Optical flat crystal

1、 Flat crystal

Made of glass or crystal, used to check the flatness of a polished mirror surface. One surface of a flat crystal is a very smooth mirror surface. When it comes into contact with the processing mirror surface, interference fringes will be generated. By measuring this interference pattern, the flatness of the processed mirror surface of the workpiece can be obtained. Suitable for detecting the flatness of measuring surfaces of gauges such as block gauges, micrometers, and feeler gauges.

Specifications

diameter	60mm made of glass	Glass 130mm
thickness	15mm	27mm
flatness	0.1μm	0.1μm

2、 Parallel flat crystal

Similar to a flat crystal, when it comes into contact with a processing mirror surface, interference fringes will be generated. By measuring these interference fringes, the flatness and parallelism of the processed mirror surface of the workpiece can be obtained. Both sides of the parallel crystal are high-precision flat mirror surfaces with high parallelism between them, suitable for detecting the flatness and parallelism of various measuring instruments' measuring surfaces.

Specifications

diameter	30mm
thickness	12mm，12.12mm，12.25mm，12.37mm
flatness	Less than 0.1 μ m
parallelism	Less than 0.2 μ m

*Please contact our company if you need higher precision flat crystals or parallel flat crystals.