Most of the traditional lighting sources use lamps and incandescent bulbs. Basic large-scale lighting fixtures emphasize the control of light distribution. In the case of simply considering luminous efficiency, fluorescent lamps and high-intensity discharge lamps (HID: High Intensity Discharge) are excellent, but high-intensity gases. The electrical dimming range of the discharge lamp is very narrow. In contrast, when the optical system of a fluorescent lamp is irradiated to a specific field, if it is compared with a tungsten wire of a halogen lamp, its light-emitting portion is very large, and it is impossible to converge light from the light source with high efficiency.

In addition, large-scale lighting fixtures require 0~100% smooth dimming. Generally, Thyristor is used to control the voltage of the bulb to achieve the dimming effect by changing the driving voltage of the bulb. Therefore, the light source of the large lighting fixtures almost all use halogen lamps. . Large-scale lighting fixtures do not require uniform illumination of the object. Usually, multiple illumination lamps are used according to the requirements to change the illumination direction and illumination range. Therefore, most of the large-scale lighting fixtures are provided with an illumination range adjustment mechanism, and the adjustment of the illumination range is divided into: changing the bulb and the lens. Interval; converging light to the aperture, changing the focal length of the lens group of the projected opening. In fact, it must be used according to the type and use of the lamp.

In recent years, the earth's environmental protection sounds are rising day by day. Large-scale lighting fixtures also require energy saving and carbon dioxide emission reduction. Therefore, foreign lighting manufacturers have abandoned the traditional low-efficiency incandescent bulbs and switched to high-efficiency new-generation LED light sources. In 1990, Professor Nikko Nakamura developed high-luminance blue light-emitting diodes. After the introduction of the white light-emitting diode illumination source of the YAG: Yttrium Aluminium Garnet phosphor in 1996, it was immediately regarded as The next generation of light sources has become the focus of global attention.

White light-emitting diodes have improved luminous efficiency and high power. In addition to general indoor lighting , they are also used as light sources for large-scale lighting fixtures. It is generally considered that the dimming characteristics of LEDs are excellent. When the dimming action is performed, the chromaticity changes and reaction characteristics are more acute than those of conventional halogen lamps. However, LED light sources for large-scale lighting fixtures must solve the following problems: LED single-lens beams Very few; blue LED combined with yttrium aluminum garnet phosphor white light-emitting diode, its light distribution difference can easily cause color unevenness on the illuminated surface. When a plurality of LEDs are used, the distribution between the LEDs is very large. Then this article will take large-scale lighting fixtures as an example to further explore the optical design of high-power LED lighting fixtures.

LED lighting design

Lamp structure


When an optical system is constructed using a halogen lamp as shown in Fig. 1, most of the light is concentrated by an elliptical mirror to be projected at the opening. In the case of light-emitting diodes, the light beam per unit light-emitting diode is small, and it is necessary to use several to several tens of light-emitting diodes when used as an illumination source. Therefore, light control by a plurality of light sources is very important.

Specification:
1. Current:10A,Voltage:125V
2. Material: 100% pure new PC, brass terminal w
3. Certification:UL&CUL. 
4. Different colors as customized. 

5. OEM service offered here


Product application:
â– Products for commercial,household,lighting
Product features:
â– Good contact
--The contact point composite silver layer is designed to reduce
the contact resistance and reduce the temperature rise.
â– Ultra high strength,impact resistance and thermal stability
--The upper cover is made of high quality polycarbonate and the
bottom shell is made of PA6
â– Chemical corrosion resistance
-- Fingerprint-resistant zinc plated mounting brackets
â– Grounding
--One-piece grounding desig

Gang Switch UL

Gang Switch UL,Wall Gang Switch UL,Electrical Gang Switch UL,Electrical Push Gang Switch UL

Hoojet Electric Appliance Co.,Ltd , https://www.hoojetgfci.com