The length of the ordinary household bathtub shall not be less than 1500mm. The normal size of the bathtub is 1. 2 meters to 1. 7 meters, the normal size is 1, 600, 750 or 1, 700, and the depth is between 50 and 70 centimeters, but the actual size may be reduced by 10-20 centimeters. The Square Small Sizes Bathtub is 120 cm long, mainly for children.
1) Square Bathtub length The length of a square bathtub is basically these: 1: 1, 5, 5, 1, 6, 6, 1, 7, 7, 8, 1, 9, but most of them use a length of 1. 7, which is the average height of most Chinese people.
2) Square bath width The width of the square bathtub is basically 0. 7. 7 meters, 0. 75 meters, 0. 85 meters, 0. 9 meters, and the most used is 0. 8 meters.
3)Height of a square bathtub The height of a square bath is between 0. 58 and 0. 9 meters, usually 0.7 meters.
Square Bathtub,Square Small Sizes Bathtub,Square Acrylic Bathtub,Square massage Bathtub,Square jacuzzi Bathtub Dongguan Horizon Technology Development Co., Ltd. , http://www.horizontub.com
Talking about the cognition of laser infrared lamp technology
[ Huaqiang Security Network News ]
The security industry first developed from all over the country, and the streets and alleys already have cameras. Everyone is no longer unfamiliar and has achieved 24-hour continuous monitoring.
With the emergence of new intelligent video technologies in the security industry, dynamic monitoring requirements are increasing. If there is an emergency, it is necessary to conduct long-distance tracking and monitoring. However, the current LED infrared lamp products are unable to complete the long-distance tracking and monitoring. To truly realize the tracking and monitoring of the long-distance distance, it is the best choice to realize the infrared light products of the medium and long distance. The laser infrared night vision system has been positioned for long-distance monitoring of several kilometers in the past, and the cost of the product has caused most engineering companies to stop. After all, the number of such long-distance projects is relatively small. Shenzhen Dap Laser Technology Co., Ltd. launched laser infrared lamp products, mainly concentrated below 500 meters, which can truly realize the wide application of laser infrared technology in civil engineering projects.
At present, laser infrared lamps are widely used in the monitoring night field, but there are still some problems in the use process. That is, there are certain misunderstandings about the fundamental understanding and understanding of laser infrared lamps, and this article talks from several angles. The view of laser infrared light, for everyone to correctly understand and understand the laser infrared products.
1, laser definition
The original Chinese name of the laser is called "laser" and "leise". It is the transliteration of its English name LASER, which is an abbreviation of the first letter of each word taken from English LightAmplificationbyStimulatedEmissionofRadiation. It means "expanded by stimulated emission light". The full name of the laser in English has fully expressed the main process of manufacturing lasers. In 1964, according to China's famous scientist Qian Xuesen, the "light-stimulated launch" was renamed "laser."
2, laser features
Directionality: The laser emitted by a laser is naturally emitted in one direction, and the divergence of the beam is very close to that of parallel light.
Monochromatism: The spectral width of a laser is very small and is on the order of a few nanometers. Therefore, it has a good monochromatic light source.
High brightness and high energy density.
The laser has a solid-state laser (such as a ruby ​​laser. It converts light energy into light energy, the wavelength is different), a gas laser (such as a carbon dioxide laser), a chemical laser (chemical energy is converted into light energy), and a semiconductor laser (point energy can be converted into light energy). . 3. Laser infrared lamps are semiconductor lasers that use semiconductor materials to recombine holes and electrons. The electron energy level is lowered to release electrons to generate light energy. Then, photons form laser light in the propagation direction of photons. The advantages of the semiconductor laser include: small size, the size of the laser is on the order of millimeters, the light-emitting chip is on the order of white micron; the conversion efficiency of the point energy to the light energy is high, the electronic conversion efficiency is up to 55%, and the LED electro-optical conversion rate can generally only reach 20%.
4. Laser infrared lamps use semiconductor lasers as light-emitting devices
1 The semiconductor laser outputs light so it can be used as an illumination source. And because the laser has good directionality, it shows that the angle of the beam is small, the energy is concentrated, and there is still enough light intensity to propagate to a long distance, so it is very suitable for long-distance illumination. The biggest feature of the illuminator can be made for long-distance targets.
In short, the development of laser infrared light technology and the application of the security industry's irreversible trend for night vision monitoring; the field creates another space. There is always a skeptical attitude towards new technologies, and some people maintain a mindset of people and enterprises. Independent innovation is the core competitiveness of enterprises, and infrared laser night vision technology caters to and integrates the development direction of infrared technology. Whoever grasps this direction, whoever masters the commanding heights of the market, wins the customer's recognition of the strength and innovation ability of the enterprise, thereby winning the market's front-end profit and market control and possession. With the development of laser infrared technology and the recognition of the market, whether laser infrared light has become the market recognition, whether laser infrared light has become the mainstream infrared night vision product in the market, let us wait and see.
Summary: Grasping the rational use of laser infrared light technology, dominate the security monitoring market, will be the goal of independent research and development companies.