LIGHTING DEVICE Russian patent published in 2023 - IPC F21L2/00 F21S8/00 

FIELD: lighting engineering.

SUBSTANCE: invention relates to the field of lighting engineering and is intended for use as a lighting device in office, retail, sports, industrial and other premises. A lighting device containing a bearing surface with radiation sources installed on it, characterized by the indicatrix of their radiation, and a reflecting surface forming the resulting light flux created by them is claimed. In this case, the number n1 of radiation sources installed along the length of the bearing surface is selected within 1≤n1≤10⁵, in each cross-section of the device throughout the radiation sources installed on it, the angle α between the cross-sectional line of the bearing surface at the installation point of the radiation source and the vertical is selected within 10°<α≤65°, and the angle β between the plane approximating the curved reflecting surface and the bearing surface is selected within 30°≤β≤130°. The cross-sectional line of the curved reflecting surface is approximated by successively conjugate sections of circles, the number of n2 of which is selected within 1≤n2≤10, and, accordingly, the radii R1, R2, R3, … R9, R10 of these sections are selected from the ratio 1≤ (R1+R2+R3+…+R9+R10) /(R1) ≤1+107. Angle γ of the indicatrix orientation of the light flux of the radiation source is selected in the range 20°≤γ≤130°, the indicatrix of diffuse reflection of the light flux by the surface is characterized by angle δ selectable in the range of 10°≤δ≤170°, and the indicatrix of the final formed light flux of its total intensities as the intensity of the light flux from the radiation source and the intensity of the reflected surface of the light flux is characterized by the angle ε selectable in the range of 10°≤ε≤170°. Moreover, the angle δ of the diffuse reflection indicatrix by the reflecting surface of the radiation incident on it is corrected using an experimental coefficient ρ, the value of which, depending on the magnitude of its roughness, is chosen within 0,7≤ρ≤1,2.

EFFECT: increase in the uniformity of the radiation intensity in space in the range of observation angles.

2 cl, 2 dwg