国产福利人人干,日韩九九久久国产精品,思思热又粗又长黑白,制服丝袜青青在线,亚洲精品国自产在线看,亚洲天堂久久,亚洲欧美第一页,大香蕉伊在线久在线,日本SSS大片

Shenzhen Tiancheng Lighting Limited company to welcome you! National Service Hotline:4008-320-328
中文 | English
Set Homepage   Join collection

News

Industry dynamics

Current page:Home >> News >>  Industry dynamics

[5050 lamp beads] What is the calculation formula of the lit bead flowing value?

[5050 lamp beads] What is the calculation formula of the lit bead flowing value?
Time:2022-10-09 00:00:00 | view:

[5050 lamp beads] What is the calculation formula of the lit bead flowing value?

5050 lamp beads LED lumen value calculation formula?

: According to the spectral radiation flux φ (λ), the light flux formula is obtained:

φ \u003d km ■ φ (λ) GV (λ) dλ

formula, V (λ) - relative spectral light vision efficiency;The maximum value of KM -radiation spectral lighting performance is LM/W.In 1977, the KM value was determined by the International Metrology Commission to 683LM/W (λm \u003d 555nm).

For 5050 lamp beads, is the liquidity of LED better and better?

Answer: In principle, the so -called LED lumen is the so -called optical flux. The number of lumens emitted by 1W is also luminous efficiency. Therefore, the higher the optical flux created by 1W represents the better the lighting efficiency.However, the increase in light flux is achieved by increasing the current. This may bring 2 negative effects: 1. The current is easy to cause light decay.2. After the optical flux is high, the color rendering will decrease.These two indicators are the most critical indicators to measure LED.
 
QR code
Pay attention to us
Interlink: 深圳市天成照明有限公司 深圳市天成照明有限公司
Copyright 2016 Shenzhen Tiancheng Lighting Co. Ltd. Copyright
 
QQ Online
Free consultation hotline
4008-320-328
上栗县| 孟村| 华宁县| 剑河县| 萍乡市| 镶黄旗| 罗甸县| 余江县| 阿图什市| 通山县| 乌拉特前旗| 祁东县| 平邑县| 乌审旗| 安康市| 博爱县| 正定县| 赣州市| 西贡区| 宜兴市| 金塔县| 武汉市| 富宁县| 巴马| 盱眙县| 维西| 宿松县| 宣恩县| 双桥区| 搜索| 太康县| 永康市| 济阳县| 江永县| 丰顺县| 巨野县| 凤庆县| 商洛市| 旬阳县| 黄骅市| 娄底市|