Title:
BLADE DRIVE DEVICE AND OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/044294
Kind Code:
A1
Abstract:
A blade drive device (1) is provided with a base plate (50) having a light path opening (51), and also with blades (10, 20) cooperating with each other to set to a predetermined level the amount of light passing through the light path opening (51). The blade (10) has an opening (15), and the blade (20) has a cutout section (21) cooperating with the opening (15) to set the amount of light, and also has a cutout section (23) cooperating with the opening (15) to set the amount of light. The cutout section (23) is overlapped on the blade (10) when the cutout section (21) and the opening (15) together set the amount of light.
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Inventors:
JAITHAM WORACHAI (TH)
CHAROENSILPUTTHAKUN PRAPAS (TH)
CHAROENSILPUTTHAKUN PRAPAS (TH)
Application Number:
PCT/JP2009/062625
Publication Date:
April 22, 2010
Filing Date:
July 10, 2009
Export Citation:
Assignee:
SEIKO PRECISION KK (JP)
JAITHAM WORACHAI (TH)
CHAROENSILPUTTHAKUN PRAPAS (TH)
JAITHAM WORACHAI (TH)
CHAROENSILPUTTHAKUN PRAPAS (TH)
International Classes:
G03B9/02; G03B9/06
Foreign References:
JPH07234437A | 1995-09-05 | |||
JPH1090748A | 1998-04-10 | |||
JP2002055375A | 2002-02-20 | |||
JP2007233054A | 2007-09-13 |
Attorney, Agent or Firm:
KATAYAMA, SHUHEI (JP)
Shuhei Katayama (JP)
Shuhei Katayama (JP)
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