国国产日韩欧美一区二区久久精品_大伊香蕉av最新播放东京热_人妻少妇视频中文字幕_日本一区黄色片欧美_国产一级黄色片在线视频_人成18亚洲资源在线_男女爱做网站免费_网站大全黄免费_两个人的视频WWW免费高清中文_100款禁用流氓软件网站APP

Language: 中文版 ∷? 英文版
Your location: Home > News > Company new >

Company new

What's the LED general techical terms?

  • Brightness
    Often used incorrectly with respect to illumination as a synonym for luminous flux, an objective measurement of the visible power of a light source. The term is correctly used when describing screen brightness in a display or television

  • Color Rendering
    A general expression for the effect of a light source on the color appearance of objects.

  • Color Rendering Index (CRI)
    A measure of the degree of color shift objects undergo when illuminated by the light source as compared with those same objects when illuminated by a reference source of comparable color temperature. The reference source has a CRI of 100.

  • Color Spectrum / Visible Spectrum
    The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye, typically between 390nm and 750nm.

  • Color temperature
    The description used to describe the effect of heating an object until it glows incandescently, the emitted radiation, and apparent color, changes proportional to the temperature; easily envisioned when considering hot metal in a forge that glows red, then orange, and then white as the temperature increases.

  • Directional Light Source
    A light source that emits light only in the direction it is pointed or oriented.

  • Efficacy
    The light output of a light source divided by the total electrical power input to that source, expressed in lumens per watt (lm/W).

  • Flux / Luminous Flux
    Luminous flux is the measure of the perceived power of light, adjusted to reflect the varying sensitivity of the human eye to different wavelengths of light.

  • Forward voltage
    A widely accepted printed circuit board (PCB) material which is fiberglass reinforced epoxy laminates that are flame retardant.

  • Goniophotometer
    A photometric device for testing the luminous intensity distribution, efficiency, and luminous flux of luminaires.

  • Lumen (lm)
    The international (SI) unit of luminous flux or quantity of light and equals the amount of light that is spread over a square foot of surface by one candle power when all parts of the surface are exactly one foot from the light source. For example, a dinner candle provides about 12 lumens.

  • Lumen Maintenance
    The luminous flux at a give time in the life of the LED. This is expressed as a percentage of the intial luminous flux.

  • Lumen Maintenance Curve
    A graph illustrating the predicted average light output behavior over time of a single LED or solution.

  • Luminous Efficiency
    The percentage of total lamp lumens that a lighting fixture, luminaire, or system emits, minus any blocked or wasted light.

  • Power Factor
    The active power divided by the apparent power (i.e., product of the rms input voltage and rms input current of a driver).

  • Ultraviolet (UV)
    Electromagnetic radiation with wavelength shorter than that of visible light.

  • Ingress Protection grade(IP grade)
    IP grade is that the lamps was graded according to their dust-proof, anti-moisture characteristics .it was composed with two numbers, the first number represents the dust-proof and foreign objects intrusion degree of the lamp (0-6 grade),the second number represent the anti-moisture and waterpoof degree of the lamp (0-8 grade), the larger the number, the higher level of protection.


CATEGORIES

CONTACT US

Contact: Manager zhang

Phone:+86-755-23108420

Tel: +86 13662228402

Email:cruse@163.com

Add: Building A, Hubin Science and Technology Park, Xintian Community, Fuhai Street, Baoan District, Shenzhen, China

WeChat qr code close
WeChat qr code