surface when the lens is subjected to vibrations. At the same time, the ability to replace aperture plates ensures support for different situations. Because the aperture values are fixed, it is easy to ensure that multiple units all use the same F-stop.
After adjusting the lens extending amount, use the red ring to fix the focus. The construction of this fixing section differs from the pinpoint operation of a screw and performs fixing with a wide area, which makes it difficult for looseness to occur. The sufficient focus adjustment width enables both a minimum working distance of 0.1 m and ease of use.
Model |
CA-LH8G |
CA-LH12G |
CA-LH16G |
CA-LH25G |
CA-LH35G |
CA-LH50G |
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Type |
Vibration-resistant models |
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Compatible image/CCD size |
2/3" |
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Focal point |
8 mm |
12 mm |
16 mm |
25mm |
35 mm |
50 mm |
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F-stop range (aperture) |
F1.4/4/8/16*1 |
F2.0/4/8/16*1 |
F2.8/4/8/16*1 |
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Minimum WD |
0.1 m*2 |
0.15 m*2 |
0.2 m*2 |
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Resolving power |
100 cycles/mm at centre, 80 cycles/mm on periphery |
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Filter size |
27.0 mm P0.5 |
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TV distortion |
-0.6 % (-0.28 %)*3 |
-0.07% (-0.04 %)*3 |
-0.05 % (-0.1 %)*3 |
-0.04 % (-0.02 %)*3 |
-0.2 % (-0.05 %)*3 |
-0.03 % (-0.01 %)*3 |
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Mount |
C-mount |
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Environmental resistance |
Ambient temperature |
0 to +50 °C |
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Relative humidity |
35 to 80 % RH (No condensation) |
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Weight |
Approx. 78 g |
Approx. 65 g |
Approx. 66 g |
Approx. 73 g |
Approx. 62 g |
Approx. 76 g |
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*1 The vibration-resistant types are designed to have their apertures replaced. When shipped, the OPEN aperture is attached to the lens, so replace this with one of the other included apertures (F4, F8, or F16) as necessary. To use the f-stop (aperture) in the OPEN mode, use the lens without removing the OPEN aperture. |
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