Laser pointer that can eliminate color blindness and color weakness


A red laser pointer that can eliminate the recognition obstacles of color blindness and color weakened patients, including a pen case, a laser generator, a power supply, and a switch.

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A red laser pointer that can eliminate the recognition obstacles of color blindness and color weakened patients, including a pen case, a laser generator, a power supply, and a switch. The laser generator is a solid-state two-color laser generator or a three-color laser generator. The three-color laser The generator is composed of red light, green light and blue light. The solid-state two-color laser generator has three types: red light, blue light or red light, green light or blue light, and green light. The three laser generators are closely distributed around the central axis, so that the laser points formed by the emitted laser beams are as close as possible without affecting each other, and the indicated positions are consistent. The use of three primary colors of laser beams for instructions allows color blind and color weak patients to get rid of the predicament that they cannot rely on color to identify the location of the indicator, and provide a barrier-free environment for their work and study.

Technical background:

Laser pointers are widely used in multimedia teaching, lectures and conferences. The high powered laser pointer is generally composed of a laser generator, a power supply, a switch, and a current-limiting resistor. When the switch is turned on when in use, the laser generator outputs a beam of laser light, which is projected onto the screen or wall, and the light spot formed can play a role in indicating. Most of the existing laser pointers are red laser pointers. In recent years, some green laser pointers have appeared, and they are all monochromatic laser pointers.

For ordinary people, there is no or few recognition obstacles when using monochromatic laser pointers. However, for patients with color blindness and color weakness, monochromatic laser makes them unable to recognize by the color of the laser in many situations. Brought them a lot of obstacles. Imagine that if a green laser pointer beam hits a background with a similar color, it is not easy for ordinary people to easily recognize the laser spot from the background. Although this situation is rare for ordinary people, it is color blind. There are many colors that cannot be distinguished from the color weakened patients, and they will be easily troubled by the fact that the laser spot cannot be easily recognized from the background, which brings inconvenience to work and study.

A laser pointer that can eliminate the recognition obstacles of color blind and color weak patients. By integrating two or three colors of lasers in the blue laser pointer, especially the red, green and blue three-color laser generators, the laser pointer can output two at the same time Or three-color laser beams can be projected on the screen or wall to form two or three-color laser dots for indication.

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