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Standard components for optical control

1. Reflective elements
The image formed by a plane reflecting object on a plane mirror appears behind the mirror. The exact position of the image is determined by the trajectory of the light.

The elliptical reflection ellipse has two foci. If the light source is placed at one of the foci, all the reflected light will pass through the other foci. This feature is useful when directing light to the projector's aperture or film gate.

Sharp-cut Reflectors of tubular light sources. Some applications require minimizing glare and must cut off the upper part of the beam.

2. Transmissive elements
Prisms Prism systems or prism mirrors are designed for special purposes. A single prism can be used for refraction or both reflection and refraction.

Lenses Convex lenses provide a narrow beam of light and are particularly useful where more than one beam is required.

Diffuser and light controller The diffuser is made of milky white material and is used to increase the reflective area of the lamp to reduce brightness and improve appearance. In order to achieve appropriate and uniform brightness on the diffuser surface, there must be sufficient distance between the light source and the diffuser. At the same time, the milky white material must have a large enough diffusion effect (this diffusion effect usually increases with the transmittance). decrease and increase). Diffusers for fluorescent lamps are generally extruded, and the opalescent surface can be made into a reed shape to increase the appearance, or it can be made into a clear pattern base to reduce glare.

Diffusers are composed of prisms or lenses that provide more precise optical control than a diffuser can achieve.