Small Lens Units
Endoscope Lenses/ Lens Units

Endoscope Lenses/ Lens Units

Objective lens units for 1/6, 1/10, 1/11, and 1/18 CCD and CMOS image sensors
All the lenses are aspheric lenses, enabling bright and deep depth-of-field.
1/18 lenses are ideal for small-diameter endoscopes for medical and industrial use.

1/6 Series

  • 1/6 SEL140-032

  • 1/6 SEL120-034

Specifications

Model 1/6 SEL140-032 1/6 SEL120-034
CCD size 1/6 inch
Image circle 3.0 mm
Cover Glass*1 0.3 mm 0.5 mm
Object distance 8 mm 10 mm
Depth of field 3 mm - ∞ 5 mm - 100 mm
Angle of view 140° 120°
F-number*2 3.5 to 8 3.5 to 10
Back focus*3 0.89 mm 0.56 mm
Distortion <45% <50%
Relative illumination >20% >40%
Chief ray angle <16° <1°
Outer diameter φ3.2 mm φ3.4 mm
Total length 4.35 mm 5.4 mm
Mount - -
IR cut filter
Sapphire cover glass -
  • *1 It is not mounted on the standard lens unit.
  • *2 F-number is adjustable upon request.
  • *3 The thickness of cover glass is not included.

1/10 Series

  • 1/10 SEL120-022

  • 1/10 SEL100-020

Specifications

Model 1/10 SEL120-022 1/10 SEL100-020
CCD size 1/10 inch
Image circle 1.8 mm 1.8 mm*4
Cover Glass*1 0.5 mm
Object distance 10 mm
Depth of field 5 mm - 100 mm
Angle of view 120° 100°
F-number*2 3.5 to 10
Back focus*3 0.93 mm
Distortion <35% <25%
Relative illumination >20% >25%
Chief ray angle <10°
Outer diameter φ2.2 mm φ2 mm
Total length 3.3 mm
Mount -
IR cut filter
Sapphire cover glass - -
  • *1 It is not mounted on the standard lens unit.
  • *2 F-number is adjustable upon request.
  • *3 The thickness of cover glass is not included.
  • *4 Vignetting occurs in the corners.

1/11 Series

1/11 SEL140-020

Specifications

Model 1/11 SEL140-020
Sensor size 1/11 inch
Image circle 1.49 mm
Cover Glass*1 0.15 mm
Object distance 8 mm
Depth of field 3 mm - ∞
Angle of view 140°
F-number*2 4 to 6
Back focus*3 0.38 mm
Distortion <50%
Relative illumination >50%
Chief ray angle <33°
Outer diameter φ2.0 mm (Changeable)
Total length 1.77 mm
IR cut filter
Sapphire cover glass
  • *1 It is not mounted on the standard lens unit.
  • *2 F-number is adjustable upon request.
  • *3 The thickness of cover glass is not included.

1/18 Series

  • 1/18 SEL080-015D

  • 1/18 SEL100-015D

  • 1/18 SEL120-015D

  • 1/18 SEL100-015S

Specifications

Model 1/18 SEL080-015D 1/18 SEL100-015D 1/18 SEL120-015D 1/18 SEL100-015S
Sensor size 1/18 inch
Image circle 1.0 mm
Cover Glass*1 0.4 mm
Object distance 8 mm
Depth of field 3 mm - 100mm
Angle of view 80° 100° 120° 100°
F-number*2 4.5 / 5 / 5.5 / 6
Back focus*3 0.37 mm
Distortion <20% <32% <46% <24%
Relative illumination >80% >70% >60% >50%
Chief ray angle <25°
Outer diameter φ1.5 mm
Total length 1.61 mm 1.24 mm 1.03 mm 0.7 mm
IR cut filter -
Sapphire cover glass -
  • *1 It is not mounted on the standard lens unit.
  • *2 F-number is adjustable upon request.
  • *3 The thickness of cover glass is not included.
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