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US3592525A Expired / Lapsed US ⏱️ 0.0 years remaining

Illuminating headpiece for spectacles including secondary magnifying lenses

Assignee: Carl Zeiss Vision Australia Holdings Ltd
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Filing: 1969-05-13
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Granted: 1971-07-13
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Expires: 1989-05-13
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Abstract

Abstract An illuminating headpiece suitable for use by dentists wherein a pair of secondary lenses extend through apertures in respective spectacle glasses in a frame so as to be closer to the pupil of the user than the spectacle glass. The spectacle frame carries on it a lamp housing for illuminating the object to be viewed through the secondary lenses. The secondary lenses may each be constituted by a single lens having an inner lens surface of toroidal or spherical shape and an outer lens surface of aspherical shape.

Inventors

  • 👤 Donald Herbert Schultz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 22:49
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/06; A61B1/0661; A61B1/0692; A61B3/00; A61B3/0008; A61B3/10; A61B3/13; A61B3/132; G; G02; G02C; G02C11/00; G02C11/04; G02C7/00; G02C7/02; G02C7/08; G02C7/088

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 201 words
An illuminating headpiece comprising: a spectacle frame, a pair of spectacle glasses in the frame, apertures in the glasses, a pair of secondary lens magnifying systems extending through the respective apertures and carried by the spectacle glasses, each secondary lens magnifying system being constituted by a single unitary element having an inner negative lens surface and an outer positive lens surface of an aspherical shape, a headpiece housing, a lamp housing carried by and extending upwardly from the headpiece housing, a lamp positioned within the lamp housing with its central axis extending vertically, a curved reflector at the rear of the lamp, a lens system at the front of the lamp, the lenS system being constituted by a single element having an aspherical face, the curved reflector and the lens system having a common axis, a pivot means, said pivot means connecting the lamp housing to the headpiece housing whereby the direction of light transmitted by the lamp housing is varied when the lamp housing is tilted, means positioning the filament of said lamp substantially on the central axis of the reflector and lens system, the secondary lens magnifying systems being directed to have their axes intersect at a work plane.
Claim 2
Dependent Claim 201 words
An illuminating headpiece comprising: a spectacle frame, a pair of spectacle glasses in the frame, apertures in the glasses, a pair of secondary lens magnifying systems extending through the respective apertures and carried by the spectacle glasses, each secondary lens magnifying system being constituted by a single unitary element having an inner negative lens surface and an outer positive lens surface of an aspherical shape, a headpiece housing, a lamp housing carried by and extending upwardly from the headpiece housing, a lamp positioned within the lamp housing with its central axis extending vertically, a curved reflector at the rear of the lamp, a lens system at the front of the lamp, the lenS system being constituted by a single element having an aspherical face, the curved reflector and the lens system having a common axis, a pivot means, said pivot means connecting the lamp housing to the headpiece housing whereby the direction of light transmitted by the lamp housing is varied when the lamp housing is tilted, means positioning the filament of said lamp substantially on the central axis of the reflector and lens system, the secondary lens magnifying systems being directed to have their axes intersect at a work plane.
Claim 3
Dependent Claim 17 words
An illuminating headpiece according to claim 1, wherein said inner negative lens surface is of toroidal shape.
Claim 4
Dependent Claim 17 words
An illuminating headpiece according to claim 1, wherein said inner negative lens surface is of spherical shape.
Claim 5
Dependent Claim 19 words
An illuminating headpiece according to claim 1 further comprising an infrared filter in front of the lamp housing means.

References Cited (Backward Citations)

FR552355A Cited
US1741264A Cited
US1615067A Cited
US2196543A Cited
FR840622A Cited
GB521770A Cited
US2389428A Cited
US2902899A Cited
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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) 1974-07-12 1975-01-11 1975-07-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-07-12 1979-01-11 1979-07-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-07-12 1983-01-11 1983-07-13 $7700.00 Window Closed / Lapsed

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