| 摘要 |
PROBLEM TO BE SOLVED: To stably manufacture a high intensity rod lens array excellent in arrangement and optical characteristics by improving the arrangement of rod-like lens elements and the optical characteristics. SOLUTION: The rod lens array has such a structure that lots of rod-like lens elements 14 are arrayed between two sideboards 10, and are unified in one body by filling those gaps with a resin 16 and curing it, and the resin filled in the gaps is an addition reaction type silicone resin containing mono-dispersion processed true spherical organic filler of 0.1 to 25μm of mean particle diameters by 0.1 to 20 mass%. It is desirable that resin components are added to the silicone resin. Also, viscosity of 500 to 1500 mPa-s is favorable. Further, it is desirable to add 0.01 to 0.5 mass% curing retarder for suppressing change in viscosity under filling. COPYRIGHT: (C)2007,JPO&INPIT
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