US4409646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-effect light source, especially usable as a projector for photography, motion pictures and television or as a lighting apparatus
Assignee: Individual
•
Filing: 1981-01-13
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Granted: 1983-10-11
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Expires: 2001-01-13
Abstract
Abstract A light source usable as a projector for photography, motion pictures, television, or as a light panel, or as a lighting apparatus. This light source comprises a polyhedric housing constituted by a rectangular back 2, two trapezoidal lateral sides 4 inclined to the back 2, two limiting frontal faces 5 closed by translucent sheets, and one central face 10 for accessories such as grid-spots, filters, etc. The back 2 has an opening 3 for a light source, and interior 54 and exterior 80 reflectors are articulated on the back 2. This device makes it possible to vary the characteristics of the light source, notably its intensity, the angle lit, its color saturation, the contrast, the shadow sharpness, the reflections, etc., so as to obtain the desired effects. It is light in weight and inexpensive.
Inventors
- 👤 Mardick Baliozian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:19
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; F; F21; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
204 words
A device to be used with a light source for use as a projector for lighting subjects in photography, motion pictures, or television, comprising: a polyhedric housing with a rectangular opaque light-reflecting back, two opaque light-reflecting longitudinal sides contiguous with the long sides of said back and disposed at an angle to the plane of said back, a central front rectangular side between opposed edges of said longitudinal sides, two contiguous inclined front translucent sides each of which is situated between said central front rectangular side and the corresponding extremity of said reflecting back, said inclined sides being visible in a direction parallel with the reflecting back, two reflecting flaps mounted on opposite sides of the light source inside the housing and articulated on the back between the lateral sides, in order to move from one extreme position to the other, namely a first position where they are at an angle with respect to the plane of the back and a second position where they lie against it, means to control these flaps so as to place them and keep them in the selected angular position, and adjustable exterior reflecting flaps articulated on the edges common to the back and the translucent lateral faces.
Claim 2
Independent Claim
204 words
A device to be used with a light source for use as a projector for lighting subjects in photography, motion pictures, or television, comprising: a polyhedric housing with a rectangular opaque light-reflecting back, two opaque light-reflecting longitudinal sides contiguous with the long sides of said back and disposed at an angle to the plane of said back, a central front rectangular side between opposed edges of said longitudinal sides, two contiguous inclined front translucent sides each of which is situated between said central front rectangular side and the corresponding extremity of said reflecting back, said inclined sides being visible in a direction parallel with the reflecting back, two reflecting flaps mounted on opposite sides of the light source inside the housing and articulated on the back between the lateral sides, in order to move from one extreme position to the other, namely a first position where they are at an angle with respect to the plane of the back and a second position where they lie against it, means to control these flaps so as to place them and keep them in the selected angular position, and adjustable exterior reflecting flaps articulated on the edges common to the back and the translucent lateral faces.
Claim 3
Independent Claim
93 words
A device according to one of claims 1, wherein at least two reflecting flaps are mounted on both sides of the light source inside the housing and articulated on the back between the lateral sides, in order move go from one extreme position to the other, namely a first position where they are placed at an angle with respect to the plane of the back and a second position where they lie against it, and means to control these flaps so as to place them and keep them in the selected angular position.
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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |