DELPET™
Light Diffusion Series

Asahi Kasei's DELPET™ Light Diffusion series is a methacrylic resin that achieves both light transmittance and diffusion. It provides smooth light emission without a visible light source, for uses such as vehicle lamps and lighting.

Light Diffusion Series

Enabling expressive lighting

DELPET™'s Light Diffusion series combines high light transmittance and diffusion to realize higher quality product designs that maintain brightness while making the shape of the light source less noticeable.

Light Diffusion Series details

Light Diffusion Series features

Achieving high levels of both transmittance and diffusion

High degree of freedom in molding

Light diffusion is possible without the need for textured molds.

Reduces light source visibility and improves anti-glare performance

High reproducibility of light source color

A wide lineup of products with different transmittance, diffusion rate, and appearance

Image showing an example of light diffusion

The DELPET™ Light Diffusion series combines PMMA with light diffusion fillers, which can reduce the visibility of the light source and improve anti-glare properties.

While ordinary PMMA allows the light source behind it to pass through directly, the DELPET™ Light Diffusion series hides the light source by diffusing the light, and with its high light transmittance, it can achieve bright and beautiful lighting.

Image showing an example of light diffusion

The Light Diffusion series also comes in red, and lighting that was previously achieved by combining milky white and red general PMMA can now be achieved with just one part (red light diffusion).

Example image of red light diffusion

Light Diffusion series applications

Automobile exteriors (lamps, emblems)

Motorcycle lamps

Ceiling light covers

Automobile interiors (switches, console panels, lights)

Lighting decoration

Information board

Light Diffusion series optical property data examples

* The property value is a representative value and not a guaranteed value.

Grade Color No. Formula Degree of diffusion Plate thickness Total light transmittance (%) Haze (%) Chromaticity
(mm) (ISO 13468-1 compliant) (ISO 14782 compliant) (A light source, 2-degree field of view, transmission)
Y x y
80N 33140(AM102) ― 2 9.2 1.1 28.1 0.671 0.329
3 7.7 1.2 25.2 0.678 0.322
80N KM64010 33140 + Light diffusing filler High diffusion type 2 4.9 100 0.3 0.677 0.323
3 3.4 100 0.3 0.685 0.315
80N KM64013 Medium diffusion type 2 9.6 99 1.9 0.67 0.33
3 7.3 99 1.1 0.678 0.323

Light Diffusion series physical properties table

* The property value is a representative value and not a guaranteed value.

Physical property items ISO test method Unit Grade-Color No. Grade-Color No. Grade-Color No.
80N - KML1069 80N - KML1070 80N - KML1094
Lot.TB2323 Lot.TU1Z01 Lot.TU9605
1. Flow characteristics Melt-flow-rate (230°C, 3.8kg load) ISO1133/JISK7210 g/10min 2 1.9 1.9
2. Mechanical Properties Tensile modulus ISO527-2/JISK72621A/1 MPa 3300 3100 3100
Tensile stress ISO527-2/JISK72621A/5 MPa 73 74 77
Tensile failure strain ISO527-2/JISK72621A/5 % 6 7 5
Charpy impact test strength (no notch) ISO179/JISK71111eU kJ/m2 20 19 21
Charpy impact test strength (with notch) ISO179/JISK71111eA kJ/m2 1.3 1.3 1.3
Bending elastic modulus ISO178/JISK71711A/1 MPa 3000 3000 3000
Bending strength ISO178/JISK71711A/1 MPa 117 117 115
Rockwell Hardness ISO2039-2/JISK7202-2 % 6 7 5
3. Thermal Properties Deflection temperature under load（1.8MPa） ISO75-1/JISK7191 °C 99 100 100
Vicat softening temperature ISO306/JISK7206B50 °C 109 109 108
4. Other Properties Total light transmittance (t=3 mm) ISO13468-1/JISK7361-1 % 61 49 75
Haze (t=3mm) ISO14782/JISK7136 % 100 100 99
Water absorption rate (24hr) ISO62/JISK7209 % 0.3 0.3 0.3

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