Introduction to Laser Pointer Pen

During the process of multimedia teaching of popularity, an issue prevails that how to introduce modern teaching equipment which can effectively combine with the teachers' classroom teaching habits. Currently, as teachers make teaching demonstration, they entail escorting their computers. It is essential to explain while they are operating the computers, and where they need to make emphasis, they are obliged to get up from time to time to point the focus. Under these circumstances, the multimedia presentation equipment, whose essence is to facilitate teachers, constrains the teachers' rich classroom language.As a result, advanced teaching equipment has not been fully utilized, instead of affecting the traditional classroom teaching of teachers. There is a similar phenomenon in the teaching medical science. It is acknowledged by the medical students that, as the professors depict the specimen with lesion, they can not touch the specimen, under this environment, the professors can not point the place producing lesion precisely. On that occasion, the teaching quality decreases heavily.

In response to this phenomenon mentioned above, the education industry pays more attention to the modern teaching equipment which can closely connect teachers' enormous teaching experience with habits. That puts forward higher requirements to a variety of informationalized equipment of application in the teaching. Under these circumstances, laser pointer pen comes into appearance.

Laser pointer pen, taking advantage of low-power, visible laser, makes users maximize the advantage of body language in the teaching and demonstration, with the purpose of making lectures, teaching more and more lively and perfect. The laser pointer pen completely solves the inconvenience of using the mouse in the classroom and meeting.

The laser pointer can be divided into three categories, namely, red laser pointer, green laser pointer and blue-violet laser pointer.

Red laser pointer, whose wavelength is usually between the scopes of 650nm-660nm (red), is adopted in the DVD disc. It is the earliest and most popular laser pointer, and its price is generally the cheapest. It belongs to semiconductor laser. The green laser pointer, whose wavelength is generally 532nm, belongs to solid-state laser. Owing to its high degree of visibility, the green laser pointer is widely used in teaching. Blue-violet laser pointer, whose wavelength is generally 405nm, can stimulate fluorescence. It has the role of a money detector, and belongs to a semiconductor laser.

From what has been discussed above, we may safely draw the conclusion that the appearance of laser pointer pen is absolutely convenient to a variety of circles.