Lighting module
A light-emitting module, light-emitting surface technology, applied in optical signals, optical elements for changing the spectral characteristics of emitted light, lighting and heating equipment, etc., can solve problems such as difficulty in obtaining light distribution characteristics
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no. 1 Embodiment approach
[0038] (Vehicle lamps)
[0039] The light emitting module according to this embodiment can be mounted on a vehicle lamp. The lamps for vehicles include, for example, headlights, taillights, turn signals, position lights, turn signals, and the like. figure 1 It is a cross-sectional view showing a schematic configuration of a vehicle lamp including the light emitting module according to the present embodiment.
[0040] figure 1 The illustrated vehicle lamp 100 includes: a lamp body 102; a transparent cover 104 attached to the lamp body 102 so as to cover the opening of the lamp body 102; Inside the lamp chamber 106.
[0041] Such as figure 1 As shown, depending on the shape and arrangement of the vehicle lamp 100 , the light emitting module 10 may be arranged such that the module's longitudinal direction Y is inclined with respect to the vehicle front-rear direction X. In this case, the direction X' perpendicular to the substrate of the light emitting module 10 is usually t...
no. 2 Embodiment approach
[0066] Figure 6 It is a side view of the light emitting module according to the second embodiment. In addition, the same code|symbol is used about the structure similar to the light emitting module 20 which concerns on 1st Embodiment, and description is abbreviate|omitted suitably. Figure 6 The light-emitting module 50 shown has: a substrate 22; a light-emitting element 24, which is arranged on the substrate 22, and emits ultraviolet light or short-wavelength visible light; Visible light excited by ultraviolet light or short-wavelength visible light emitted by the element 24 .
[0067] The light wavelength conversion unit 52 has a main light exit surface 54 and a sub light exit surface 56 having substantially the same area as the main light exit surface 54 . The main light exit surface 54 has concavo-convex shapes formed on the surface. Figure 7 (a) is a figure showing the state of total reflection of light when the exit surface is a flat surface, Figure 7 (b) is a dia...
no. 3 Embodiment approach
[0076] In the light emitting module 20 according to the first embodiment, the main light exit surface 54 according to the second embodiment may be used instead of the main light exit surface 32 . As a result, the amount of light emitted from the main light emitting surface becomes relatively larger than the amount of light emitted from the sub-light emitting surface, so the direction to become the peak of the directional characteristic can be emitted toward the main light. The vertical direction of the surface is further approached.
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Abstract
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