Method for manufacturing optical element, method for...

Optics: measuring and testing – By polarized light examination

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C356S319000, C356S322000, C349S005000, C349S008000, C359S483010, C359S486010

Reexamination Certificate

active

07551280

ABSTRACT:
A method for manufacturing an optical element in which a display quality of a projection image is improved is provided. The method is for manufacturing an optical element having a polarization plate of which one side a transmissive member is bonded. The method includes preparing a light source, a polarization plate, a transmissive member, a certificating polarization plate and a spectrophotometer; arranging the polarization plate, the transmissive member, and the certificating polarization plate between the light source and the spectrophotometer; measuring a light transmittance spectrum of a predetermined wavelength at each rotational position of the transmissive member; determining the rotational position of the transmissive member that yields a smallest value for a difference between a maximum value and a minim value of the light transmittance spectrum; and bonding the transmissive member to the polarization plate at the determined rotational position.

REFERENCES:
patent: 6885465 (2005-04-01), Kitabayashi et al.
patent: A 7-020317 (1995-01-01), None
patent: A 2000-112022 (2000-04-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for manufacturing optical element, method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for manufacturing optical element, method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing optical element, method for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4127346

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.