Title:
OPTICAL DETECTION DEVICE
Document Type and Number:
Japanese Patent JP3887783
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a device capable of eliminating restriction on the deign and arrangement of colors, reducing cost, achieving high strength, selecting a detection method freely, and coping with a failure of an element.
SOLUTION: A filter 23C is formed at the peripheral fringe of a transparent plate 23 of this optical detection device by enlarging it to a light emitting element 6 and a light receiving element 7 side integrally. The filter 23C prevents the intrusion of unnecessary light from the outside into each element 6, 7, and its upper side face is bonded to a protection cover 21 over a wide area. A colored part of color matching the appearance of the device is provided on the inner side of the filter 23C. A pair of elements in one direction and the other direction are selectively driven by a selection means to suppress the frequency of use of each element. The element adjacent to the element causing a failure is operated instead of the element causing a failure by an adjacent element operating means to increase a resistance force against a failure in a part and improve reliability.
Inventors:
Yuichi Ise
Iori Matsumoto
Iori Matsumoto
Application Number:
JP2005309136A
Publication Date:
February 28, 2007
Filing Date:
October 24, 2005
Export Citation:
Assignee:
DOWA Holdings Co., Ltd.
International Classes:
G06F3/042; G01B11/00; G01D5/32; G06F3/041; H01L31/12
Domestic Patent References:
| JP2183323A | ||||
| JP61221923A | ||||
| JP64065624A | ||||
| JP62298821A |
Attorney, Agent or Firm:
Aniya Setsuo
Toru Yui
Hitoshi Kiyono
Toru Yui
Hitoshi Kiyono