光学工学・カメラ工学 技術ブログ
Lens selection guides, imaging fundamentals, and machine vision engineering references written by the Commonlands optical engineering team in San Diego.
49 articles
-
lens selectionWorking Distance and Minimum Object Distance
Working distance and minimum object distance in machine vision: how they differ, how to measure them, and how they drive lens and focal-l...
-
optical gaugingWhat Is a Telecentric Lens?
What a telecentric lens is: object-space telecentricity, how it removes perspective error for gauging, and low-distortion alternatives.
-
barrel distortionWhat Is a Low Distortion Lens?
What a low distortion lens is: barrel vs pincushion vs TV distortion, why it matters for measurement, and how to spec distortion in machi...
-
CマウントレンズWhat Is a C-Mount Lens?
What a C-mount lens is: the 17.526mm flange focal distance, 1-inch 32-TPI thread, manual iris control, and CS-mount compatibility.
-
BBAR coatingStray Light in Machine Vision
Control stray light in machine vision: veiling flare, ghosting, and glare, plus baffles, BBAR anti-reflection coatings, and lens-hood fixes.
-
diffraction limitSpatial Resolution in Machine Vision
Spatial resolution in machine vision: mm per pixel, minimum detectable feature size, the diffraction limit, and the Airy disk explained.
-
image circleSensor Size and Lens Compatibility
Match a lens to your sensor: image circle vs sensor diagonal, vignetting and corner shading, and relative illumination in machine vision.
-
harsh environmentsRuggedized Machine Vision Lenses
Ruggedized machine vision lenses: thermal focus stability, hydrophobic coatings, vibration resistance, and IP sealing for harsh environme...
-
850nmNIR Imaging for Machine Vision
NIR imaging for machine vision: 850nm vs 940nm illumination, bandpass filters, IR-corrected lenses, and sensor QE tradeoffs for near-infr...
-
food and beverage inspectionMachine Vision Lenses for Food & Pharma Packaging Inspection
Choose lenses for food, beverage, and pharmaceutical packaging inspection: washdown-rated optics, fill-level and label checks, and date-c...
-
electronics inspectionMachine Vision Lenses for Electronics Inspection
Choose machine vision lenses for electronics inspection: resolution and working distance for PCB, semiconductor wafer, and battery defect...
-
day night imagingLenses for Surveillance
Choose surveillance camera lenses: day/night IR-corrected optics, IR-cut switching, focal length for DORI range, and M12 vs CS-mount sele...
-
pick and placeLenses for Robotics
Choose robotics lenses by task: wide-angle for navigation and SLAM, low-distortion for pick-and-place, and depth-sensing for stereo vision.
-
defect detectionMachine Vision Lenses for Quality Inspection
Choose machine vision lenses for quality inspection by task: resolution and working distance for defect detection, gauging, and print/lab...
-
CマウントレンズLenses for Medical Imaging
Lens selection for medical imaging and device inspection: mount and sensor matching, sterilization and material constraints, and resoluti...
-
intelligent transportationLenses for Intelligent Transportation Systems
Lens selection for intelligent transportation systems: focal length and plate-pixel requirements for LPR, iris control, and day/night ima...
-
board cameraLenses for Embedded Vision
Choose lenses for embedded vision: M12 vs C-mount for board cameras, sensor and image-circle matching, and board-level integration constr...
-
drone lensesLenses for Drones
M12 lens selection for drones: GSD and focal length for mapping, low-distortion optics for inspection, and lightweight wide-angle lenses ...
-
ADASLenses for Autonomous Vehicles
Choose lenses for autonomous vehicles by camera position: ADAS forward optics, surround-view fisheye, and driver monitoring NIR lens requ...
-
chromatic aberrationLens Aberrations in Machine Vision
The lens aberrations that limit machine vision: field curvature, astigmatism, chromatic and spherical aberration, how each degrades image...
-
day night cameraIR Corrected Lenses for Machine Vision
IR corrected lenses hold focus across visible and NIR light so day/night cameras stay sharp. How IR correction works and when you need it.
-
IP ratingIP Ratings for Machine Vision Lenses
What IP67, IP68, and IP69K mean for machine vision lenses: ingress protection levels, washdown, and when a sealed or ruggedized lens is r...
-
CMOS sensorImage Sensor Selection for Machine Vision
Select a machine vision image sensor: resolution, sensor format and size, global vs rolling shutter, and how to pair the sensor with the ...
-
lens resolutionHow to Read MTF Curves
How to read MTF curves: MTF vs spatial frequency and vs field, sagittal and tangential, Nyquist matching by pixel pitch, and design vs me...
