US3594566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light projector
Assignee: KNEISLEY ELECTRIC CO
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Filing: 1969-10-13
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Granted: 1971-07-20
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Expires: 1989-10-13
Abstract
Abstract A theatrical spotlight for directing an adjustable diameter focused beam of light at either fixed or moving objects. A highintensity beam of light passes upwardly from a xenon lamp through a shutter, an iris diaphragm and an adjustable lens system. A mirror is positioned to reflect the light beam to the target. The beam diameter and focus are adjusted with a single control lever which simultaneously adjusts the lens system and the iris diaphragm. The shutter is adjustable to cut off either a portion of or all of the light beam.
Inventors
- 👤 Richard F Kneisley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:36
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/16; F21V11/18; F21V11/08; F21V14/00; F21V14/06; F21V14/08; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
176 words
Apparatus for projecting a beam of light having an adjustable beam diameter comprising, in combination, a light source, an iris diaphragm having an adjustable aperture, first and second lenses for controlling the light beam diameter and focus, said first lens being positioned between said second lens and said light source, and iris diaphragm being positioned between said first lens and said light source, cam means for simultaneously moving said first and second lenses between first, second, and third positions, said first lens moving progressively closer to said iris diaphragm as said cam means is moved progressively between said first, second, and third positions, said second lens moving progressively away from said iris diaphragm as said cam means is moved progressively between said first, second, and third positions, and means connecting said iris diaphragm to said cam means for holding said iris diaphragm fully open when said lenses are positioned between said first and second positions and for progressively closing said iris diaphragm as said lenses are moved progressively from said second position to said third position.
Claim 2
Dependent Claim
176 words
Apparatus for projecting a beam of light having an adjustable beam diameter comprising, in combination, a light source, an iris diaphragm having an adjustable aperture, first and second lenses for controlling the light beam diameter and focus, said first lens being positioned between said second lens and said light source, and iris diaphragm being positioned between said first lens and said light source, cam means for simultaneously moving said first and second lenses between first, second, and third positions, said first lens moving progressively closer to said iris diaphragm as said cam means is moved progressively between said first, second, and third positions, said second lens moving progressively away from said iris diaphragm as said cam means is moved progressively between said first, second, and third positions, and means connecting said iris diaphragm to said cam means for holding said iris diaphragm fully open when said lenses are positioned between said first and second positions and for progressively closing said iris diaphragm as said lenses are moved progressively from said second position to said third position.
Claim 3
Dependent Claim
59 words
Apparatus for projecting a beam of light having an adjustable beam diameter, as defined in claim 1, and including an adjustable shutter means positioned between said iris diaphragm and said light source for controlling light between said light source and the aperture in said iris diaphragm, said shutter means being adjustable between an open position and a closed position.
Claim 4
Dependent Claim
25 words
Apparatus for projecting a beam of light having an adjustable beam diameter, as defined in claim 1, wherein said light source is a xenon lamp.
Claim 5
Dependent Claim
225 words
Apparatus for projecting a beam of light having an adjustable beam diameter comprising, in combination, a light source, an iris diaphragm, first and second lenses for controlling the light beam diameter and focus, said first lens being positioned between said second lens and said light source, said iris diaphragm being positioned between said first lens and said light source, a first carriage for mounting said first lens, a second carriage for mounting said second lens, means for moving said second carriage between first, second, and third positions progressively away from said iris diaphragm, a cam track movable with said second carriage, follower means for engaging said cam track, said cam track and said follower means moving said first carriage progressively towards said iris diaphragm as said second carriage is moved progressively from said first position to said third position, a second cam track movable with said second carriage, a second follower means engaging said second cam track for adjusting the aperture in said iris diaphragm, said second cam track and said second follower means holding said iris diaphragm in a fully open position while said second carriage is positioned between said first and second positions, and said second cam track and said second follower means progressively closing said iris diaphragm as said second carriage is moved progressively from said second position to said third position.
Claim 6
Dependent Claim
225 words
Apparatus for projecting a beam of light having an adjustable beam diameter comprising, in combination, a light source, an iris diaphragm, first and second lenses for controlling the light beam diameter and focus, said first lens being positioned between said second lens and said light source, said iris diaphragm being positioned between said first lens and said light source, a first carriage for mounting said first lens, a second carriage for mounting said second lens, means for moving said second carriage between first, second, and third positions progressively away from said iris diaphragm, a cam track movable with said second carriage, follower means for engaging said cam track, said cam track and said follower means moving said first carriage progressively towards said iris diaphragm as said second carriage is moved progressively from said first position to said third position, a second cam track movable with said second carriage, a second follower means engaging said second cam track for adjusting the aperture in said iris diaphragm, said second cam track and said second follower means holding said iris diaphragm in a fully open position while said second carriage is positioned between said first and second positions, and said second cam track and said second follower means progressively closing said iris diaphragm as said second carriage is moved progressively from said second position to said third position.
Claim 7
Dependent Claim
59 words
Apparatus for projecting a beam of light having an adjustable beam diameter, as defined in claim 4, and including an adjustable shutter means positioned between said iris diaphragm and said light source for controlling light between said light source and the aperture in said iris diaphragm, said shutter means being adjustable between an open position and a closed position.
Claim 8
Dependent Claim
247 words
Apparatus for projecting a beam of light having an adjustable beam diameter comprising, in combination, an upwardly directed light source, an iris diaphragm, means mounting said iris diaphragm above said light source to pass a controlled-diameter beam of light, first and second lenses for controlling the diameter and focus of the light beam passing through said iris diaphragm, a first carriage mounting said first lens above said iris diaphragm, a second carriage mounting said second lens above said first lens, means for moving said second carriage between first, second, and third positions progressively away from said iris diaphragm, a cam track movable with said second carriage, follower means for engaging said cam track, said cam track and said follower means moving said first carriage progressively towards said iris diaphragm as said second carriage is moved progressively from said first position to said third position, a second cam track movable with said second carriage, a second follower means engaging said second cam track for adjusting the aperture in said iris diaphragm, said second cam track and said second follower means holding said iris diaphragm fully open while said second carriage is positioned between said first and second positions, said second cam track and said second follower means progressively closing said iris diaphragm as said second carriage is moved progressively from said second position to said third position, and means for aiming the upwardly directed beam of light emitted from said second lens at an object to be illuminated.
Claim 9
Dependent Claim
247 words
Apparatus for projecting a beam of light having an adjustable beam diameter comprising, in combination, an upwardly directed light source, an iris diaphragm, means mounting said iris diaphragm above said light source to pass a controlled-diameter beam of light, first and second lenses for controlling the diameter and focus of the light beam passing through said iris diaphragm, a first carriage mounting said first lens above said iris diaphragm, a second carriage mounting said second lens above said first lens, means for moving said second carriage between first, second, and third positions progressively away from said iris diaphragm, a cam track movable with said second carriage, follower means for engaging said cam track, said cam track and said follower means moving said first carriage progressively towards said iris diaphragm as said second carriage is moved progressively from said first position to said third position, a second cam track movable with said second carriage, a second follower means engaging said second cam track for adjusting the aperture in said iris diaphragm, said second cam track and said second follower means holding said iris diaphragm fully open while said second carriage is positioned between said first and second positions, said second cam track and said second follower means progressively closing said iris diaphragm as said second carriage is moved progressively from said second position to said third position, and means for aiming the upwardly directed beam of light emitted from said second lens at an object to be illuminated.
Claim 10
Dependent Claim
59 words
Apparatus for projecting a beam of light having an adjustable beam diameter, as defined in claim 6, and including an adjustable shutter means positioned between said iris diaphragm and said light source for controlling light between said light source and the aperture in said iris diaphragm, said shutter means being adjustable between an open position and a closed position.
References Cited (Backward Citations)
US1691475A
Cited
US3069536A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |