Optics / Photonics 101

What is Radiation?

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.

25 Sep 2014

What is the Visible Spectrum?

Visible spectrum, radio waves, ultraviolet rays, x-rays, gamma-rays, microwaves and infrared light are various electromagnetic radiations that belong to the electromagnetic spectrum.

23 Sep 2014

What is a Lumen?

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.

22 Sep 2014

Scattering

Scattering is a basic physical process that involves any one type of radiation, such as light, sound, or moving particles.

19 Sep 2014

Telecentric Lenses and Their Application

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.

19 Sep 2014

What is Transparency?

In optics, transparency, also referred to as pellucidity or diaphaneity, is the physical property of allowing light to pass via the material without being scattered.

19 Sep 2014

Beam Divergence

Beam divergence of an electromagnetic beam is defined as a measure of increase in laser beam diameter or radius with respect to the distance from an antenna aperture or optical aperture through which the beam emerges.

19 Sep 2014

Meniscus Lens and Their Application

Meniscus lens is a lens having two spherical curved surfaces, convex on one side and concave on the other side. It is thicker at the center than at the edges. The lens provides a smaller beam diameter in order to reduce the beam waste and spherical aberration.

19 Sep 2014