It had been widely used in most of night vision camera, remove control ect.
There are two kinds of shape for those 940nm led: SMD 940nm LED and Through-hole 940nm LED.
940nm led is a infrared LED(IR LED). Common infrared LEDs are like: 940nm IR LED, 950nm IR LED and so on.
940nm LED,940nm LED,940nm IR LED,High Brightness 940nm LED Shenzhen Best LED Opto-electronic Co.,Ltd / BESTSMD CO LIMITED(HK) , https://www.bestsmd.com
We supply variety of 940nm IR LED(Infrared LED) products. Including Through-hole 940nm LED, SMD 940nm LED and high-power 940nm LED. We can also produce 940nm LED according to your requirement.
940nm LED is one of the most popular IR LED in our life.
We can customize the shape, the lighting angle, the number of emitting source, the flat pin LED and braided LED. Such as: infrared 5mm 940nm LED with 5 degree, infrared 5mm 940nm LED with 20 degree, infrared 5mm 940nm LED with 30 degree, infrared 5mm 940nm LED with 45 degree, infrared 5mm 940nm LED with 60 degree, infrared 5mm 940nm with 90 degree, infrared 5mm 940nm LED with 120 degree. Infrared 3mm 940nm LED with 3 degree, infrared 3mm 940nm LED with 20 degree, infrared 3mm 940nm LED with 30 degree, infrared 3mm 940nm LED with 45 degree, infrared 3mm 940nm LED with 60 degree, infrared 3mm 940nm with 90 degree, infrared 3mm 940nm LED with 120 degree ect.
There are many other shapes or color of lens for your choose. Customized infrared LED are available
For the SMD LED 940nm LED,
We can supply dual-chip infrared LED, three-chip infrared LED, multi-chip infrared LED, high voltage LED, flashing infrared LED and variety of size SMD LED. For instance: 3528 SMD infrared 940nm LED, 2835 SMD infrared 940nm LED, 3014 SMD infrared 940nm LED, 1206 SMD infrared 940nm LED, 3020 SMD infrared 940nm LED.
There are also have many other shapes to choose, like the 5050 SMD infrared LED, the 5730 SMD infrared LED ect. You can choose any one of them for your requirement.
A brief history of granite mining
Granite is one of the most common natural rocks found on Earth's surface and has been known and used by humans since ancient times. Throughout history, various civilizations have utilized granite in impressive ways. For example, the pyramids built by the ancient Egyptians over 4,000 years ago, the temples of ancient Greece, the sacred structures of ancient India, and the Colosseum of Rome all showcase the enduring value of this stone.
In China, the use of granite dates back to the Neolithic Age, around 10,000 years ago. Archaeological sites such as the Huaikou Goosekou Stone Production Site in Shanxi Province reveal evidence of early granite mining and tool-making. Similar findings have also been discovered in Xiqiao Mountain, Nanhai, Guangdong. In Haicheng, Liaoning, a wooden megalithic structure from the late Neolithic period demonstrates the early use of granite. The famous granite stone carving horse in Xi'an Beilin, dating back to 424 BC, further highlights its historical significance. During the Han Dynasty, granite was used in tomb carvings, and in the Sui and Tang Dynasties, it continued to be a key material in monumental architecture.
By the Song Dynasty (960–1279), granite had become widely used in construction. A notable example is the 48-meter-high Kaiyuan Temple Tower in Quanzhou, Fujian, which is entirely made of granite. Additionally, over 50 stone bridges in Quanzhou were constructed using local granite during this time. From the Ming and Qing Dynasties onward, granite became essential in palaces, tombs, bridges, gardens, and public buildings.
Since the founding of the People’s Republic of China, the mining and processing of granite have experienced rapid growth, with its applications expanding significantly. Many major structures now feature granite extensively. For instance, the "People's Heroes Monument" in Beijing stands 37.94 meters tall, with a single stone weighing 120 tons. Other examples include granite monuments in Qingdao, Shandong; the Yuhuatai area in Nanjing; large granite sculptures along the Yellow River; and modern buildings in Lanzhou such as hotels, restaurants, offices, banks, and shopping centers. Over the past decade, the use of granite decorative panels has increased more than 500 times, reflecting its growing popularity in both residential and commercial settings.