Abstract

The light-focusing plastic rod (LFR) and fiber (LFF) were fabricated by photocopolymerization of methyl methacrylate (MMA) with vinyl phenylacetate (VPAc). The MMA–VPAc LFR has much higher clarity than that of the MMA–vinyl benzoate LFR reported previously. Using the benzoin methyl ether as the initiator, which initiates photopolymerization preferentially, led to a much steeper index distribution than using benzoyl peroxide, which initiates thermal- and photochemical polymerization simultaneously. The relationships between preparation condition and optical characteristics were clarified in terms of the index distribution, light scattering, lens function, and attenuation of light transmission.

© 1982 Optical Society of America

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