| 摘要 |
PURPOSE: A photographing device using X-rays is provided to extend the lifetime of the photographing device by preventing damage to lenses due to friction using a friction prevention means. CONSTITUTION: A light collection unit includes a first lens(211) and a first case(21) covering the first lens. An amplification unit includes a second case(22) combined with the first case and a second lens(221) arranged in the second case. The upper side of the second lens faces the lower side of the first lens. A friction prevention means includes a first stopper, an elastic member(210) and a second stopper(212). The second stopper is located on a protrusion(215) located on the inner circumferential surface of the first case.
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