![]() ![]() In other words, full 100% luminance uniformity would be when the projector distributes precisely the same degree of brightness over every measurable reference point on the projection screen. This is the process of ensuring how close a projector comes to putting an equal amount of brightness over the entire area of a screen. The candela actually replaces the obsolete measurement of the “Candlepower (cp)” and is equivalent to 1.02 cp units of measured visible light. To put it into easier terms, a candela is about the equivalent of the light produced by one candle. Mathematically, it is a measurement of one candela of visible light per squared radian (1 candela * sr) Symbol = lm. The averaged multiple readings of visible light from various angles to determine a standardized unit of measure known as ANSI (American National Standards Institute) Lumens. Lumens are the units of measure for the amount of light that a projector is reportedly able to produce. It is the standard measurement of brightness emitting from your projector. Picture Resolution – The clarity of the imageĪs these variable are interdependent, it is worthwhile looking at these elements individually to get a deeper understanding of the science behind projector throw distance calculation.Luminance Uniformity – The projector’s ability to spread an even amount of light over the projection surface.Lumens – The brightness of the projector.Below are the 3 basic variables most affected by throw distance: If the throw distance is considerable, make sure you have enough output (lumens) on your projector to do so. In other words, the higher the throw distance, the less bright the image will be. However, even this is limited as defined by the Inverse-Square Law where the luminosity decreases intensity as the light beam travels further. The basic rule is the more distance you have between the projector and the projection screen, the larger the projected image will be. The distance between your projector and screen is a crucial element in setting up your presentation. ![]() Hence, you will need to consider the throw distance and the projector features that will give you maximum placement flexibility. The projector position and the size of the image will depend upon your room configuration. the distance that the image is “thrown” or “projected. Knowing the science behind the calculations is key for using projectors optimally.Ī projector’s throw distance is the distance between the projector and the image on the screen i.e. A sound understanding of throw distance calculations is crucial for integrating projectors in offices, educational institutions and home entertainment systems. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |