1. About Kuraray WLS Fibers
Yuki Shiomi
Kuraray Co., Ltd.
2005/10/31
Kuraray Confidential

2. Agenda Kuraray Methacrylate Company Kuraray Scintillation Material
Past experiments
Structure and Material of the Fiber
Individual Specifications
spool/cut/diameter/bumps/eccentricity/
attenuation length/light output/bending loss
Production Capacity
Question and Answers
2005/10/31
Kuraray Confidential

3. Methacrylate Company Core Products Methacrylic resin for molding
light -guide plates for liquid crystal displays (LCDs)
automobile lamp covers, and lighting fixtures
Methacrylic synthetic marble
Methacrylic resin sheets
signboards, displays, large tanks for aquarium facilities
front panels for televisions and computer monitors
Opto-screens
screens for rear-projection televisions
(Fresnel lens and lenticular lens)
Stampers
CD-R, DVD±Ｒ stampers
Stampers for light -guide of LCDs
Scintillation Materials
2005/10/31
Kuraray Confidential

4. Kuraray Scintillation Materials
SCSN
SCSF
WLS
CLEAR Fiber
2005/10/31
Kuraray Confidential

5. Past Experiments Total 13,000kg 1mm D 1m=1g 2005/10/31
Kuraray Confidential

6. Structure and Material of the Fiber
Round Fiber
Square Fiber
[Single cladding]
[Multi cladding]
[Single cladding] D
Cladding
Core
Inner Cladding T
Outer Cladding To Ti SQ
Core
Cladding T
T=3% of D
NA=0.55
Trapping Efficiency=4.2%
T=3%(To)+3%(Ti) of =6% of D
NA=0.72
Trapping Efficiency=5.4%
T=3% of SQ
2005/10/31
Kuraray Confidential

7. Transmission Mechanism of Multi Cladding Fiber
[Y-11 Multi cladding]
Outer Cladding
Single/Inner Cladding
Blue Light
Core
２６．７゜
４５．７゜
Green Light
◆Multi cladding fiber has 50% higher light yield than single cladding fiber
2005/10/31
Kuraray Confidential

8. Individual Specifications
Spool
900mm
fiber D >= large spool
fiber D <= small spool
about 1600g of fiber/spool
300mm
10,000km of 1.0mm D fibers
- 6,250 spools of 1600m +- several 100m
Cut
Fiber D >=0.8
Cut length　　0.5m to 5m
2005/10/31
Kuraray Confidential

9. Individual Specifications
Diameter
Laser Diameter Apparutus
(final measurent)
Laser Diameter Apparutus
(feed back control)
Measurement frequency ,000 pts
Average % of D
Tolerance б/D=2.5%
1.0mm D fiber
Average
Standard Deviation RMS=<0.007mm
2005/10/31
Kuraray Confidential

10. Individual Specifications
Bumps
over +-2% of average D
The number, position, diameter, length will be specified.
Making a red mark on all bumps is possible.
Number of 2% bumps =< 50 per km
Number of 4% bumps =< 15 per km
2005/10/31
Kuraray Confidential

11. Individual Specifications
Eccentricity
Measure 2 points by micrometer
(Dmax-Dmin)/(Dmax-Dmin)<1.5%
[(Dmax-Dmin)/<3%]
2005/10/31
Kuraray Confidential

12. Attenuation Length and Light Output (Measurement Method)
2 sample fibers of 3m for every spool
Test Fiber
(measures every 10 cm) 3m
sample fiber
2005/10/31
Kuraray Confidential

13. Individual Specifications
Attenuation Length
Y-11(200) A.L. of all fibers > 3.5
The A.L. of every sample throughout the whole order
RMS/Ave =< 10%
example:Y D., non-S type with different concentrations
2005/10/31
Kuraray Confidential

14. Individual Specifications
Light Output
The L.O. at the 140cm of every sample throughout the whole order
RMS/Ave=<7%
The L.O. at the 285cm of every sample throughout the whole order
RMS/Ave=<15%
2005/10/31
Kuraray Confidential

15. MINOS Measurement Method (A. L. and Light Output)
10m long fiber test apparatus (measure 21 points)
All the values of the 21 points of the samples measured >=85%
2005/10/31
Kuraray Confidential

16. Bending Loss (Measurement Method)
2 sample fibers of 3m for every spool ② ①
FC Connector
Sample Fiber
(3 m)
Black Box ③
100φdrum
1 turn
100φ
①Halogen Lump House(non monochromated light)：ANRITSUＧＡ－９２２Ａ
②Power Meter：ANRITSU ＭＬ９１０Ａ
③Si-PD detector：ANRITSU ＭＡ９８０２Ａ
2005/10/31
Kuraray Confidential

17. Individual Specifications
Bending Loss
Bending Loss of all the samples=<5%
The Minimum bending diameter we recommend on safety side and long term reliability
*S type – stronger against cracking, but has 10% shorter A.L.
2005/10/31
Kuraray Confidential

18. Production Capacity
Kuraray’s capacity of producing 10,000km of 1mm D fiber
Current capacity months
Equipment capacity months
The best we can do months
2005/10/31
Kuraray Confidential

19. Contact Address Yuki Shiomi (sales) Yuuki_Shiomi@kuraray.co.jp
Osamu Shinji (technical)
2005/10/31
Kuraray Confidential