Myth 1: Fresnel is a material? Fresnel is not a material, Fresnel is the name of an optical lens. Fresnel optical screen refers to the optical microstructure anti-light screen with Fresnel structure. Fresnel structure is a concentric diffusion structure. Please refer to the structure diagram below for details. In addition to the Fresnel structure layer, the real Fresnel optical screen has seven other structures that perform their respective functions. 

Myth 2: Fresnel optical screen can only adapt to ultra-short focus machines? Fresnel optical screen has the requirement of incident angle, so the Fresnel optical screen adapted by machines with different projection ratios is different and cannot be used universally. The telephoto projector has a special Fresnel optical screen, and the ultra-short focal machine has a special Fresnel optical screen. 

Myth 3: Smart micro-projectors from Jimi, Nut, Dangbei, Epson and BenQ can't be used with anti-light screens? The adaptation of Fresnel optical screen is only related to the projection ratio of the machine. As long as the projection ratio is greater than 0.6: 1, it can adapt to the telephoto Fresnel optical screen. 

Myth 4: Fresnel optical screen can only adapt to the machine of laser light source? Laser is just a kind of light source of projector. In various schemes of projector, there are bulb light sources, such as bulb machines of brands such as Epson, BenQ and Youpai. There are also LED light sources, such as the LED model of the rice nut Dangbeifeng rice BenQ; There are also laser light sources, such as monochromatic laser machines, trichromatic laser machines, and mixed light sources, such as ultra-mixed light technology: RS Pro 3, and ALPD 5.0 super full-color laser technology: X5 Ultra. As long as the projection ratio of the machine is greater than 0.6: 1, no matter which of the above light source schemes is adopted, it can adapt to the telephoto Fresnel optical screen. (It should be noted here that if it is a three-color laser model, it is recommended to match the three-color Fresnel optical screen to support speckle reduction technology.) 

Myth 5: Does Fresnel optical screen need to be plugged in? Fresnel anti-light hard screen and Fresnel anti-light frame screen belong to passive imaging and do not need to be plugged in. The electric Fresnel concealed ceiling curtain needs to be plugged in and belongs to the electric lifting curtain.

Myth 6: Fresnel optical screen can't be cast sideways? The telephoto Fresnel optical screen supports side projection, but I don't recommend that the projector choose side projection first, because there will be obvious loss of image quality and brightness when the projector is side projection, whether it is used with the screen or not. The projector with optical screen side projection needs to follow the following points: 1. Do not put the machine on the balcony (window) side; 2, the machine as low as possible; 3. When watching, people look at the other side of the machine symmetry; 4. The arrow on the back of the screen is facing up. 

Myth 7: Does Fresnel optical screen have poor light resistance? The ambient light shielding rate of Fresnel structure anti-light curtain is 85%~92%, which is measured in the laboratory, and it is not a virtual standard. Fresnel structure can shield the ambient light in the left, right and up directions in the front projection mode. 

Myth 8: The surface of Fresnel optical screen is silver-gray, so color reproduction is not good? Color reproduction performance is a very important index of Fresnel optical screen. Our Fresnel optical screen can achieve that the chromaticity coordinate differences υ' and χ' between the projected light and the reflected light of white, red, blue and green colors are not greater than 0.02. 

Myth 9: Does the clarity of Fresnel optical screen not work? Our Fresnel optical screen can support up to 8K resolution, and it is no problem to adapt to mainstream 1080P or 4K resolution. 

Myth 10: Fresnel optical screen does not support projector hanging? Both telephoto Fresnel optical screen and ultrashort focal Fresnel optical screen support projector hanging. When hanging for use, the Fresnel optical screen needs to be rotated 180 degrees for installation, and the arrow mark on the back of the screen faces down. At this time, because the machine and the main light are in the same direction, it is recommended to turn off the main light and turn on the spotlight at the top of the screen when using it. Myth 10: Fresnel optical screen does not support projector hanging? Both telephoto Fresnel optical screen and ultrashort focal Fresnel optical screen support projector hanging. When hanging for use, the Fresnel optical screen needs to be rotated 180 degrees for installation, and the arrow mark on the back of the screen faces down. At this time, because the machine and the main light are in the same direction, it is recommended to turn off the main light and turn on the spotlight at the top of the screen when using it.