What is Spectral Power Distribution (SPD)
Spectral power distribution (SPD), in the context of the lighting industry, is the measurement and representation of the power or intensity of light at each wavelength in the visible spectrum. It provides crucial information about the color properties and overall spectral composition of a light source.
The SPD curve, which is a graph illustrating the distribution of power across different wavelengths of light, is used to analyze and understand the characteristics of a light source. By examining the SPD curve, one can assess the color rendering capabilities, color temperature, and overall quality of the light emitted by a lamp or lighting system.
您可能也會感興趣
- 吸頂式 PIR 人體感應器，配備乾觸點繼電器輸出
- 12/24VDC 或 12/24VAC 低電壓供電
- 用於 EMS、HVAC 和建築控制輸入的 COM、NO 和 NC 隔離繼電器觸點
- 低壓直流嵌入式天花安裝微波人體感應開關
- 12 VDC / 24 VDC 輸入，支援 10-30 VDC 範圍
- 最大工作電流 10A，配備可調節延時、光感閾值及靈敏度
- 高負載嵌入式天花安裝微波人體感應開關
- 100-265 VAC 市電輸入，10A 型號
- 5.8 GHz 微波感應，配備可調節延時、光感閾值及靈敏度
- 嵌入式天花安裝微波人體感應開關
- 100-265 VAC 市電輸入，5A 型號
- 5.8 GHz 微波感應，配備可調節延時、光感閾值及靈敏度
- 適用於 220V 電源的天花安裝 RZ037 PIR 被動式紅外線佔空感應調光開關
- 最大工作電流 3A，額定負載 660W
- LUX 按鈕控制光線感應器開關及用戶設定之調光亮度
- 適用於 110V 電源的天花安裝 RZ037 PIR 被動式紅外線佔空感應調光開關
- 最大工作電流 3A，額定負載 330W
- LUX 按鈕控制光線感應器開關及用戶設定之調光亮度
- 低壓直流天花安裝微波人體感應開關
- 12 VDC / 24 VDC 輸入，支援 10-30 VDC 範圍
- 最大工作電流 10A，配備可調節延時、光感閾值及靈敏度
- 高負載吸頂式微波動態感應器開關
- 100-265 VAC 市電輸入，10A 型號
- 5.8 GHz 微波感應，配備可調節延時、光感閾值及靈敏度
- 吸頂式微波動態感應器開關
- 100-265 VAC 市電輸入，5A 型號
- 5.8 GHz 微波感應，配備可調節延時、光感閾值及靈敏度
- 低壓直流嵌頂式 PIR 動態感應器開關
- 12 VDC / 24 VDC 輸入，支援 10-30 VDC 範圍
- 最大工作電流 10A，具備可調式時間延遲、光照度閾值及靈敏度
- 高負載嵌頂式 PIR 動態感應器開關
- 100-265 VAC 市電輸入，10A 型號
- 360度偵測，具備可調式時間延遲、光照度閾值及靈敏度
- 嵌頂式 PIR 動態感應器開關
- 100-265 VAC 市電輸入，5A 型號
- 360度偵測，具備可調式時間延遲、光照度閾值及靈敏度
- 用於室內開關照明控制的無線開關及接收器套裝
- 100-230VAC，50/60Hz 接收器，額定電流 5A
- CR2032 電池供電無線開關，採用 2.4GHz 通訊
- 佔用感應（自動開啟/自動關閉）
- 12–24V DC (10–30VDC)，最高 10A
- 360° 覆蓋，直徑 8–12 米
- 延遲時間 15 秒至 30 分鐘
- 光感應器 關閉/15/25/35 Lux
- 高/低靈敏度
- 自動開啟/自動關閉佔用模式
- 100–265V AC，10A（需接零線）
- 360° 全方位覆蓋；8–12 米偵測直徑
- 延遲時間 15 秒至 30 分鐘；Lux 關閉/15/25/35；靈敏度 高/低
- 自動開啟/自動關閉佔用模式
- 100–265V AC，5A（需接零線）
- 360° 全方位覆蓋；8–12 米偵測直徑
- 延遲時間 15 秒至 30 分鐘；Lux 關閉/15/25/35；靈敏度 高/低
- 100V-230VAC
- 傳輸距離：最遠 20 米
- 無線動態感應器
- 有線控制
The SPD curve allows for a precise description of color and serves as a starting point for quantitative analyses of color. It provides data that helps in understanding how different lighting conditions can affect the perception of color. By comparing the SPD curves of different light sources, one can evaluate the accuracy and consistency of the color rendering.
從 Rayzeek 動態感測器產品組合中獲得靈感。
找不到您想要的產品？別擔心。總有其他方法可以解決您的問題。也許我們的其中一個產品組合可以幫到您。
常見問題
What Is SPD in Lighting
SPD, which stands for Spectral Power Distribution, refers to the distribution of power across different wavelengths of light emitted by a light source. The visible white light that we perceive is composed of a range of colors, spanning from violet (380nm) to red (760nm).
How Is Spectral Power Distribution Measured
The measurement of spectral power distribution (SPD) involves the use of a spectrophotometer. By analyzing the SPD, it is possible to derive both the luminance and chromaticity of a color, which allows for an accurate description of the color within the CIE system. Additionally, the SPD can be linked to other color measurement systems.
What Is the Spectral Distribution of LED Lights
The spectral distribution of LED lights is determined by the spectrum of spontaneous emission, which usually follows a Gaussian shape. LED lights in the 1300-1500nm range can have spectral widths ranging from 50 to 180nm. Specifically, the spectral width of an LED with a wavelength of 1300nm is being analyzed.
What Is SPD Curve
SPD curves are obtained by using a Spectroradiometer, which is specifically designed to measure the spectral density of an illuminant. These curves provide information about the relative intensity of a light source at various defined steps across the visible region of the electromagnetic spectrum, typically ranging from 380nm to 780nm.
