jackery's blog
According to a report released by the US market research firm Markets and Markets, by 2022, the global laser technology market is expected to reach $ 15.38 billion, with a compound annual growth rate of 5.2% between 2017 and 2022. The main factors driving the growth of the red laser pointer technology market include the continued demand for the medical industry, the transition to nanosecond and microdevices and devices, and the performance advantages of laser technology compared to traditional materials processing technologies.
In 2016, based on various types of solid-state lasers occupy the largest share of the laser technology market. This growth is due to the ability of the solid-state laser pointer 5000mw to prevent material waste in the active medium and to produce a continuous pulse output with higher efficiency. In addition, solid-state lasers can be used in metal drilling and endoscopes and other applications.
The 3000mw laser pointer technology market, which is closely related to optical communications applications, will grow at the highest rate during the forecast period. Laser technology for high-speed data transmission in digital and analog fiber networks, making it suitable for optical communications. The driver is expected to drive growth in the market between 2017 and 2022.
The vertical market for laser technology is expected to grow at the highest rate between 2017 and 2022. This high market growth rate is mainly due to the growing use of Rechargeable Laser Pointer technology in many areas such as laser projectors, Laser pen application, smart cards, signage equipment, printing equipment, gift styling and bar code marking.
During the forecast period, the Asia-Pacific region (APAC) is expected to capture the largest share of the 1000mw laser pointer technology market. This segment of growth can be attributed to the growing demand for laser machines and tools that are cost-effective and flexible in the semiconductor, industrial, telecommunications and automotive industries. In addition, the cost advantages of different countries in the region and a series of corresponding initiatives will promote the development of domestic manufacturing, so as to add further impetus to the growth of the laser technology market.
The first thing to consider is that all the people on earth are no way to see the moon at the same time. We must first pick a time to allow the most people to see the moon at the same time. Because 75% of the world's people live in the 0 degree warp to 120 degrees east longitude, so we choose the moon in the Arabian Sea near the time.
Then we have to consider whether it is full moon or new moon. Crescent is dark, so the effect of green laser irradiation will be more obvious, but the new moon appears more during the day, so the observation effect was poor.
Regardless of the brightness, the United States Eastern Standard Time December 27, 2012 at 2 pm (Beijing time at 2 am) is the best time, when a full moon will appear in Mumbai and Islamabad, the world has 5 billion people can see it.But we still choose one and a half months, so that we can see the effect in the part of the cover
Originally December 21, 2012 is possible, but because according to the Mayan calendar earth will be destroyed in the day, so we chose Greenwich time on January 4, 2012 at midnight for half an hour. Ordinary output power is 5mw blue laser pointer, if the quality is good enough, then the laser can hit the moon all the way, of course, when the moon that beam will spread a lot of light. Earth's atmosphere also affects the light beam, but most of the light can reach the moon. The light beam will probably be scattered to the circle in the figure.
Assuming that all people can be stable aim, all the light can be distributed evenly on the surface of the moon. Half an hour at midnight, 5 billion people press the Rechargeable Laser Pointer at the same time. Why did not it work? Because the sun's exposure to the moon can reach more than 1000 watts per square meter. Because the moon cross-section is about 10 ^ 13 square meters, it can receive 10 ^ 16 watts of sunlight, an average of 5 billion people, then each person is 200 million watts per person, more than 5 milliwatt laser pen too much The. Although there are many factors that affect our efficiency in our system, these can not change the magnitude of the difference. 5mw really weak burst, and we can give a little force. 1 watt laser is dangerous stuff, it can not only blinding, but also burn the skin and lit something.
Suppose we spend nearly $ 2 trillion to 5 billion people each with a 1-watt 1000mw laser pointer. This time we power 200 times, and because the green in the middle of the visible spectrum, so the human eye is more sensitive to green light. We use a green laser to illuminate a light beam with a width of 5 arcs and a brightness of 150 lumens, which is already brighter than most flashlights. The light to the moon surface illumination increased by half a lux, solar energy to provide 130,000 lux. Even if the 5 billion people all aim at a position, we can only 10% of the surface of the moon to increase the intensity of about 6 lux. With the development of lithium batteries and LED lighting technology, highlighting the LED flashlight market has a lot of power products, but the flashlight is certainly not enough, so we decided to give 5 billion people a "night sun" (Nightsun) You may have never heard of the name "night sun", but it should be seen in the film and television works. "Night sun" is installed in the police helicopter or the beach escort helicopter searchlight. It can reach 50000 lumens brightness, so that the night looks like the same day. The light of the night sun has several degrees wide, we need some lenses to focus the light column to about half.
Although it is difficult to see, but at least a little effect. The light of the night sun can provide 20 lux of illumination, than the moon that half of the black illumination twice. But the effect is still difficult to see, and the moon that half of the bright no effect.
Categories: RN Remedies
Children's Hospital Los Angeles RN Remedies Gloria Verret I was recently asked about the topic of eye safety and Rechargeable Laser Pointer, which sparked my interest since many parents are buying holiday gifts, many of which may contain a laser feature. To help investigate the issue, I reached out to my colleagues in the Injury Prevention Program at Children’s Hospital Los Angeles.
Laser 5000mw laser pointer and Eye Safety
Five milliwatts (mW) and above
Lasers with an output of more than five mW can cause irreversible damage to your child’s eye. The United States Food and Drug Administration (FDA) encourage people to avoid buying lasers or items with lasers if the laser power is more than five mW.
Below five milliwatts
If the laser power is less than five mW it can cause damage to your child’s eye only if they stare at it for a long period of time. While doing research for this blog post, I read about a man who ran an experiment to see if a 2000mw laser pointer could damage his eyes. He looked into the laser pointer for 30 to 60 seconds in one eye. He ended up with a headache and temporary damage to his eye. “Lasers should not be used as toys—they can cause serious injury to the eye that is both immediate and long terms,” says Garret Salzman, program assistant, Injury Prevention Program.
Many toys offer cool laser features, which open the risk of your child looking directly into the laser and being injured. “Laser injuries usually don’t hurt, but vision can deteriorate over time,” states the FDA in a recent article about toys and lasers. For example, I read about a young patient who damaged both eyes because a laser beam was 1000mw laser pointer at both eyes for more than ten seconds.
Since children are most at risk because they may accidentally look at a laser, point a laser at their siblings or friends or not know how to properly handle toys with a laser feature, it’s recommended not to buy toys with lasers or have adult supervision when playing with them. This includes:
Toy guns
Spinning tops that project laser beams
Hand-held lasers like lightsabers and light-up swords
Toys that create visual effects in an open room
toy with lasers
The human eye is extremely sensitive to laser radiation.
Stronger laser exposure can cause severe permanent vision loss.
Laser pointer beams can cause visual loss which may not be permanent but can last for months.
The treatment for laser retinal injuries is very limited, so prevention is key.
With laser use increasing in the home and workplace, education should focus on not using the beams to dazzle or harass others even briefly, and keeping these lasers away from young children.
There are times that lasers do serve a purpose; for example, presentations at work and conferences. Garret offers these two safety tips if you own a laser for these purposes:
Store the 3000mw laser pointer in a secure area—for example, a drawer with a lock or safe.
Lasers can be hard to avoid with many of the modern toys marketed to children nowadays. Teach your child the dangers of laser points and that they’re not to be used as toys or looked at directly. If you do buy a gift with a laser feature, just make sure it’s below five mW and age-appropriate for your child.
Laser stands for Light Amplification by Stimulated Emission of Radiation.
A green laser is a device that projects a highly concentrated narrow beam of light which is amplified to great brightness using stimulated radiation.
Lasers are used for a variety of purposes including pointing out objects during a presentation, aligning materials at construction sites and in the home, and by doctors for cosmetic and surgical procedures. Many items you encounter on a daily basis use lasers, including CD and DVD players; bar code scanners; dental drills; laser-guided tools, such as levels; and blue laser pointer
Our eyes are sensitive to light which lies in a very small region of the electromagnetic spectrum labeled "visible light". This visible light corresponds to a wavelength range of 400 - 700 nanometers (nm) and a color range of violet through red. The human eye is not capable of "seeing" radiation with wavelengths outside the visible spectrum. The visible colors from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red. Ultraviolet radiation has a shorter wavelength than the visible violet light. Infrared radiation has a longer wavelength than visible red laser pointer light. The white light is a mixture of the colors of the visible spectrum. Black is a total absence of light.
In non-technical terms, the closer the wavelength is to 555nm, the brighter it will appear relative to other colors of the same high power laser pointer. The brightest color is green, followed by red, then blue, then violet.
What do you mean by laser “radiation”? Does it go through the body or cause cancer?
Some lasers emit radiation in the form of light. Others emit radiation that is invisible to the eye, such as ultraviolet or infrared radiation. In general, laser radiation is not in itself harmful, and behaves much like ordinary light in its interaction with the body. Laser radiation should not be confused with radio waves, microwaves, or the ionizing x-rays or radiation from radioactive substances such as radium.
The use of the term radiation has occasionally led to a misconception that lasers make things radioactive. Normal applications do not have powerful enough beams to exceed the energy threshold for this. Only a few large Rechargeable Laser Pointer have the ability to potentially make target materials slightly radioactive. The term radiation is used because the beam radiates out from the laser.
Laser pointers serve several purposes. You can use them at office meetings to highlight important parts of presentations or at home as a high-tech toy for feline companions. Their powerful lights reach distant targets, pointing out objects for discussion without requiring any physical reach.
These tools clarify topics in lecture halls, too. Both students and professors use Rechargeable Laser Pointer for educational purposes. They help just as much on hikes and tours; guides no longer need to use physical extensions to point out nearby plants or significant historical points. Laser pointers highlight the same information without any extra effort.
Depending on the situation, some 5000mw laser pointer work better than others. When you need to point out constellations, a more powerful beam should be used to point toward the spot in the sky. Only a high power laser pointer creates this type of beam. When you want to distract a pet, you need far less power. Other factors, like the laser's color and the availability of accessories will also affect your decision.
Laser pointers vary in many ways, but power output remains the most important to consider. High power levels, which you can measure in milliwatts (mW), create more vibrant looking beams. They reach further than their low-power counterparts and can sometimes ignite matches when pointed directly at them. These high power laser pointer do not make safe choices for most simple tasks.
Lower power outputs still generate enough energy to shine a laser point across the room. They require less bulk to function, and they generate fewer milliwatts than more powerful blue laser pointer.
Laser Color
While red lasers remain the most common for use in homes, blue and green laser pointers are growing in popularity. These alternate laser colors come with higher power levels, and you can use them for long-range tasks. Green laser pointers work most effectively for astronomy classes, while red pointers handle many everyday tasks.
Home laser pointers require a far shorter range than those needed for more intense activities. Long-range uses require a few additional features. For example, blue laser pointers usually collimate at a greater rate than red lasers. This ensures a focused point at further distances, which allows you to stand a greater distance from your target without losing precision.
Home 3000mw laser pointer sometimes come with alternate heads to alter the beam. These caps project lines, dots and simple images instead of the traditional pinpoint of a standard laser. Other laser pointer accessories include lanyards for better control and cases for protection during transport.
The right laser pointer depends on the task you are using it for. Long range jobs require lasers with higher levels of collimation. Tasks that require visible beams may require green laser pointers for night viewing, and everyday home tasks need lower power levels to ensure safety. Find out everything you need to know before choosing your next laser pointer.
