Today in 2021, my mother rewarded me with some fun gifts. It was a laser pointer. The gift I dreamed of, because I often see people on TV using laser pointers to verify the authenticity of banknotes and the authenticity of diamonds. I think this is so cool, I want to own a laser pointer in my dreams! This laser pointer is the best Laser pointer in 2021!
The laser pointer can be controlled in one stroke in teaching, meeting, training, and PPT presentations! The page turning pen has three modes, highlight, zoom, laser, easy to operate, with time reminder function, it can be designed directly on the computer, it is very convenient and easy to use, the appearance and touch are very good, it can be used by plugging in the USB, and many functions are very good Practical. The earliest telephone communication relied on copper wires to transmit electrical signals. As people's demand for communication capacity increased, electrical signals could no longer meet the demand. Later, scientists discovered that optical fibers made of transparent optical glass can transmit information-carrying lasers, realizing a span of information capacity from small water ditches to large rivers, thus allowing networks that carry massive amounts of information such as televisions and images. It can be successfully built to make the 5G world a reality.
It is because we use a red laser. As a light source device, it is cheap and easy to see. It seems to be the first choice, but now there are also blue, orange and yellow. I think red is laser. The cheapest laser equipment. We sell laser pointers for red lasers. I don't think you will use a red laser with a "laser pointer". If the ordinary laser pointer is red, it should be very cheap, because it is also used on CDs and DVDs. If the wavelength is shortened like green or blue, there will be problems with the material and the luminous efficiency will not increase. Laser diodes will also be cheaper (thanks to the blue light). Ah, I think green is better for laser pointers than blue. Of course, considering human eyesight, even at the same intensity, green is easier to see.