Industry Patents
Patent: 7182470
Light Amount Control Apparatus and Projector Apparatus Using the Same
(Click image for PDF of full patent)
| Patent Number: |
7182470 |
| Title: |
Light Amount Control Apparatus and Projector Apparatus Using the Same |
| Abstract: |
A light amount control apparatus includes a pair of light amount control
plates arranged at side edge portions of a light path, a driving device
having a drive rotating shaft, and a transmitting member for transmitting
rotation of the drive rotating shaft to the light amount control plates.
The light amount control plates are supported by the rotating support
shafts at two side edges of the light path to pivot in an advancing
direction of the light path. The drive rotating shaft is arranged
substantially parallel to the rotating support shafts. A transmitting
member includes a first gear assembly connected to the drive rotating
shaft, and a second gear assembly rotated in a direction reverse thereto.
One light amount control plate is fixedly supported by the first gear
assembly, and the other light amount control plate is fixedly supported
by the second gear assembly.
|
| Country of Issue: |
US |
| First Named Inventor: |
Hashimoto, Hayakawa |
| Assignee: |
Nisca Corporation |
| Continuation or Divisional of: |
|
| International Classification: |
G03B 21/14 |
| US Classification: |
353/97 |
| Issue Date: |
02-27-2007 |
| Filing Date: |
03-18-2005 |
| Application : |
11/082818 |
| Notes: |
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| Link to Patent at freepatentsonline.com: |
7182470 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7182470 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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