Computar M5018-SW SWIR C-Mount Lens

USD 1,068.91

50mm fixed focal length C-mount lens for 2/3″ SWIR cameras (800-1700nm). Features manual F1.8-F16C iris, manual focus, and ø12.3mm image circle.

SKU Computar-M5018-SW Category
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Computar M5018-SW 50mm F1.8 SWIR Lens

Model Identifier M5018-SW
Official Part Number M5018-SW
GTIN Standard 0781904052165

Technical Overview

Industrial 50mm SWIR C-mount lens for 800nm–1700nm cameras. Features F1.8–F16 manual iris, 0.6m min focus distance, and ultra-low -0.3% distortion.

Key Features

  • Specifically designed for Short-Wave Infrared (SWIR) machine vision imaging (800nm–1700nm) [1.1.1]
  • Premium optical coatings deliver superior transmission and contrast in hyperspectral applications
  • Optimized for 2/3" format image sensors with a 12.3mm image circle
  • Equipped with manual focus and iris rings featuring secure locking screws
  • Ultra-compact mechanical design fits easily into tight industrial camera enclosures
  • Extremely low optical distortion of -0.3% ensures precise dimensional measurements

High-Transmission SWIR Lens Coating optimized for the 800nm to 1700nm wavelength range with secure focus and iris lock rings

Technical Specification Matrix

ParameterValue
Focal Length50mm
Max. Aperture Ratio1:1.8
Format Size2/3" (Max. Image Circle φ12.3mm)
Spectral Wavelength Range800nm - 1700nm (SWIR)
Operation Range - IrisF1.8 - F16C
Operation Range - Focus0.6m - Infinity
Control TypeManual (Iris and Focus with Locking Screws)
Mount TypeC-Mount
Filter Thread SizeM30.5 P=0.5mm
Optical Distortion-0.3% (at y=5.5 on 2/3" type sensor)
Back Focal Length13.6mm
Flange Back Length17.526mm
Operating Temperature-10°C to +50°C
Physical Weight (kg)0.09
Dimensions L x W x H (cm)3.82 x 3.35 x 3.35

Industrial Applications

1. Silicon Wafer Internal Crack Inspection

Silicon is optically transparent in the short-wave infrared spectrum. Pairing the Computar M5018-SW lens with an InGaAs SWIR camera allows factory automated inspection systems to perform sub-surface imaging on fast-moving solar cells and silicon ingots.

Problem Solved

Identifies internal micro-cracks, inclusions, and structural defects that are completely invisible under visible light. The lens's low -0.3% optical distortion ensures spatial calculations and crack lengths are registered with extreme geometric accuracy.

Silicon Wafer InspectionSub-surface Crack DetectionInGaAs Camera AlignmentPhotovoltaic Quality ControlSWIR Imaging

2. High-Throughput Moisture Sorting in Agriculture

Water has a strong absorption peak at 1450nm within the SWIR band. By mounting the M5018-SW lens on an automated conveyor sorting system, organic produce can be scanned to map water distribution and bruising.

Problem Solved

Enables sorting systems to identify bruised, rotting, or dehydrated fruit before visible exterior blemishes occur. The wide F1.8 aperture allows maximum light transmission, permitting high-speed line scan operations under safe illumination levels.

Moisture Content MappingAgricultural Produce SortingWater Absorption BandHyperspectral GradingHigh-Speed Conveyor Sorting

3. Industrial Defogging and Haze Penetration Surveillance

Short-wave infrared wavelengths scatter much less than visible light when passing through small environmental particles like haze, steam, and thick fog. This compact lens is deployed in rugged security enclosures across maritime docks, oil refineries, and chemical plants.

Problem Solved

Maintains critical facility visibility and process safety tracking during heavy fog or steam leaks. The integrated manual focus and iris locking screws prevent shifting due to constant heavy industrial vibrations and outdoor wind loads.

DefoggingEnvironmental Particle ScatteringVibration ResistanceRefinery Process MonitoringLong-Range SWIR Surveillance
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