LED的塑膠封裝與燈罩設計

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1 白光 LED 的光學模擬 2011/3/4 於清華大學工科館 NE69 林世穆光學博士台北科技大學光電系 1

2 Basic Radiometric parameters Radiant Power 輻射通量 (Flux) The total power emitted by the source. Watts Radiant Intensity 輻射強度 Irradiance 輻射照度 The flux per unit solid angle. The flux per unit area incident upon a surface. Watts /sr Watts /m 2 Radiance 輻射亮度 (Brightness) the flux per solid angle per unit area. Watts /m 2 -sr 2

3 Luminous Flux (ΦV) The time rate of the flow of radiant energy, evaluated in terms of standardized human visual response (V λ): Where ΦV is in lumens, Φ is in watts per nm (nanometer), λ is in nanometers, V λ is the photopic response function, and K is the maximum spectral luminous efficiency in lumens per watt. K has a value 683 and is derived from the SI definition of luminous intensity. 3

4 Illuminance (EV) The aerial density of the luminous flux incident at a point on a surface: EV = d Φ/ da If there are 100 lumens incident on a surface (uniformly) of 1 m 2, then the illuminance is 100 Lux. 4

5 Luminous Intensity (IV) The luminous flux per unit solid angle in a given direction (of a point source): IV = d Φ /d ω 5

6 Luminance (LV) Luminous flux emitted from an area (da), into a direction θ, within a solid angle dω 6

7 Luminance vs. Brightness In practice, luminance is often misunderstood as brightness; however, it is important to understand that luminance is an objective measure, whereas brightness is subjective and depends on the subject and the environment. 7

8 Luminance (LV) The intensity (I) is the product of the luminance (LV) and projected area of the source (da cosθ). Introducing optics cannot increase the luminance of a given system. If there is no light loss is known as luminance conservation. 8

9 Basic Photometric parameters Flux (luminous power) 光通量 (Luminous) Intensity 發光強度 Illuminance 光照度 Brightness 亮度 (luminance) The total power emitted by the source. The flux per unit solid angle. The flux per unit area incident upon a surface. the flux per solid angle per unit area. Lumen (lm) 流明 =Watts Candela (cd) 燭光 =lumen/steradian Lux 勒 =lumen/m 2 Nit 尼特 = W/m 2 -sr =candela/m 2 9

10 LED 的基本參數總光通量光形 ( 角分布曲線 ) 光譜 ( 發光波長之權重 ) 色溫演色性 10

11 Profile Setting Step1: 由規格書中取得光強分布曲線 Step2: 在極座標上定義三個參考點 11

12 Profile Setting Step3: 依序點出光強曲線位置 12

13 Spectrum Setting Step4: 由規格書中取得光譜分布曲線 Step5: 在光譜圖上定義兩個參考點 13

14 Spectrum Setting Step6: 依序點出光譜曲線之位置 14

15 Spectrum Setting Step7: 設定預取樣之點數 Step8: 開始進行取樣動作 15

16 Export to TracePro Step7: 建立種類與檔案名稱 Step8: 設定欲取樣之點數 Step9: 設定光源之光通量或輻照度 16

17 Surface Source in TracePro 17

18 Surface Source in TracePro 18

19 Surface Source Setting 19

20 Everlight Shuen Series LED 20

21 Product Specification 21

22 Everlight 億光之白光 LED 炫系列 Shuen [Xuan] is the English translation for the Chinese word meaning Bright and Shiny. Both words are relevant descriptions of this Everlight LED series. The modern, adaptive Chinese definition of the word represents that which is New, Extravagant, and Highly Sought After. 22

23 白光 LED 炫系列之 Binning 23

24 Spectrum of Cool-White LED 24

25 Spectrum of Neutral-White LED 25

26 Spectrum of Cool-White LED 26

27 Everlight Shuen Series LED 27

28 True Color and Spectrum of Cool- White LED under TracePro 28

29 CIE-xy and CCT of Cool-White LED under TracePro 29

30 CIE-uv and CCT of Cool-White LED under TracePro 30

31 True Color and Spectrum of Neutral- White LED under TracePro 31

32 CIE-xy and CCT of Neutral-White LED under TracePro 32

33 CIE-uv and CCT of Neutral-White LED under TracePro 33

34 True Color and Spectrum of Warm- White LED under TracePro 34

35 CIE-xy and CCT of Warm-White LED under TracePro 35

36 CIE-uv and CCT of Warm-White LED under TracePro 36

37 冷白中白暖白 37

38 38

39 calculating Color-Rendering Indices Flow chart for calculating Color-Rendering Indices Test Method Corrected Results Daylight Series Calculator 39

40 Flow chart for calculating color-rendering indices Test Light source CCT Ref. Light source Chromatic Adaptation Test samples Ti, t U*V*W* Ti, r U*V*W* Delta Ei Ri Ra 40

41 CRI Calculation Method 1. 計算待測光源頻譜的色座標 CIE 1931 xy 41

42 CRI Calculation Method 1. 計算待測光源頻譜的色座標 CIE 1931 xy X Y Z k x y

43 CRI Calculation Method 2. 計算 CIE 1960 uv u v Chromatic adaptation c d 清華大學能源與環境研究中心 43

44 CRI Calculation Method 4. 求出待測光源之 CCT, 尋找合適的標準光源 5. 利用 1~4 點, 可以求出標準光源與待測光源之 u,v,c,d, 分別定義在下方標準光源 : 待測光源 : 清華大學能源與環境研究中心 44

6. 標準光源與待測光源之 u,v,c,d u r v r c r d r 7000K 0.1955 0.3087 2.3228 2.

45 6. 標準光源與待測光源之 u,v,c,d u r v r c r d r 7000K u t v t c t d t Sbm 標準色樣板 No.1~8 45

46 Test Method 8. 以待測光源照射色樣板 No.1~8 之結果 46

47 9. 計算 No.1~8 反射光譜之 u i, v i, c i, d i Test Samples X ti Y ti Z ti k u ti v ri c ti d ti No No No No No No No No

48 10. 計算 No.1~8 反射光譜之 u i, v i Test Samples u i ' v i ' No No No No u r v r c r d r 7000K No No u t v t c t d t No Sbm No

49 Test Method 11. 計算 No.1~8 反射光譜之 1964 U*V*W* 座標系標準光源 Ti, r: 待測光源 Ti, t: 49

50 Sbm6 D7000 Test Samples U t,i * V t,i * W t,i * U r,i * V r,i * W r,i * No No No No No No No No 清華大學能源與環境研究中心

51 Test Method 12. 計算 Euclidean distance E i 13. 計算 special color-rendering index 14. 計算 general color-rendering index 51

52 Test Samples E i R i R a No No No No No No No No

53 Daylight Series Calculator 53

54 Daylight Series Calculator 54

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學校照明節能改善參考手冊第一章前言... 1 1.1 手冊目的...1 1.2 手冊範圍與內容...2 第二章照明的基本概念... 3 2.1 光的基本概念...3 2.2 常見重要名詞...5 2.2.1 光

學校照明節能改善參考手冊第一章前言... 1 1.1 手冊目的...1 1.2 手冊範圍與內容...2 第二章照明的基本概念... 3 2.1 光的基本概念...3 2.2 常見重要名詞...5 2.2.1 光學校照明節能改善參考手冊第一章前言... 1 1.1 手冊目的...1 1.2 手冊範圍與內容...2 第二章照明的基本概念... 3 2.1 光的基本概念...3 2.2 常見重要名詞...5 2.2.1 光源...5 2.2.2 色溫 (color temperature)...6 2.2.3 演色性