Selective illumination

Details Selective illumination Selective illumination

1978-06-05

1980-09-30

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

250221, 307116, 315154, 315194, 315360, 340541, 362125, H05B 3702, F21P 300

Patent

active

042258081

ABSTRACT:
Different portions of an area are selectively highlighted in response to observer proximity. An adjustable dimmer establishes the non-highlight illumination level for each area. The dimmer is overridden by observer-sensing circuitry to produce the highlight illumination level.

REFERENCES:
patent: 3446976 (1969-05-01), Shaw
patent: 3459961 (1969-08-01), Ravas
patent: 3500455 (1970-03-01), Ross et al.
patent: 3573543 (1971-04-01), Grindstaff
patent: 3898383 (1975-08-01), Herbits

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