Will the Green Laser Pointer Replace the Red Laser Pointer?
Posted Nov 29 2012 8:01am
Nowadays, I am quite interested in technology and science. And laser pointer of course became one of my topics. cheap 200mw lasers today are quite different with the early ones. The early laser pointers were helium-neon (HeNe) gas lasers and generated laser radiation at 633 nm. They are designed to produce a laser beam with an output power no greater than 1 mw. And they are mostly red laser pointer. Today, besides the red laser pointer, other colors are possible too. And the 532 nm green laser is the most common alternativeA laser pointer is bright. If it isn't, it must be broken (hehe). The apparent brightness of a laser beam depends not only on the optical power of the laser and the reflectivity of the surface, but also on the chromatic response of the human eye. For the same optical power, the green laser will seem brighter than other colors because the human eye is most sensitive at low light levels in the green region of the spectrum. The redder and bluer wavelength decreases sensitivity We have all seen our share of Green Laser Pointers, either being used as presentation pointers or as simple astronomy laser pointers, but unfortunately they are giving lasers a bad name. This is simply because of how poorly crafted most of these laserpens actually are. People looking for precision light instruments are persistently being stuck with shoddy laser diodes that burn out or malfunction long before the beam should die. It seems finding high quality laser pens will require a bit more research to do nowadays. If you know where to look, the internet can open the door to a plethora of reputable laserpen retailers. Many of these companies carry different laser beam color frequencies (the most popular of which are green laser pens) as well as output powers, so finding a high quality laser pointer pen to meet your particular needs can be easy. However, there are some things you must always look for to determine the quality and value of a laser before you decide to order the device. Lasers have a variety of types such as laser pointer Series, Laser Series Single, Double Laser Series, Color Laser Series, Laser Series Twinkling, Animation Laser Series, and Professional Ida Laser. One use of red laser that has the lowest power is as a pointer to use traditional presentation slide. In the UK, the doctors refused a laser pointer that has a power output of more than 1mW are sold freely, one of which is a kind of 100 mw red laser which is only used for parties or performances that are open to spectators. In the United States, the laser may be used in general only up to the maximum laser power of 5mW. Although laser devices in circulation are generally harmless, but that does not mean that the laser beam does not contain the potential damage. In order to prevent accidental damage to the retina of the human eye, a number of countries have set limits for maximum output power of the laser device. If you're looking to buy a cheap 200mw lasers for the upcoming holiday season, either as a gift for someone or a present to yourself, you'll quickly learn that there are so many options to choose from. With literally thousands of different models available and hundreds of companies selling lasers, it can be difficult to know where you should be looking and what you should be looking for.