Lenses (for Machine Vision)

CA-L series

High Resolution, Low Distortion Lens

CA-LHR Series

Special optical design and construction

The CA-LHR Series provides a resolving power of 200 cycles/mm at the centre of the lens and 140 cycles/mm on the periphery of the lens, which is twice or higher the performance of conventional high-resolution lenses. This makes it possible to obtain high-contrast images and perform stable inspections of the dimensions and appearance of targets.

Minimum working distance

By using special low-scattering glass, we have achieved a working distance of 0.1 m for all models. This makes it possible to use the lens to the extent of its capabilities over a wide range without needing a close-up ring.

Specifications

High Resolution, Low Distortion Lens

Model

CA-LHR5

CA-LHR8

CA-LHR12

CA-LHR16

CA-LHR25

CA-LHR35

CA-LHR50

Focal point

5 mm

8.5 mm

12 mm

16 mm

25 mm

35 mm

50 mm

F-stop range (aperture)

F1.8 to F16

F1.8 to F11

F1.8 to F16

F2.0 to F16

F2.8 to F16

Minimum WD

0.1 m

Mount

C-mount

Filter size

46.0 mm P0.75

34.0 mm P0.5

25.5 mm P0.5

34.0 mm P0.5

30.5 mm P0.5

Compatible image/CCD size

2/3"

TV distortion

-0.33% (-0.11%)*1

0.31% (-0.02%)*1

-0.12% (0.01%)*1

-0.20% (-0.11%)*1

-0.09% (-0.04%)*1

0.05% (-0.01%)*1

-0.02% (0.02%)*1

Resolving power

200 cycles/mm at centre, 140 cycles/mm on periphery

Ambient temperature/humidity range

0 to +50°C, 35 to 80% RH (No condensation)

Lens coating

WIDE, BAND MULTICOATING

Weight

Approx. 120 g

Approx. 115 g

Approx. 105 g

Approx. 90 g

Approx. 95 g

Approx. 160 g

Approx. 170 g

*1 Indicates specification for compatible image/CCD size. Value in parenthesis applies to 1/3" image/CCD size.

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