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The laser projection is formed? The laser projector contains what are the main components? The laser projector is controlled by computer laser scanner to scan the laser beam in accordance with the requirements of the trajectory, the use of residual vision of the human eye, so that people can see the figure formed by laser scanning. Therefore, the laser projector is mainly composed of the following three parts: the computer control system, laser scanners (usually a galvanometer scanner) and lasers. Why laser graphics sometimes see flashes? Due to the laser projection is the formation of a laser beam through a quick scan graphics. Surface treatment of keychain laser pointer needs to be improved.
If you want to scan graphics, the time to complete a graph over the residual vision of the human eye (the human eye to detect less than flashing 1/30 seconds to complete a scan), the human eye will feel flashing.
Why do I see the laser projector are outline graphics? Contour graphics is the most "economical" scan time, graphic, in order to avoid graphical "flicker", laser projection contour graphics; Another reason is that in the same light source, the contour graphics than the average graphics "light" was and more. Laser projection than the average projection is more suitable for use in the "light" environment. In fact in the computer program of the laser projector. Surface treatment of keychain laser pointer is of the primary importance.
The projection graph is defined by the number of scan nodes, scanning Scan "vector" in accordance with the order of the nodes, this will form the laser graphics. Graphical format of the laser projector be? Laser projection can be projected far? Laser projection laser laser beam scanning the formation of graphics, is a cone-beam projection out (see below). Therefore, the size of the graphic format you can see first, is related to the distance between the projector and the screen, followed by the scanning angle of the laser projector. As the laser projection graphic scan is made, rather than as a general projector imaging through the lens, so it does not determine the imaging of the image plane. Innovative design of keychain laser pointer has been submitted to the manager.
Effective projection distance of the laser projection, illumination with light intensity and the environment. An important factor affecting the light intensity: the choice of the laser output power; distance of the screen and the projector and the projection angle of the projector. The distance will naturally cause the brightness drop due to the loss of light energy transfer. The other farther away, the greater the larger the screen on the projection angle graphical format, the laser energy will be more decentralized, the brightness of the graphics will decline. Why is the same power red laser, green laser and blue laser-projection graphics brightness a big difference? The same power is the energy of the laser output. However, the degree of sensitivity of the human eye for different colors of light is not the same. Quality improvement of flashlight keychains can be ensured anyway.
The optical definition of the human eye sensitivity coefficient of the most commonly used green laser was 0.83, while the sensitivity coefficient of the blue laser is only about 0.1. The blue laser than the green laser "dark" and much more. How to use the best of the laser projector? In the same illumination environment, the laser projector and the screen placed in the relative position of its effect there will be a greater difference. The best placement (shown below) to the human eye projection graphics line of sight environment, the main light source to the direction of the light on the screen. The handy use of keychain laser pointer will be shown in details.