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Diffuse light distribution optical system and lamps for vehicles

An optical system and light distribution technology, which is applied in the direction of headlights, road vehicles, vehicle parts, etc., can solve the problems of Fresnel reflection loss, light diffusion light distribution and light utilization efficiency reduction, and achieve the effect of efficient diffusion light distribution

Active Publication Date: 2020-08-11
STANLEY ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in a lens whose final exit surface is given an inclination angle, Fresnel reflection loss or the like may occur due to the inclination of the final exit surface, resulting in a decrease in light utilization efficiency when diffusing and distributing the light emitted from the light source.

Method used

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  • Diffuse light distribution optical system and lamps for vehicles
  • Diffuse light distribution optical system and lamps for vehicles
  • Diffuse light distribution optical system and lamps for vehicles

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Embodiment Construction

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0034] In addition, in the drawings used in the following description, in order to facilitate the observation of each component, the scale of the size may be shown differently depending on the component, and the dimensional ratio of each component may not necessarily be the same as the actual situation.

[0035] As an embodiment of the present invention, for example, for figure 1 and figure 2 The vehicle lamp 20 of the diffused light distribution optical system 10 shown will be described. figure 1 It is a plan view showing a schematic configuration of a vehicle lamp 20 having a diffused light distribution optical system 10 . figure 2It is a perspective view showing the main surface configuration of the diffusion light distribution optical system 10 . In the drawings shown below, an XYZ rectangular coordinate system is set, the X-axis direction is represen...

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Abstract

In a diffusion light distribution optical system (10) configured such that a plurality of lens bodies (11) are arranged to be aligned in a vehicle width direction, second emission surfaces (14b) of the plurality of lens bodies (11) form a continuous emission surface (14B) having a semicircular column shape and extending in a line in the vehicle width direction in a state where the second emission surfaces are adjacent to each other, and one or more lens bodies (11B) of the plurality of lens bodies (11) are arranged in a state where an optical axis of a first lens unit (13) is slanted with respect to a vehicle travel direction.

Description

technical field [0001] The invention relates to a diffusion light distribution optical system and a vehicle lamp. In particular, the present invention relates to a diffused light distribution optical system used in combination with a light source and a vehicle lamp having the diffused light distribution optical system. Background technique [0002] Conventionally, a vehicle lamp combining a light source and a lens body has been proposed (for example, refer to Japanese Patent Application Laid-Open No. 2004-241349 and Japanese Patent No. 4068387). In the vehicle lamp, the light from the light source enters the inside of the lens body from the incident surface of the lens body, and part of the light is reflected by the reflection surface of the lens body. Thereafter, the light exits from the exit surface of the lens body to the outside of the lens body. Thus, the light irradiated to the front of the lens body reversely projects the light source image formed in the vicinity of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S41/141F21S41/265F21W102/13F21W107/10F21Y115/10
CPCF21S41/141F21S41/255F21W2102/00F21W2107/10F21S41/147F21S41/26F21S41/27F21S41/322F21S41/285
Inventor 西村将太
Owner STANLEY ELECTRIC CO LTD
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