作者: Masato Ito
DOI:
关键词: Lens (geology) 、 Optics 、 Geology
摘要: A lens barrier unit capable of improving the external force-resistance without increasing size itself. The opens/closes an opening portion a cover member. Each first panel member and second has communicating with plate-shaped for partially defining opening. moves between protection position exposed position. link to or are arranged located on side side, overlap each other through static pressure receiving structure.