Title:
Dual projector cross mirror actuator mechanism
Document Type and Number:
Japanese Patent JP6315891
Kind Code:
B2
Abstract:
A mirror actuator system is provided for aligning images projected onto a curved screen by dual projectors. According to a preferred embodiment, a unique screw mechanism is provided for selectively slightly warping the mirror. The screw mechanism includes a load spreader in contact with the mirror, having a groove (400-2) for receiving a screw actuator (600-1) for applying positive or negative pressure to the load spreader (400-1) and thereby to a local area (i.e. zone) of the mirror. The actuator system provides low cost static pressure adjustment to the mirror for maintaining the focus quality while locally modifying the geometric 'aim' of the mirror. The groove in the load spreader provides tolerance to prevent thermal coefficient of expansion (TCE) distortion.
Inventors:
Schmidt Terence Curl
Application Number:
JP2013088344A
Publication Date:
April 25, 2018
Filing Date:
April 19, 2013
Export Citation:
Assignee:
Christie Digital Systems USA Inc.
International Classes:
G03B21/14
Domestic Patent References:
| JP2001042281A | ||||
| JP2002077777A | ||||
| JP2008287037A | ||||
| JP10307202A | ||||
| JP2004309529A | ||||
| JP2008032782A | ||||
| JP8121436A |
Foreign References:
| US6388810 |
Attorney, Agent or Firm:
Kazuko Fujita