Patent ID: 9572305
Date: 2017-02-21
CPC Classifications: A01G,F21V,F21Y,Y02P

Claim:
1. A phosphor diffusion sheet luminaire for agricultural lighting, comprising: a lamp shell, having an accommodating space therein, and an assembly entrance at a side thereof that communicates with the accommodating space; a light source unit, located in the accommodating space and disposed on an inner side wall of said lamp shell corresponding to the assembly entrance; a disc body, mounted in the accommodating space and gripped on an inner wall of said lamp shell, where said disc body is provided with a plurality of tanks at a side corresponding to said light source unit, the tanks being disposed in a spaced array, and a fraction of the tanks being filled with a plurality of the phosphors, in which a ratio of the phosphors at each tank is not the same; and a diffusion sheet, mounted near the assembly entrance of said lamp shell and further to block the assembly entrance, and a side of said diffusion sheet corresponding to said disc body being provided with a plurality of arc recess bars in line, and each of the arc recess bars being formed by a plurality of arc notches joined side by side, and a parallel direction of the arc notch and a parallel direction of the arc recess bar being perpendicular to each other, said diffusion sheet is further an optical brightened sheet; wherein, a ray of light from said light source unit illuminating said disc body and irradiating respective phosphors and the tanks without the phosphors therein, followed by irradiating to said diffusion sheet, the ray passing through said diffusion sheet irradiating plants, and a wavelength of the ray varying according to a different ratio of the phosphors through which the ray passes, with a setup of the arc notch of the arc recess bar at said diffusion sheet, the ray of various wavelengths coming out in adequate wavelengths by means of light transmission, refraction and absorption, which is beneficial to control a growth of plants; and wherein an arc curvature of the arc notch of the arc recess bar on said diffusion sheet features parabolic pattern distribution, and an opening of each arc notch being ten times wider than a visible light wavelength yet narrower than an area radiated by said light source unit.