PARAPET is the trade name for the acrylic molding materials(PMMA),manufactured by KURARAY Co.,Ltd.
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GRADE INFO
PARAFILTER (Filter Grade)
Near infrared rays passing filter grade
Near infrared rays passing filter grade is a sharply cut filter with specific wavelength selection provided for methacrylic resin. It transmits only near infrared rays for both light emission and reception, completely shutting out the other harmful rays.

Color number Pass limit wavelength (nm) Absorption limit wavelength (nm)   Color number Pass limit wavelength (nm) Absorption limit wavelength (nm)
PF64 662 640 PF72 737 720
PF65 673 650 PF73 750 730
PF66 682 660 PF75 770 750
PF67 691 670 PF78 802 780
PF68 700 680 PF79 827 792
PF69 708 690 PF80 852 805
PF70 718 700    
PF71 727 710    
[Portion of plate thickness of 2mm] [KURARAY in-house data]

Spectrum transmittance

spectrum transmittance

Applications
Remote controls for TVs, audio devices, air conditioners, auto focus cameras, burglar alarms, automatic door sensors, etc.

Ultraviolet rays absorbing filter grade
Color number Rising wavelength (nm) Absorption limit wavelength (nm)   Color number Rising wavelength (nm) Absorption limit wavelength (nm)
PF370 360 370 PF400 395 400
PF380 375 380 1003 400 407
PF390 380 390 PF410 405 410
1001 385 390 PF420 410 420
[Portion of plate thickness of 2mm] [KURARAY in-house data]

Applications
Flash Lens of Digital Camera,Sunglasses Lens,Glasses Lens etc.

Sunglasses Lens,Glasses Lens
Sunglasses Lens,Glasses Lens