Lenses (for Machine Vision)CA-L series

CA-LM4

Lens

SPECIFICATIONS

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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 2.77" *2

Compatible image sensor size

1/2"

Field of view (at reference magnification)

1/3"

0.9 x 1.2 mm 0.035" x 0.047"

1/2"

1.2 x 1.6 mm 0.047" x 0.063"

2/3"

-

F-stop range (aperture)

26.5

Depth-of-field

172 µm 6.77 Mil*3

Max. TV distortion

-0.22 %

Resolution

4.5 µm 0.18 Mil*4

Mount

C-mount

Ambient temperature/humidity range

0 to +50 °C 32 to 122 °F, 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 sensor size and a horizontal resolution of 320 TV lines. (Circle of least confusion is 40 µm 1.57 Mil in the image)
*4 The smallest resolvable feature able to be detected under 550 nm wavelength light.

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