Industry Patents
Patent: 7192162
Spotlight
(Click image for PDF of full patent)
| Patent Number: |
7192162 |
| Title: |
Spotlight |
| Abstract: |
A novel spotlight where the position of image formation does not change
even when the zoom adjustment is made after focus adjustment, so that
focus adjustment and zoom adjustment can be facilitated. When a drive
shaft (10) is rotated by operating a zoom adjustment handle (5), a lens
(4a) moves forward and backward according to an unequal pitch (P1) of a
first screw section (15), and a lens (4b) moves forward and backward
according to an equal pitch (P2) of a second screw section (16), so that
the distances between the lenses (4a 4c) are changed and zoom adjustment
is made. Focusing adjusted by a focus adjustment mechanism (b) does not
change even when the distances between the lenses are changed. Therefore,
focus adjustment and zoom adjustment can be made extremely simply, and
the spotlight can be used particularly useful in performance space such
as TV studios and theater stages.
|
| Country of Issue: |
US |
| First Named Inventor: |
Tanaka, Ishizone |
| Assignee: |
Marumo Electric |
| Continuation or Divisional of: |
|
| International Classification: |
F21V 29/00 |
| US Classification: |
362/268 |
| Issue Date: |
03-20-2007 |
| Filing Date: |
09-08-2003 |
| Application : |
10/524058 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7192162 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7192162 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.
Disclaimer: This web site is not intended to offer comprehensive or sufficient
information to enable a full legal analysis of a patent or potential
infringement. The information provided on this web site is intended
as general information only, and is not intended to serve as legal
opinion, legal advice or as a substitute for legal counsel. If you
have a question about a specific factual situation, you should
contact an attorney directly
|
