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Author: Tao Jiaxin
2021-04-24 12:38
Last update date: 2021-04-24 12:43
It is circulated within the police force that Guan Fang is trying out a new flashlight designed for the "Tactical" series of the mainland brand KLARUS.
According to the data, the trial model reaches 2200 lumens (lm), which is five times stronger than the lumens of the daily-use model. It has a range of 320 meters, which is equivalent to illuminating the ground from the top of the Bank of China Building and has a "one-key flash" function.
According to the analysis by scholars, the luminous intensity of this type of flashlight is equivalent to one-fifth of sunlight within a distance of one meter.
The official website refers to the same series of users including the Russian police station, the United Nations peacekeeping force, and the Israeli air force.
In response to enquiries, the Police Force stated that it will continue to evaluate the effectiveness of the operation and review the operational needs of personnel, and introduce suitable equipment in a timely manner. The details of the deployment of the police force will not be made public.
It is understood that the police have inspected front-line portable equipment in recent months, among which new tactical flashlights are being tried out.
According to the news, it is the "XT11 GT PRO" model of the mainland brand KLARUS, which belongs to the police tactical series.
According to the official website, the price of an "XT11 GT PRO" is GBP 89.95 (about 968 Hong Kong dollars).
According to the manufacturer's information, the flashlight of this model can reach 2200 lumens (lm), has a "one-key flash" function, uses a strong light beam for visual interference, and has a luminous intensity of 25600cd in the extremely bright mode.
According to the same manufacturer's daily use series models, the general household and portable installations are 120 lumens, 400 lumens, and the high-intensity 1000 lumens, which has been described as comparable to the high beam of the car (commonly known as "high light").
With a range of 320 meters, the top floor of the Bank of China Building can be illuminated to the ground
The manufacturer claims that the "XT11 GT PRO" has a range of 320 meters, which is equivalent to the tallest building in the New Territories, the 318.8-meter-high Nina Plaza. It can also be the fourth tallest building in Hong Kong, that is, from the top of the Bank of China Tower, which can illuminate the ground.
According to the manufacturer, the flashlight is lightweight and can be operated with one hand, waterproof, suitable for duty, defense, search and rescue, and outdoor carrying. It can withstand 1,000 drop tests. The head is coated with PVD, which can break glass to survive and can also be used for close defense. , Described as "attack head".
Scholar: The illuminance at a distance of one meter is about one-fifth of the sunlight
Some scholars explain that lumen is a unit of measuring light power, that is, the light energy emitted by a light source per second.
A 17W LED bulb can emit about 1100lm of light power, so 2200lm is approximately equivalent to two 17W bulbs. Although the total energy is not much, the luminous intensity (measured in candela or cd) depends on the concentration of light. The same energy is concentrated in the smaller angle, the higher the luminous intensity.
For example, a 2200lm ordinary bulb emits light uniformly in all directions, and the luminous intensity is only about 175cd, but this flashlight concentrates all the energy to illuminate from one direction, and its illuminating ability is much stronger. According to the product description of this type of flashlight, the luminous intensity can be Up to 25600cd, it is a very concentrated strong light, 146 times higher than the luminous intensity of the above-mentioned bulb.
How bright is this flashlight to human eyes?
If viewed from a distance of one meter from the flashlight, its illuminance is 25,600lux, and when the sun is strongest, the illuminance is about 130,000lux, so at a distance of one meter, the illuminance of the flashlight is about one-fifth of the sunlight.
However, the illuminance will drop very quickly with distance, and is inversely proportional to the square of the distance. Therefore, at a distance of two meters, the illuminance has dropped to one-twentieth of the sunlight. Very strong".
The non-first introduction of KLARUS anti-amendment law has appeared
The manufacturer KLARUS was established in Shenzhen in 2011. Among them, the XT11 tactical series was launched in 2013. The official website said that the series users include: Russian Police Department, United Nations Peacekeeping Forces, Litaoyuan Public Security Agency, Israel Air Force, Indian Army New Team, etc.
This is not the first time the police have purchased KLARUS products. According to the official website, the police have used them when handling anti-revision demonstrations in 2019, and they are the first batch of users of "XT21X". The anti-riot helmets of the Athlon Team can be seen on the side of the riot helmet. The torch has 4000 lumens and a high-bright range of 316 meters. The manufacturer described it as "using strong light and strobes to deter demonstrators", which can help suppress riots on a large scale.
Looking through the information, some of the helmets of the Athlon squad were also equipped with flashlights during the July 1 parade last year.
Police Officer: There is a practical need for civil rights: Guidelines for use should be explained
Some police officers believe that there are practical needs for flashlights, such as night patrols and sweep operations, mountain search and rescue, etc., will come in handy.
Civil Rights Watch spokesperson Shen Weinan believes that understanding will require action, but is concerned that if the police use it in public activities or demonstrations, whether it will be defined as a "weapons", and whether there are guidelines for use, including the distance at which exposure to the other party should be avoided, which will harm the other party. Eyes, etc., the situation is similar to the principle of using a baton not to "pounce your head".
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Police: timely introduction of suitable equipment belongs to the operation details not disclosed
The police responded to enquiries and stated that in order to ensure that police officers have more effective equipment to cope with actual operational situations, they will continue to evaluate the effectiveness of operations and review the operational needs of personnel, introduce suitable equipment in a timely manner, and consider all options that can help improve operational effectiveness. Frontline personnel can continue to perform their duties professionally in an increasingly severe work environment.
The police have been procuring suitable equipment in accordance with established policies, procedures and codes.
The information on the procurement of equipment is the details of the deployment of police operations and will not be made public so as not to affect the effectiveness of the operation.
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