FIELD: lighting.
SUBSTANCE: invention relates to lighting engineering. Illumination device comprises housing (5) with plurality of compartments (3), each compartment comprising respective light emission window (15), light source (11), and stack of crossed prismatic sheets (10). Light issued by light source (11)during operation propagates through prismatic sheets and subsequently through light emission window. Orientation of stack of sheets (10) is different for each compartment, thus causing each compartment to issue a different beam of light. Light source (10) of each compartment is separately switchable, thus enabling easy setting of type of beam issued form illumination device. Optionally diffuser (17, 23) is provided at one side or at both sides of stack of prismatic sheets.
EFFECT: high contrast, brightness and uniformity of illumination.
14 cl, 10 dwg
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