Name: 3.5mm, f/2.8 Ci Series Fixed Focal Length Lens
Brand: TECHSPEC
SKU: 87-546
Price: S$343.00

3.5mm, f/2.8 Ci Series Fixed Focal Length Lens

3.5mm Focal Length

Stock #87-546 3-5 days

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S$343.00

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S$343.00

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Iris Option:

Fixed

Length (mm):

39.38

Horizontal Field of View, 1/2" Sensor:

29.5mm - 87.2°

Filter Thread:

M105 x 1.00 (Male)

Filter Thread Adapter:

#89-848 (Required)

Maximum Diameter (mm):

Weight (g):

Horizontal Field of View, 1/3" Sensor:

23.0mm - 74.4°

Maximum Rear Protrusion (mm):

2.64

Maximum Image Circle (mm):

9.00

Numerical Aperture NA, Object Side:

0.0409

Horizontal Field of View @ Max Sensor Format:

41.2mm - 102.8°

Number of Elements (Groups):

8 (7)

Horizontal Field of View, 1/1.8" Sensor:

41.2mm - 102.8°

Front Thread:

M50.0 x 0.5 (Male)

Type:

Fixed Focal Length Lens

Diameter (mm):

26.50

Focal Length FL (mm):

3.50

Primary Magnification PMAG:

0.236

Maximum Sensor Format:

1/1.8"

Working Distance (mm):

0 - ∞

Mount:

C-Mount

Aperture (f/#):

f/2.8

Coating:

425 - 675nm BBAR

Coating Specification:

425 - 675nm BBAR

Entrance Pupil Position (mm):

15.27

Horizontal Field of View, 1/4" Sensor:

16.3mm - 57.4°

Object Space Principal Plane (mm):

18.31

Image Space Principal Plane (mm):

7.49

Field of View at Max Sensor Format:

Horizontal: 41.2mm - 102.3°
Vertical: 26.8mm - 82.3°
Diagonal: 63.6mm - 117.1°

Maximum Distortion (%):

-20.94

Exit Pupil Position (mm):

-15.28

Lens Wavelength Range:

VIS

Storage Temperature (°C):

-20 to +60 For questions regarding operating temperature please contact our support team

Regulatory Compliance

RoHS:

Compliant

Certificate of Conformance:

View

Product Family Description

Up to 2/3", C-Mount Lens
Up to 7.5 MegaPixels, 2.8µm Pixel Size Sensors
Instrumentation (Ci) Versions of our C Series Lenses with Streamlined Mechanical Designs and Fixed Apertures
3.5mm to 50mm Focal Length
Ruggedized (Cr) Designs Also Available

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. TECHSPEC® Ci Series Fixed Focal Length Lenses are designed specifically for volume integration into applications such as factory inspection and automation to benchtop biomedical devices. The Ci Series offers a wide range of aperture options, ensuring maximum flexibility of resolution, throughput, and depth of field.

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: All optics glued in place and a locking C-clamp focus ring. Stabilized Ruggedization 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.

#87-546, 3.5mm, f/2.8 Ci Series Fixed Focal Length Lens, Distortion Plot

#87-546, 3.5mm, f/2.8 Ci Series Fixed Focal Length Lens, Relative Illumination Plot

#87-546, 3.5mm, f/2.8 Ci Series Fixed Focal Length Lens, Working Distance versus Field of View Plot

#87-546, 3.5mm, f/2.8 Ci Series Fixed Focal Length Lens, Modulated Transfer Function (MTF) Plot, 75mm Working Distance, f2.8

#87-546, 3.5mm, f/2.8 Ci Series Fixed Focal Length Lens, Depth of Field Plot, 75mm Working Distance, f2.8

#87-546, 3.5mm, f/2.8 Ci Series Fixed Focal Length Lens, Modulated Transfer Function (MTF) Plot, 150mm Working Distance, f2.8

#87-546, 3.5mm, f/2.8 Ci Series Fixed Focal Length Lens, Depth of Field Plot, 150mm Working Distance, f2.8

Technical Information

Dimensions
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