Lenses (for Machine Vision)CA-L series

CA-LMHR20

Ultra high resolution Telecentric Macro Lens Straight 2x

SPECIFICATIONS

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Model

CA-LMHR20*1

Optical magnification

×1.73 to ×2.20

Max. compatible image sensor size

2/3"

Field of view

2/3":
Low magnification 4.8 × 4.1 mm 0.19" x 0.16", High magnification 3.8 × 3.2 mm 0.15" x 0.13"
1/1.8":
Low magnification 4.1 × 3.1 mm 0.16" x 0.12", High magnification 3.2 × 2.4 mm 0.13" x 0.09"

F-stop range (aperture)

Low magnification: 6.8 to 43, High magnification: 8.7 to 55

Resolving power

Center/periphery: 120 cycles/mm

WD

Low magnification: 114.8 mm 4.52", High magnification: 109.4 mm 4.31"*2

TV distortion

Low magnification: 0.001%, High magnification: 0.011%

Depth-of-field

Low magnification: 0.428 mm0.02", High magnification: 0.264 mm0.01"*3

Pixel resolution
(US 3.5 µm 0.14 Mil: low magnification to US 4.4 µm 0.17 Mil: high magnification)

2 µm 0.08 Mil/pixel*4

Mount

C-mount

Resolution

2.6 µm 0.10 Mil*5

Environmental
resistance

Ambient temperature

0 to 50°C 32 to 122°F

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 1.57 Mil.
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.

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