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3528贴片式大功率LED设计的光学工作原理

3528贴片式大功率LED设计的光学工作原理

LED标志投影灯的定义和原理是什么?

LED英语单词的缩写,主要意义:LED=LightEmitting Diode,发光二极管是能够将电能转换为可见光的固体半导体器件,可以将电直接转换为光。

LED广告投影灯是凯西欧新开发的照明器具,既可以利用LED的RGB和发光性能进行照明,也可以将公司的LOGO显示在墙上。

投影灯的原理

动态广告图像投影灯、广告投影灯、LOGO投影、图案图像投影灯系列是新的广告媒体。属于投影广告的一种。利用高功率投影装置的光学投影原理,配合高亮度光源和多种动态效果的附件,将所制作的灯的广告内容投影到顾客需要的投影广告面上,形成极具视觉冲击力的室外或室内动态广告效果。作为LED英语单词的缩写,主要定义为:LED=LightEmitting Diode,发光二极管是能够将电能转换成可见光的固体半导体器件,并且可以将电直接转换成光。

投影灯的原理

动态广告图像投影灯、广告投影灯、LOGO投影、图案图像投影灯系列是新的广告媒体。属于投影广告的一种。利用大功率投影装置的光学投影原理,采用高亮度光源,配合多种动态效果附件,将所制作的灯的广告内容投影到顾客所需的投影广告面上,形成富有视觉冲击力的室外或室内动态广告效果。嗯,如果买了LED灯进行家庭装修的话,可以看这个网站。我之前在那个网站上选的,里面的灯很好。价格便宜,质量也便宜。我一年半没用过。我建议你去这个网站看看。

网站:www.bdc8。com/sd.将htm复制到浏览器上粘贴。

。。。

3528贴片式大功率LED设计的光学工作原理

昨天看了这样的文章,说LED的存在是12大问题,我希望对LED理解的人提出意见

作者没有提意见,我看他一点也不懂。

1.这篇文章的作者肯定是在90年代使用的led灯珠,早就没有这个问题了。

2.没有听说谁遭遇过这样的智障。

没有保护是谁的错。的

4.这当然是各厂家的设计问题,而且LED可以控制发光角度,所以很方便

光学设计,这不是优点。

5.激光规格旧,低功率绝对不存在这个问题。况且现在有很多解决的方法。LED的亮度绝对是均匀的。远超钠灯。

6.奇怪,说什么不太热,LED的热问题一直是LED灯具的核心问题,寿命都取决于热。不要装聋作哑。

七八胡说。现在销售的是150lm/W的珠子,现在在日本,背照灯使用的是90lm/W的珠子。

9,目前寿命3万小时左右,但比节能灯要贵得多。节能灯不超过8000小时。

10.电源是问题,经常是大功率LED灯具的最大问题。但是,正在慢慢解决。

11.笨蛋什么都没对我说。这是LED的优点吗。

12.现在基本上是6元,进口必须超过10元。6盏灯1000?哈哈哈。。

真奇怪。光从照明行业来说,这样的缺陷确实存在,但并不是看不到开发者的水平。从其他行业来看,比如LCD,他是宝贝,天衣是无缝的,没有他是不行的。我觉得现在已经成熟了,但是技术上还欠缺。这篇文章是十年前的吧。LED的概要

LED(Light Emitting Diode)是发光二极管,是能够将电直接转换为光的固体半导体器件。LED的心脏是半导体的晶圆,晶圆的一端安装在一个支架上,一端负极,另一端连接到电源的正极,整个晶圆用环氧树脂封装。半导体晶片由两个部分组成,一部分是p型半导体,其中空穴是主导的,另一端是N型半导体,其中主要是电子。然而,当这两个半导体连接在一起时,在它们之间形成了“p‐N结”。当电流通过导线作用在该晶片上时,电子被推到p区域,在p区域电子与空穴复合,以光子的形式放出能量是LED发光的原理。光的波长,即光的颜色由形成p-N结的材料决定。

LED历史记录

50年前,众所周知半导体材料产生光线的基本知识,最初的商业二极管是1960年产生的。LED是英语light emitting diode(发光二极管)的缩写,其基本结构是电致发光的半导体材料,放在有引线的架子上,用环氧树脂密封周围,也就是说用固体包装,有助于保护内部芯线,所以LED的耐震性能很好。

发光二极管的核心部分是由p型半导体和N型半导体构成的晶片,p型半导体和N型半导体之间的p?有被称为N结的过渡层。在一些半导体材料的pN结中,当注入的少数载波与多个载波复合时,多余的能量以光的形式释放,电能直接转换成光能。向pN结施加逆电压时,少数载流子难以注入,不会发光。使用这种注入电致发光原理制造的二极管被称为发光二极管,通称LED。当处于正动作状态(即两端施加正电压)时,当电流从LED阳极流向阴极时,半导体晶体从紫外线到红外线发出不同颜色的光线,光的强弱与电流有关。

当初,LED被用作仪表的指示光源,之后,各种光色的LED被广泛应用于交通信号灯和大面积显示器,产生了经济效益和社会效益。以12英寸的红色交通信号为例,美国原本以寿命长、效率低的140瓦白炽灯泡为光源,产生2000流明白光。经过红色滤镜后,光损失了90%,只剩下200流明的红光。在新设计的灯具中,Lumileds公司采用18个红色LED光源,耗电14瓦,包括电路损耗,可以产生相同的光效。汽车信号灯也是LED光源应用的重要领域。

一般的照明需要白色光源。1998年成功开发了白光LED。该LED是通过结合GaN芯片和Itrium铝石榴石(YAG)制作的。GaN芯片蓝光(λp=465nm,Wd=30nm),高温烧结制备的含Ce3+的YAG荧光体在该蓝光激发下发出黄色光,峰值550nm。蓝色LED基板约200种?安装在将500nm YAG的树脂薄层混合的碗状反射室中。从LED基板发射的蓝色光的部分被荧光体吸收,另一种蓝色光可以与从荧光体发射的黄色光混合以获得白光。现在,对于InGaN/YAG白色LED,通过使YAG磷光体的化学组成变化,调整荧光体层的厚度,能够得到色温3500~1000K的各色白光。通过这种蓝色LED获得白光的方法,因为结构简单、成本低、技术成熟度高,所以使用得最多。

上世纪60年代,科学技术人员利用半导体pN接合发光的原理,开发了LED发光二极管。当时开发的LED材料是GaASp,发光颜色是红色。经过近30年的发展,现在众所周知的LED可以发出红、橙、黄、绿、蓝等多种色光。但是,照明所需的白光LED仅近年来有所发展,这里就向读者介绍照明用白光LED。

LED Summary

LED (Light Emitting Diode), light-emitting diode, is a solid state semiconductor devices, which can be directly converted into electricity to light. LED is the heart of a semiconductor chip, the chip is attached to one end of a stent, is the negative side, the other end of the power of the cathode, the entire chip package to be epoxy resin. Semiconductor chip is composed of two parts, part of the p-type semiconductor, it inside the hole-dominated, the other side is the N-type semiconductor, here is mainly electronic. But linking the two semiconductors, among them the formation of a “pN junction.” When the current through the wires role in this chip, will be pushing e-p, p zone in the hole with electronic composite, and then to be issued in the form of photon energy, and this is the principle of LED luminescence. The wavelength of light that is the color of light, is formed by the pN junction of the decisions of the material.

LED history

50 years ago, people have to understand semiconductor materials can produce light of the basic knowledge, the first commercial diodes in 1960. English is the LED light emitting diode (LED) acronym, and its basic structure is an electroluminescent semiconductor materials, placed in a wire rack, then sealed with epoxy resin around, that is, solid package, Therefore, the protection of the internal batteries can play the role of line, so the seismic performance LED good。

LED is the core of the p-type semiconductor and components of the N-type semiconductor chips, the p-type semiconductor and N-type semiconductor between a transition layer, called the pN junction. In some semiconductor materials in the pN junction, the injection of a small number of carrier-carrier and the majority of the extra time will be in the form of light energy to release, thus the power to direct conversion of solar energy. pN junction on reverse voltage, a few hard-carrier injection, it is not luminous. This use of injection electroluminescent diodes is produced by the principle of light-emitting diodes, commonly known as LED. When it in a positive state of the work (that is, at both ends with forward voltage), the current flows from the LED anode, cathode, semiconductor crystals on the issue from the ultraviolet to infrared light of different colors, light and the strength of the currents.

Instruments used for the first LED light source instructions, but all kinds of light colored LED lights in traffic and large screen has been widely applied, have a very good economic and social benefits. The 12-inch red traffic lights as an example, is used in the United States have long life, low-efficiency 140 watt incandescent lamp as a light source, it produced 2,000 lumens of white light. The red filter, the loss-90 percent, only 200 lumens of red light. In the light of the new design, Lumileds companies have 18 red LED light source, including the loss of circuit, a total power consumption of 14 watts to generate the same optical effect. Automotive LED lights is also the source of important areas。

For general lighting, people need more white light sources. The 1998 white LED successful development. This is the GaN LED chip and Yttrium Aluminum Garnet (YAG) package together cause. GaN chip of the Blu-ray (λ p = 465nm, Wd = 30nm), made of high-temperature sintering of the Ce3 + YAG phosphors excited by this Blu-ray after irradiating a yellow, the peak 550 nm. Blue-chip installed in the LED-based Wanxing reflection in the cavity, covered with a resin mixed with YAG thin layer, about 200-500 nm. LED-based tablets issued by the Blu-ray absorption part of the phosphor, the phosphor another part of the Blu-ray and a yellow light mixed, can be a white. Now, the InGaN/YAG white LED, YAG phosphor by changing the chemical composition of the phosphor layer and adjust the thickness of the 3500-10000 K color temperature can be colored white. This blue LED through the method by white, constructed simple, low-cost, high technology is mature, so use the most.

In the 1960s, the use of science and technology workers semiconductor pN junction of The principle of developing a LED light-emitting diodes. At that time, the development of LED, the materials used are GaASp, its luminous color is red. After nearly 30 years of development, and now we are very familiar with the LED, has been sent to red, orange, yellow, green, blue, and other shade. However lighting necessary for white LED light only in recent years to develop, readers here to tell us about lighting with white LED.我参观过南昌晶能光电。据介绍,LED灯的价格是400元,具体情况我不知道。LED的亮度和寿命应该没有问题。关键是生产量少。主要政府购买的多,LED有发展趋势。他知道的很多参数不准确。1-3瓦进口灯的珠子是3美元。我把灯珠卖给了他。