A light guiding device can be used for a reader/writer device ( 1 ) for a noncontact communication medium. The light guiding device includes a light guide plate ( 10 ) which includes: a transparent main body part ( 17 ) which can transmit light inputted from an LED ( 9 ); and a protruding part ( 18 ) which is provided so as to protrude from a part of an end surface of the transparent main body part ( 17 ). A diffusely reflecting part ( 19 ) is provided on a lower surface side of the transparent main body part ( 17 ), and a first light emitting part ( 7 ) is provided on an upper surface side of the transparent main body part ( 17 ). Reflecting parts ( 21 ) are provided on an upper surface side and a lower surface side of the protruding part ( 18 ), and a second light emitting part ( 8 ) is provided at a leading end of the protruding part ( 18 ). In the case where the first light emitting part ( 7 ) is covered by the noncontact communication medium, the second light emitting part ( 8 ) makes it possible to check a light emitting state. Accordingly, the light guiding device is provided, in which the light emitting state of the light emitting part can be easily checked.

Claims

8 · 1 independent · depth 3

8 granted claims

›1.independentA light guiding device, comprising a light guide plate, the light guide plate including:na transparent main body part which can transmit light inputte…+7

›2.↳ 1The light guiding device according to claim 1, whereinnthe light guide plate includes a plurality of the protruding parts which protrude in directions…d2

›3.↳ 1The light guiding device according to claim 1, whereinnthe light guide plate includes a light entrance part through which the light is inputted from t…d2+1

›5.↳ 1A reader/writer device for a noncontact communication medium, comprising:nthe light guiding device according to claim 1;a reader/writer part which per…d2+2

›7.↳ 1An electronic apparatus, comprising the light guiding device according to claim 1.d2

Classifications

4 codes

IPC · International Patent Classification

Section G — Physics

G06K5/00

USPC · US Patent Classification

235/380235/375235/379

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Pendency

3.6 y

1,329 days filing → grant

Office actions

none on record

Responses

1 RCE

Examiner

Thien M. Le

art unit 2887 · TC 2800

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Citations: 9 back · 0 forward

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Priority chain

1 priority documents

›Priority documents — 1

Type	Document	Date
related publication	US 20110011935 A1	20 Jan 2011

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