US4239360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indication device in the finder of a single-lens reflex camera
Assignee: Pentax Corp
•
Filing: 1978-05-16
•
Granted: 1980-12-16
•
Expires: 1998-05-16
Abstract
Abstract A light indicating the readiness of an electric flash unit is provided in the camera view finder at the same location as the other exposure value indicators. The flash readiness indicator light is preferably an LED and is located either among or immediately adjacent an LED array for indicating the shutter speed setting.
Inventors
- 👤 Fumio Urano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/18; G03B17/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
113 words
In an indication device in the finder of a single-lens reflex camera in which characters representing exposure values are arranged in said finder and exposure value indicating elements are arranged so as to indicate said characters, respectively, wherein the improvement is characterized in that an electric flash indicating element for indicating the readiness of an electric flash is located among said exposure value indicating elements so that a user of the camera need not shift his eye from the exposure value indicating elements in order to see said electric flash indicating element, wherein said characters indicate shutter speed values, and wherein said electric flash indicating element also indicates the X synchronization shutter speed.
Claim 2
Dependent Claim
113 words
In an indication device in the finder of a single-lens reflex camera in which characters representing exposure values are arranged in said finder and exposure value indicating elements are arranged so as to indicate said characters, respectively, wherein the improvement is characterized in that an electric flash indicating element for indicating the readiness of an electric flash is located among said exposure value indicating elements so that a user of the camera need not shift his eye from the exposure value indicating elements in order to see said electric flash indicating element, wherein said characters indicate shutter speed values, and wherein said electric flash indicating element also indicates the X synchronization shutter speed.
Claim 3
Dependent Claim
37 words
An indication device as claimed in claim 1, characterized in that said electric flash indicating element comprises a light emission diode whose emitted light is different in color from that of the remaining exposure value indicating elements.
Claim 4
Dependent Claim
30 words
An indication device as claimed in claim 1, characterized in that said indicating element employed as said electric flash ready light is different in configuration from the remaining indicating elements.
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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) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |