CBC-Computar M3518-APVSW 35mm F1.8 ViSWIR Hyper Apo Visible-SWIR Lens | 5MP, 1/1.4", C-Mount

Quick Overview

Computar M3518-APVSW 35mm F1.8 ViSWIR Hyper Apo C-mount lens for 5MP visible-SWIR imaging from 400 nm to 1700 nm. Designed for 1/1.4" sensors, this broadband lens minimizes focus shift across visible and SWIR wavelengths for machine vision, UAV, remote sensing, hyperspectral imaging, and industrial inspection applications.

Computar M3518-APVSW 35mm ViSWIR Hyper Apo Lens

The CBC-Computar M3518-APVSW is a 35mm F1.8 ViSWIR Hyper Apo fixed focal length lens designed for broadband visible-to-SWIR imaging from 400 nm to 1700 nm. Built for 5MP visible + SWIR sensors and a 1/1.4" image format, this C-mount lens delivers high-resolution imaging performance across a wide spectral range without requiring focus adjustment between visible and short-wave infrared wavelengths.

With Computar’s ViSWIR Hyper Apo optical design, the M3518-APVSW minimizes focus shift across different wavelengths and working distances. This makes it ideal for applications that need consistent sharpness when switching between visible and SWIR light, including hyperspectral imaging, semiconductor inspection, food and material sorting, remote sensing, UAV imaging, machine vision, and industrial inspection systems.

The lens uses unique broadband coating technology to support high transmission across the visible and SWIR spectrum. Its low-distortion optical design provides megapixel clarity for demanding inspection and sensing applications where image accuracy, contrast, and wavelength consistency are critical.

The M3518APVSW is part of Computar’s ViSWIR Hyper Apo lens series, available in multiple focal lengths including 8mm, 12mm, 16mm, 25mm, 35mm, and 50mm. Designed around the popular 11.4 mm image circle format, this compact C-mount SWIR lens provides a strong balance of resolution, spectral performance, and integration flexibility for broadband machine vision systems.

Key Features:

  • 35mm fixed focal length ViSWIR Hyper Apo lens
  • Supports visible-to-SWIR broadband imaging from 400 nm to 1700 nm
  • Designed for 5MP visible + SWIR image sensors
  • Compatible with 1/1.4" image format sensors
  • F1.8 maximum aperture for high light transmission
  • Apochromat floating optical design reduces focus shift across wavelengths
  • Maintains focus consistency from visible light through SWIR
  • Low-distortion design for high-accuracy imaging applications
  • Unique coating technology supports high transmission across a broad spectral range
  • Manual iris and manual focus control
  • C-mount design for industrial camera integration
  • Compact form factor for machine vision, UAV, remote sensing, and inspection systems

Applications:

  • Visible-SWIR machine vision
  • Hyperspectral imaging
  • Industrial inspection
  • Semiconductor and electronics inspection
  • Food sorting and agricultural imaging
  • Material identification and classification
  • Remote sensing
  • UAV and drone imaging payloads
  • Scientific imaging
  • Security and surveillance imaging
  • Medical and bioscience imaging
Model NumberM3518-APVSW
Lens SeriesViSWIR Hyper Apo
Lens TypeFixed Focal Length Visible-SWIR Lens
Focal Length35mm
Maximum Aperture Ratio1:1.8
Iris RangeF1.8 - F16.0
Image Format1/1.4"
Resolution5MP
Wavelength Range400 nm - 1700 nm
Supported Sensor TypeVisible + SWIR Sensors
Maximum Image Circleφ11.4mm
MountC-Mount
Focus Range0.15m - Infinity
Iris OperationManual
Focus OperationManual
Effective Front Apertureφ22.5mm
Effective Rear Apertureφ9.8mm
Back Focal Length12.6mm
Flange Back Length17.526mm
Filter SizeM37.5 P=0.5mm
Dimensionsφ41mm x 67.0mm
Operating Temperature-10°C to +50°C
Weight199g

Distortion

Sensor FormatDistortion
1/1.4"0.0%
1/1.8"0.0%

Angle of View

Sensor FormatSensor SizeDiagonalHorizontalVertical
1/1.4"8.83mm x 7.07mm18.4°14.4°11.6°
1/1.8"7.07mm x 5.30mm14.4°11.6°8.7°
1/2"6.40mm x 5.12mm13.4°10.5°8.4°
1/4"3.20mm x 2.56mm6.8°5.3°4.2°

*Specifications are subject to change without notice. Please confirm compatibility with your camera, sensor size, wavelength range, and working distance before ordering.