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奥尔特光电科技有限公司
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RGB Sources
Using lasers as light sources for the primary RGB (red, green, blue) colours in imaging or projection applications give substantially improved image quality in terms of colour saturation, contrast and brightness as compared to other light sources. The RGB lasers are intensity modulated and scanned across a screen or piece of photo sensitive film to create a full colour image. Applications include digital photofinishing, film scanning and motion picture projection displays.
Printing
RGB lasers were used as light source in many applications related to printing and reprographics processes. RGB lasers, mainly at relatively low powers, are being used in laser recorders for digital photofinishing, where digitally stored images are printed on photo paper and in laser scanners for transfer of analogue film images to digital format. 473 nm and 532 nm are typically used wavelengths for the blue and green colours. Ultra-high power stability and low noise are important requirements on the lasers. Some advanced photofinishing applications require also higher power levels.
Displays
Several modulation and scanning technologies have been proposed and used for laser-based projection displays; progressive scan, line-scan using an array of diffraction elements or 2D scan using micro display devices such as DMD or LCoS chips.