So which kind projection screen is the best option? There a two kinds: Black Grid Screen or a Fresnel Screen, which one is the best one? Now let’s discuss the details.
First of all, although the two kinds of screens have different structures, they can be used with ultra-short focus projectors, and both rely on special optical structures to achieve directional reflection and anti-light. Today I will talk about the principles of the two structures.
Technology will no doubt continue to develop, and new technologies are emerging. In such a rapid change, the future of the traditional TV industry seems elusive. People are scramble for big screen TV, but are they likely to be too big to manipulate and difficult to move? Laser TV is an excellent solution.
Because of its flexibility and portability, laser TV is becoming more and more popular, offering screens that are over 100 inches in size and can easily be moved from room to room, or placed invisible when not in use. How will laser TV develop in the future?
Many friends who buy home cinema projectors are entangled in whether to buy the projection screen. The user will hesitate, a lack of understanding of the projection screen. Maybe you think that projection screen just like the ordinary white walls, spend big price to buy the projection screen is a waste. Is it Right?! Quite wrong. Please take a look at the following pictures: Same projector at same environment, left one is an ordinary curtain, the right is a professional high gain projection screen.
Short for light amplification by stimulated emission of radiation. A device that creates and amplifies electromagnetic radiation of a specific frequency through the process of stimulated emission. The radiation emitted by a laser consists of a coherent beam of photons, all in phase and having the same polarization. Lasers have many uses, such as cutting hard or delicate substances, reading data from compact disks and other storage devices, and establishing straight lines in geographical surveying.
As we all know, RGB is the primary colors, can contaminate any color which human will identification.Ordinary LED projector, is to restore the light source into RGB three colors, and then re modulation according to the color ratio, produce the final image. But laser is different, laser is a monochromatic light, cannot be restore to RGB three colors.
Use blue laser diode as light source to replace high intensity discharge (HID) lamp. In order to generate the red, green, blue three primary colors, diode laser throw the laser to a fluorescent pink wheel, resulting in yellow (red and green additive color mixing). Blue laser can be generated when the blue laser passes through the diffuser. Then the projector will separate the color sequentially transmit through a color wheel, cast to an imaging surface, such as DLP chipset. Then the imaging surface of the light transmit through the lens and hit on the projection screen.