OPTICAL COMPONENTS ON STEM

Narrow frequency-range optical filters for filtering out light of a specific wavelength from a spectrum featuring multiple wavelengths or for making a nearly mono-chromatic light source from a continuous spectrum. Diameter: 40 mm Thickness ... more

Retardation plate (λ/4 platelet) made of plastic foil, rotatable on a ball-bearing in a holder on a stem. With an angle scale possessing 1° increments. Aperture:                    ... more