Holographic Diffusers

Although diffuse lighting is preferable for many illumination applications, the light loss associated with common types of diffusing materials is sometimes a design obstacle. Standard ground glass and opal glass will produce diffuse illumination, but the diffuse light area will often exceed the requirements of the system. This over-illumination, associated with traditional diffusers, reduces efficiency and can often lead to added costs by requiring higher power illumination sources, lenses, and possibly filters. Holographic diffusers can be used to control the diffuse area of illumination and increase transmission efficiency to greater than 90% from filament lamps, LEDs, arc lamps, and other sources. It is important to note that diffusing angles are given for a collimated input beam and angular divergence will vary for different incidence angles. Unlike many holographic elements, the polycarbonate components listed below can be used throughout the visible and near infrared. Available individually, as umounted sheets, or in sets of four filters. Also available for the Ultraviolet range.

Cleaning Procedures: De-ionized water rinse, followed by a forced air drying. Wipe gently with lens tissue soaked with methanol, followed with a forced clean air or nitrogen drying.

Solvent Resistance: Holographic diffusers are resistant to methanol and methylene chloride.