Resources Contact Us Home
Projection type image display apparatus

Image Number 18 for United States Patent #7850309.

Elements of an optical system (12) of a projection type image display apparatus are stored in an optical system storage (46) having an upper opening in such a way that the optical element to be arranged close to a light source is fitted in the frame provided in the high-temperature region of the optical system storage (46) close to the light source, while the rest of the optical elements are respectively fitted in the frames in the low-temperature region of the optical system storage (46) remote from the light source. The upper opening in the high-temperature region is covered, in the low-temperature region, with a resilient metal lid (471), and, in the low-temperature region, covered with a resilient resin lid (472). Portions of these lids are partially cut into spring-like narrow strips having tips configured to firmly and accurately hold the lenses fitted in the respective frames, whereby the dimensional tolerances of the optical elements and the frames can be absorbed solely by the lids without resorting to any other parts.

  Recently Added Patents
Electric connection box
Instrumenting configuration and system settings
Modified polyolefin resin for glass fiber treatment, surface-treated glass fiber, and fiber-reinforced polyolefin resin
Lettuce sister lines PX06514083, PX06514153, PX06514201 and PX06514204
Information processing apparatus capable of authentication processing with improved user convenience, control program for information processing apparatus, and recording medium having control
Sequential control device for a striking mechanism
  Randomly Featured Patents
Detection of leaks in vessels
Electronic component and method of production thereof
Touch screen measurement circuit and method
Method for desulfurization of flue gases
Voicemail notification server load balancing
Methods for locating formation fractures and monitoring well completion using streaming potential transients information
Resilient railway car truck suspension
Rotary shaft brake
Method and apparatus for making air products
Process for producing a fluorine atom-containing sulfonyl fluoride compound