Check orientation and symbol reproduction
Defined characters show whether an optical path reverses, mirrors or rotates an image. Repeated symbol sizes can support a consistent visual legibility check.
Check image orientation and guiding referencesCharacter Comparison Reticles
Reference letters, numerals and symbols provide visible character forms within an inspection magnifier. Character height and stroke width are separate dimensions.
Configuration and materials
Specify optical glass or fused silica, overall dimensions, thickness, pattern-side orientation and the clear aperture. Define transmission, reflectance or optical density at the working wavelength when optical contrast is critical.
- 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
From the pattern to a measurement
Define the feature being compared
Character height, stroke width and spacing describe different aspects of reproduction. A letter pattern does not produce an MTF curve; quantitative resolution testing needs the corresponding target and analysis method.
Optical references in measuring instrumentsChoose by function
What it is and what it does
Reference letters, numerals and symbols provide visible character forms within an inspection magnifier. Character height and stroke width are separate dimensions.
When to choose it
Use known characters to check symbol reproduction, orientation and readability at the intended magnification. Use a dedicated resolution chart for a frequency-based result.
How it differs from related products
Character patterns compare reproduction of defined symbols or inspect image orientation. They do not provide a line-pair resolution value or physical length scale unless those features are separately built into the layout.
What can be customised
Line geometry, graduations, labels, field diameter, substrate thickness and mounting outline can be matched to the instrument. Contrast and line density should allow the reference and the specimen to remain visible together.
What you receive
A patterned glass reference component with the selected graduations, outline and mounting dimensions, accompanied by the specified inspection records.
Where this product is used
Character Comparison Reticles for microscope measurement and optical inspection. Compare pattern layouts and choose the configuration for your instrument.
Pattern and format options
M6T85
- The image shows uppercase letters, numerals and punctuation for comparison of fine markings. Identify character height and stroke width separately.
Related pattern choices
Selection notes
Character comparison reticles supply letters, numbers or symbols as optical references for shape and legibility inspection.
Approve final glyph outlines, actual dimensions, line widths and orientation. Keep artwork and inspected character versions aligned.
Information for your inquiry
Vector glyphs, actual character height, stroke width, spacing, polarity, viewing direction and substrate.
Is the font name sufficient?
Also provide the final outlines or vector artwork, physical size and revision so the manufactured characters match the intended comparison.