LIGHT-EMITTING MODULE, LAMP, LIGHTING DEVICE AND DISPLAY DEVICE Russian patent published in 2016 - IPC H01L33/60 

FIELD: physics.

SUBSTANCE: light emitting unit (150) emits light through window (104) and light output comprises base (110), solid state emitter (154, 158) and partially diffusing light reflecting layer (102). Base (110) has light-reflecting surface (112), facing window (104) of light output. Light-reflecting surface (112) has coefficient of reflection Rbase base, which is ratio between amount of light reflected light-reflecting surface, and amount of light incident on light-reflecting surface. Solid-state light emitter (154, 158) emits light of first colour range (114), comprises top surface (152, 158) and has coefficient of reflection R_SSL of solid-state light emitter, which is defined by ratio between amount of light which is reflected by solid-state emitter (154, 156) of light and light incident on upper surface (152, 158) of solid-state light emitter (154, 156). Largest linear size d_SSL of upper surface (106) at least one of solid-state light emitter is set as maximum distance from point on upper surface (152, 158) at least one of solid-state light emitter to other point on upper surface (152, 158) at least one of solid-state light emitter along a straight line. Window (104) of light output comprises at least a portion of partially scattering reflecting layer (102). Ratio of areas of solid-state light emitter ρ_SSL is set as ratio between area of upper surface of at least one of solid-state light emitter and area of light-reflecting surface of base. Gap with distance h exists between upper surface (152, 158) of at least one of solid-state light emitter (154, 156) and partially scattering reflecting layer (102). Relative efficient light-emitting module can be obtained, if linear size of 0.3×d_SSL≤ h ≤ 5×d_SSL for 0 < ρ_SSL< 0.1, 0.15×d_SSL≤ h ≤ 3×d_SSL for 0.1 ≤ ρ_SSL≤ 0.25, and 0.1×d_SSL≤ h ≤ 2×d_SSL for ρ_SSL> 0.25, and if coefficient of reflection Rbase base exceeds 70 % and exceeds R_SSL coefficient of reflection of solid-state light emitter.

EFFECT: invention enables to form in relation to efficient light-emitting module.

15 cl, 21 dwg