Title:
窓に取り付けられ、かつ遊端を備えた光パイプを有する光学的水滴センサ
Document Type and Number:
Japanese Patent JP3569281
Kind Code:
B2
Abstract:
Mounting of a sensing unit upon the interior surface of a vehicle windshield for detecting the presence of moisture upon the exterior surface and controlling operation of windshield wipers in response thereto is disclosed. The sensing unit comprises a block in which angularly oriented bores are disposed. Light pipes in a first set of the bores communicate with light sources for transmitting light to the outer surface of the windshield, and light pipes in a second set of the bores transmit light reflected from the outer surface to photo-detectors. The lower ends of the light pipes are coplaner with or raised slightly above the surface of the block which is to be secured to the windshield. The block is affixed to the interior surface of the windshield by a double faced adhesive interlayer which both securely adheres the block to the windshield surface and optically couples the light pipes to the windshield.
Inventors:
Purvis, Michael Bee
Tedder, Rain S
Tedder, Rain S
Application Number:
JP50059194A
Publication Date:
September 22, 2004
Filing Date:
May 17, 1993
Export Citation:
Assignee:
LIBBEY-OWENS-FORD COMPANY
International Classes:
B60S1/08; G01F23/292; G01V8/16; G01N21/17; (IPC1-7): G01N21/17; G01V8/16
Domestic Patent References:
| JP60007342A | ||||
| JP61116645A | ||||
| JP50026388Y1 |
Foreign References:
| US4620141 | ||||
| US4935621 | ||||
| EP0461424A1 | ||||
| WO1990005317A1 |
Attorney, Agent or Firm:
Yoichi Oshima