Filters improve display readability

Paul Boughton

The most important factor for all types of electronic display is readability, which can be difficult under conditions ranging from darkness to bright sunlight.

Also, reflected light from the display can cause further viewing difficulties. Optolite optical grade filters have been developed to overcome these problems. Readability is improved by increasing the relative contrast between the lit and unlit parts of the display.
Optolite filters increase contrast by passing the wavelengths of light from the display whilst partially absorbing other wavelengths of ambient light. Selected Optolite colours are available which are matched to the transmission characteristics of the display.
The new IPL650 Plum filter absorbs the transmission of certain wavelengths of the spectrum, and transmits a sharp black and white image from a green vacuum fluorescent display.
Optolite filters are available with various grades of optional cast-in non-glare finishes. They are manufactured to customer specifications to produce either filters or display panels. The cast-in finish offers advantages in that it cannot chip, peel or rub off.

Instrument Plastics Ltd is based in Maidenhead, Berkshire, UK. " target="_blank">