Eyes wide open, projector can do so small?

Dating back to 1640, a Christian cleric named Gilbert invented a slide projector called a magic lamp. Using the lens and mirror to reflect light, a series of pictures were reflected on the wall. At the time, this was an amazing invention. Many people wanted to see what happened when they broke the threshold. This machine is the prototype of the projector. As the saying goes, people fear that famous pigs are afraid to grow strong. This great invention did not allow Chisell to spread its reputation. Instead, it brought a fatal disaster. Everyone accused Chisell of casting black art. The projector was sent to heaven together. In 1654, Germany's Jerash Basel described for the first time the invention of a slide projector. The outer shell of the slide projector was a metal box that was knocked into a square box with a chimney-like exhaust tube at the top. A cylinder was installed directly in front of the cylinder. A slidable convex lens forms a simple lens. There is an adjustable focal length panel between the lens and the tin box. The light source is inside the box. The initial light source is candlelight. When in use, place the slide projector in a dark room, insert the slide into the groove behind the convex lens, and light the candle. The light source is reflected by the mirror and converges. Through the transparent picture and the lens, a light beam is formed on the wall screen.


Nowadays, with the booming development of industry and technology, projectors have long since gotten out of their initial image, becoming smaller and lighter, and they have been widely used in offices, schools, and entertainment venues. With the popularity of the concept of smart home, projectors are no longer limited to teaching, business, but gradually into the millions of households, has become a part of home entertainment products. The built-in operating system contains a lot of video and game resources. Watching TV shows, watching movies, and playing games, the unprecedented large-screen experience brought by smart projectors is unmatched by television and computers. Imagine being alone in a small theater. , The large screen and large screen caused a strong impact on the visual and brought a shocking audio-visual experience.

Although projectors on the market are far less bulky than they were, they still occupy a certain amount of space. Some need to be fixed and some are installed in specific locations (such as walls and ceilings) to be used for home projectors. For me, this is a confusing issue.


Recently, the author came into contact with a smart projector named Le Box, which is a new product of the domestic micro-projection brand VEZ. The first impression of this product is that it is small and small enough to make people think that it is actually a Projection equipment. How small is it? Taking the mobile phone in the author's case as an example, the volume of the LeBox is similar to that of a mobile phone. From the actual measured data, the length and width of the Le Box is 87mm, the thickness is 18mm, and the weight of the 150g is even lighter than that of my own mobile phone. Feel delicate and portable. Compared to EPSON, BenQ and other established manufacturers of projectors, Le Box's most attractive to me is its portability, the size is so small, and even can be directly into the jacket pocket or backpack to carry, usually work to visit customers need When presenting product data or documents, U disk or TF card can be inserted into the music box and projected directly on the wall for customers to explain. It is much more intuitive than writing or laptop. After returning home from work, the music box will be opened to play movies. , Enjoy the pleasure of watching the big screen, and you can even connect your mobile phone with your free time. You can play a game through the big screen of projection. A projector can almost meet our various needs.



Time flies, and it is nearly 400 years since the birth of the first projector. With the rapid progress of science and technology, the projection industry may usher in a big change. The appearance of Le Box has completely broken people. For the recognition of traditional projector products, the innovative ideas of “small, fast, and inspiring” are completely infiltrated into smart hardware products. As science and technology change lives, what kind of future scenarios will be unknown, but our lives are being subverted by these technology products.

According to the type of sensor, the Touch Screen is roughly divided into infrared type, resistance type, surface acoustic wave type and Capacitive Touch Screen four kinds. The design of capacitive touch screen is reasonable, but the problem of image distortion is difficult to be solved.


Capacitive touch screen


The touch screen works by using the body's current induction process. A special transparent metal conductive substance is coated on the surface of the glass. When a conductive object touches the glass, it changes the capacitance of the contact, so as to detect the position of the touch. But touching a non-conductive object with a gloved hand or hand does not respond because of the addition of a more insulating medium.


Capacitive touch screen can sense light and fast touch, anti-scratch, not afraid of dust, water and dirt influence, suitable for harsh environment. However, capacitance varies with temperature, humidity or environmental electric field, so its stability is poor, low resolution and easy to drift.

Capacitive Touch Screen

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