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Light emitting device

A technology of light-emitting devices and light-emitting elements, which can be used in projection devices, signal devices, lighting devices, etc., and can solve the problems of inability to distinguish between reflected light and non-reflected light

Pending Publication Date: 2019-12-06
NICHIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is impossible to distinguish reflected light from non-reflected light to control light output such as focusing, diffusing, or collimating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0022] figure 1 It is a schematic diagram of the light emitting device 1 of the first embodiment. The light-emitting device 1 has a base 10 , a chassis 20 , a semiconductor laser element 30 , a reflective member 40 , and a lens member 50 . In addition, in the light emitting device 1 , the base 20 , the semiconductor laser element 30 , the reflective member 40 , and the lens member 50 are arranged on the plane of the base 10 . In addition, in the light-emitting device 1, the lens member 50 is arranged above the semiconductor laser element 30 and the light reflecting member 40 arranged on the arrangement surface on the base 10 based on the arrangement surface on which the light reflection member 40 is arranged. . Hereinafter, constituent elements of the light emitting device 1 will be described. It should be noted that “above” in this specification refers to the direction in which the semiconductor laser element 30 is arranged based on the arrangement surface of the base 10 ....

no. 2 approach ＞

[0050] The light emitting device 2 of the second embodiment is a device in which light emitted from a plurality of semiconductor laser elements is emitted to the outside of the light emitting device 2 through a lens member. In addition, the light-emitting device 2 of the second embodiment includes: a package having a light-emitting function for emitting controlled light; and a mounting substrate. It should be noted that there may be no mounting substrate. Figure 5 to Figure 8 It is a figure explaining the light emitting device 2. Figure 5 A perspective view showing a light emitting device 2, Figure 6 It shows a top view of each constituent element disposed in the frame marked with the base 210 of the light emitting device 2, Figure 7 shows a top view of the light emitting device 2, Figure 8 express will Figure 7 The sectional view of the light-emitting device on the straight line connecting VIII-VIII. It should be noted that, for the convenience of explanation, Fi...

Embodiment 1

[0085] Next, an example of the light emitting device 2 shown in the second embodiment will be described. The light-emitting device 2 of Example 1 has a substrate 200 with a side length of about 10 mm, and the side length on the S1 side is longer than the side length on the S2 side by about several mm. In addition, as for the length of the outer surface of the base part 210, the side on the S1 side is about 7.0 mm, and the side on the S2 side is about 6.0 mm. In addition, the height from the lower surface of the bottom of the base 210 to the apex of the lens portion of the lens member 250 is about 5.1 mm, and the light emitting device 2 has a height of about 6.0 mm including the thickness of the substrate 200 .

[0086] The height of the base 210 from the lower surface of the bottom to the upper surface 211 of the side part is about 2.0 mm, the height of the lens part 250 from the lower surface to the apex of the lens part is about 2.5 mm, and the height of the lens part from t...

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Abstract

The invention provides a light emitting device, which can differentiate reflected light and non-reflected light and can carry out light emission control such as light converging, light diffusion, light collimation, and the like. The light emitting device comprises a light emitting element, which emits light; a light reflection part, which is provided with a reflection surface for reflecting light;and a lens part, which is provided with a lens unit for controlling the moving direction of light from the light emitting element. The lens unit comprises a first lens shape and a second lens shape related with the control of moving direction of light. The first lens shape controls the moving direction of reflection light, which moves towards the reflection surface and is reflected by the reflection surface. The second lens shape controls the moving direction of non-reflection light of emitted light. The non-reflection light does not comprise the reflection light towards the reflection surface by taking the end of the reflection surface as the boundary, and the non-reflection light is the light towards the area out of the reflection surface by taking the end of the reflection surface as the boundary.

Description

technical field [0001] The present invention relates to light emitting devices. Background technique [0002] Conventionally, it is known that a lens is used to condense, diffuse, or collimate light emitted from a light emitting element. For example, Patent Document 1 discloses a lighting fixture for a vehicle in which light emitted from a light emitting element enters a projection lens with or without a reflector and is emitted to the outside. [0003] Patent Document 1: (Japanese) Unexamined Patent Application No. 2010-67380 [0004] However, in the light-emitting device disclosed in Patent Document 1, both incident light reflected by the reflector and incident light without reflection pass through the same lens structure. Therefore, it is impossible to distinguish between reflected light and non-reflected light, and to perform light emission control such as focusing, diffusing, or collimating light. Contents of the invention [0005] The light-emitting device of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S41/16F21S41/25F21S41/36F21S8/00F21V7/04F21V5/04G03B21/20F21Y115/30F21W107/10F21W102/00H01S5/02315H01S5/0233
CPCF21S41/16F21S41/25F21S41/36F21S8/00F21V7/04F21V5/04G03B21/2066G03B21/2033G03B21/2013F21Y2115/30F21W2107/10F21W2102/00H01S5/02315H01S5/0233F21V7/05F21V13/04F21V29/505F21Y2103/10F21Y2113/10H01S5/0071H01S5/4031H01S5/02216G02B19/0052G02B19/0028G02B27/143H01S5/005H01S5/02326H01S5/02345H01S5/02253F21V5/045F21V7/0066H01S5/4093H01S5/0235H01S5/02255
Inventor 三浦创一郎
Owner NICHIA CORP
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