When to review telecentric lenses.
The Telecentric Lenses route fits dimensional inspection, edge measurement, low-distortion calibration projects. Use telecentric optics when perspective error changes the result.
Product route
Telecentric Lenses
Telecentric optical routes for precision measurement, low-distortion edge capture and repeatable gauge-style inspection.
Measurement changes because part height, placement or perspective changes the apparent edgeConfirm FOV, WD, sensor size, magnification, tolerance and allowable distortionStandard telecentric for stable measurement
Confirm these before model selection.
Low distortion, Measurement optics, Stable edge capture are only the starting point. Also confirm field of view, working distance, line speed, interface, trigger timing and mounting limits.
Send evidence before asking for a part number.
Share sample images, good and bad parts, current reference model, target defect, tolerance, production speed and available fixture space.
Use these limits before locking a model.
- Do not lock a model before sample images, line speed and target tolerance are available.
- Do not treat the component as a standalone purchase when lighting, optics, fixture or trigger constraints are still unknown.
- Do not assume a reference brand or catalog model proves production-line acceptance.
Send route evidence before asking for a final part number.
- Part photos or short line video
- Good and bad sample examples
- Target feature size or tolerance
- Field of view and working distance
- Line speed, trigger and interface needs
When this route is a good fit
Use telecentric lenses when perspective error breaks measurement; Deyi reviews 6 inputs across FOV, WD, sensor size, tolerance, distortion and lighting.
Use this route when the project matches these constraints.
- Use when
- Measurement changes because part height, placement or perspective changes the apparent edge.
- Core numbers
- Confirm FOV, WD, sensor size, magnification, tolerance and allowable distortion.
- Route split
- Standard telecentric for stable measurement; bi-telecentric when image-side error also matters.
Do not quote this route before these checks are clear.
- Do not choose telecentric optics only because the part is small; use them when perspective error affects the result.
- Do not quote without fixture and lighting assumptions because edge quality decides measurement repeatability.
- Do not ignore sensor format and magnification when matching a telecentric lens.
Swipe horizontally to compare buyer situation, inspection constraint, recommended route and what to send.
| Buyer situation | Inspection constraint | Recommended route | What to send |
|---|---|---|---|
| Measurement lens review for low-perspective-error inspection | Telecentric measurement RFQ | Measurement lens route for low-perspective-error inspection. | Send object size, sensor size, WD, tolerance and edge definition needs. |
| Object-side and image-side telecentric review for stricter measurement stability | Bi-telecentric route review | Object-side and image-side telecentric route for stricter measurement stability. | Confirm magnification, sensor format, tolerance and calibration method. |
| Object-space telecentric review when part height variation changes apparent size | Object-space telecentric review | Object-space telecentric route when part height variation changes apparent size. | Provide part thickness range, depth variation and measurement feature. |
| Engineering review matched to measurement tolerance and field size | Measurement optics supplier review | Engineering route matched to measurement tolerance and field size. | Send drawing, tolerance table, FOV, WD and camera model reference. |
How buyers should compare this route
Build the product route around the inspection target, not the catalog model.
Use telecentric lenses when the inspection evidence matches the route.
Telecentric Lenses should be evaluated when the project is tied to dimensional inspection, edge measurement, low-distortion calibration. A useful review starts from the part behavior, target feature, motion condition and current failure mode, then maps those limits to the right component family instead of forcing one catalog model.
- Dimensional inspection
- Edge measurement
- Low-distortion calibration
Compare constraints, not only specifications.
Use telecentric lenses selection as a system decision: lens, lighting, fixture, trigger, interface and software all affect repeatability. The safest shortlist is created only after sample images, line speed and output constraints are reviewed together.
- Use telecentric optics when perspective error changes the result.
- Confirm field of view, working distance and sensor size together.
- Review lighting and fixture stability before locking the lens route.
What engineering should confirm first
Four checks before locking the telecentric lenses route.
This workflow keeps the RFQ focused on the real inspection constraint and reduces the risk of buying a component that works on paper but fails under production lighting, motion or fixture variation.
- Define the inspection target State the defect, code, edge, height, presence check or measurement result that must be accepted or rejected.
- Lock optical and mechanical constraints Confirm field of view, working distance, mounting space, part motion, fixture stability and available light geometry.
- Match the component route Review telecentric lenses with related lenses, lighting, controllers, I/O and software rather than selecting one part number in isolation.
- Validate with samples Use good parts, bad parts and edge-case samples to confirm contrast, repeatability, read rate or measurement stability before purchase.
Reviewed selection basis
Review model data, buyer constraints and acceptance risk before RFQ lock.
Manufacturer seriesTelecentric lens series Selection basisCHIOPT telecentric and measurement lens route Model routeDeyi-supported model route Buyer reference modelMoritex / Edmund Optics / Keyence
What changes the route, cost and delivery review.
- Application route
- Dimensional inspection, Edge measurement, Low-distortion calibration
- Hardware scope
- Low distortion, Measurement optics, Stable edge capture
- Buyer reference model
- Moritex / Edmund Optics / Keyence
Common use cases
Common reasons product selection goes wrong.
- Choosing by resolution, catalog size or brand reference before defining the inspection target.
- Ignoring lighting, lens, fixture or trigger limits that decide whether the component can repeat on the production line.
- Requesting a quote without good/bad sample images, line speed, target tolerance or the current failure mode.
Evidence that helps engineering reply faster.
Part photos or short line videoGood and bad sample examplesTarget feature size or toleranceField of view and working distanceLine speed, trigger and interface needsCurrent model, competitor reference or failure mode
Related solution routes
Connect this product family to an inspection problem.
Solution
Automated Visual Inspection
Build automated visual inspection systems for defect detection, presence checks, surface inspection, orientation, measurement and repeatable pass/fail output.
SolutionVision Inspection System
Plan a complete vision inspection system for defect checks, presence, measurement, barcode reading and pass/fail output.
Application case briefs
See how this product family appears in real inspection scenarios.
Electronics inspection
PCB Connector Pin Presence Inspection
Application brief for checking connector pin presence, orientation and bent-pin risk with camera, lens and controlled lighting.
Dimension measurementStamped Part Instant Measurement
Application route for fast dimensional checks on stamped, machined or molded parts using instant measuring systems.
Automotive parts inspectionAutomotive Metal Surface Defect Inspection
Application route for scratches, burrs, dents and reflective metal surface checks using lighting-first machine vision selection.
Related buying guides
Use these guides to validate the product route before RFQ.
Resource
What Is a Telecentric Lens?
Decide when telecentric optics are justified by measurement tolerance, part height variation and fixture repeatability.
ResourceTelecentric Lens Basics
Learn what telecentric lenses do, when they improve measurement repeatability and when regular machine vision lenses are enough.
ResourceTelecentric Lens vs Regular Lens
Compare telecentric and regular machine vision lenses by perspective error, measurement tolerance, working distance, field of view and budget tradeoff.
ResourceMachine Vision Lens Selection Guide
Select machine vision lenses by field of view, sensor size, working distance, aperture, distortion, resolution and whether the task needs telecentric measurement stability.
Reference alternatives
Compare this product family against reference-model requirements.
Compare
Baumer Vision Camera Alternative
Review Baumer-style vision camera requirements before selecting resolution, interface, lens and lighting route.
CompareKeyence Vision System Alternative
A neutral selection guide for teams comparing Keyence-style integrated vision systems with component-level inspection routes.
CompareLMI 3D Vision Alternative
Plan a 3D vision route for height, profile, weld, gap and geometry inspection before choosing a sensor family.
CompareHikrobot Machine Vision Alternative
Review Hikrobot-style camera, lens, lighting and barcode requirements against a factory-direct component route.
Product RFQ
Need help selecting telecentric lenses?
Send working distance, target size, speed, defect type, competitor model or sample images before locking a part number.
Request engineering RFQProduct FAQ
Common questions before selecting telecentric lenses.
How do I confirm whether telecentric lenses fit my project?
Start with the inspection goal, field of view, working distance, line speed and target tolerance. Then match telecentric lenses with lens, lighting, mounting and I/O requirements instead of choosing by part number alone.
What information improves telecentric lenses selection accuracy?
Send good and bad sample images, target feature size, field of view, working distance, speed, trigger method, interface requirement and any current reference model. That lets engineering confirm whether telecentric lens is the right route or whether another product family is safer.
When should I avoid selecting telecentric lenses by catalog specs only?
Avoid catalog-only selection when the part is reflective, moving quickly, tolerance-sensitive, space-limited or already failing under manual inspection. In those cases, lighting, lens, fixture and software behavior often matter as much as the component specification.
What information should I send before requesting a machine vision quote?
Send part photos or drawings, target defect or measurement goal, field of view, working distance, line speed, accuracy target, lighting limits and any current camera, lens, light, barcode reader or competitor model.
Do I need a 2D or 3D machine vision system?
Use 2D when contrast, edges, labels or position are enough to judge the part. Use 3D when height, profile, gap, volume, weld shape or surface geometry decides pass or fail.
How should I choose machine vision lighting?
Start from the defect and material surface instead of the camera model. Backlight helps edge measurement, coaxial and dome lighting help reflective surfaces, and bar or ring lighting often works for general presence and defect checks.