COMPONENTS OF OPTICAL INSTRUMENTS

1. SAMPLE HOLDER

1.1. A Transparent container used to hold the sample

1.1.1. Cells, Cuvettes

2. WAVELENGTH SELECTOR

2.1. A device that isolates a restricted region of the EM spectrum used for measurement

2.1.1. Monochromators, prisms, & filters.

3. PHOTOELECTRIC TRANSDUCER

3.1. Converts the radiant energy into a useable signal

3.1.1. Radiant energy gets converted to usually electricity

4. SIGNAL PROCESSOR & READOUT

4.1. Displays the transduced signal on a readout device

4.1.1. Readout device like meter, digital readout, chart recorder, computer, etc. '

5. SOURCE

5.1. A stable source of radiant energy at the desired wavelength

5.1.1. Continuum-radiation of broad wavelength Line- radiation of specific wavelengths.