Patent US3798668A successfully refreshed from Google Patents.
US3798668A
Expired / Lapsed
US
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Camera light
Assignee: Bell and Howell Co
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Filing: 1972-10-05
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Granted: 1974-03-19
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Expires: 1992-10-05
Abstract
Abstract A light for a camera having an adjustable focal length or ''''zoom'''' lens. The lens carries a cam surface upon which a cam follower rides. The follower is coupled to a link assembly which supports a light source in the form of a lamp positioned adjacent a reflector. As the focal length of the lens is varied, the follower rides upon the cam transmitting movement to the link assembly. The link assembly in turn shifts the position of the lamp with respect to the reflector. In this manner, the beam width of the camera light is automatically varied to correspond with the field of view of the ''''zoom'''' lens.
Inventors
- 👤 R Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:15
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B7/00; G03B7/006
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
In combination, a camera having a rotatably mounted lens for adjusting focal length, a camera light for illuminating the subject being photographed, said camera light including a reflector and a light source with means mounting the light source and reflector for relative movement along the axis of the light source and reflector, the improvement comprising means operatively associated with said rotatable lens and said mounting means for transmitting rotational movement of said lens to relative movement between said light source and reflector along said axis so as to vAry the relative position of the light source and reflector in accordance with the focal length setting of the rotatably adjustable focal length lens.
Claim 2
Dependent Claim
112 words
In combination, a camera having a rotatably mounted lens for adjusting focal length, a camera light for illuminating the subject being photographed, said camera light including a reflector and a light source with means mounting the light source and reflector for relative movement along the axis of the light source and reflector, the improvement comprising means operatively associated with said rotatable lens and said mounting means for transmitting rotational movement of said lens to relative movement between said light source and reflector along said axis so as to vAry the relative position of the light source and reflector in accordance with the focal length setting of the rotatably adjustable focal length lens.
Claim 3
Dependent Claim
122 words
In combination, a camera having a lens with an adjustable focal length, a camera light for illuminating the subject being photographed, said camera light including a reflector and a light source, means mounting the reflector and light source for relative movement so as to vary the beam width of the light from the camera light, and coupling means operatively associated with said mounting means to vary the relative positioning of the light source and reflector in accordance with the focal length setting of the adjustable focal length lens, said coupling means including camming means coupled to the adjustable lens, said camming means defining the relative positional relationship of the light source and reflector as determined by the focal length of the lens.
Claim 4
Dependent Claim
122 words
In combination, a camera having a lens with an adjustable focal length, a camera light for illuminating the subject being photographed, said camera light including a reflector and a light source, means mounting the reflector and light source for relative movement so as to vary the beam width of the light from the camera light, and coupling means operatively associated with said mounting means to vary the relative positioning of the light source and reflector in accordance with the focal length setting of the adjustable focal length lens, said coupling means including camming means coupled to the adjustable lens, said camming means defining the relative positional relationship of the light source and reflector as determined by the focal length of the lens.
Claim 5
Dependent Claim
21 words
The combination of claim 2 wherein said coupling means includes a link assembly between said camming means and said mounting means.
Claim 6
Dependent Claim
57 words
The combination of claim 3 wherein said camming means includes a cam surface carried by the adjustable lens and a follower riding along said cam surface, said follower being coupled to said link assembly and serving to establish the relative position of said light source and reflector through said link assembly as determined by said cam surface.
Claim 7
Dependent Claim
37 words
The combination of claim 4 wherein said coupling means includes biasing means for biasing said link assembly against said camming means to assure that said link assembly maintains a preselected position as determined by said camming means.
Claim 8
Dependent Claim
134 words
In combination with a camera having a lens with an adjustable focal length and a camera light for illuminating the subject being photographed, said camera light including a reflector and a light source, the improvement comprising mounting said light source for movement with respect to the reflector, and including means coupling said light source to the adjustable lens to vary the position of the light source with respect to the reflector and thereby vary the beam width of the light from the camera light in accordance with the focal length setting of the adjustable focal length lens, said coupling means including a camming means coupled to the adjustable lens, said camming means defining the positional relationship of the light source with respect to the reflector as determined by the focal length of the lens.
Claim 9
Dependent Claim
134 words
In combination with a camera having a lens with an adjustable focal length and a camera light for illuminating the subject being photographed, said camera light including a reflector and a light source, the improvement comprising mounting said light source for movement with respect to the reflector, and including means coupling said light source to the adjustable lens to vary the position of the light source with respect to the reflector and thereby vary the beam width of the light from the camera light in accordance with the focal length setting of the adjustable focal length lens, said coupling means including a camming means coupled to the adjustable lens, said camming means defining the positional relationship of the light source with respect to the reflector as determined by the focal length of the lens.
Claim 10
Dependent Claim
23 words
The apparatus of claim 6 wherein said coupling means includes a link assembly coupled to said camming means and to the light source.
Claim 11
Dependent Claim
55 words
The apparatus of claim 7 wherein said camming means includes a cam surface carried by the adjustable lens and a follower riding along said cam surface, said follower coupled to said link assembly and serving to position said light source with respect to said reflector through said link assembly as determined by said cam surface.
Claim 12
Dependent Claim
37 words
The apparatus of claim 8 wherein said coupling means includes biasing means for biasing said link assembly against said camming means to assure that said link assembly maintains a preselected position as determined by said camming means.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |