Highlight how the blind pursuit of rational selection of harmful projector – pro
< BR> brightness is the only standard?
<BR>
Projector
As the most economic large-screen display devices, has been meeting rooms, teaching and film buffs device of choice. Than
Flat Panel TV
, The projector can easily be more than one hundred & jealous screen? Gui? Grumble onyx profile control system flex see inflation climbing po paddle?
TV
Can not be compared; and compared to large size screen, the projector in the purchase, installation and commissioning using the cost and also to maintain its own absolute superiority. Precisely because of this, the projector needs have been increasing in recent years, while the short term will not achieve market saturation.
<BR> <BR> As a display device, projector-owned performance and display, TV and other equipment similar to the most important, nothing less than the brightness, contrast, resolution, etc.. However, in choosing projector, many users will choose the projector brightness as the only standard elements of funding, under the premise of the choice of possible high-brightness products into a lot of beginners buy projector standards; and Marketplace on
Sell
Officers are also happy to recommend or introduce products announced how much the projector to achieve the brightness, while suggesting the user in the choice of projector brightness of the importance of the time. In contrast the projector manufacturers, although not deliberately promote the importance of brightness, but will always be light on the top of each performance. In fact, buy projection not buy a flashlight, the brightness will not be the sole criterion for selection, if you do not understand, please read on.
<BR> <BR> <BR> Let's talk about the concept of projector brightness is. The full name of brightness intensity, usually in lumens as a unit, used to describe light radiation per unit time to respond to the strength of visual ability. Said projector unit is the flux of international standards ANSI lumens, ANSI lumens is the American National Standards Institute to develop a method of measuring projectors luminous flux to the specific method for the determination: first determine the distance between the projector and the screen up to 2.4 meters, the screen projection size 60 inches, compared with the photometric measurement of the screen, "field"-shaped intersection of the nine points on the illumination, multiplied by the area, to get the projection screen luminance of 9 points, and calculate the average of the 9 points that are ANSI lumens.
<BR> <BR> Us for a slightly more straightforward to say it again to explain the concept of brightness. The brightness of the projector, refers to the output to the screen projector lamp light intensity, which is projected image of the brightest, the higher the brightness of the projector, projected onto the screen shows the same screen size the more bright, contrast, projector The lower brightness, projected onto the screen with the screen size the more bleak. In terms of brightness to the eyes is the most direct effect to some extent as long as the screen brightness, the human eye can distinguish the clearest picture and the details of most of the screen, the brightness when the brightness is too high or too low, the picture will thus lose more more details. This is like taking pictures, over exposure and under exposure will affect the picture quality, only the right exposure to the performance of the most perfect results. Projector and camera imaging imaging has some similarity, so if you understand the concept of camera exposure, it is not hard to understand too high or too low on the brightness of the projection screen.
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