Low cost automatically illuminated document holder

摘要: A low cost document holder automatically illuminates a under light conditions. An energy-saving system having switch that turns on lamp when front cover is at an angle to rear of between 45 and 135 degrees. The turned off the less than degrees or greater prevent battery drain left open cannot completely close. Optimized positioning places centerline cone illumination maximum thirty from enable use wattage lamp. resultant enables components be permanently enclosed in has appearance, dimensions thickness standard holders. Advantages within are reliability, ease cleaning, market entry manufacture.