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          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

          x1.73 to x2.20

          Max. compatible image sensor size

          2/3"

          Field of view

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