| 摘要 |
PURPOSE: A structure for attaching a prism of a LCD projector is provided to prevent a screen cloud and a matching deviant phenomenon by attaching a prism of a composition system, a prism top unit and a prism bottom unit as a complete hardening state by an adhesive bond. CONSTITUTION: A UV irradiating unit(2) is inserted at a prism top unit(1) and a prism bottom unit(6) for hardening an adhesive bond. In addition, a plurality of inserting holes(3) is formed for irradiating the ultraviolet rays in a vertical state. An adhesive bond is applied at the inner circumference surface of the inserting holes(3) formed larger than the outer end circumference surface of the UV irradiating unit(2) using an injector. A prism(5) and the prism top unit(1) are attached thereto by irradiating the ultraviolet rays about 300 seconds on condition that the end surface of the UV irradiating unit(2) is closely contacted on the upper end surface of the prism(5) after a prism is put on the prism top unit(1). The prism bottom unit(6) is attached to the prism(5) as the same method. The end surface of the UV irradiating unit(2) is closely attached at the upper end surface of the prism(5) by inserting the UV irradiating unit(2) into the inserting holes(3) formed at the prism top unit(1). Thus, the prism bottom unit(6) is attached to the prism(5) as a complete hardening state by irradiating the ultraviolet rays about 300 seconds.
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