Product Information for High CRI and Special Color Rendering

for General Lighting Applications

Available color ranks for the special color rendering products are shown in Fig. 5.

Fig 5: Color ranks 757 series (left) COB series (right)

Fig. 4: Product list for the special color rendering options in 757 and COB series.

Contacthttp://www.nichia.co.jp/en/contact/contact.html

Both the 757 and COB series have products available in these special color rendering options and the high CRI (R95).

High CRI （R95） and Special Color Rendering Product Lineups

Meat

High CRI

Meat (richer red hue)Produce

(e.g. Vegetable)

White Fabrics

M2/Rs020

0.2W 2.5～73W 2.5～45W 12～85W757D-V1 757G 757G-F1 757DR-V1

1W757GR COB B-V2 COB B-V3 COB Z-V1

R95

M6

M3/Rs030

M7/Rs075

0.300.25

0.30

0.35

0.40

0.45

0.50

0.35 0.40 0.45 0.50[x]

[y]

■Meat ：-M2/Rs020 ■Meat(richer red hue) ：-M6■Produce(e.g. Vegetable) ：-M3/Rs030 ■■White Fabrics ：-M7/Rs075

sw50

c5

csw52290

sm405jsm403j sm355j

sm353jsm353jsm323j

sm303jsm303j

sm325jsm305j

sw40sw35

sw30sw27

Blackbody Locus

0.25

0.30

0.35

0.40

0.45

0.50

0.30 0.35 0.40 0.45 0.50[x]

[y]

■Meat ：-M2/Rs020 ■Produce(e.g. Vegetable) ：-M3/Rs030 ■White Fabrics ：-M7/Rs075

sm50x

smc5x

sm40xjsm35xj

sm32xjsm30xj

sm35xg

sm45xsm40x

sm35xsm30x sm27x

2step3step

Blackbody Locus

R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15

R1/71 R2/78 R3/82 R4/74 R5/71 R6/68 R7/82 R8/59 R9/-23 R10/46 R11/71 R12/40 R13/72 R14/90 R15/65Ra/73

R1/98Ra/93 R2/94 R3/87 R4/93 R5/95 R6/90 R7/95 R8/95 R9/84 R10/83 R11/91 R12/66 R13/97 R14/92 R15/97

R1/98Ra/98 R2/99 R3/99 R4/97 R5/97 R6/96 R7/97 R8/97 R9/95 R10/99 R11/98 R12/72 R13/98 R14/99 R15/95

R1/80 R2/86 R3/90 R4/83 R5/81 R6/80 R7/87 R8/69 R9/10 R10/67 R11/82 R12/60 R13/81 R14/95 R15/75Ra/82

Provides a high quality of light focused specifically on red colors. By emphasiz-ing the red and white spectra, and adjusting the proper color coordinate, the M2 series prevents a “yellowing” white appearance, thus making reds more true to their color.

This series provides a high quality of light focused specifically on red colors. Emphasizing more of the red than standard types yields a higher contrast in appearance, thus making the reds truer to their color.

Emphasizes 3 primary colors of the light spectrum, specifically the tip of blue, green and red. This achieves the highest quality of color under general lighting color coordinates (ANSI C78 377 MacAdam 3-step), especially in color applications such as fruits, vegetables, flowers, and produce.

Produces a quality of light specifically intended to enhance whites. Through the use of phosphors only (no UV emission), this series maintains high efficiency and high CRI while reproducing vivid whites without a yellowing effect.

Emphasizing the red and reducing the yellow

Emphasizing 3 colors (Red, Green, Blue) of the light spectrum

Emphasizing the white by adjusting the color and spectrum to produce vivid whites

MeatEmphasizes the red spectrum more than standard types.

Meat (richer red hue)

Produce(e.g. Vegetable)

White Fabrics

Fig. 3: Spectrum and appearance comparisons for meat (top), produce (middle) and white fabric (bottom).Fig. 2 (top): Spectrum for R70, R8000, R9050, and R95 (All 5000K) in order from the left.Fig. 2 (bottom): Color Rendering Index

NICHIA has researched to improve Ra and R9~R15 values (especially R12) in addition to special color rendering options, which is a different approach from color rendering index. Special color rendering focuses on how objects can appear more fresh and vivid. For example: meats appear more appetizing; vegetables, fruits, and flowers appear more natural, and fashion fabrics more vibrant.

Special color rendering options are shown in Fig. 3. NICHIA offers a new way to personalize the appearance of objects with LEDs.

What is Color Rendering Index （CRI）?Additional Options - Special Color Rendering for LEDs

Fig. 1: Color Sample for CRI

CRI is a numerical representation used to evaluate the color rendering properties of a light source. It demon-strates how accurately a sample light source reproduces an object,s color compared to a reference light source.A CRI value of 100 means the sample light source reproduces the same color as the reference light source. Therefore, the higher the CRI value, the more it resembles the reference light source.CIE defines 14 colors / indexes (R1 thru R14) and JIS defines 15 colors / indexes (R1 thru R15) as the test colors to evaluate CRI. Generally CRI is represented as one number, Ra, which is an average of indexes R1 to R8. The other indexes (R9 thru R14/R15), especially R9, are most commonly used to see color quality in general lighting applications.

NICHIA,s white LEDs are made up of a blue die and yellow phosphor.Ra and R9 are strictly controlled by changing phosphor combinations.Spectrum and color rendering index for standard CRI lineups（R70, R8000, R9050, and R95）are shown below. Depending on the application, the suitable Ra rank might change. For example, R70 could be suitable for outdoor fixtures which prefer high luminous efficacy over CRI. R9050 could be suitable for a dining room and restaurant where the hues of the environment are more important than luminous efficacy.

CRI for LED

After

After

Before

Before

After

Before

After Before

5000K 5000K

5000K

3000K