From the section, the surface consists of a series of zigzag grooves, and the central part is an elliptical arc. Each groove has a different angle from the adjacent groove, but both concentrate the light to form a central focus, which is the focus of the lens. Each groove can be seen as a separate lens that adjusts the light to parallel or concentrated. This lens also eliminates partial spherical aberrations.
Yanneng Optoelectronics will gradually introduce Fresnel LED track lights and Fresnel LED spotlights in its own Fresnel lens technology advantages, which will increase the existing light output by 15%, heat dissipation by 20%, and greatly improve the LED lights. Life and light output. LED lighting fixtures are more in line with people's psychological and physiological needs and aesthetics.
A. Small volume: Optimized the lumen space of the LED lamp, reducing the volume ratio of the lens;
B. High power density: Allow more heat dissipation space for the drive power supply and increase the heat dissipation area;
B. High luminous efficiency: Minimize the optical medium and increase the light output;
C. No glare: The innovative Fresnel technology makes the illuminance and light intensity evenly distributed;
D. Lightweight: The weight of the whole lamp is reduced, saving transportation costs:
E. Integration: A larger space can be integrated into the power supply and ensure the passage of product certification;
F. Customization: Customized integrated or external power supply solutions according to customer's market and demand. Perfect matching effect and unique support will win customers' superior competitiveness.
Dual-band WiFi module refers to the WiFi module that supports both 2.4GHZ and 5GHz bands. The dual-band WiFi module can operate in the 5Ghz band, which is much cleaner and can easily avoid interfering with each other. The advantage of 2.4G is that it has good ability to penetrate the wall, and the disadvantage is that it is easy to be disturbed. The advantages of 5G are strong anti-interference ability, wide band width, high throughput rate, and strong scalability, but the disadvantage is that 5G is only suitable for indoor small-range coverage and outdoor bridge, and the attenuation effect of various obstacles on it is much larger than 2.4g.
Dual-band WiFi module has a stronger and more stable Wifi wireless signal, higher transmission speed, and can make wireless devices more power-saving, to meet the future high-definition and big data wireless transmission needs.
When selecting a dual-frequency WiFi module, we should pay attention to these parameters of the WiFi module: size, package, frequency range, data rate, transmission rate, transmission distance, communication interface, power supply voltage, antenna interface, etc.
Dual frequency WiFi module can well meet the functional needs of users, increase the competitiveness of the product, while the WiFi module is easy to use, can shorten the user product development cycle, speed up the product market! Users can make choices according to actual needs!
Choosing a dual-band WiFi module may need to pay attention to the following points:
(1) Consider the transmission power of the dual-frequency WiFi module
The transmitting power of the WIFI module is generally about 18dBm, and the transmitting power of the high-power WIFI module is about 28dBm.
(2) Transmission rate
Consider whether the dual-band WiFi module supports MIMO technology (that is, allows multiple antennas to send and receive multiple spatial streams simultaneously)
(3) Consider the application interface that dual-band WiFi modules can provide, which is also very important.
(4) According to the requirements of the application scenario to choose the dual-band WiFi module, not the higher the configuration, the better, the application is good, excess waste!
Dual Band Router Module,Dual Band Wifi Module,Dual Band Router Embedded Wifi Module,Gigabit Ethernet Router Module
Shenzhen MovingComm Technology Co., Ltd. , https://www.szmovingcomm.com