Patent ID: 8941306
Filing Date: 2015-01-27
Classification: F21V,H05B

Abstract:
1. A night light assembly containing a multiple LED light source and an electronic circuit, wherein said night light assembly is in a space normally lit by any ambient light; and said multiple LED light source is operatively controlled by said electronic circuit to produce a light output from said night light assembly; whereby said light output has a time varying intensity and a time varying light spectrum; and where said light output is initially a higher intensity photopic light output and then changes to a lower intensity scotopic light output during a first time period; where said first time period is less than or equal to the time period required by a normal human eye to adjust from photopic vision to scotopic vision following exposure of said human eye to a sudden reduction of an ambient light; said multiple LED light source is first turned on by said electronic circuit in response to a light-to-dark transition of said ambient light to initially produce said higher intensity photopic light output; said electronic circuit then gradually changes said higher intensity photopic light output from said multiple LED light source to said lower intensity scotopic light output during a said first time period; said lower intensity scotopic light output remains on during a second time period following said first time period until said electronic circuit senses a dark-to-light transition of said ambient light, after which said electronic circuit turns off said multiple LED light source.