A 22-year-old man from Greenfield, Flintshire was given a suspended sentence on January 9 2014 for aiming a laser in a “persistent and prolonged laser attack” on a North Wales Police helicopter.
On September 25 2013, the helicopter was called to find a missing person. The pilot was hovering at 1,200 feet over a densely populated area of Greenfield when a green laser beam targeted the aircraft. Over an eight-minute period, the aircraft was hit about ten times by the beam. The majority hit the outside of the helicopter though a video recording showed the interior illuminated for a couple of seconds.
While the helicopter maneuvered to avoid the laser, the missing-person search was not abandoned. No emergency or evasive action was taken, and the captain was in full control throughout the incident. However, the attack distracted the crew, caused distress and wasted search time and resources, according to the prosecutor.
The three-man crew identified the source location and directed ground officers to the home of Kevin Mark Griffiths. He pretended to be asleep and later produced the laser from a bedroom. He told police he had purchased the laser while on vacation in Spain.
Griffiths said it was a “foolish, impulsive and reckless action,” aiming at what he knew was a police helicopter.
At trial Griffiths admitted a charge of recklessly endangering an aircraft or persons inside. He was given a five-month prison sentence suspended for 12 months, ordered to do 200 hours of unpaid work, and was fined £165 in costs.

Laser pointer has already take an important role in our daily life, it does provide human beings much support in various areas. With the development of laser diode technology, more and more high-power laser pointers are developed and the price of them is becoming so competitive that all people if needed can afford one. And because of that, the misuse of laser pointer brings many incidents, which should be punished seriously.

The first laser pointer was created in the early 1980s, a red laser pointer in very large size and cost hundreds of dollars. At the first beginning, laser pointer was used for educational and business presentation and optical demonstrations as an eye-catching pointing device with maximum power of 1mW. At that time, no optical problem was reported. Then it came small size laser pointers which are able to be handheld, and other attractive colors.

It is no doubt the shining laser beam can capture ones’ attention, makes one have difficulty leaving eyes from it, and all people who get to it would fall in love with it at once. It does bring much benefit and convenience for human beings as a helpful tool. But unfortunately nowadays, there are so many optical incidents caused by the misusing of laser pointers. Among those users, they are using laser pointers are for fun or even joke. Most of them are teenagers and habitual criminals. As juveniles, teenagers would never image the danger that a laser pointer cause unless it does happens. They hurt themselves by shining laser beam to eyes or staring at high-power laser beam directly, while some for fun, pointing at aircraft, moving vehicles or neighbors, leading serious incidents. While for habitual criminals, they already realize the harm of laser pointer but still keep on having such stupid behavior, with the fluke mind they would not be captured by police.

By concentrating all power on the thin laser beam, the laser pointer is so bright and powerful that it can cause temporary and permanent blindness. When a pilot or car driver is driving an aircraft or car and suddenly was shined into a piece of laser beam, he has to close eyes at once by ability. One can image how serious incident it would lead. All cabin members’ life are in danger, and big traffic incidents happens. This is all because of a laser player’s trick.

I am Jimmy and I am a laser enthusiast. I dreamed to have a high-powered blue laser pointer since I saw someone used it to burn match one day. There is nothing can be excited that dream comes true, thanks my dearest friend Jason, the gift he sent me is a 500mW blue laser pointer today.

He kept the secret all the time. When I received a parcel from FedEx courier, I was curious what was inside and noticed it was sent from Laser To, Hongkong,but I had never bought things there and no friends there, either. 


I opened it in a hurry and dare not to believe my eyes as soon as I saw it was my dreamed thing, a laser pointer. Then I can’t help shouting, OH MY GOD, it was 500mW blue laser pointer. After putting batteries inside it,  I turned on it at once, cool, marvelous blue beam, to be honest, I don't think there are words to describe its beauty. 
When I was thinking who sent me such big gift, my phone ring, it was Jason, my best friend.

Below is its Technical Parameters I copied from Laser To’s website,

Name Blue Laser Pointer
Wavelength 445nm
Output power 500mW
Laser class IIIB
Transverse mode TE00
Range in darkness (m) 300-8000m
M2 factor <1.2
Beam divergence, full angle (mrad) <3.0
Beam Diameter at Aperture (mm) <2.5
Spectral Line width (nm) <0.1
Polarization Ratio >100:1
Warm-up Time (minutes) <0.5
Operation Temperature (℃) 10～30
Storage Temperature(℃) -10～+50
Housing material Aluminum
Expected Lifetime (hours) 8000
Laser Head Dimensions(D×L, mm) Φ38mm×205mm
Cooling System metal heat sink
Operating voltage(VDC) 2×16340 batteries
Warranty time One Year

It is as big as a medium flashlight, a little bit heavy maybe because it is made of Aluminum.

Nearly forget the most excited experiment, burning match. Both of us wearing laser safety goggles, and found a blackhead match first, handed it about 10cm away from laser pointer, and turn on the laser pointer carefully, you know what, the match was fired within second. Then we moved it a little bit far away, about 50cm, the match was light in about 5 seconds. Remove about 1 meters, the time is longer, 15 seconds. Then we used it to pop balloon, cut tape and , it is a small case to it.

Here, I would like to share with you guys who need laser pointer for burning experiments. Blue laser pointer is the best one for burning experiments comparing with green and red in the same output power, as its wavelength is the shortest among them, and shorter wavelength is more readily absorbed. And black head match is much easier to light as black can absorb heat better than other colors.

Thanks Jason again for sending this magic match 500mW Blue Laser Pointer from Laser To.com.

There are numerous laser pointers in markets, but for stargazing, 50mW green laser pointer is no doubt the best tool for amateur astronomer and astronomical enthusiasts.

1.Why choose green laser pointer?

As we know, there are four visible colors laser pointers in total, which are blue violet, blue, green and red. One should know that green color is the most sensitive color to human’s eyes, it is 7 times visible than other colors in the same output power. That means, one 5mW green laser pointer seems 7 times brighter than one 5mW blue violet/blue/red laser pointer. In the dark night, green color laser pointer is easily to catch one’s attention and allow you to follow the dazzling forest green line to see far away stars or constellation. It is amazing to own this tool.

2.Why choose 50mW laser pointer?

mW is abbreviation of milliwatt, which is optical output instead of electrical input. The higher the output power, the more shining the laser pointer, at the same time, the more dangerous it is. According to laser pointer safety classified level, 50mW belongs to class IIIB. This level is relatively safe to human with proper caution. And the beam is bright enough to point at stars or other celestial objects.

3.How much of a 50mW 532nm green laser pointer costs?

It is usually USD $70~80 per piece of a 50mW 532nm green laser pointer from reliable supplier.

One need to pay much attention to the quality of the laser pointer, including diode, material, cooling system, guarantee time etc. Some black-hearted manufacture use second-hand diode to gain much more profits, which hurt customer’s right and health deeply.

And one also need to notice 50mW is harmful without suitable use and protection. Do not point at eyes or stare at the beam directly and leave it from Children.

Enjoy your stargazing laser time with the 50mW 532 nm green laser pointer.

Cheap green laser pointer can emit dangerous level of invisible infrared laser radiation. Nobody is able to notice the invisible beam through naked eye, until a severe retina hurt brought by powerful laser radiation. Consumers should be always responsible to them, and get genuine lasers from reliable supplier.

How to get a green laser pointer?
Green laser pointer is got from diode pump laser diode, not a finished laser diode. Professionals get a 532nm green laser light in three step process. First step, a formal standard laser diode will generate near infrared light with a wavelength of 808nm. Second step, the near infrared light is focused onto a neodymium crystal that converts the light into 1064nm infrared laser light. Third step, the 1064nm infrared laser passes into a frequency doubling crystal that emits green light at a wavelength of 532nm.

There has been a long way to get a finished green laser pointer from a standard laser diode. Laser filter will be designed inside the laser device so as to prevent infrared light leaking from the laser diode. However, shoddy green lasers will be designed without IR filter. While people are pointing a shoddy laser, invisible infrared light will be pointed out at the same time. The invisible infrared light is extremely dangerous to human eyes, usually we only recommend skilled people to operate infrared laser under special laser safety equipment. The exposure of eyes of infrared light will make blind or serious retina damage.

Safety Operation of green laser pointer:
Low cost green laser pointer is seriously hazard, since humans or animals may incur significant eye damage by exposure to invisible light before they become aware of the invisible infrared light. Never try to purchase low cost lasers without any safety standard.

It is a necessity to choose green laser pointer with CE, FDA safety standard. It is no joking to play with a laser pointer, but pay high attention to laser safety whenever you are holding such kind of gadget.

In addition, a pair of laser safety goggles should never be ignored to make high standard safeguard to human eyes. A suitable red lens laser safety goggles will be enough to protect eyes in all kinds of laser operations. Just let the high safety standard green laser pointer be your tool, not be a risk. 

Have a try of the low powered 5mW red laser pointer, which will never make your pets feeling alone. Feel the joys with your pets from a red laser.

It is always the major concern for all pets’ owners that never let your pets feel alone. The pet’s health is always the top priority to all pets’ owners. 5mW red laser pointer projects an extremely charming red laser beam, which is not harmful for your pet’s eyes, even in the case of direct contact. This low powered device with the most secured design to make sure everything is safe while playing with pets.

What are the featured characteristics of 5mW red laser pointer? It adopts the pen style design, allowing you to bring any place with your pet cat or dog. This portable laser is able to be put in the pocket, there will be few inconveniences you can feel while carrying it outdoors. The Red beam is especially bright and attractive, which has provided the chance to show off you in front of people gathering.

This elegant designed 5mW red laser pointer is manufactured from the most durable brass body material, and anodized with matte white shell design. The elegant and fine designed white shell laser is able to maintain the most stable and reliable performance in all kinds of application fields. Besides those of practical applications in scientific research, laser safety experiment institutes, lab experiment, it would be always a perfect tool as a pet toy. The 650nm red laser projects the most unique and purest Red beam, will bring your pets completely different experience while playing with your pets.

There is no worrying about its operation. The 5mW red laser pointer is operated by alkaline powerful supply, which is operated by two pieces of AAA batteries. Two new batteries will ensure an extremely long endurance time of more than 180 minutes. No matter what kind of laser pointer you are keeping in the palm of the hands, people should be always responsible and control the constant operation time lower than 30 seconds. The reasonable operation will greatly extend the lifetime of this laser pen more than 8000 hours at least.

In queue of Class IIIa laser, laser safety operation is still an important concern. Even though this is little harm from a low powered laser pointer, it is never a correct instruction to point the laser directly to pet cats or dogs. Never try to point the pen laser to any moving vehicle, air plane or refection boards such as mirrors. The reflected beam will be greatly dangerous and might cause incidents unexpectedly.

This 5mW Red laser pointer is just one of your pet toys, but not the only one. It is certainly not a good idea to let your pets chase behind the light spot without stop. Never do it. Try to attract attention from other toys after laser pointer chasing. This low powered 5mW red laser pointer will never regret you unless you have the chance to play it with your pets.