Optical performance

Optical performance is a big index, it is composed of solar energy transmittance, solar reflectance, solar absorption rate, visible light transmission rate, visible light reflectance, total solar barrier rate, ultraviolet barrier rate, shielding coefficient, U-value and other small indicators.

Light on paper, plastic, glass, metal and other materials show a normal reflection, but the amount of reflection is different.

primary coverage:

1. refractive index

2. Dispersion and dispersion coefficient

3. Birefringence and very-optical refractive index

4. reflection and reflection coefficient

5. Full reflection

6. Absorption coefficient

7. Scattering

General test:

1. Self-focus of light:

A parallel intense beam enters the medium (similar to that through a convex lens).

2. Self-induction and transparency of light:

After a short pulse of strong light enters the medium, the medium hardly absorbs its energy (almost transparent).

3. Optical bistability:

After the strong light incident medium, two stable states of high or low transmission may occur.

4. Two-photon absorption:

Under strong light irradiation, the atoms or molecules of the medium absorb two photons in a transition.

5. Excized Raman scattering:

Raman scattering generated by the medium under laser irradiation.

theory model:

Unresonant oscillator model, two-level model, bond charge model, bond parameter model, charge transfer theory, anion group theory, double base structure less model.

laboratory apparatus:

Refractiometer, reflectance meter, optical system characteristic parameter tester, automatic optical detection equipment, etc.