免费无码一区二区三区A片不卡-免费无码一区二区三区蜜桃-免费无码一区二区三区蜜桃大-免费无码又爽又刺激高潮-免费无码又爽又刺激高潮的视频-免费无码又爽又刺激高潮视频

Welcome to the official website of Newopto Photoelectric Technology Co., Ltd!

Photodiode manufacturer

It has been established for 14 years,8000+Case witness
National Service Hotline:0755-81459333 / 18028767999
Current location:Home >News >產品資訊 >Characteristics and application of infrared LED lamp beads
Characteristics and application of infrared LED lamp beads

2019-12-16

The conventional infrared LED lamp bead is similar to the general visible LED lamp bead in appearance, but it emits infrared light. The voltage is generally about 1.4V, and the working current is generally less than 20mA. In order to adapt to different working voltage, the finite current resistor is often connected in series in the loop.

When the infrared LED lamp bead is used to control the corresponding controlled device, the control distance is proportional to the emission power. In order to increase the infrared emission tube working in the pulse state, because the effective transmission distance of the pulse light is proportional to the wind-induced current of the pulse, the emission distance of the infrared light can be increased only by increasing the peak IP as much as possible. The method to improve IP is to reduce the pulse duty ratio, that is, to compress the pulse width T, and to reduce the pulse duty ratio can also greatly increase the emission distance of low-power infrared light-emitting diodes. The power of ordinary infrared light-emitting diodes can be divided into three categories: low power, medium power and high power. In order to produce modulation light, only a pulse voltage of a certain frequency is added to the driving tube.

When the infrared light emitting diode emits infrared to control the controlled device, there are corresponding infrared photoelectric conversion elements in the controlled device, such as infrared receiving diode, infrared receiving head, photosensitive triode, etc.

There are two ways to transmit and receive infrared rays: direct and reflection. The direct light-emitting tube and the receiving tube are relatively placed at the two ends of the emission and the controlled object, with a certain distance between them; the reflective light-emitting tube and the receiving tube are in parallel, usually the receiving tube is always without light, only when the infrared light emitted by the light-emitting tube meets the reflector, the receiving tube receives the reflected infrared light to work. Double tube infrared emission circuit can improve the emission power and increase the working distance of infrared emission.According to the characteristics of infrared LED lamp beads, it can be widely used according to different wavelengths:
1. Wavelength: 808nm, suitable for medical devices, space optical communication, infrared lighting, solid laser pump light source;

2. Wavelength: 830nm, suitable for the automatic card swiping system of high-speed road (night vision system is the best, you can see a little red light on the tube core, the effect is better than 850nm);

3. Wavelength: 840nm, suitable for camera, color zoom infrared waterproof;

4. Wavelength: 850nm, suitable for camera, digital photography, monitoring, apartment intercom, anti-theft alarm, infrared waterproof;

5. Wavelength: 870nm, suitable for cameras in shopping malls and intersections;

6. Wavelength: 940nm, suitable for remote control, such as remote control of household appliances.

色婷婷综合久久久久中文 | 日本一卡二卡不卡视频查询 | √天堂资源中文www 性生交片免费无码看人 | 亚洲毛片不卡av在线播放一区 | 国产精品亚洲欧美大片在线看 | 久久国产劲暴∨内射新川 | 亚洲综合av永久无码精品一区二区 | 日本韩国三级观看 | 国产在线拍揄自揄拍无码视频 | 亚洲精品喷潮一区二区三区 | 国产精品免费拍拍拍 | 亚洲精品久久久久久久蜜桃臀 | 人妻熟妇乱又伦精品视频 | 色综合99久久久无码国产精品 | 久久精品人人爽人人爽 | 国产精品 高清 尿 小便 嘘嘘 | 色窝窝亚洲av网在线观看 | 国产成年无码久久久久下载 | 久久无码人妻丰满熟妇区毛片 | 2019日韩中文字幕mv | 国产精品亚洲综合色区韩国 | 米奇影音777第四色 亚洲不卡av不卡一区二区 | 国模欢欢炮交啪啪150 | 久久久噜噜噜久久熟女aa片 | 国产成人综合洲欧美在线 | 精品午夜福利在线观看 | 亚洲国产激情一区二区三区 | 精品无码av无码专区 | 久久精品人人做人人爽 | 国产农村一级特黄α真人毛片 | 亚洲久悠悠色悠在线播放 | 亚洲成人色区 | 97香蕉碰碰人妻国产欧美 | 国产成人啪精品视频免费软件 | 欧美日韩亚洲中文字幕一区二区三区 | 精品久久久久久无码中文字幕 | 成年人在线免费观看网站 | 日本一区二区三区免费高清 | 亚洲 日韩 欧美 成人 在线观看 | 国产欧美一区二区三区在线看 | 中文在线а√天堂官网 |

微信:18028767999

送样,定制联系

产品规格书发送