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Fresnel Lenses

Positive Fresnel Lenses - A positive Fresnel lens can be designed as a collimator, collector or with finite conjugates. Fresnel lenses are usually corrected for spherical aberrations. These lenses can be metalized for use as second surface mirrors.

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Negative Fresnel Lenses - Negative Fresnel lenses have diverging light and are typically mirror images of positive Fresnel lenses. Any positive Fresnel lens design can be used to manufacture negative lenses, or custom designs are available. These lenses may also be metalized for use as first surface mirrors.

Symtech Lenses
Rear Projection TV using Fresnel lenses in the light engine and screen systems

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