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These Bullseye *" apodizing filters are a part of the Bullseye ٙ apodizier line of customizable gradient filters. The Bullseye apodizing filters are used to eliminate undesirable intensity variations in optical systems. The density of the filter can either decrease or increase radially from dark to light or from light to dark.

The density of the Bullseyetm apodizing filter decreases radially from a dark center, where light is usually at its peak intensity, to the outside edge, where it can become completely transparent.

The density of the Bullseyetm apodizing filter can also increase in the radial direction from a light center to the outside edge towards the center.

Bullseye Apodizing filter coatings are produced on a custom basis since uniformity variations are a function of the customers optical configurations. The Bullseye apodizing filter can also be supplied as an inverse apodizing configuration. That is, the density increases from the center to the outside edge.

The Bullseyeٙ apodizing filter can be designed for any Gaussian function regardless to the size of the beam. The filters are produced on a custom basis, as uniformity variations, substrate type, and bandwidth are a function of the customer's specific optical requirement.

 Density gradients can be customized to suit any application

Օ The filter can be applied to a number of different substrate types

 Can be designed to be used from the UV to the Far IR.

Inserting a Bullseyeՙ apodizing filter at the aperture stop of your imaging system modifies the intensity variations of your light source which can result in a flat top distribution. "Instead of spending effort searching for ideal light sources for your specific application, a Bullseye ND filter can be used to solve basic light distribution problems, saving both time and money" says Forrest Reynard, President of Reynard Corporation.

ٕ Entertainment - To make light distribution uneven for cosmetic applications.

 Imaging - To break up diffraction patterns by the introduction of soft edges.

Օ Industrial - To control the light emission from an automatic welding torch to a CCD camera. The filter is used in series with an iris in camera to eliminate detector saturation so that the welding operation can be viewed real time.

 Military - To eliminate IR detector saturation in ground-to-air and air-to-air missiles.

Օ Scientific - Used as a variable phase plate when the gradient coating material has the same index of refraction as the substrate.

 Semiconductor - Used in photolithography exposing systems to obtain perfect illumination distribution.

Product Number R01400-00 R01450-00

Product Name Bullseye Apodizing Filters: Clear in the Center Bullseye Apodizing Filters: Dark in the Center

Outside Diameter Thickness of Substrate value value