US4866258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical pattern detecting apparatus
Assignee: Panasonic Holdings Corp
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Filing: 1988-07-08
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Granted: 1989-09-12
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Expires: 2008-07-08
Abstract
Abstract An optical pattern detecting apparatus has a ball lens (2), a light emitting device such as LED (3) and a light receptor such as photodiode (4), the latter two (3, 4) being disposed side-by-side with their optical axis substantially in parallel so that light from the light emitting device (3) passes is converged by the ball lens (2) onto barcode mark (7) and light reflected from said barcode mark (7) is guided by the same ball lens (2) to the light receptor (4); and by use of the ball lens, the apparatus can stably detect the barcode mark even at inclination of the apparatus to the surface of the barcode mark.
Inventors
- 👤 Shuji Ueda
- 👤 Chiuji Shibuya
- 👤 Takashi Kanehisa
- 👤 Kenji Fujishiro
- 👤 Shoro Mochida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:22
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10881
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
An optical pattern detecting apparatus comprising a light emitting device, a photoreceptor, a common lens which condenses light irradiated from said light emitting device onto a surface having a pattern and further guides light reflected from said surface to said photoreceptor, and a common light stop installed between said light emitting device and said lens, as well as, between said photoreceptor and said lens.
Claim 2
Dependent Claim
64 words
An optical pattern detecting apparatus comprising a light emitting device, a photoreceptor, a common lens which condenses light irradiated from said light emitting device onto a surface having a pattern and further guides light reflected from said surface to said photoreceptor, and a common light stop installed between said light emitting device and said lens, as well as, between said photoreceptor and said lens.
Claim 3
Dependent Claim
34 words
An optical pattern detecting apparatus in accordance with claim 1, characterized in that the light emitting device and the photoreceptor are arranged substantially in parallel direction to the optical axis of the common lens.
Claim 4
Dependent Claim
18 words
An optical pattern detecting apparatus in accordance with claim 1, wherein the common lens is a ball lens.
Claim 5
Dependent Claim
31 words
An optical pattern detecting apparatus in accordance with claim 1, wherein a substantially cylindrical reflection surface is provided around a light path between the light emitting device and the light stop.
Claim 6
Dependent Claim
78 words
An optical pattern detecting apparatus comprising: a light unit comprising a light emitting device as a light source and a photoreceptor disposed with their optical axis substantially in parallel, a lens for condensing light irradiated from said light emitting device onto a barcode surface and also for guiding the light reflected from the barcode surface to said photoreceptor, and a light stop disposed between said light emitting devices and said lens and between said lens and said photoreceptor.
Claim 7
Dependent Claim
78 words
An optical pattern detecting apparatus comprising: a light unit comprising a light emitting device as a light source and a photoreceptor disposed with their optical axis substantially in parallel, a lens for condensing light irradiated from said light emitting device onto a barcode surface and also for guiding the light reflected from the barcode surface to said photoreceptor, and a light stop disposed between said light emitting devices and said lens and between said lens and said photoreceptor.
Claim 8
Dependent Claim
45 words
An optical pattern detecting apparatus in accordance with claim 1 or 5, wherein said light stop is installed at a point of cross-over of the optical axis of the irradiation path of emitted light and the optical axis of the reception path of reflected light.
Claim 9
Dependent Claim
42 words
An optical pattern detecting apparatus in accordance with claim 1 or 5, wherein said light stop is installed at a position on a line connecting a center of said lens and a center between said light emitting device and said light receptor.
Claim 10
Dependent Claim
31 words
An optical pattern detecting apparatus in accordance with claim 1, wherein a substantially cylindrical reflection surface is provided around a light path between the light emitting device and the light stop.
References Cited (Backward Citations)
US3784794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |