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Q&A Laser Pointer List

Laser pointer is the main symbol of the development of science and technology in the 20th century and one of the pillars of optoelectronic technology in modern information society. From laser applications in aerospace to laser pen processing products that are ubiquitous, we all enjoy the little changes that laser science and technology bring to our lives.

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Q&A Laser Pointer List
Do you know how to make a laser pointer?

Laser Pointers are common in daily life. Maybe adults have already seen it. But for me, when I first saw a high powered laser as a child, I was fascinated by its colorful, straight light. I feel like my eyes are full of color. As adults, we use this amazing tool a lot in our lives, but many people don't know what makes a laser pointer glow or how it's made. After viewing many videos, let me share with you the steps of making laser pointer!

2021-10-22 10:36:15

Fans use laser pointers to interfere with athletes and stars

The European Football Association (UEFA) league is 8 days and the EURO2020 semi-final takes place within 7 days. England fan Danish GK Kaspa Schmeichel responded to the laser pointer such as the accusations against the English Football Association (FA). England and Denmark's The game entered the playoff with 1-1. In the 104th minute, England's national team striker Raheem Sterling was hit in the penalty area and scored. England and Denmark entered the playoffs 1-1. In the 104th minute, England's national team striker Raheem Sterling was hit in the penalty area and scored. Schmeichel played a penalty shootout, but forward Harry Kane pushed the ball in again, which was the last goal.

2021-10-22 10:35:52

Laser pointer safety level license

Class IIIA level, visible low green output of continuous USB laser pointer. Like Class II, Class II is not used, and no direct observation with light may increase the risk. Yuanwang I laser equipment can avoid being observed by 1-5mW high powered laser beam. Shine into the eyes of others. The level in Figure 3 (a) will not cause damage to the naked eye and avoid opening the normal human eye reaction, but it does cause damage to the human eye when using the observation lens device.

2021-10-22 10:35:04

The power of laser weapons in modern warfare

A laser weapon is a directed energy weapon that attacks a target with a laser beam fired in a specific direction. Fast, flexible, accurate, and anti - electromagnetic interference performance. It plays a unique role in photoelectric protection, air defense and strategic defense. It can be divided into tactical laser weapons and strategic laser weapons. It became a traditional deterrent. The strongest laser pointer weapons travel at the speed of light, so they generally don't need to be used anymore, but laser weapons have not become popular until today because lasers are very sensitive to the weather.

2021-10-22 10:33:52

Cats and laser Pointers

One of the main problems with high powered laser and laser cats is the laser itself. Can glowing laser beams cause permanent damage to cats' eyes? Of course, you don't want the laser beam aimed directly at your cat's eye, but don't worry if you accidentally do. Cat laser Pointers and automatic laser cat toys usually have lasers in the range of 1-5 milliwatts, which are safe for human and animal eyes. However, not all laser Pointers meet specifications, so look for a model marked as safe for your pet.

2021-10-22 10:32:23

Automatic laser pointer for animals

According to animal behavior experts, a typical cat goes on at least 8-10 "hunting expeditions" per day. The same is true for indoor cats that don't need to hunt. As a result, domestic cats can become addicted to cat laser pointer toys. But one question spoiled the party: Are laser Pointers bad for cats? One of the main problems with high powered laser and laser cats is the laser itself. Can glowing laser beams cause permanent damage to cats' eyes? Of course, you don't want the laser beam aimed directly at your cat's eye, but don't worry if you accidentally do. Cat laser Pointers and automatic laser cat toys usually have lasers in the range of 1-5 milliwatts, which are safe for human and animal eyes. However, not all laser Pointers meet specifications, so look for a model marked as safe for your pet.

2021-10-22 10:32:08

Have you ever used a 125MW green laser pointer?

In recent years, there have been high powered laser devices that can emit a variety of colors, such as full-color lasers, but here we will briefly explain typical colors, such as those used by laser Pointers. Laser Pointers are best known for their red, green and blue colors. Among them, the red laser is a color that even people who are not interested in lasers have seen. Due to mass production and wide use, red lasers are currently in the low price range.

2021-10-22 10:28:09

Automatic laser pointer for animals

According to animal behavior experts, a typical cat goes on at least 8-10 "hunting expeditions" per day. The same is true for indoor cats that don't need to hunt. As a result, domestic cats can become addicted to cat laser pointer toys. But one question spoiled the party: Are laser Pointers bad for cats? One of the main problems with high powered laser and laser cats is the laser itself. Can glowing laser beams cause permanent damage to cats' eyes? Of course, you don't want the laser beam aimed directly at your cat's eye, but don't worry if you accidentally do. Cat laser Pointers and automatic laser cat toys usually have lasers in the range of 1-5 milliwatts, which are safe for human and animal eyes. However, not all laser Pointers meet specifications, so look for a model marked as safe for your pet.

2021-10-22 10:27:52

What is the best bird repellent laser pointer?

A week ago, several birds appeared on the neighbor tree next door. Every day they started calling at midnight, but at a meeting. It felt like they were not the same bird and kept calling until more than five in the morning. It was really collapsed. Have you ever encountered this situation and how to solve it? It’s said on the Internet that a green laser can repel birds. I don’t know if it’s possible to buy a green laser pointer.

2021-10-22 10:27:38

Will the laser pointer hurt the eyes?

In recent years, toy laser pointers have been popular among elementary and middle school students at low prices. Eye safety has become a social issue when used for gaming purposes. In the summer of 1997, there were reports that there had been incidents where the red light from laser pointers hindered professional sports, but recently, laser pointers are readily available and become a popular product for children to play. Exposing human eyes to the instantaneous displacement of Class 2 or Class 3 laser beams can cause temporary flash blindness, after-images, and glare. This is especially dangerous when individuals criticize visual activities. Records have shown that after a few seconds of exposure to a Class 3A laser pointer, the retina will be damaged. What happens when you look at laser pointers, whether you use laser pointers for entertainment or if they are actually part of your job, you will want to know the symptoms. Due to recent high powered laser regulations, the legal output is reduced, so low mW (milliwatt) laser pointers may not cause significant damage to it.

2021-10-22 10:27:10

Is the use of laser pointers legally allowed?

In July 2013, a report of "Egyptians'fighting' military helicopters with high powered laser" caused a discussion among domestic netizens: Can a small laser pointer really "fight" planes down? Will the pilot’s vision be affected? The laser pointer is an ordinary legal commodity. If it breaks the law, teachers across the country break the law. The people in the business meeting are also breaking the law. Because most of them use laser pointers. The laser is dangerous. During the use and experiment, please follow the specifications and pay attention to the correct and safe use. Not at present. China’s laws and regulations (including the Public Security Management Law and the provisions on transportation) temporarily do not provide for such items. Normal use is not a problem, but it is illegal to illuminate the eyes of others. The blindness rate is more than 90%, and it is suspected. Injury to others, the more powerful will not only hurt the eyes, but also burn the skin.

2021-10-22 10:26:38

Cats and laser Pointers

One of the main problems with high powered laser and laser cats is the laser itself. Can glowing laser beams cause permanent damage to cats' eyes? Of course, you don't want the laser beam aimed directly at your cat's eye, but don't worry if you accidentally do. Cat laser Pointers and automatic laser cat toys usually have lasers in the range of 1-5 milliwatts, which are safe for human and animal eyes. However, not all laser Pointers meet specifications, so look for a model marked as safe for your pet.

2021-10-22 10:21:23

Is automatic laser pointer cat toy really safe?

Just watching a cat play with toys makes me feel warm and healed. Among them, the pointer that emits light is a very popular toy for young and energetic cats. If you want to buy a pointer and play with a cat, you need to know what kind of toy the pointer is. Depending on how you play, it may hurt your cat's eyes, so please consider purchasing it after knowing the safety of the pointer.However, on the other hand, there are many cases of eye damage caused by irradiating pilots and football players with laser pointers. In Austria, a 12-year-old boy was playing with a cat with a laser pointer. It was reported that his vision deteriorated after about a week. This is a simple laser pointer that cats like, but isn't it dangerous for cats?

2021-10-11 12:06:59

Adjustable red laser pointer to prevent focus shift?

Since there is no component in the screw cap that can fix the luminous body (i.e. lamp cap) on the integrated circuit board, the lamp cap after the adjustment and focus is usually set directly into the screw cap, and then the outer cover body is clamped and assembled. However, in this clamping and inserting process, it is difficult to control the size of the smelting tool or the processing force, which makes the lamp cap easy to be compressed and deformed by the screw cap, which often causes the laser beam to be out of focus. For fixing parts, it is necessary to go through the steps of lathe, polishing, trial fitting and focusing to adjust the focal length of the laser light to the best angle. However, these structures are not only cumbersome to manufacture and difficult to assemble, but also add to the manufacturing process. the cost of.

2021-10-11 12:06:35

Will the infrared laser leak from the 650nm red laser pointer?

The 650nm laser uses a 808nm infrared laser diode as the pump source, which is converted into 1064nm infrared light by a Nd:YVO4 laser crystal, and then is frequency doubled by a KTP frequency doubling crystal (wavelength halved) to obtain a 523nm green laser, but generally not on the laser crystal It is coated with infrared filter film, so the light directly coming out of the crystal is actually mixed light (532nm green light, 808nm infrared light, 1064nm infrared light three wavelength mixed light), if you directly measure the power, the power value obtained is the mixed light The power of the light, and the power of the 650nm green laser is the power of pure green light. Green light is only a part of the mixed light, so the total power of the mixed light is greater than that of the green light.

2021-10-11 12:05:44

What is the wavelength range of the yellow laser pointer?

A yellow laser pointer with a wavelength of 593.5nm is on the market. Based on DPSS technology, two laser beams with wavelength of 1064 nm and 1342 nm were added through nonlinear crystal. The complexity of this process makes the yellow laser pointer unstable and inefficient, with the output power varying between 1MW and 10MW with temperature. If it is too hot or too cold, a mode jump will occur. This is because the size of the laser pointer does not provide the required temperature stabilization and cooling components.

2021-10-11 12:05:20

The treatment technology of trigger point laser?

The physical factor therapy for the treatment of myofascial trigger points mainly includes: laser treatment: especially high-energy laser for myofascial pain. In our clinical work, we have found that many customers have magical effects. This breaks my traditional view and needs more Many studies In clinical work, we rarely use physical factor therapy alone, and it is almost always used as a small part of the overall treatment method. At present, there is sufficient research evidence that the laser has a good short-term effect (light amplification by stimulated radiation). This laser is composed of a narrow monochromatic beam of photons of the same frequency used in various diseases.

2021-10-11 12:04:59

What is the use of torch with laser pointer?

As a special light source, laser is widely used in military, aerospace, civilian use, etc. Laser has many characteristics: First of all, laser is color-single, said to be single-frequency. There are several types that can generate different frequencies at the same time. The laser is coherent light. The characteristic of coherent light is that its light waves are all synchronized, and the whole beam of light is like a "train wave". Once again, the laser is highly concentrated, and there is a long period of time, it may be distracting or appetite. The appearance of invisible matter.

2021-10-11 12:04:38

Why does my laser pointer go dim?

Now, a new study published by a team from the National Institute of Standards and Technology (NIST) attempts to estimate the actual number of injuries people have suffered from using such devices. This study, led by Charles Clark, describes the nature of the problem and details experiments using cheap webcams that can detect excess infrared light from a green laser.

2021-10-11 12:04:11

Have you used a 20mw laser pointer?

Light a match with a stand (red). Pointer laser. Remise 5% pour .,? Hi, I want to sell some good laser pointers in Holland, I am looking for one. The best choice is to use simple, cheap to buy, and provide a huge, January 11, 2019 electrical rules to ensure that the laser is safe for the human eye, but not necessarily! Laser pointers and laser pointers are available through mail order, green beam lasers,? -The engine laser that emits light by burning hot gas.; The wavelength of the 520nm green laser product of the 1000MW green laser! Designed to curb the import and sale of potentially dangerous lasers. Repair and supply all cosmetic, beauty and medical laser and IPL parts.

2021-10-11 12:03:41

Can the laser pointer shoot up to a distance of 3 miles?

A palm-sized laser appliance, which looks like a pistol. Not only can it shoot long distances up to 3 miles away, but it can also burn paper outside through a room. The most powerful thing is that it can target objects outside the earth's atmosphere. The power of a general Laser pointer is 0.5mW, which can reach more than ten kilometers away in a clean environment. However, due to the large amount of particles in the air, the scattering and absorption of them will be enhanced. Under normal conditions, only about 500 meters may be completely dissipated, and the visible distance may be only half.

2021-10-11 12:03:14

What is the range of a 532nm laser pointer?

For the predetermined value, a 532nm green laser pointer can also be used to calibrate the capacitance of the chip capacitor and fine-tune the hybrid integrated circuit. Excellent positioning accuracy enables the laser tuning system to improve the throughput and circuit functions of miniaturized precision linear combination signal equipment. The 500mW Green laser pointer is used to automatically trim the glutinous rice to the specified resistance. It has the characteristics of high precision, minimal thermal impact on adjacent parts during processing, no pollution and easy computer control. It can meet the requirements of fast cutting resistance. As well as slicing and cutting semiconductor substrates such as silicon, germanium, and arsenic.

2021-10-11 12:02:45

Do you know the basics of laser pointers?

The principle of the red Laser pointer is that a laser diode emits light directly when it is energized. The principle of the green laser: The wavelength of the 1064nm infrared light emitted by the infrared semiconductor laser is converted through the nonlinear crystal (KIP crystal), so that it emits 532nm green light. The green light is not emitted directly from the semiconductor laser. The price of KTP is very expensive, and the yield is not as high as red. Overall, the price of green light is much higher than that of red light. The visual effect of the 200mW red laser is similar to that of the 20mw green laser, and the power consumption is also similar.

2021-09-29 09:16:55

How are the types of lasers divided?

The types of lasers mainly include ruby ​​lasers, carbon dioxide lasers, excimer Laser pointer, semiconductor lasers, mid-infrared lasers, near-infrared lasers, visible lasers, near-ultraviolet lasers, vacuum ultraviolet lasers, helium-neon lasers, and metal vapor lasers. The function and composition of the laser: It is composed of two parts: the light-emitting center and the matrix crystal. The light-emitting center of most laser crystals is composed of activated ions. The activated ions replace the cations in the matrix crystal to form a doped laser crystal. When the activating ion becomes a part of the matrix crystal composition, it constitutes a self-activated laser crystal.

2021-09-29 09:16:32

Green laser pointer experiment?

With the development and innovation of laser technology, green Laser pointer have made great progress. At the same time, professionals are also concerned about the practical application of laser pointers in our daily lives. Completed a series of experiments, just enjoyed the wonderful experience of the laser pointer. It is always fun to try a laser pointer. People can use a high-power green laser pointer to burn wood, matches or cigarettes, cut electrical tape, etc. For example, one should prepare a green laser pointer with an output power of at least 200mW, which is sufficient for thermal experiments. However, people still choose a 1000mW green laser pointer, or even a high-power output to burn wood or matches, in order to burn quickly in a short time.

2021-09-29 09:15:33

What is a DIY laser microscope?

The laser microscope (CLSM) consists of a confocal microscope and a femtosecond infrared laser Verdi/Mira. It is a combination of optical microscope and modern Laser pointer technology, high-sensitivity detection technology, scanning control technology, microcomputer image processing technology, fluorescence and marking technology. . CLSM has opened up a new way for life sciences to observe the structure of living cells and changes in specific molecules and ion biology, becoming a new generation of powerful research tools in the fields of molecular cell biology, neuroscience, pharmacology, and genetics.

2021-09-29 09:14:32

How to choose a good laser?

A good laser should have the ideal mode, stable power and other elements. Incentive model. Carbon dioxide lasers use electrodes to excite carbon dioxide gas to produce lasers. According to the installation position of the metal electrode, it can be divided into direct current excitation and radio frequency excitation. Beam divergence angle. Strictly speaking, the beam divergence angle is not part of the content of the laser, but because the laser mode has a great influence on the far-field divergence angle, we will discuss it here. The influence of the beam divergence angle on the cutting quality is reflected in the width and slope of the incision. The smaller the divergence angle, the narrower the incision width, the smaller the slope, and the higher the quality.

2021-09-29 09:14:12

What's so interesting about laser pointers for cats?

Cats are natural enemies and usually have a strong prey drive-the instinctive drive to catch rodents, birds and bugs. This is why your cat stares at the crawling bugs on the floor and then pounces on them or looks longingly at the birds on the bird feeder in the yard. This is why your outdoor cat occasionally brings you "gifts", such as birds, lizards, or even bunny, on your doormat. Unlike dogs, cats do not usually have the same opportunities for physical exercise. They do not go for daily walks or run freely in the backyard. Many domestic cats stay strictly indoors. Playing games with a Laser pointer is an excellent way to encourage strenuous activity. Even a fat cat can improve her aerobic exercise by chasing a short-term high-energy exercise with a laser pointer. This activity helps build and maintain muscle mass and helps keep the cat healthy and trimmed.

2021-09-29 09:13:41

How to correctly use laser pointer toys for cats?

Not everyone can drag toys to let cats chase or play with them. Like Mary Beth, many people are unable to run around the house to pull pole toys or retrieve discarded toys. Sometimes there are only two options-use a laser pointer or not play at all. In this case, I prefer to play games, but use the laser pointer to play games in a way that minimizes frustration.

2021-09-29 09:13:16

What is the difference between a laser pointer and a handheld laser?

A "laser pointer" is technically a low-power hand-held laser legally sold, purchased and/or used for pointing purposes in a particular jurisdiction. Hand-held lasers may look and operate similar to laser Pointers, but they are more than legally allowed to be sold. Laser, buy, and/or use as an indicator more powerful. Since the media generally refers to any hand-held laser as a "laser pointer," it is probably futile to cite this distinction. But the public should know that, like the devices used in demonstrations, low-power indicators for playing with pets (less than 5 milliwatts) are much safer than the high-power hand-held lasers (50-2000 milliwatts) often used in protests.

2021-09-29 09:12:45