US4859032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand-held magnifier apparatus
Assignee: Designs for Vision Inc
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Filing: 1988-04-15
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Granted: 1989-08-22
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Expires: 2008-04-15
Abstract
Abstract There is disclosed a hand-held magnifying apparatus which employs a lens assembly housing. The housing has first and second magnifying lenses located therein whereby the lenses can be adjusted to obtain a variable focal length. The housing is terminated at one end in a cylindrical hooded section which has coupled thereto an angled power source accommodating section. The power source accommodating section includes a source of illumination and cylindrical condensing lenses which operate to condense the light pattern from the illumination source and to change the light pattern from an elliptical to a circular pattern to thereby uniformly illuminate the text or material to be viewed via the magnifying lens assembly.
Inventors
- 👤 Richard E. Feinbloom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:13
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
117 words
A magnifying apparatus, comprising: a first housing section having a top portion for containing at least one magnifying lens assembly with a top opening to enable a person to view via said lens, said housing having a bottom opening surrounded by a peripheral wall, a second housing section coupled to said peripheral wall at an angle thereto and containing a source of illumination adapted to transmit a beam of light, and means located in said second housing section for shaping said beam so that a circular pattern of light is provided about said bottom opening of said first housing section when said first housing section is placed on a flat surface to completely cover said bottom opening.
Claim 2
Dependent Claim
117 words
A magnifying apparatus, comprising: a first housing section having a top portion for containing at least one magnifying lens assembly with a top opening to enable a person to view via said lens, said housing having a bottom opening surrounded by a peripheral wall, a second housing section coupled to said peripheral wall at an angle thereto and containing a source of illumination adapted to transmit a beam of light, and means located in said second housing section for shaping said beam so that a circular pattern of light is provided about said bottom opening of said first housing section when said first housing section is placed on a flat surface to completely cover said bottom opening.
Claim 3
Dependent Claim
43 words
The apparatus according to claim 1, wherein said first housing section includes a top section containing said one magnifying lens and a bottom section, with said top and bottom sections adjustably coupled one to the other to enable a user focus said lens.
Claim 4
Dependent Claim
43 words
The apparatus according to claim 1, wherein said second housing section includes a handle section coupled thereto which handle section enables a user to grip said apparatus while further serving to support said apparatus when said apparatus is placed on a horizontal plane.
Claim 5
Dependent Claim
29 words
The apparatus according to claim 1 further including an adjustable diaphragm member located in said second housing section and operative to vary the diameter of said beam of light.
Claim 6
Dependent Claim
15 words
The apparatus according to claim 1, wherein said source of illumination is a light bulb.
Claim 7
Dependent Claim
33 words
The apparatus according to claim 5, further including polarizing means located in said second housing section and operative to polarize said beam of light prior to directing the same about said bottom opening.
Claim 8
Dependent Claim
16 words
The apparatus according to claim 1, wherein said source of illumination is a fiber optic cable.
Claim 9
Dependent Claim
33 words
The apparatus according to claim 1, wherein said means for shaping said beam is a cylindrical lens assembly and located in said second housing with the axis oriented to provide said circular pattern.
Claim 10
Dependent Claim
26 words
The apparatus according to claim 8, wherein said cylindrical lens assembly is a plus cylindrical lens having its axis at 90° with respect to the horizontal.
Claim 11
Dependent Claim
41 words
The apparatus according to claim 1, wherein said means for shaping said beam includes a diaphragm having an elliptical aperture followed by a spherical lens assembly for converting said light beam as directed through said elliptical aperture to said circular pattern.
Claim 12
Dependent Claim
32 words
The apparatus according to claim 1 wherein said first housing section includes a second lens positioned near said bottom opening and operative to form a magnifying assembly with said one magnifying lens.
Claim 13
Dependent Claim
17 words
The apparatus according to claim 11, wherein said lenses provide a magnification between 8 to 16 X.
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) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |