公开(公告)号：US3594964A

公开(公告)日：1971-07-27

申请号：US3594964D

申请日：1969-06-17

申请人： OBSERVA DOME LAB INC

发明人： CLARK WILLIAM T

IPC分类号： E04B1/32 ,  E04H3/00 ,  E04D13/03 ,  G09B27/00

CPC分类号： E04H3/00 ,  E04B1/3211 ,  E04B2001/3276 ,  E04B2001/3288

摘要： A self-supporting planetarium projection dome constructed of a plurality of segments connected together to form a hemispherical dome. The segments include oppositely disposed marginal flanges which are connected together to form circumferentially extending joints. Arcuate cover strips in the form of T-shaped members are clamped between the marginal flanges of the joints to cover the joints and present a continuous interior dome surface for realistically reflecting projected celestial images.