US3868514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handheld reading device
Assignee: Svenska Dataregister AB
•
Filing: 1973-09-24
•
Granted: 1975-02-25
•
Expires: 1993-09-24
Abstract
Abstract A lensless handheld reading pen utilizes a fiber optic system in conjunction with a light source to illuminate an area on a label containing the markings to be read. Light reflected from the label enters the pen through a series of apertures which are dimensioned to permit the maximum amount of light to enter and reach a photoelement while at the same time eliminating internal reflections within the pen cavity from being sensed by the photoelement.
Inventors
- 👤 Rolf B E Israelsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:20
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10881
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
170 words
Handheld reading device for optical reading of markings on a data record, comprising a light-proof casing having an opening therein facing the data record, light from light source means within or outside the casing being transmitted to the data record through said opening and light reflected from the data record being transmitted back through said opening to light receiving means within said casing, characterized in that between said opening and said light receiving means there are at least two apertures a first of which being arranged adjacent to said opening and having a size which is less than the opening, and a second of which being arranged between the first aperture and the light receiving means and having a size which exceeds the size of the first aperture, but is less than the sectional area limited by the inner surfaces of the walls surrounding the apertures at least at some location between the apertures, and that the light beam remains unrefracted from said first aperture to said light receiving means.
Claim 2
Dependent Claim
170 words
Handheld reading device for optical reading of markings on a data record, comprising a light-proof casing having an opening therein facing the data record, light from light source means within or outside the casing being transmitted to the data record through said opening and light reflected from the data record being transmitted back through said opening to light receiving means within said casing, characterized in that between said opening and said light receiving means there are at least two apertures a first of which being arranged adjacent to said opening and having a size which is less than the opening, and a second of which being arranged between the first aperture and the light receiving means and having a size which exceeds the size of the first aperture, but is less than the sectional area limited by the inner surfaces of the walls surrounding the apertures at least at some location between the apertures, and that the light beam remains unrefracted from said first aperture to said light receiving means.
Claim 3
Dependent Claim
17 words
Reading device according to claim 1, characterized in that said apertures are arranged on one single means.
Claim 4
Dependent Claim
34 words
Reading device according to claim 2, characterized in that said aperture means consists of a closed chamber, two of its sides being located opposite to each other having said first and second apertures therein.
Claim 5
Dependent Claim
38 words
Reading device according to claim 1, charaCterized by a third aperture between said first and second apertures which has a size exceeding the size of the first aperture but being less than the size of the second aperture.
Claim 6
Dependent Claim
31 words
Reading device according to claim 1, characterized in that said opening in said casing, apertures and said light receiving meaans are arranged essentially along the longitudinal, center axis of said casing.
Claim 7
Dependent Claim
19 words
Reading device according to claim 1, characterized in that said opening in said casing and said apertures are circular.
Claim 8
Dependent Claim
17 words
Reading device according to claim 1, characterized by a transparent body in said opening of said casing.
Claim 9
Dependent Claim
39 words
Reading device according to claim 1, characterized by at least one light source in said casing and by one or more light conductors extending from said lamp to a region in the vicinity of said opening of said casing.
Claim 10
Dependent Claim
35 words
Reading device according to claim 8, characterized in that said means provided with apertures and the ends of said light conductors are in abutting relationship with a transparent body in said opening of said casing.
Claim 11
Dependent Claim
19 words
Reading device according to claim 1, characterized in that said light receiving means consists of a light sensitive element.
Claim 12
Dependent Claim
41 words
Reading device according to claim 9, characterized in that said light receiving means includes one end of at least one light conductor the other end of which being located in proximity to a light sensitive element within or outside said casing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |