US4333127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic flashgun
Assignee: US Philips Corp
•
Filing: 1980-09-22
•
Granted: 1982-06-01
•
Expires: 2000-09-22
Abstract
Abstract Electronic flashgun having a rotatable reflector accommodating a discharge lamp, the reflector having means to move filters in front of the flash discharge lamp. The filters are inserted via an elongate coverable aperture (5) in an end partition (2a).
Inventors
- 👤 Frederik H. Alkema
- 👤 Meerten Luursema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:12
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/0517; G03B2215/0525; G03B2215/0528
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
An electronic flashgun which comprises: a case having an elongate generally concave reflector mounted for rotation about a longitudinal axis, end partitions disposed at the axial extremities of said reflector which extend substantially transverse to said axis, a flash discharge lamp disposed in said reflector, characterized in that one of said end partitions is provided with a slot disposed for mounting an effect filter immediately in front of said reflector and said flash tube.
Claim 2
Dependent Claim
74 words
An electronic flashgun which comprises: a case having an elongate generally concave reflector mounted for rotation about a longitudinal axis, end partitions disposed at the axial extremities of said reflector which extend substantially transverse to said axis, a flash discharge lamp disposed in said reflector, characterized in that one of said end partitions is provided with a slot disposed for mounting an effect filter immediately in front of said reflector and said flash tube.
Claim 3
Dependent Claim
57 words
An electronic flashgun as claimed in claim 1, characterized in that the reflector is located in a transparent hollow cylinder which is rotatable about its longitudinal axis and whose wall surface is provided with a plurality of zones extending in the longitudinal direction over substantially the full axial extent thereof, each zone and having different refraction characteristics.
Claim 4
Dependent Claim
57 words
An electronic flashgun as claimed in claim 1 or 2, further including a screen which can be arranged at an oblique angle to, and extending from, the flashgun case with a major surface facing the flash tube with said reflector in a bounce flash position, at least a portion of said surface having a reflective mirror surface.
Claim 5
Dependent Claim
20 words
An electronic flashgun as claimed in claim 3, characterized in that the screen is mounted by hinges on said case.
Claim 6
Dependent Claim
40 words
An electronic flashgun as claimed in claim 3, characterized in that the reflective mirror surface is provided in the form of an elongate reflective strip on a screen having a diffusely reflecting surface, the screen being detachable from the case.
Claim 7
Dependent Claim
32 words
An electronic flashgun as claimed in claim 5, characterized in that the position of the reflective strip on the screen is adjustable in the direction of the longitudinal axis of the reflector.
References Cited (Backward Citations)
US4194234A
Cited
US4175279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |