Deyi Vision Machine Vision Engineering Request RFQ

Selection guide

What Is a Telecentric Lens?

Understand when telecentric lenses are required for repeatable measurement and when standard lenses are enough.

Key takeaways

What this page should help engineering teams decide.

  • Telecentric lenses reduce perspective error.
  • They are valuable for measurement, not every inspection.
  • Object size, sensor size and working distance must align.

Guide to RFQ

Have a real part, sample image or production constraint?

Use the guide to frame the question, then send the details so engineering can recommend a route.

Request engineering RFQ

Guide FAQ

Questions related to what is a telecentric lens?.

Ask engineering
How should I use this what is a telecentric lens? guide before RFQ?

Use it to collect the application constraints before asking for hardware: target part, defect or measurement, line speed, field of view, working distance, lighting limits and any current reference model.

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.

Can Deyi Vision support projects that reference Keyence, Cognex or other brand routes?

Deyi Vision is not affiliated with those brands. As a factory-direct machine vision source, we can map the inspection goal, model reference and production route to a component-level camera, lens, light, reader or smart-camera selection.