EP0069306A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Hologram scanner
Assignee: Mitsubishi Electric Corp
•
Filing: 1982-06-25
•
Granted: —
•
Expires: 2002-06-25
Abstract
Abstract A hologram scanner includes a rotatable hologram disk (7) on which a plurality of hologram lenses (6) are arranged circumferentially, and a light beam guide mechanism (18,19, 20) for successively shifting irradiation regions of the hologram disk in a predetermined direction with respect to the direction of rotation of the hologram disk, to apply a light beam (2) successively to the hologram lenses on the hologram disk, so that the scanning of a reading window (12) with the light beam (2) is effected in all directions with high density. The hologram scanner is employable as a bar code reading device in a POS or UPC system.
Inventors
- 👤 Kazuro C/O Mitsubishi Denki K.K. Nishi
- 👤 Koichiro C/O Mitsubishi Denki K.K. Kurahashi
- 👤 Tsutomu C/O Mitsubishi Denki K.K. Hashimoto
- 👤 Toshihiko C/O Mitsubishi Denki K.K. Senoo
- 👤 Shinji C/O Mitsubishi Denki K.K. Yamato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 03:05
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10861; G06K7/10871; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/106
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
A hologram scanner, characterised by: a hologram disk (7) including a plurality of hologram lenses (6) arranged circumferentially thereon; means (17) for rotating said hologram disk; light beam guide means (18, 19, 20) for successively irradiating regions of said hologram disk, to apply a light beam (2) successively to said hologram lenses (6) on said hologram disk (7); and a reading window (12) for receiving an object to be read by said light beam (2) applied through said hologram lenses (6).
Claim 2
Dependent Claim
81 words
A hologram scanner, characterised by: a hologram disk (7) including a plurality of hologram lenses (6) arranged circumferentially thereon; means (17) for rotating said hologram disk; light beam guide means (18, 19, 20) for successively irradiating regions of said hologram disk, to apply a light beam (2) successively to said hologram lenses (6) on said hologram disk (7); and a reading window (12) for receiving an object to be read by said light beam (2) applied through said hologram lenses (6).
Claim 3
Dependent Claim
38 words
A hologram scanner as claimed in claim 1, in which said light beam guide means comprises a rotary disk (18) and means (23, 24) for turning said disk (18), and mirror means (19, 20) associated with said disk.
Claim 4
Dependent Claim
40 words
A hologram scanner as claimed in claim 2, said mirror means comprising a-first mirror (19) provided at the center of said rotary disk (18) in a manner so as to turn together with said rotary disk; and a second mirror
Claim 5
Dependent Claim
38 words
(20) provided at a peripheral portion of said rotary disk (18), said light beam (2) being introduced via said first and second mirrors to predetermined ones of said hologram lenses (6) by rotation of said rotary disk (18).
Claim 6
Dependent Claim
38 words
(20) provided at a peripheral portion of said rotary disk (18), said light beam (2) being introduced via said first and second mirrors to predetermined ones of said hologram lenses (6) by rotation of said rotary disk (18).
Claim 7
Dependent Claim
67 words
A hologram scanner as claimed in claim 2 or 3 wherein light beam scanning lines applied to said reading window (12) are arranged in a circular array due to relative rotation of said hologram disk (7) and said rotary disk (18), and wherein scanning lines in opposite directions are provided, said scanning lines in opposite directions being shifted so as not to be overlapped with one another.
Claim 8
Dependent Claim
28 words
A hologram scanner as claimed in any one of claims 2 to 4 wherein said hologram disk (7) and said rotary disk (18) are rotated in opposite directions.
Claim 9
Dependent Claim
29 words
A hologram scanner as claimed in any one of claims 2 to 4 wherein said hologram disk (7) and said rotary disk (18) are rotated in the same direction.
Claim 10
Dependent Claim
29 words
A hologram scanner as claimed in any one of claims 2 to 6 wherein said first and second mirrors are fixed to said rotary disk in predetermined angular orientations.
Claim 11
Dependent Claim
30 words
A hologram scanner as claimed in any one of claims 2 to 7 wherein said rotary disk and said hologram disk are arranged to rotate about the same rotary axis.
Claim 12
Dependent Claim
22 words
A hologram scanner as claimed in any one of the preceding claims wherein said light beam guide means comprises optical fiber means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.