Definition that contains optical device
- finder optical device that helps a user to find the target of interest
- prism optical device having a triangular shape and made of glass or quartz; used to deviate a beam or invert an image
- grating optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum
- viewfinder optical device that helps a user to find the target of interest
- diffusor optical device that distributes the light of a lamp evenly
- diffuser optical device that distributes the light of a lamp evenly
- view finder optical device that helps a user to find the target of interest
- wollaston prism optical device that produces plane-polarized ultraviolet light
- collimator optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam
- coelostat optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror