| 摘要 |
A method for adhering two pieces of a substance transparent to a short wave length ultraviolet light, such as two plates of quartz glass, which comprises using an alkoxide as a material for adhesion and irradiating a portion to be adhered with an ultraviolt light. The method can be practiced at room temperature with ease and allows the transmission of a light having a short wave length to the limit inherent in the substance used, such as quartz, and thus can be used for producing a quartz glass plate having a large area through adhering plural quartz glass plates in a transverse direction. The quartz glass plate having a large area can be utilized, in a light cleaning device, as a window partitioning a light source section and a cleaning chamber.
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