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SCHOTT North America
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Contrast Enhancement Filters
Product Information
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Contrast enhancement filters selectively transmit the wavelengths of light emitted from the display device and filters out extraneous wavelengths of light, thereby rendering displays of greater clarity, and in full color displays, true color rendition.
The monochromatic contrast enhancement filters allow green light transmission, while suppressing other wavelengths, providing optimum view-ability of monochrome displays. The full-color filter glasses permit transmission in the red, blue, and green wavelengths while reducing transmission at other intermediate wavelengths. Each of our glasses is developed, melted and finished to exacting customer specification at our state-of-the-art melting facility in Pennsylvania.
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Benefits
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SCHOTT Advanced Optics can supply coated and uncoated contrast enhancement filters. By selectively transmitting wavelengths of light from the display device and filtering the extraneous wavelengths, the display applications can achieve greater clarity and, in full color displays, true color rendition.
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Key Applications
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The benefits of these filters are best realized in any display applications (both CRT and flat panel displays) that operates in high ambient light environment. These include:
- Military applications such as military avionics displays,
- Industrial display uses such as:
- Industrial production lines
- Information
- Data displays
- Commercial uses such as commercial avionics displays and point of purchase terminals
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Forms of Supply
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Contrast enhancement filters can be supplied as edged, ground and polished substrates.
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Specifications
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The following pages contain standard specifications for each glass type as of the date of printing. Please contact our sales representatives for additional size, delivery and pricing information.
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Contrast Enhancement Filter_S8801
DatasheetContrast Enhancement Filter_S8802
DatasheetContrast Enhancement Filter_8806A
DatasheetContrast Enhancement Filter_S8807
DatasheetContrast Enhancement Filter_S8808
DatasheetContrast Enhancement Filter_S8008G
DatasheetContrast Enhancement Filter_S8809
Datasheet
Quality Assurance
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We inspect all filters to assure exacting quality. The maximum size of permitted inclusions (bubbles, seeds, stones, etc.) is 0.4 mm. We measure inclusions as the average of the maximum length and width. The sum of the diameters of all inclusions may not exceed twice the diameter of the maximum allowable size per filter.
We inspect our filters for scratches using stringent military specification MIL-O-13830 and the 60-40 scratch dig criteria. No striae may be visible to the unaided eye; all filters meet or exceed the striae grade A requirements of MIL-G-174B.
Maximum strain may not exceed 80nm/cm, measured as strain-induced birefringence. Each of these glasses has been developed to accept standard conductive and anti-reflection coatings to optimize transmission and reduce glare.
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