Projectors receive data from a computer or video source and project this data onto a screen via internal light sources, power sources and converters

Fresnel lenses resemble a planoconvex or planoconcave lens that is cut into narrow rings and flattened.

Video camera lenses attach to video cameras for use in machine vision, quality monitoring, security, and remote monitoring for industrial and commercial operations.

Spherical lenses, also known as singlets, are transparent optical components consisting of one or more pieces of optical glass with surfaces so curved that they serve to converge or diverge the transmitted rays from an object, thus forming a real or virtual image of that object.

Projection lamps use a built-in reflector to concentrate light in a particular direction.

Lamps are light sources that emit incoherent light for illumination.

Antennas are structures or devices used to collect or radiate electromagnetic waves.