Precision Ronchi Rulings On Opal Glass

Ronchi ruling,we also call it Ronchi grating or Ronchi mask.

Consist of a square wave optic with constant bar and space patterns ,which with precise uniformity, spatial frequency, sharp edge definition, and high contrast ratio.

Features:

● Chrome on Opal Glass

● Resolution,Contrast,Diffraction Test of Reflective Systems

● High Tolerance±0.5um / ±1um

● Customized

Common Specifications:
Optical Density OD (Average):>3.0
Pattern Size (mm): customized
Surface Quality:40-20 or customized
Thickness (mm):1.52 ±0.100 or customized
Width (mm): customized
Note:Pattern Location is Centered
Coating:Vacuum Deposited Chrome
Dimensional Tolerance (micrometers):±0.5um / ±1um
Substrate:Opal Glass / White Ceramic
Length (mm):customized
Functions :Testing the Parameters of Resolution and Contrast, Diffraction Testing

Part Number:

Application:
A test target in the Ronchi pattern provides a precise signal for testing resolution, contrast, distortion, aberrations, and diffraction in optical imaging systems. Working line ruler is used as measuring element in length measuring tools such as comparator, length measuring machine, universal tool microscope, universal measuring machine, etc; When the linear rule is used as a positioning element in precision machine tools such as coordinate boring machines and coordinate grinding machines for measurement or positioning, it should be used together with reading microscopes, optical reading heads or photoelectric microscopes. The linear ruler film used for the tool microscope faces downward, and the scribe line is on the back of the ruler.

Manufacturing:
Ronchi rulings are typically manufactured through photolithographic deposition of metallic chromium on a substrate, which yields a precise, nearly 100% contrast pattern. For a reflective or illuminated type, dark stripes are printed on a diffusely reflecting or translucent substrate, like a white ceramic material or opal glass.
The precision of the photolithography process mainly depends on the lens precision in the photolithography machine. For example, if the accuracy of 1um is required, the corresponding lens precision need to be 1um. The accuracy meets the requirements depends entirely on the initial decision on the optical lens.

Compatible:
5 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide
10 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide
20 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide
40 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide
80 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide
100 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide
120 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide
150 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide
200 lp/mm 1" x 3", Opal Glass Ronchi Ruling Slide

How to custom a ronchi ruling target?

Calibration Target Device:

Calibration Target Factory QA&QC:

Packing and shipment: