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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

8.5mm, f/2.8 Ci Series Fixed Focal Length Lens

8.5mm Focal Length

8.5mm Focal Length

Stock #86-601
Qty 1+
Volume Pricing
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Focal Length FL (mm):
Maximum Sensor Format:
Aperture (f/#):
Working Distance (mm):
100 - ∞
Maximum Image Circle (mm):
Numerical Aperture NA, Object Side:
Entrance Pupil Position (mm):
Exit Pupil Position (mm):
Object Space Principal Plane (mm):
Image Space Principal Plane (mm):
Primary Magnification PMAG:
Field of View at Max Sensor Format:
Horizontal: 124.9mm - 60.7°
Vertical: 88.9mm - 45°
Diagonal: 169.3mm - 77°
Horizontal Field of View, 2/3" Sensor:
128.6mm - 60.6°
Horizontal Field of View, 1/1.8" Sensor:
101.0mm - 49.2°
Horizontal Field of View, 1/2" Sensor:
88.3mm - 43.6°
Horizontal Field of View, 1/2.5" Sensor:
79.2mm - 39.5°
Horizontal Field of View, 1/3" Sensor:
64.6mm - 32.6°
Horizontal Field of View, 1/4" Sensor:
47.8mm - 24.4°
Maximum Distortion:
Coating Specification:
425 - 675nm BBAR
Filter Thread:
M30.5 x 0.5 with required adapter #89-932
Length (mm):
Maximum Diameter (mm):
Maximum Rear Protrusion (mm):
Number of Elements (Groups):
7 (5)
Iris Option:
Fixed Focal Length Lens
Weight (g):

Regulatory Compliance

RoHS 2015:
REACH 201:

Product Family Description

  • Streamlined Mechanical Designs of our C Series Lens
  • Up to 7.5 MegaPixels, 2.8μm Pixel Size Sensors
  • Up to 2/3", C-Mount Lens
  • 6mm to 50mm Focal Length

Our TECHSPEC® Ci Series Fixed Focal Length Lenses are a streamlined version of our C Series Fixed Focal Length Lenses. They feature the same low lens-to-lens variation and broadband anti-reflection (BBAR) coating for maximum light transmission, while offering reduced weight and size. An adjustable, lockable focus allows for setting and locking the best focus position for instrumentation integration. The Ci Series offers a wide range of aperture options, ensuring maximum flexibility of resolution, throughput, and depth of field. These compact lenses are designed specifically for volume integration into applications such as factory inspection and automation to benchtop biomedical devices.

Edmund Optics has created a family of high performance optical designs (the C Series family) and developed 6 customized optomechanical solutions targeted for specific applications. These lens sub-families utilize the same optics as the C Series lenses providing the same optical performance in a variety of optomechanical solutions to meet your application requirements:

  • C Series: Features locking cam focus and iris adjustment and is the most adjustable version of these optical designs; they are the typical high quality machine vision lenses. Also available with a VIS-NIR Broadband Anti-Reflection (BBAR) Coating.
  • Ci Series: Simplified mechanics featuring fixed apertures with compact housing. Industrial Ruggedization for reduced size, cost, and locked focus.
  • Cr Series: Stability Ruggedized with all optics glued in place and a locking C-clamp focus ring for reduced pixel shift and improved focus stability.
  • Cx Series: Modular, flexible mechanics allows lenses to be taken apart for easy integration of accessories such as liquid lenses, apertures, and more.
  • Liquid Lens Cx Series: Designed with an integrated liquid lens for quick autofocus.
  • Cw Series: Waterproof, designed to meet IEC Ingress Protection Code IPX7 and IPX9K

Technical Information

Focal Length A B C D
6mm M34.0 x 0.5 47.8mm 34mm 1.17mm
12mm M22.0 x 0.75 29.0mm 22mm 0.96mm
16mm M22.0 x 0.75 40.8mm 22mm 1.09mm
25mm M22.0 x 0.75 29.9mm 22mm 1.33mm
35mm M25.5 x 0.5 41mm 22.5mm 3.82mm
50mm M30.5 x 0.5 49.5mm 30.5mm 2.06mm