Design and processing method of a lamp reflector

Abstract

The invention discloses a design and processing method for a reflector of a lamp tube. Specifically, the projection point O of the lamp tube is set, the boundary point R2 of the direct outgoing light from the exit point on the illuminated surface, and the boundary point R1 on the illuminated surface, so that The illuminance in the range of O-R1 is equal to the illuminance in the range of R1-R2, and the position of R1 is obtained according to the energy distribution equation; according to the principle that the energy emitted by the lamp is equal to the energy corresponding to the illuminance on the illuminated surface, the range of O-R1 is listed. The energy conservation equation in the range of R1-R2 and R1-R2 can be used to obtain the generatrix of the upper half curve and the lower half curve; the two are symmetrically copied through the ordinate to obtain the main curve of the reflector, and the main curve of the reflector is obtained by stretching the main curve of the reflector After that, the reflector can be obtained by performing certain processing according to the shape of the reflector body. The design method of the present invention adopts a free-form surface for optical design, the illuminance of the lamp tube is relatively evenly distributed in the cross-sectional direction, and the energy utilization rate of the lamp tube is improved; and the processing method is relatively simple and convenient for production.

Description

technical field [0001] The invention relates to a design method for a lamp reflector, in particular to a design and processing method for a one-way uniform lamp reflector based on a free-form surface. Background technique [0002] Different from the flat light-emitting surface of LED, traditional fluorescent lamps, mercury lamps, etc. can emit light at various angles, and the light-emitting surface is a cylindrical side illuminator. The illumination is not uniform enough; and there are not many secondary light distribution design methods for this type of lamps at present. In the existing fluorescent lamp design methods, most of the fluorescent lamp reflectors with trapezoidal side busbars are designed, followed by arc or symmetrical parabola, and some other devices with uniform light added under the reflector. The disadvantages of these secondary light distribution designs are: on the target lighting surface, either the illuminance distribution is uneven, the energy utiliza...

AI Technical Summary

Problems solved by technology

The disadvantages of these secondary light distribution designs are: on the target lighting surface, the illuminance distribution is uneven, or the energy utilization rate is not high, or the structure is relatively complicated.

In the application of indoor lighting, the uneven illuminance not only makes it more difficult to arrange the lamps, but also the different illuminance received by people at different illuminance points will damage the eyesight

In the application of UV-C sterilization, uneven illumination will cause different inactivation rates of bacteria on different parts of the target surface, which will affect the sterilization effect

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