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Displags nB,.us
Filters for contrast e ummm ent A range of optical grade acrylic illtars, which provide a high degree of contrast enhancement for emissive devices, has been launched. Christened 'Chromalite', the filters are available as standard 300 mm × 200 rnrn panels or in nonstandard sizes, and in a variety of thicknesses. Typical of the range is Chromalite 13, a red, high contrast enhancement acrylic available in l.Smm thickness. It is precoated with the company's anti-glare coating,
Grovecote, and is supplied covered with a protective sheet. It is suitable for standard or high efficiency, red LEDs, while the low-cost panel rates allow engineers to test economically the filter before specifying it for production. The filters are designed to accept not only traditional LEDs and CRTs, but also the new generation of optoelectronic technology, with special grades suitable for vacuum fluorescent, incandescent and plasma devices.
Ht
activated, turns transparent to light. By placing a light source behind, the I,CD gives a clear, positive display that can be easily read from a wide angle and in the most all.cult conditions. The secret of the display is a black dye with very high light absorption qualities that eliminates
mmmmt
A liqu/d crystal display with contrast as high as 2B:I is available from Epsom The 'black shutter' display based on gnest-host design principles, consists of a normally black opaque LCD panel which, when
Epson's "black shutter" LCD has up to 25:1 contrast
176
The filters are available in a wide range of colours, including standard and high density reds, greys, clear and greens, or to special order in any possible colours or colour combinations. Each grade has the best possible transmission characteristics for its preferred style of light emitting device -- combining maximum readAhiliW with reduced ambient light reflection. The filters also conceal unattractive drive circuitry and mounting hardware. O~venor V ~ M//mead /ndusm~ Centre, M_/2/Mead Road, Ferry Lane, To~erdmm, London N17
90T, VE
the need for two polarizers. Normal twisted nematic LCDs often cannot b e read from an oblique angle, from a distance, or in other than ideal light conditions. Black Shutter is available in two versions. The first is designed to meet the requirements of the automotive industry and is suitable for use in temperatures between -30°C and +800C. The secovJ:[ system is suitable for use in consumer goods such as cookers, washing machines, clocks and office automarion equipment, and has art application range between -10°C and +60°C. Because of the ease with which the display can be read under all cox=ia~=, ~ sen= it as havi.ng enormous ~ for applications such as ~ time clocks at sports centres, and for airport and railway departure displays. The I,CD is also seen as having application for shutten= in photo~mmunetric and Epson ( ~ 9 L/m/toct D o r ~ d House, 388 High Road, Wembley, HA9 6UH, rJE. Telephone: 01-902 8892
DISPLAYS, JULY 1985
Filters for contrast e ummm ent A range of optical grade acrylic illtars, which provide a high degree of contrast enhancement for emissive devices, has been launched. Christened 'Chromalite', the filters are available as standard 300 mm × 200 rnrn panels or in nonstandard sizes, and in a variety of thicknesses. Typical of the range is Chromalite 13, a red, high contrast enhancement acrylic available in l.Smm thickness. It is precoated with the company's anti-glare coating,
Grovecote, and is supplied covered with a protective sheet. It is suitable for standard or high efficiency, red LEDs, while the low-cost panel rates allow engineers to test economically the filter before specifying it for production. The filters are designed to accept not only traditional LEDs and CRTs, but also the new generation of optoelectronic technology, with special grades suitable for vacuum fluorescent, incandescent and plasma devices.
Ht
activated, turns transparent to light. By placing a light source behind, the I,CD gives a clear, positive display that can be easily read from a wide angle and in the most all.cult conditions. The secret of the display is a black dye with very high light absorption qualities that eliminates
mmmmt
A liqu/d crystal display with contrast as high as 2B:I is available from Epsom The 'black shutter' display based on gnest-host design principles, consists of a normally black opaque LCD panel which, when
Epson's "black shutter" LCD has up to 25:1 contrast
176
The filters are available in a wide range of colours, including standard and high density reds, greys, clear and greens, or to special order in any possible colours or colour combinations. Each grade has the best possible transmission characteristics for its preferred style of light emitting device -- combining maximum readAhiliW with reduced ambient light reflection. The filters also conceal unattractive drive circuitry and mounting hardware. O~venor V ~ M//mead /ndusm~ Centre, M_/2/Mead Road, Ferry Lane, To~erdmm, London N17
90T, VE
the need for two polarizers. Normal twisted nematic LCDs often cannot b e read from an oblique angle, from a distance, or in other than ideal light conditions. Black Shutter is available in two versions. The first is designed to meet the requirements of the automotive industry and is suitable for use in temperatures between -30°C and +800C. The secovJ:[ system is suitable for use in consumer goods such as cookers, washing machines, clocks and office automarion equipment, and has art application range between -10°C and +60°C. Because of the ease with which the display can be read under all cox=ia~=, ~ sen= it as havi.ng enormous ~ for applications such as ~ time clocks at sports centres, and for airport and railway departure displays. The I,CD is also seen as having application for shutten= in photo~mmunetric and Epson ( ~ 9 L/m/toct D o r ~ d House, 388 High Road, Wembley, HA9 6UH, rJE. Telephone: 01-902 8892
DISPLAYS, JULY 1985