In brief

Agree acceptance against the defined visible decisions and representative good, bad and marginal parts. Record false accepts and false rejects separately, together with uncertain or unavailable results, tested viewing conditions and any surfaces or variants outside demonstrated coverage. Use the agreed defect definitions as the reference for the expected decisions.

For in-line inspection of transparent components, describe the realistic range and how changes in false-accept, false-reject and challenge criteria affect the result you need.

On the production floor

Turn your production information into clearer decisions — Transparent Part Inspection

Plan transparent part inspection around representative good, bad and marginal samples, line presentation, lighting, reject handling and challenge criteria. Discuss an optical feasibility trial with Oxford Vision Systems. Use this guide to resolve false-accept, false-reject and challenge criteria before it limits the final system.

Discuss your application
What to record

False-Accept, False-Reject and Challenge Criteria: condition, range and effect on your process

Current condition

For each challenge, retain the expected decision, sample identity, presentation, inspection settings and observed result. Record the agreed repetitions and the response to a result outside the accepted range. Review the line response as well as the image decision; a successful sample does not prove untested conditions.

Realistic range

Include the agreed part references and normal appearance variation, then challenge samples near the rejection boundary under the intended presentation and timing range. List any missing samples, untested regions or unresolved results alongside the findings.

Effect on the system

Record a defective sample accepted as a false accept and an acceptable sample rejected as a false reject. Keep the tested sample counts and repetitions with each category. Record uncertain or unavailable results separately and agree who decides their disposition.

Before you contact us

Five questions about false-accept, false-reject and challenge criteria for your application

  1. Who can confirm this information?Identify the person responsible for false-accept, false-reject and challenge criteria in production, quality, engineering or operations.
  2. How representative is the sample?Include age, supplier, batch, environment and upstream process state where they affect transparent part inspection.
  3. What is the difficult condition?Challenge the acceptable and defective samples most easily confused under the agreed viewing conditions. Include relevant normal variation and record cases where a required region is obscured or the result cannot be assigned confidently.
  4. How will you judge the result?Agree the method, repetitions, acceptable range, result record and the response if the observed result falls outside the agreed range.
  5. What else must be coordinated?Your final transparent part inspection scope must also account for recipe, reject and line-control interfaces, false-accept, false-reject and challenge criteria, current regulations and the conditions at your site.
Connected details

Review false-accept, false-reject and challenge criteria as part of the complete system

Question 1

Visible Defect or Measurement Definition for Inspection of Transparent Components

For Transparent Part Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for visible defect or measurement definition for inspection of transparent components. That lets us compare options against your real production rather than one nominal value.

Question 2

Good, Bad and Marginal Sample Range

For Transparent Part Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for good, bad and marginal sample range. That lets us compare options against your real production rather than one nominal value.

Question 3

Part Presentation and Production Speed

For Transparent Part Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for part presentation and production speed. That lets us compare options against your real production rather than one nominal value.

Question 4

Optics, Lighting and Environmental Conditions

For Transparent Part Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for optics, lighting and environmental conditions. That lets us compare options against your real production rather than one nominal value.

Question 5

Recipe, Reject and Line-Control Interfaces

For Transparent Part Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for recipe, reject and line-control interfaces. That lets us compare options against your real production rather than one nominal value.

Question 6

False-Accept, False-Reject and Challenge Criteria

For Transparent Part Inspection Challenge-test checklist, describe the current position, required outcome, acceptable limits and known exceptions for false-accept, false-reject and challenge criteria. That lets us compare options against your real production rather than one nominal value.