US5021933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated magnifying glass
Assignee: ARISTO GRAPHIC SYSTEME KG A GERMAN FIRM GmbH
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Filing: 1990-05-09
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Granted: 1991-06-04
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Expires: 2010-05-09
Abstract
Abstract A magnifying glass device has a lens body comprised of a cylindrical portion and a convexly curved lens section both of which are rotationally symmetrical with respect to the cylindrical axis of the cylindrical portion. In the area between the circumferential surface of the cylindrical portion and the path of an edge light beam of the lens section passing through the cylindrical portion, at least one lamp is provided. An air gap is formed in the central area between facing surfaces of the cylindrical portion and the lens section. The light emitted by the lamp is substantially totally reflected by the facing surface of the cylindrical portion. Therefore, the lamp will not be seen by the user, but will provide good illumination for the surface viewed through the magnifying glass device.
Inventors
- 👤 Werner Cordes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:51
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/02
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
87 words
Illumination apparatus for an optical magnifying device having a magnifying lens section disposed atop a cylindrical lens section, comprising: a light emitting device coupled to the cylindrical lens section and adjacent an outer circumferential surface thereof, for emitting light toward an interior of the cylindrical lens section; and a surface of the cylindrical lens section facing the magnifying lens section being formed to cause the light emitted from said light emitting device to be substantially totally reflected from said surface and away from the magnifying lens section.
Claim 2
Dependent Claim
87 words
Illumination apparatus for an optical magnifying device having a magnifying lens section disposed atop a cylindrical lens section, comprising: a light emitting device coupled to the cylindrical lens section and adjacent an outer circumferential surface thereof, for emitting light toward an interior of the cylindrical lens section; and a surface of the cylindrical lens section facing the magnifying lens section being formed to cause the light emitted from said light emitting device to be substantially totally reflected from said surface and away from the magnifying lens section.
Claim 3
Dependent Claim
150 words
An illuminated magnifying glass comprising: a cylindrical lens section having (a) bottom surface, (b) a concave top surface, (c) at least one cavity in an outer circumferential surface thereof, and (d) a cylindrical axis; a convexly curved lens section disposed on top of said cylindrical lens section and rotationally symmetrical about said cylindrical axis; and an illumination device disposed in said at least one cavity of said cylindrical lens section at a position between an outer circumferential surface of said cylindrical lens section and a path of an edge light beam of said curved lens section passing through said cylindrical lens section, for illuminating an object to be viewed through said magnifying glass; said concave top surface of said cylindrical lens section being configured to cause light emitted from said illumination device to be substantially totally reflected away from the curved lens section and toward the object to be viewed.
Claim 4
Dependent Claim
150 words
An illuminated magnifying glass comprising: a cylindrical lens section having (a) bottom surface, (b) a concave top surface, (c) at least one cavity in an outer circumferential surface thereof, and (d) a cylindrical axis; a convexly curved lens section disposed on top of said cylindrical lens section and rotationally symmetrical about said cylindrical axis; and an illumination device disposed in said at least one cavity of said cylindrical lens section at a position between an outer circumferential surface of said cylindrical lens section and a path of an edge light beam of said curved lens section passing through said cylindrical lens section, for illuminating an object to be viewed through said magnifying glass; said concave top surface of said cylindrical lens section being configured to cause light emitted from said illumination device to be substantially totally reflected away from the curved lens section and toward the object to be viewed.
Claim 5
Dependent Claim
106 words
A magnifying glass device with a magnifying glass body having a cylindrical portion and a convexly curved lens section, both of which are rotationally symmetrical with respect to a cylindrical axis of the cylindrical portion, comprising: at least one lamp provided in the cylindrical portion in an area between its circumferential surface and a course of an edge light beam of the lens section passing through the cylindrical portion; and an air gap being defined by facing surfaces of the cylindrical portion and the lens section to cause light emitted by the lamp to be substantially totally reflected by the facing surface of the cylindrical portion.
Claim 6
Dependent Claim
106 words
A magnifying glass device with a magnifying glass body having a cylindrical portion and a convexly curved lens section, both of which are rotationally symmetrical with respect to a cylindrical axis of the cylindrical portion, comprising: at least one lamp provided in the cylindrical portion in an area between its circumferential surface and a course of an edge light beam of the lens section passing through the cylindrical portion; and an air gap being defined by facing surfaces of the cylindrical portion and the lens section to cause light emitted by the lamp to be substantially totally reflected by the facing surface of the cylindrical portion.
Claim 7
Dependent Claim
22 words
A magnifying glass device in accordance with claim 1, wherein the air gap is rotationally symmetrical in respect to the cylindrical axis.
Claim 8
Dependent Claim
25 words
A magnifying glass device in accordance with claim 4, wherein the air gap extends as far as of the edge beam of the lens section.
Claim 9
Dependent Claim
21 words
A magnifying glass device in accordance with claim 5, wherein the facing surface of the cylindrical portion is concavely curved upward.
Claim 10
Dependent Claim
30 words
A magnifying glass device in accordance with claim 6, wherein a plurality of lamps are provided in the cylindrical portion and are disposed in pairs diametrically opposed to each other.
Claim 11
Dependent Claim
26 words
A magnifying glass device in accordance with claim 7, wherein the lamps are disposed in an outwardly radially open annular groove provided in the cylindrical portion.
Claim 12
Dependent Claim
30 words
A magnifying glass device in accordance with claim 5, wherein a plurality of lamps are provided in the cylindrical portion and are disposed in pairs diametrically opposed to each other.
Claim 13
Dependent Claim
26 words
A magnifying glass device in accordance with claim 9, wherein the lamps are disposed in an outwardly radially open annular groove provided in the cylindrical portion.
Claim 14
Dependent Claim
30 words
A magnifying glass device in accordance with claim 4, wherein a plurality of lamps are provided in the cylindrical portion and are disposed in pairs diametrically opposed to each other.
Claim 15
Dependent Claim
26 words
A magnifying glass device in accordance with claim 11, wherein the lamps are disposed in an outwardly radially open annular groove provided in the cylindrical portion.
Claim 16
Dependent Claim
21 words
A magnifying glass device in accordance with claim 4, wherein the facing surface of the cylindrical portion is concavely curved upward.
Claim 17
Dependent Claim
30 words
A magnifying glass device in accordance with claim 13, wherein a plurality of lamps are provided in the cylindrical portion and are disposed in pairs diametrically opposed to each other.
Claim 18
Dependent Claim
26 words
A magnifying glass device in accordance with claim 14, wherein the lamps are disposed in an outwardly radially open annular groove provided in the cylindrical portion.
Claim 19
Dependent Claim
21 words
A magnifying glass device in accordance with claim 3, wherein the facing surface of the cylindrical portion is concavely curved upward.
Claim 20
Dependent Claim
30 words
A magnifying glass device in accordance with claim 16, wherein a plurality of lamps are provided in the cylindrical portion and are disposed in pairs diametrically opposed to each other.
Claim 21
Dependent Claim
26 words
A magnifying glass device in accordance with claim 17, wherein the lamps are disposed in an outwardly radially open annular groove provided in the cylindrical portion.
Claim 22
Dependent Claim
30 words
A magnifying glass device in accordance with claim 3, wherein a plurality of lamps are provided in the cylindrical portion and are disposed in pairs diametrically opposed to each other.
Claim 23
Dependent Claim
26 words
A magnifying glass device in accordance with claim 19, wherein the lamps are disposed in an outwardly radially open annular groove provided in the cylindrical portion.
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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) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |