Applications and compatible instruments
For camera calibration, distortion mapping and dimensional machine vision with software that detects circle centres.
Optical Resolution Chart, R76 Dot Array
Dot-Array Calibration Target R76: For camera calibration, distortion mapping and dimensional machine vision with software that detects circle centres.
Choose by function
What it is and what it does
Circular features at defined coordinates provide centre locations for geometric image analysis. Dot diameter and centre-to-centre pitch are different specifications.
When to choose it
Match array layout and polarity to the software. Define row offsets, coordinate origin and enough image pixels per dot for stable centre estimation.
How it differs from related products
Dot arrays locate circular feature centres; checkerboards locate corners. Symmetric and offset-row arrays are different software models. Dot diameter affects detection, while centre spacing establishes the coordinate geometry.
What can be customised
Dot diameter, centre pitch, row offset, array extent, orientation marks and polarity can be selected separately.
What you receive
A glass target in the selected pattern, polarity and substrate format, with the dimensional inspection or calibration records included in the order.
Product-specific applications and pattern selection
Details of this pattern
Configuration & ordering
- Pattern reference: R76; approved artwork and revision
- Active field, scale or feature geometry and optical-plane location
- Material, outside dimensions, thickness and mounting datums
- Working instrument, illumination and viewing side
- Critical tolerances, inspection intervals and reporting needs
Inspection & acceptance
Inspect dot diameter, centre coordinates and placement error across the field; include substrate flatness where it affects calibration.
Quality & Inspection PhotolithographyWhere this product is used
Known feature positions for image scale and geometric calibration.
Selection notes
Dot-Array Calibration Target R76: For camera calibration, distortion mapping and dimensional machine vision with software that detects circle centres.
Match this artwork reference to its labelled dimensions, polarity and active field. The product image, manufacturing artwork and inspection drawing should identify the same revision.
Information for your inquiry
Artwork reference, labelled geometry, active area, substrate outline, illumination and inspection requirements.
How do I distinguish this reference from another pattern in the same family?
Use the pattern reference and its specific geometry, labels and intended measurement. A similar outline or photograph does not establish the same frequency, coordinates or reading convention.