| 摘要 |
PROBLEM TO BE SOLVED: To provide a coupling structure which is capable of surely coupling lenses and brackets or the lenses and a bridge without requiring the degree of skill and the coupling structure of the lenses and the brackets in which the lenses hardly crack or the lenses and the bridge. SOLUTION: This coupling structure of the brackets and the lenses is formed by providing the lens surface contact surface of the bracket 2 with a first hole and a second hole, providing the positions corresponding to the first hole 21 and the second hole 22 of the lenses 1 with a first lens hole 11 and a second lens hole, fixing the first hole 21 and the first lens hole 11 by means of a main screw pin 3 and fixing the second hole 22 and the second lens hole by means of an auxiliary pin 4. As a result, the exertion of undue stresses between the lenses and the brackets or between the lenses and the bridge does not occur and the coupling state thereof is sure. In addition, drilling is possible without requiring the skill and specific procedures.
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