2005/10/31Kuraray Confidential1 About Kuraray WLS Fibers Yuki Shiomi Kuraray Co., Ltd.

2005/10/31Kuraray Confidential2 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

2005/10/31Kuraray Confidential3 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

2005/10/31Kuraray Confidential4 Kuraray Scintillation Materials SCSN SCSF WLS CLEAR Fiber

2005/10/31Kuraray Confidential5 Past Experiments Total 13,000kg 1mm D 1m=1g

2005/10/31Kuraray Confidential6 Round FiberSquare Fiber D Cladding Core Inner Cladding T D Outer Cladding Core To Ti T 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 NA=0.55 Trapping Efficiency=4.2% Structure and Material of the Fiber [Multi cladding][Single cladding]

2005/10/31Kuraray Confidential7 ４５． ７゜ Green Light Blue Light ２６． ７゜ Outer Cladding Core Single/Inner Cladding [Y-11 Multi cladding] Transmission Mechanism of Multi Cladding Fiber ◆ Multi cladding fiber has 50% higher light yield than single cladding fiber

2005/10/31Kuraray Confidential8 900mm 300mm fiber D >=0.6 large spool fiber D <=0.5 small spool about 1600g of fiber/spool Individual Specifications Spool Fiber D >=0.8 Cut length 0.5m to 5m 10,000km of 1.0mm D fibers - 6,250 spools of 1600m +- several 100m Cut

2005/10/31Kuraray Confidential9 Diameter Laser Diameter Apparutus (feed back control) Laser Diameter Apparutus (final measurent) Measurement frequency 50,000 pts Average +- 1% of D Tolerance 3б/D=2.5% Individual Specifications 1.0mm D fiber Average Standard Deviation RMS=<0.007mm

2005/10/31Kuraray Confidential10 Bumps over +-2% of average D Number of 2% bumps =< 50 per km Number of 4% bumps =< 15 per km The number, position, diameter, length will be specified. Making a red mark on all bumps is possible. Individual Specifications

2005/10/31Kuraray Confidential11 Eccentricity (Dmax-Dmin)/(Dmax-Dmin)<1.5% [(Dmax-Dmin)/<3%] Measure 2 points by micrometer Individual Specifications

2005/10/31Kuraray Confidential12 Test Fiber (measures every 10 cm) 3m 2 sample fibers of 3m for every spool sample fiber Attenuation Length and Light Output (Measurement Method)

2005/10/31Kuraray Confidential13 Attenuation Length example:Y D., non-S type with different concentrations Individual Specifications Y-11(200) A.L. of all fibers > 3.5 The A.L. of every sample throughout the whole order RMS/Ave =< 10%

2005/10/31Kuraray Confidential14 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%

2005/10/31Kuraray Confidential15 10m long fiber test apparatus (measure 21 points) All the values of the 21 points of the samples measured >=85% MINOS Measurement Method (A. L. and Light Output)

2005/10/31Kuraray Confidential16 ① Halogen Lump House(non monochromated light) ： ANRITSU ＧＡ－９２２Ａ ② Power Meter ： ANRITSU ＭＬ９１０Ａ ③ Si-PD detector ： ANRITSU ＭＡ９８０２Ａ 2 sample fibers of 3m for every spool Bending Loss (Measurement Method) ② ① FC Connector Sample Fiber (3 m) Black Box ③ 100φdrum 1 turn 100φ

2005/10/31Kuraray Confidential17 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. Individual Specifications

2005/10/31Kuraray Confidential18 Production Capacity Kuraray’s capacity of producing 10,000km of 1mm D fiber Current capacity 74 months Equipment capacity 26 months The best we can do 16 months

2005/10/31Kuraray Confidential19 Yuki Shiomi (sales) Contact Address Osamu Shinji (technical)