How to get a reliable laser pointer for projection?
Usually laser fans and amateurs would like to choose pen designed laser pointers for presentation in astronomy research, school teaching, business conference, lectures, speeches etc. A low powered laser pointer with output power range of 1mW to 50mW is enough for all kinds of presentation applications.
However, some people are using powerful laser pens in public. A lot of people even abuse high power laser pointers in illegal occasions. For instance, some people even use powerful lasers to point at air plane, pilots, or football players on ground. The abusing of powerful lasers can bring serious dangers. If you are only in need of a projecting laser pointer, a low powered one is enough to do so. Low powered laser device among 1mW to 50mW is enough for presentation.
How to use high power lasers correctly?
Even though high powered lasers are especially dangerous to human retina and tissue, industrial designed lasers such as alignment lasers, laser modules and diode lasers are widely used in any corner of practical fields. Laser safety should never be avoided whenever professionals are operating a powerful industrial laser device. At the same time, invisible beam radiation of infrared lasers is also a serious potential danger.
In order to assure high safety operation of powerful laser gadgets, users should choose the most appropriate laser safety goggles to prevent strong radiation of laser beam emitting. In addition, laser operators should never star into powerful beam, or serious retina injury might be caused immediately. Any time of looking into powerful beam will leave a light spot on retina for a long time.
Caution: Pointing a laser pointer into someone’s eyes can be hazardous to his heath. The powerful laser radiation might bring injury to human eyes and skins. Even though laser hazards are not as serious as pointing a gun at someone, people should be cautious enough and never stare into laser radiation. Do remember to wear a pair of laser safety goggles whenever pointing a powerful laser in hands.