Display device for indicating the setting of a zoom lens

Details Display device for indicating the setting of a zoom lens Display device for indicating the setting of a zoom lens

1988-04-12

1989-08-08

Adams, Russell E.

35419513, 354222, 3542891, G03B 1720, G03B 1312

Patent

active

048557820

ABSTRACT:
A display device in a camera with a zoom lens, for providing a visual indication of the setting of the zoom lens. It includes a zoom encoder (10) for detecting the zoom lens setting, a liquid crystal display (8) having a plurality of display segments (S1-S15) disposed in an arcuate pattern, and drive circuits (24, 25) for driving the display segments. A micro-computer (20) controls the drive circuits, based on the zoom setting as detected by the zoom encoder (10), such that the state of each of the display segments can be changed by the drive circuits in response to a change in the angle of view of the zoom lens.
The display device can provide an intuitively perceivable visual indication with the arcuate array of display segments (S1-S15).

REFERENCES:
patent: 4478493 (1984-10-01), Yokota
patent: 4529283 (1985-07-01), Oshima et al.
patent: 4639111 (1987-01-01), Harvey
patent: 4652104 (1987-03-01), Harvey
patent: 4682870 (1987-07-01), Atkinson

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