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Variable Iris Bi-telecentric Lens

Variable Iris Bi-telecentric Lens

DTCA series bitelecentric lens are designed and optimized for high accuracy measurement application. These lenses feature variable iris for Depth of Field and resolution adjustment,big F/# for high pixel camera and one style design which is easy for industrial manufacture. Each of the lenses is fully tested and test reports are available.

  • Support up to 8M Pixel cameras;
  • Zero perspective error over the entire Field of View;
  • Big depth of field and constant magnification over defined depth of field;
  • Customization available with best performance/cost rate;
  • Equipped with a Manual Iris for adjusting the Depth of Field.


Model Description Inquiry
DTCA230-22L 22mm FOV Bi-telecentric lens, support 2/3" sensor Detail
Optical specifications
Magnification (x) 0.5
Object Field of View (Φmm) 22
Working Distance (mm) 65±1
Max Sensor Size (Φmm) 11.0(2/3")
Aperture (F/#) 5.0
Telecentricity typical (max) (deg) ≤0.1
Distortion typical (max) (%) ≤0.1
MTF30 (lp/mm) ≥160
Depth of Field (mm) ±0.8@F5
Length of I/O (mm) 189±1
Field of View(mmxmm)
2/3" ICX625/665 with 8.47x7.10 16.94x14.20
Mechanical specifications
Mount C
Length (mm) 106.7
Weight (kg) -
Coaxial Light No
Iris No
DTCA230-22C 22mm FOV Bi-telecentric lens, support 2/3" sensor, Coaxial Light Detail
Optical specifications
Magnification (x) 0.5
Object Field of View (Φmm) 22
Working Distance (mm) 65±1
Max Sensor Size (Φmm) 11.0(2/3")
Aperture (F/#) 5.0
Telecentricity typical (max) (deg) ≤0.1
Distortion typical (max) (%) ≤0.1
MTF30 (lp/mm) ≥160
Depth of Field (mm) ±0.8@F5
Length of I/O (mm) 189±1
Field of View(mmxmm)
2/3" ICX625/665 with 8.47x7.10 16.94x14.20
Mechanical specifications
Mount C
Length (mm) 106.7
Weight (kg) -
Coaxial Light Yes
Iris No
DTCA230-28 28mm FOV Bi-telecentric lens, support 2/3" sensor Detail
Optical specifications
Magnification (x) 0.4
Object Field of View (Φmm) 28
Working Distance (mm) 96±2
Max Sensor Size (Φmm) 11.0(2/3")
Aperture (F/#) 10.7
Telecentricity typical (max) (deg) ≤0.1
Distortion typical (max) (%) ≤0.1
MTF30 (lp/mm) ≥80
Depth of Field (mm) ±2.6@F10.7
Length of I/O (mm) 225±2
Field of View(mmxmm)
2/3" ICX625/665 with 8.47x7.10 21.18x17.75
Mechanical specifications
Mount C
Length (mm) 111.9
Weight (kg) -
Coaxial Light No
Iris No
DTCA230-28IR 28mm FOV Bi-telecentric lens, support 2/3" sensor, variable Iris Detail
Optical specifications
Magnification (x) 0.4
Object Field of View (Φmm) 28
Working Distance (mm) 96±2
Max Sensor Size (Φmm) 11.0(2/3")
Aperture (F/#) 5
Telecentricity typical (max) (deg) ≤0.1
Distortion typical (max) (%) ≤0.1
MTF30 (lp/mm) ≥80
Depth of Field (mm) ±1.2@F5
Length of I/O (mm) 230±2
Field of View(mmxmm)
2/3" ICX625/665 with 8.47x7.10 21.18x17.75
Mechanical specifications
Mount C
Length (mm) 116.6
Weight (kg) -
Coaxial Light No
Iris Yes
DTCA230-37 37mm FOV Bi-telecentric lens, support 2/3" sensor, variable Iris Detail
Optical specifications
Magnification (x) 0.3
Object Field of View (Φmm) 37
Working Distance (mm) 110±2
Max Sensor Size (Φmm) 11.0(2/3")
Aperture (F/#) 3.75
Telecentricity typical (max) (deg) ≤0.1
Distortion typical (max) (%) ≤0.1
MTF30 (lp/mm) ≥220
Depth of Field (mm) ±1.6@F3.75
Length of I/O (mm) 273±2
Field of View(mmxmm)
2/3" ICX625/665 with 8.47x7.10 28.23x23.67
Mechanical specifications
Mount C
Length (mm) 145.5
Weight (kg) -
Coaxial Light No
Iris Yes
DTCA230-37C 37mm FOV Bi-telecentric lens, support 2/3" sensor, variable Iris, Coaxial Light Detail
Optical specifications
Magnification (x) 0.3
Object Field of View (Φmm) 37
Working Distance (mm) 110±2
Max Sensor Size (Φmm) 11.0(2/3")
Aperture (F/#) 3.75
Telecentricity typical (max) (deg) ≤0.1
Distortion typical (max) (%) ≤0.1
MTF30 (lp/mm) ≥220
Depth of Field (mm) ±1.6@F3.75
Length of I/O (mm) 273±2
Field of View(mmxmm)
2/3" ICX625/665 with 8.47x7.10 28.23x23.67
Mechanical specifications
Mount C
Length (mm) 145.5
Weight (kg) -
Coaxial Light Yes
Iris Yes
DTCA230-66 66mm FOV Bi-telecentric lens, support 2/3" sensor, variable Iris Detail
Optical specifications
Magnification (x) 0.166
Object Field of View (Φmm) 66
Working Distance (mm) 166±3
Max Sensor Size (Φmm) 11.0(2/3")
Aperture (F/#) 3.3
Telecentricity typical (max) (deg) ≤0.1
Distortion typical (max) (%) ≤0.1
MTF30 (lp/mm) ≥260
Depth of Field (mm) ±4.7@F3.3
Length of I/O (mm) 329±3
Field of View(mmxmm)
2/3" ICX625/665 with 8.47x7.10 51.02x42.77
Mechanical specifications
Mount C
Length (mm) 146.5
Weight (kg) -
Coaxial Light No
Iris Yes
Ordering Information
It's easy to select the right lens for your application: our part numbers are coded as DTCA XXX-YY, where XXX defines the camera sensor size (230 = 2/3″) , in millimeters. For instance, a DTCM230-66 features  a 2/3″camera sensor.