Unlock instant, AI-driven research and patent intelligence for your innovation.

Vehicle Headlamps

一种前照灯、车辆的技术，应用在车头灯、车辆部件、照明装置等方向，能够解决偏振光无法连结、无助配光图案热点的形成和鲜明的截止线的形成等问题

Active Publication Date: 2021-09-14
KOITO MFG CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the vehicle headlamp of Patent Document 1, when the polarization conversion element of Patent Document 2 is arranged between the reflector and the focal point of the reflector, even though the polarized light transmitted through the polarization separation plane directly The focal point is connected, but the polarized light reflected by the polarized light separation surface cannot be connected with the same focal point as the polarized light transmitted through the polarized light separation surface
Therefore, even if the polarized light reflected by the polarized light separation surface matches the transmitted polarized light, the reflected polarized light component does not contribute to the formation of hot spots and sharp cut-off lines in the light distribution pattern. There is a problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle Headlamps
  • Vehicle Headlamps
  • Vehicle Headlamps

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] Below, based on Figure 1 to Figure 4 Preferred embodiments of the present invention will be described. In each figure, the direction of the road seen from each part of the vehicle headlamp or the driver of the vehicle equipped with the vehicle headlamp is (upper: lower: left: right: front: rear = Up: Lo: Le: Ri: Fr: Re) will be described.

[0026] pass figure 1 and figure 2 A vehicle headlamp according to a first embodiment will be described. The vehicle headlamp 1 of the first embodiment includes a lamp body 2 , a front cover 3 and a headlamp unit 4 . The lamp body 2 has an opening on the front side of the vehicle, and the front cover 3 is made of translucent resin, glass, etc., and is attached to the opening of the lamp body 2 to form a lamp chamber S inside. figure 1 The illustrated headlight unit 4 is configured by integrating a high beam headlight unit 5 and a low beam headlight unit 6 with a metal support member 7 , and is arranged inside a lamp housing S...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a vehicle headlamp capable of improving the light-gathering utilization efficiency of light emitted from a light source. A vehicle headlamp (1), comprising: a main reflector (10) having an elliptical main reflective surface (10a); and a light source (8) configured to be located at a first focal point of the main reflective surface (10) (F1) and opposite to the main reflection surface (10), wherein, there is: a reflective polarizing plate (13), configured between the main reflection mirror (10) and the second focal point (F2) of the main reflection mirror (10) Auxiliary reflector (11), opposite configuration with reflective polarizer (13), will reflect again based on reflective polarized light (B12) of reflective polarizer (13), so that it gathers light to main reflection surface (10 ) of the second focal point (F2); and a 1 / 4 wavelength plate (14), configured between the reflective polarizer (13) and the auxiliary reflector (11), and configured between the auxiliary reflector (11) and the main reflector between the second focal point (F2) of the mirror (10).

Description

technical field [0001] The present invention relates to a vehicle headlamp capable of improving the efficiency of collecting and utilizing light emitted from a light source. Background technique [0002] Patent Document 1 discloses a vehicle headlamp in which a reflector image 3 The emitted light from the light source is reflected so as to be converging on the front, and the reflected light is transmitted through a liquid crystal panel (liquid crystal shutter) arranged near the focal point and a projection lens in front thereof to display a light distribution pattern. Since the liquid crystal panel generally cannot transmit one of the P-polarized light and the S-polarized light due to its characteristics, there is a problem in that only half of the light can be used. [0003] On the other hand, Patent Document 2 discloses a polarization conversion element in which figure 1 In this method, light is separated into S-polarized light and P-polarized light by a reflective pola...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F21S41/33F21S41/135F21S41/20F21S41/64F21V9/14F21Y115/10
CPCF21V9/14F21S41/135F21S41/285F21S41/33F21S41/64F21S41/148F21S41/645
Inventor 丰嶋隆延杉浦直树
Owner KOITO MFG CO LTD