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Edmund Optics® TECHSPEC® Plastic Aspheric Lenses and TECHSPEC® Plastic Hybrid Aspheric Lenses are both manufactured utilizing Zeon Chemical’s Zeonex E48R material. Zeonex materials feature high transparency, low fluorescence, low birefringence, low water absorption, and high heat and chemical resistance, making it a superior material vs. other commonly available plastics. Zeonex is a Cylco Olefin Polymer (COP) material.
| Plastic Materials Selection Guide | |||||
|---|---|---|---|---|---|
| Property | Glass | Zeonex E48R | PMMA | Polycarbonate | Polystyrene |
| Transmission | Excellent | Excellent | Excellent | Good | Very Good |
| Low Refractive Index | Excellent | Excellent | Excellent | Poor | Poor |
| Birefringence | Excellent | Excellent | Excellent | Poor | Poor |
| Water Absorption | Excellent | Excellent | Poor | Good | Excellent |
| Impact Resistance | Poor | Good | Good | Excellent | Good |
| Moldability | Fair | Excellent | Good | Excellent | Excellent |
| Heat Resistance | Excellent | Good | Poor | Good | Poor |
| Coating Adhesion | Excellent | Good | Fair | Fair | Fair |
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