专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明授权

US5345282A Foldable optical apparatus 失效
标题翻译：可折叠光学装置
公开(公告)号：US5345282A
公开(公告)日：1994-09-06
申请号：US45232
申请日：1993-03-23
申请人： Seimei Ushiro , Bunsuke Emura
发明人： Seimei Ushiro , Bunsuke Emura
IPC分类号： G03B21/132 , G03B21/30 , G03B21/14
CPC分类号： G03B21/30 , G03B21/132
摘要： An optical apparatus, e.g. a foldable overhead projector of the reflection type, includes a base table, whereon original material is placed on a Fresnel mirror. A projector head forms an image of the original material. A stand is swung on the base table. The stand, when folded, overlies a control portion of the Fresnel mirror. The projector head is vertically swingable on a distal end of the stand. A stand locking lid is swingably mounted on the stand distal end. Retaining claws are formed at a front of the locking lid. Receiving recesses in the base table retain the retaining claws, and keep the stand folded. The locking lid has a manually pullable edge, which is pulled to disengage the retaining claws from the receiving recesses. The projector is thus erected and folded easily, because it is openable quickly for erection. A pair of plates are swingable beside the base table between open and closed positions, to cover lateral margins of the Fresnel mirror when closed, and lie flush with the Fresnel mirror when opened. A storage chamber in the base table contains a plurality of original materials, and is covered by the vertically swingable Fresnel mirror. Two rollers under the base table and close to a front edge facilitate transportation of the base table as raised in a position opposite to the rollers.
摘要翻译：光学装置，例如反射型折叠式高架投影仪包括一个底座，原始物品放置在菲涅耳镜上。投影仪头部形成原始图像。一张桌子摆在桌子上。折叠时，支架位于菲涅耳镜的控制部分。投影头在支架的远端可垂直摆动。支架锁定盖可摆动地安装在支架远端。保持爪形成在锁定盖的前部。底座中的接收凹槽保持保持爪，并保持支架折叠。锁定盖具有可手动拉动的边缘，其被拉动以将保持爪从接收凹部脱离。因此，投影机可以很容易地竖立和折叠，因为它可以快速打开以进行勃起。一对板可以在打开和关闭位置之间的基台旁摆动，以便在关闭时覆盖菲涅耳镜的侧边缘，并在打开时与菲涅耳镜面齐平。基座中的存储室包含多个原始材料，并被垂直摆动的菲涅耳镜覆盖。底座下方两个靠近前缘的滚轮有助于基座台在与滚轮相对的位置上升高。

IPRDB

热门服务

关于我们

友情链接

联系方式