Lenses (for Machine Vision)

CA-L series

Variable-magnification Telecentric Macro Lens Supporting 2/3" Image Sensors

CA-LM Series

Reduction in measurement error

The CA-LM Series uses a group of front telecentric lenses to maintain a compact size and high performance. In spite of the small lens, the telecentric system maintains the target size regardless of vertical movement of the focal point. This is due to the targets principal ray being in parallel with the front lens optical axis resulting in little to no measurement error.

Specifications

Telecentric Macro Lens

Model

CA-LM1*1

CA-LM2*1

CA-LM4*1

CA-LM6*1

CA-LM8*1

Type

Standard

Optical magnification (reference magnification)

×1

×2

×4

×6

×8

Magnification range

-

Approx. ±3% relative to reference axis

Approx. ±5% relative to reference axis

WD (at reference magnification)

67 mm 2.64" *2

66.9 mm 2.63" *2

70.3 mm 2.77" *2

64.4 mm 2.54" *2

64.5 mm 2.54" *2

Compatible image sensor size

2/3"

1/2"

Field of view (at reference magnification)

1/3"

3.6 × 4.8mm 0.142" × 0.189"

1.8 × 2.4mm 0.071" × 0.094"

0.9 × 1.2mm 0.035" × 0.047"

0.6 × 0.8mm 0.024" × 0.031"

0.45 × 0.6mm 0.018" × 0.024"

1/2"

4.8 × 6.4mm 0.189" × 0.252"

2.4 × 3.2mm 0.094" × 0.126"

1.2 × 1.6mm 0.047" × 0.063"

0.8 × 1.07mm 0.031" × 0.042"

0.6 × 0.8mm 0.024" × 0.031"

2/3"

6.6 × 8.8 mm 0.26" × 0.34"

-

F-stop range (aperture)

11.5

15.4

26.5

39.3

52.4

Depth-of-field

920 µm 36.22 Mil*3

400 µm 15.75 Mil*3

172 µm 6.77 Mil*3

111 µm 4.37 Mil*3

79 µm 3.11 Mil*3

Max. TV distortion

0.02%

-0.04%

-0.22%

-0.10%

-0.04%

Resolution

7.7 µm 0.30 Mil*4

5.1 µm 0.20 Mil*4

4.5 µm 0.18 Mil*4

4.4 µm 0.17 Mil*4

Mount

C-mount

Ambient temperature/humidity range

0 to 50°C 32 to 122°F, 80% RH (No condensation)

Weight

Approx. 66 g

Approx. 57 g

Approx. 58 g

Approx. 64 g

Approx. 67 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.

Telecentric Macro Lens

Model

CA-LMA1*1

CA-LMA2*1

CA-LMA4*1

Type

Coaxial

Optical magnification (reference magnification)

×1

×2

×4

Magnification range

-

Approx. ±3% relative to reference axis

Approx. ±5% relative to reference axis

WD (at reference magnification)

67 mm 2.64" *2

66.9 mm 2.63" *2

70.3 mm 2.77" *2

Compatible image sensor size

2/3"

1/2"

Field of view (at reference magnification)

1/3"

3.6 × 4.8mm 0.142" × 0.189"

1.8 × 2.4mm 0.071" × 0.094"

0.9 × 1.2mm 0.035" × 0.047"

1/2"

4.8 × 6.4mm 0.189" × 0.252"

2.4 × 3.2mm 0.094" × 0.126"

1.2 × 1.6mm 0.047" × 0.063"

2/3"

6.6 × 8.8 mm 0.26" × 0.34"

-

F-stop range (aperture)

11.5

15.4

26.5

Depth-of-field

920 µm 36.22 Mil*3

400 µm 15.75 Mil*3

172 µm 6.77 Mil*3

Max. TV distortion

0.02%

-0.04%

-0.22%

Resolution

7.7 µm 0.30 Mil*4

5.1 µm 0.20 Mil*4

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. 75 g

Approx. 62 g

Approx. 66 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.

Variable-magnification Telecentric Macro Lens Supporting 2/3" Images

Model

CA-LM0510*1

CA-LM0307*1

Optical magnification (reference magnification)

×0.5 to ×1.0

×0.3 to ×0.75

WD (at reference magnification)

×0.5: 111 mm 4.37", ×1.0: 78 mm 3.07"*2

×0.3: 177.8 mm 7", ×0.75: 97 mm 3.819"*2

Compatible image sensor size

2/3"

Field of view (at reference magnification)

1/3"

3.6 × 4.8 mm to 7.2 × 9.6 mm 0.14" × 0.19" to 0.28" × 0.38"

4.8 × 6.4 mm to 12 × 16 mm 0.19" × 0.25" to 0.47" × 0.63"

1/2"

4.8 × 6.4 mm to 9.6 × 12.8 mm 0.19" × 0.25" to 0.38" × 0.50"

6.4 × 8.5 mm to 16 × 21.3 mm 0.25" × 0.33" to 0.63" × 0.84"

2/3"

6.6 × 8.8 mm to 13.2 × 17.6 mm 0.26" × 0.35" to 0.52" × 0.69"

8.8 × 11.7 mm to 22.0 × 29.3 mm 8.8 × 11.7 mm to 22.0 × 29.3 mm

F-stop range (aperture)

5 to CLOSE (F-stop: 2.8 to CLOSE)

Depth-of-field

×0.5: 5.12 mm 0.20", ×1.0: 1.28 mm 0.05"*3

×0.3: 14.22 mm 0.56", ×0.75: 2.27 mm 0.09"*3

Max. TV distortion

×0.5: -0.4%, ×1.0: -0.1%

×0.3: 0.10%, ×0.75: 0.025%

Resolution

×0.5: 6.7 µm 0.26 Mil, ×1.0: 3.4 µm 0.13 Mil*4

×0.3: 11.2 µm 0.44Mil, ×0.75: 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. 220 g

Approx. 345 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 a working distance at reference magnification. WD will vary depending on magnification adjustment.
*3 Depth-of-field applies to an F-stop of 16. Depth-of-field varies depending on F-stop setting.
The indicated depth-of-field is a theoretical value that assumes 1/2" image sensor size and a horizontal resolution of 320 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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