LED (Light Emitting Diode) blackboard lamp lens
A technology of LED blackboard lights and blackboard lights, which is applied in the direction of lenses, lighting and heating equipment, instruments, etc., and can solve problems such as large quality, uneven light spots, and large lens volume
Inactive Publication Date: 2018-08-17
JIANGSU UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a LED blackboard lamp lens, which can solve the problems of large volume, high quality and uneven light spot of the existing blackboard lamp lens
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0031] see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Image 6 The present invention is an LED blackboard light lens, the LED blackboard light lens includes two side surfaces 13 with stepped scales, an asymmetrical light-emitting surface 9 with arc texture, and two downwardly concave free-form surface light-emitting surfaces 14 , a frosted free-form light incident surface 15b capable of producing polarized light, two frosted planar light incident surfaces 15a, two cross-sections 6 capable of producing polarized total internal reflection, on the left and right sides of the light exiting surface of the lens There are two protruding long cube structures that are easy to assemble, and the structure includes six planes, of which, the light-emitting surfaces of the two planes are frosted;
[0032] see figure 2 , image 3 with Image 6 , ...
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Abstract
The invention discloses an LED (Light Emitting Diode) blackboard lamp lens, and relates to the technical field of LED lamps. The LED blackboard lamp lens comprises two side surfaces with stepped scales, a light exit surface with unsymmetrical semicircular textures, two downward concave light exit surfaces with free-form surfaces, a frosted light inlet surface with a free-form surface capable of generating polarized light, two frosted plane light inlet surfaces and two cross sections capable of generating total internal reflection of polarized light, wherein two protruding strip cubic structures convenient to assemble are formed on the left and right sides of the light exit surfaces of the lens, each structure comprises six planes, and the light exit surfaces of two planes are frosted surfaces; the integral structure of the LED lens is formed in a way that one cross section with total internal reflection is drawn in the vector direction; and the bottom surfaces of the light exit surfaces of LED lamp beads are closely arranged in parallel to the bottom surface of the lens, and the lens and a blackboard are installed at a certain angle, so that the blackboard is uniformly illuminated.The LED lens can generate strip-shaped light spots which can uniformly illuminate the blackboard, the lighting angle is small, and no yellow spots exist at the edges of the light spots.
Description
technical field [0001] The invention relates to the technical field of LED lighting fixtures, in particular to an LED blackboard lamp lens. Background technique [0002] As the fourth-generation lighting source, LED has become the preferred light source for energy saving and environmental protection due to its small size, low power consumption, high brightness, and fast response speed. Since the LED light source is a Lambertian light source with a large luminous angle, direct use for lighting will cause a large amount of energy loss. Therefore, it is necessary to use the secondary light distribution element to perform secondary light distribution on it to improve the utilization rate of the LED light source. Common secondary light distribution components include LED lenses and reflectors. [0003] Most of the existing blackboard lamp lenses have a small angle, and the cross-section is the outline of a total internal reflection lens. This kind of blackboard lamp lens is bu...
Claims
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Login to View More IPC IPC(8): F21V5/04F21K9/20F21K9/69G02B3/08F21Y115/10
CPCF21V5/04F21K9/20F21K9/69F21Y2115/10G02B3/08
Inventor 孟梦林盼福邵人杰吕柳
Owner JIANGSU UNIV