Resources Contact Us Home
Projection type image display apparatus

Image Number 17 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
Mobile terminal and method for displaying information
Semiconductor memory device
Representations of compressed video
Communication system, authentication device, control server, communication method, and program
Method for spore detection
Audiovisual multi-room support
Pixel interleaving configurations for use in high definition electronic sign displays
  Randomly Featured Patents
Method and apparatus for assigning Walsh codes
Process for removing hydrogen sulphide from process gases using solid acceptors, process for cyclic regenerating the used acceptors at high temperature, as well as process for preparing accept
Sensor circuit
Stackable and nestable basket
Finger-stabilized eating plate
Inhaler with flow-through cap
Charge roll, process cartridge, image forming apparatus, charging method, and cleaning method of charge roll
Reduced power magnetoresistive random access memory elements
Method of processing cellular telephone call detail data for billing multi-line customers for cellular telephone services
Electrical connector