LIGHT POINTER Russian patent published in 1999 - IPC

FIELD: electrical engineering. SUBSTANCE: maximal size of device housing L1 and its minimal size L2 conform to condition 1,05 ≤ (L1+L2)/L1 ≤ 2. Housing volume V1 and its free volume which is not filled with device members V2 conform to condition 1,01 ≤ (V1+V2)V1 ≤ 1,99. Maximal area of device information cover S1 and total area which is covered by information decorative members S2 conform to condition 1 ≤ (S1+S2)/S1 ≤ 2.. Minimal A1 and maximal A2 three-dimensional angles with at least 90% of light beams which are output by light generation members of unit for conversion of electricity to light conform to condition 1,3 ≤ (A1+A2)/A2 ≤ 2.. Minimal L3 and maximal L4 distance between optical axes of beams of each light generation members which are located in centers of information decorative members conform to condition 1 ≤ (L3+L4)/L4 ≤ 2.. EFFECT: possibility to achieve desired characteristics of illumination in given directions, decreased power consumption, increased service life. 3 cl, 3 dwg