Product information:

PTFE diffusers of various shapes used in optical instruments are important accessories of integrating sphere.

Purpose: calibrate whiteboard, diffuse reflector, scatterer, optical attenuator, laser focusing cavity, optical collector, integrating sphere, etc.

Operating wavelength: 250-2500 NM

Reflectivity: 97-99% (visible light)

Whiteboard is the abbreviation of standard whiteboard and reference whiteboard. It is an optical transmission standard. It is a calibrated whiteboard with spectral reflectance data provided by the National Institute of Metrology (National Bureau of standards). Users should measure the optical properties of other samples according to this data. No matter what kind of instrument you use or what method you use, all measurement data should be traced back to the standards of the National Institute of metrology. Only in this way can the measurements of various countries be comparable, effective, accurate and reliable.

Basic performance of whiteboard:

1. Standard whiteboard is made of high-quality PTFE resin pressed, sprayed or foamed. It has good strength and can be washed with water;

2. The size of the standard whiteboard is Φ 30-100mm, or 30x30100x100mm, the larger is the target;

3. The reflectance data of the whiteboard is tested by China Institute of Metrology and transmitted as the standard value; Use wavelength 250-2500nm;

4. The reflection surface of the whiteboard is an ideal Lambert diffusion surface. The reflected light in any direction obeys the cosine law;

5. Whiteboard is mainly used for optical calibration and measurement, such as light source, color, spectral analysis, etc;

6. The white board has good optical stability, never deteriorates, and is not afraid of acid, alkali and salt corrosion;

In addition, we also make gray plates with reflectivity of 30% and 60%.

The target is essentially a large whiteboard with a size of 1 × 1 ㎡ or larger, which is a large-scale test dedicated to the field. For example, aerial remote sensing test and aerial laser guidance test

Some large targets are needed for simulation tests, such as experiments, even Aerospace experiments. Due to the good diffuse reflection characteristics of the target, the incident and receiving angles in a large range

Therefore, large test targets are necessary. The base of the target is generally cloth base, which is light and easy to use. High quality surface spraying

PTFE coating has high reflectivity, good diffusion characteristics, no fear of moisture and good strength. This target is mostly used for testing in China.

The basic performance of the target is the same as that of the whiteboard, but the size is different.

Target: size 1 × 1㎡