1. CCT Tunable White COB Series
Introduction
CCT Tunable White COB Series
Feb. 12, 2019

2. Our registered brands include Tyanshine & GoldiLED.
About us
Guangzhou Tianxin Photoelectric was founded in August Main business includes research, development, manufacturing and marketing LED component and module. Our products are focus on market segments of automotive after-market, architectural, horticultural, stage, studio and general lighting.
In 2017, our factory moved into new industrial zone located in Huadu District Guangzhou China with 31,000m2 factory area and GoldiLED brand was created with a mission of servicing worldwide customers.
Our registered brands include Tyanshine & GoldiLED.
Factory in Guangzhou

3. Our product architecture is created from
1. LED chips from renown international brands
2. State of the art LED packaging technology
3. Expertise in thermal management
4. International premium product quality
5. Automatic production lines
Example CCOB series:
1. LED chip San An
2. New Flip Chip bonding machine
3. Ceramic PCB Substrate
4. ISO 9001 & LM80
5. (1st) Launch in 2015 (Patent Pending)
Example 5266 series:
1. LED chip Osram Opto
2. New Eutectic bonding machine
3. Highly conductive Copper Substrate
4. ISO 9001
5. (1st) Launch in May 2017

4. Our invention patents are granted for different product series, including the 5266, 6066 & CCOB series (PCT patent pending status).
Gold award of product design certificate
in (Huadu Government)
Many new invention certificates since 2012
Tuanble White COB series
Invention Patent China
PCT Patent Pending
Gold Award of Product Design
Invention Patent China
RGBW 250W - 400W series
Invention Patent China

5. Product Specification
Latest Product Specification
CCT Tunable White Series
Product Specification
1308
(New)
1309
1512
1824
1936
2548 8W 9W
12W
24W
20W / 36W
30W / 48W
24V
36V
CCT range
CRI available
Remarks
1800K to 3000K
80, 90
2200K to 6500K
2500K to 6000K
2800K to 4200K 95
High color saturation
2700K to 5700K
80, 90, 95

6. Latest LED performance Feb. 2019 (Tj = 25 C)
1936SW (20W)
2700K
5700K
Ra 80
Ra 90 mA
2400 lm
2950 lm
1820 lm
2440 lm
34.5 V
120 lm/W
147 lm/W
91 lm/W
122 lm/W
2548SW (30W)
2700K
5700K
Ra 80
Ra 90 mA
3450 lm
4250 lm
2700 lm
3600 lm
34.5 V
115 lm/W
141 lm/W
90 lm/W
120 lm/W

7. Cross Compound COB types
Many other tunable white COB technologies put LED chips with different CCTs into two segments. As a result, the light output will have multi-shadow and bad color uniformity out of the luminaire.
Round, Linear, Dot types
Single layer of phosphor on LED chip
Our method is to pre-mix the two types of LED light output through volume coating of phosphor (same as normal COB technology) to get rid of multi-shadow and provide excellent color uniformity.
Cross Compound COB types
Two layers of phosphor on LED chip

8. Benefits of GoldiLED Tunable White COB
Why color uniformity is so important for CCT Tunable COB?
COB is used mainly for spot & track lighting and application includes shop and hotel lighting.
Light quality from lighting fixture is expected to be similar to traditional halogen light bulb which has good color uniformity and does not have multi-shadow with a reasonable reflector at a lighting fixture.
In addition, CCT Tunable COB product emission area must be similar to single white COB product in order to use the existing optical system in the market to provide narrow beam angle, such as 24° & 36°.
For example, with a commonly used reflector in the market, our tunable White COB illuminates light as below :
6000K
+/- 300K
No multiple line
Good uniformity

9. Benefits of GoldiLED Tunable White COB
Spot light with lens or reflector for retail lighting
Through optics, our COB can create narrow beam angle, such as below 24° without multi-shadow from lighting fixture.
Model: 1527SW
27W 36V
2700K – 5700K
Beam angle 24°

10. Benefits of GoldiLED Tunable White COB
Directional downlight for hotel & residential lighting
Our COB does not create multi-shadow on the wall and provides good colour uniformity.
Model: 1512SW
12W 36V
2500K – 6000K
Beam angle 24°
Good Colour Uniformity

11. Benefits of GoldiLED Tunable White COB
Example: Spot light with zoom lens for shop & museum lighting application
GoldiLED tunable white COB provides good colour & light uniformity which does not have multi-shadow even when zoom lens is applied on the lighting fixture.
Model: 1527SW
27W 36V
2700K – 5700K
Beam angle 10° - 60°

12. Benefits of GoldiLED Tunable White COB
A Successful Case of GoldiLED Tunable White COB in shop lighting (Hong Kong Bossini):
Lighting effect: good color uniformity, no multi-shadow, strong candela brightness
Fixture: No diffuser, common 36º reflector type 36W track light
COB model: 1936SW (Ra 90)

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