Application range of fully automatic refractive index measuring instrument:

Measurement of refractive index of optical glass and artificial crystals.

Technical specifications:

System composition：

● High precision rotary encoder;

● Digital angle display with RS232 interface;

● Reflective collimator with high-resolution CCD（accuracyλ/10，diameter50mm,focal length300mm）；

● Photoelectric autocollimator, resolution 0.01 seconds, repeatability+/-0.2 seconds;

● PbS detector and UV detector,Installed on a reflective telescope,Using mirrors to select detectors;

● Equipped with5Lamp chambers with spectral line lamps and filters (wavelengths: 2325.4nm, 1970.1nm, 1529.6nm, 1013.9nm, 852.1nm, 766.5nm, 706.5nm, 643.8nm, 632.8nm, 589.3nm, 587.5nm, respectively), 546.1nm,479.9nm,435.8nm,404.6nm,365.1nm,326.1nm,313.0nm,253.7nm）；

● Ultra high precisionUltra high precision pneumatic bearings,Radial and axial accuracy better than0.05µm；

● The airflow control device includes：Air filter,Pressure controller， Interface for connecting compressed air pump or other gas sources;

● Two axis adjustable tilt worktable and micrometer level rotation adjustment;

● Fiber optic lighting source;

● 32-bit image capture card, software (Windows/NT)Including functions for prisms, optical wedges, and tilt measurements.

Measurement principle:

By measuring the refractive angle of the prism, the refractive index of the optical material is determined. The reflective mirror type parallel light tube is installed on a pneumatic bearing and utilizes a tilted rotating toolFind the refraction angle using the principle of small refraction and the workbench. Then calculate the refractive index