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Optical & Industrial Glass Suppliers

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Contrast Enhancement Filters

Product Information
Contrast Enhancement Filters are used primarily for display applications.

From the early development of monochromatic Contrast Enhancement Filters, which exhibit a single-peak transmission point in the green portion of the spectrum, to more recent developments in multi-peak full-color filters, each of these glasses has been developed to accept standard conductive and anti-reflection coatings to optimize transmission and reduce glare.

Applications
Contrast Enhancement filters are utilized with many types of display technologies, including CRT, AMLCD, FED and Flat Panel displays. Their uses encompass military, commercial, and industrial display applications as they selectively transmit the wavelengths of light emitted from the display device. This allows for greater clarity and, in full color displays, true color rendition, by filtering out extraneous wavelengths. Examples of such uses range from automotive to aircraft and include displays in industrial production lines, medical displays, informational data displays, Point of Purchase terminals, and more.

Materials
Monochromatic Contrast Enhancement Filters allow green light transmission, whilst suppressing other wavelengths, providing optimum viewing of monochrome displays.
Full-color filter glasses permit transmission in the red, blue and green while reducing transmission at other intermediate wavelengths

Forms of Supply
Contrast enhancement filters are supplied only in polished form and can be configured to your needs.  

Specifications
Data sheets are available on request.

Quality Assurance
All filters to assure exacting quality. The maximum size of permitted inclusions (bubbles, seeds, stones, etc.) is 0.4 mm. Inclusions are measured as the average of the maximum length and width (L+W)/2. The sum of the diameters of all inclusions may not exceed twice the diameter of the maximum allowable size per filter. Inspection of filters is made for scratches using stringent military specification MIL-O-13830 and 60-40 scratch-dig criteria. No striae may be visible to the naked eye; all filters meet or exceed the striae grade A requirements of MIL-G-174B. Maximum strain may not exceed 80nm/cm, measured as a strain-induced birefringence. Each of these glasses has been developed to accept standard conductive and anti-reflection coatings to optimize transmission and reduce glare.