primary light source

primary light source

1. A source in which light is produced directly from a transformation of energy.
2. The principal, or most obvious, source of light when several sources of light are present.
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By isolating and tightly shielding the primary light source, dust intrusion is reduced, thus ensuring worry-free performance in any environment.
Krause's 'Sfumato' series differs from conventional portraiture with the primary light source coming from behind the subject, creating a dramatic effect where principal features are cast in shadows, while secondary facial features are highlighted.
If you turn on your camera's flash, the camera will, by default, set the color balance for about 5,500K, expecting the flash to be the primary light source.
The greatest challenge to using daylight as a primary light source is that it is naturally dynamic.
Using LEDs as its primary light source, the 3D LED televisions all feature ultra-high contrast ratios as well as slim depths that allow for more artful designs, plus increased energy savings.
Each using LEDs as their primary light source, the televisions all feature ultra-high contrast ratios as well as slim depths that allow for more artful designs, in addition to increased energy savings.
These cutting-edge TVs use LEDs as their primary light source, rather than traditional Cold Cathode Fluorescent Lamps (CCFL).
Samsung's new 8000, 7000 and 6000 Series of flat screen TVs use LEDs as their primary light source, rather than traditional Cold Cathode Fluorescent Lamps (CCFL).
Daylight is the primary light source throughout the building, brought in through roof monitors, clerestories, light shelves and high performance glass.
For example, OptiMax simulates not only the primary light source but reflections from the bulb's glass globe that can cause glare to reach levels prohibited by government regulations.
The controlled viewing environment of the lighting booth features five light sources ranging from artificial daylight to UV light, a push-button lamp selector, automatic light source sequencing and a lamp timer to track aging of the primary light source, according to the company.
However, their yellow light is unflattering to most plants; use them to supplement natural light, not as a primary light source.

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