There are many optical instruments used to analyze the properties of light or optical materials.
They include:- Autocollimator which is used to measure angular deflections;
- Densitometer for measuring the degree of darkness (the optical density) of a reflecting surface;
- Interferometer for measuring the interference properties of light waves;
- Light meter for measuring the amount of light;
- Photometer for measuring light intensity;
- Polarimeter for measuring dispersion or rotation of polarized light;
- Reflectometer for measuring the reflectivity of a surface or object;
- Refractometer for measuring refractive index of various materials, invented by Ernst Abbe;
- Spectrometer or Monochromator for generating or measuring a portion of the optical spectrum;
- Vertometer which is used to determine refractive power of lenses such as glasses and contact lenses.
Nessun commento:
Posta un commento