Polarization of a light wave is defined as a type of orientation of oscillations of the wave with respect to the direction of propagation of the wave.
A Lambertian surface for reflection is a surface that appears uniformly bright from all directions of view and reflects the entire incident light. Lambertian reflectance is the property exhibited by an ideal matte or diffusely reflecting surface.
An aperture is an opening or a hole through which light passes by. In an optical system, the aperture is the opening that defines the cone angle of a set of light rays that converges at a focal point in an image plane.
Four-wave mixing (FWM) is a non-linear optical process where two other waves are produced by the interaction of two wavelengths. Four-wave mixing can take place in any kind of material.
The principal planes are two hypothetical planes found in a lens system at which all the refraction is deemed to occur. The position of the principal planes are fixed and do not depend upon the position of the object
Radiation is a phenomenon wherein energy is propagated and emitted in the form of electromagnetic waves. Radiation consists of different types of waves - water waves, sound waves, light waves, and heat waves.
Visible spectrum, radio waves, ultraviolet rays, x-rays, gamma-rays, microwaves and infrared light are various electromagnetic radiations that belong to the electromagnetic spectrum.
A lumen is as a unit of measurement indicating the level of brightness emitted from lighting products such as bulbs and tubes, and natural light.
Refraction is a phenomenon that happens when waves passing from one transparent medium to another bend at the boundary between the two mediums.
By Ben Arnold
19 Sep 2014
Telecentric lens is a compound lens used in imaging systems to make objects appear to be the same size independent of their location in space.