Patent US5810463A successfully refreshed from Google Patents.
US5810463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illumination device
Assignee: Nikon Corp
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Filing: 1995-11-28
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Granted: 1998-09-22
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Expires: 2015-11-28
Abstract
Abstract An illumination device for an image input device includes a cylindrical light guiding unit, a board having a plurality of light emitting diode elements, a connection member connecting the light guiding unit with the board and a terminal reflection member formed at one end of the light guiding unit. A surface of the light guiding unit has a scattering reflection member extending linearly along the axial direction of the light guiding unit. A cylindrical reflection member is spaced around the light guiding unit and a linear space is provided in the reflection member along the axial direction of the guiding unit.
Inventors
- 👤 Atsushi Kawahara
- 👤 Osamu Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:59
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0005; G02B6/0006; F; F21; F21K; F21K9/00; F21K9/60; F21K9/61; F21Y; F21Y2115/00; F21Y2115/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
80 words
A lighting device comprising: a main light guiding unit formed by a rod-shaped transparent member defining an axial direction; a sub-light guiding unit connected to an outer perimeter of the main light guiding unit and extending tangentially from the main light guiding unit; a linear-shaped light scattering unit provided along the axial direction of main light guiding unit; and a light source linearly parallel to the axial direction of the main light guiding unit and facing the sub-light guiding unit.
Claim 2
Dependent Claim
80 words
A lighting device comprising: a main light guiding unit formed by a rod-shaped transparent member defining an axial direction; a sub-light guiding unit connected to an outer perimeter of the main light guiding unit and extending tangentially from the main light guiding unit; a linear-shaped light scattering unit provided along the axial direction of main light guiding unit; and a light source linearly parallel to the axial direction of the main light guiding unit and facing the sub-light guiding unit.
Claim 3
Dependent Claim
42 words
The lighting device of claim 1, wherein the sub-light guiding unit is placed with such an angle that the light rays are guided from the light source through the sub-light guiding unit to an inner surface of the main light guiding unit.
Claim 4
Dependent Claim
17 words
The lighting device of claim 1, wherein the light source includes a plurality of light emitting elements.
Claim 5
Dependent Claim
38 words
The lighting device of claim 1, further comprising a mirror device provided along the axial direction of the main light guiding unit and having an axial slit allowing light to pass out of the main light guiding unit.
Claim 6
Dependent Claim
21 words
The lighting device of claim 1, further comprising another light source facing one axial end of the main light guiding unit.
Claim 7
Dependent Claim
18 words
The lighting device of claim 5, wherein the another light source includes a plurality of light emitting elements.
Claim 8
Dependent Claim
23 words
The light device of claim 5, wherein the light source and the another light source include red, green and blue light emitting elements.
Claim 9
Dependent Claim
20 words
The light device of claim 1, further comprising a lens array and a linear sensor to read an original image.
Claim 10
Dependent Claim
14 words
The lighting device of claim 1, wherein the sub-light guiding unit is substantially flat.
Claim 11
Dependent Claim
116 words
An illumination device comprising: a cylindrical light guiding unit; a light source having a plurality of light emitting devices; a connecting device provided between the light guiding unit and the light source for guiding light to the light guiding unit; a light scattering reflection member extending linearly along an axial direction of the cylindrical light guiding unit; and a space extending linearly along the axial direction of the light guiding unit to allow light to pass, wherein the connecting device comprises a guiding unit connected to an outer perimeter of the cylindrical light guiding unit and extending from the cylindrical light guiding unit in a direction perpendicular to an axial direction of the light guiding unit.
Claim 12
Dependent Claim
116 words
An illumination device comprising: a cylindrical light guiding unit; a light source having a plurality of light emitting devices; a connecting device provided between the light guiding unit and the light source for guiding light to the light guiding unit; a light scattering reflection member extending linearly along an axial direction of the cylindrical light guiding unit; and a space extending linearly along the axial direction of the light guiding unit to allow light to pass, wherein the connecting device comprises a guiding unit connected to an outer perimeter of the cylindrical light guiding unit and extending from the cylindrical light guiding unit in a direction perpendicular to an axial direction of the light guiding unit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-21 | 2002-03-23 | 2002-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-21 | 2006-03-23 | 2006-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-21 | 2010-03-23 | 2010-09-22 | $7700.00 | Window Closed / Lapsed |