发明名称 OPTICAL ELEMENT HOLDING APPARATUS, BARREL, EXPOSURE APPARATUS, AND MANUFACTURING METHOD FOR DEVICE
摘要 An optical element holding apparatus includes an annular vibration attenuation plate, which covers a peripheral portion of a lens, and a connection member, which is formed of a damping alloy and which fixes the vibration attenuation plate to a frame body in a state of non-contact with the surface of the lens. The vibration attenuation plate and nitrogen gas in a clearance between the vibration attenuation plate and the surface of the lens form a squeeze film damper.
申请公布号 US2011235014(A1) 申请公布日期 2011.09.29
申请号 US201113159305 申请日期 2011.06.13
申请人 ARAI YOUICHI 发明人 ARAI YOUICHI
分类号 G03B27/54;G02B7/02;G03B27/32 主分类号 G03B27/54
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