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5. Notion of light output
The luminous efficacy of the electro-optical modulator- or valve-based projectors we've just studied (LCD, LCOS, DMD) is reasonably low, on the order of 5% for a consumer rear-projection application, for example. In this section, we explain the reasons for this situation, as well as the fundamental limitations set by the principle of the geometric extent of a light beam (see box).
Regardless of the technologies used, which have been described above, a valve-based projector consists of four more or less distinct parts:
the lighting system (§ 5.1 ...
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Notion of light output
Other projection techniques
Bibliography
References
Standardization
- EBU Standard for Chromaticity Tolerances for Studio Monitors - EBU Tech. 3213 - 8-78
- Television – 1920 × 1080 Image Sample Structure, Digital Representation and Digital Timing Reference Sequences for Multiple Picture Rates - SMPTE 274-M - 2005
- Parameter values for the HDTV standards for production and international programme exchange - ITU-R BT.709-3 - 2-98
Manufacturers
(non-exhaustive list)
These lists are not exhaustive.
Projection tubes
Hitachi
Panasonic
Toshiba
Organizations
International Commission on Illumination (CIE)
Union européenne de radio-télévision – European Broadcasting Union (EBU-UER)
Society of motion picture and television engineers (SMPTE)
...
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