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Head-up display device and lens unit

A technology of a head-up display device and a lens unit, which is applied in the directions of lenses, optical elements, transportation and packaging, etc., can solve the problem of uneven brightness of the emitted light, and achieve the effect of suppressing uneven brightness.

Active Publication Date: 2018-08-31
NIPPON SEIKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the head-up display device described in Patent Document 1 has a problem that a sharp concave portion is formed between adjacent convex lens portions, and radiated light from adjacent light sources is superimposed on the concave portion and emitted from the lens unit. Unevenness occurs in the brightness of emitted light

Method used

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  • Head-up display device and lens unit
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  • Head-up display device and lens unit

Examples

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Embodiment Construction

[0044] An embodiment of the head-up display device of the present invention will be described with reference to the drawings. In addition, in order to facilitate understanding of the structure of the head-up display device, the description will be made assuming that the traveling direction of the vehicle is the X direction, the width direction of the vehicle is the Y direction, and the vertical direction is the XYZ coordinates in the Z direction. In addition, the description will be given in the manner that the direction indicated by the arrows of the X, Y, and Z coordinates is specified as + (positive), and the opposite direction is specified as-(negative).

[0045] The head-up display device 1 of this embodiment is the following device, such as figure 1 As shown, it is installed inside the dashboard of the vehicle 2 and irradiates the display light L on the front glass 2a (projection member). The display light L is reflected to the driver M side through the front windshield 2a,...

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Abstract

The purpose of the present invention is to provide a head-up display device, and a lens unit, in which luminance unevenness of exit light exiting the lens unit is small even when an interval of lightsources arrayed in matrix is different between rows and columns. The head-up display device of the present invention is provided with: a plurality of light sources arrayed in matrix in a Y-direction and a Z-direction; and a lens unit (36) in which a convex lens portion (36b) for collecting radiant light radiated from the light sources is formed opposing each light source. The plurality of light sources are arranged at an interval A in a Z-direction and at an interval B, which is smaller than the interval A, in the Y-direction. The lens unit (36) has a first connection portion (a) and second connection portions (b) formed at boundaries of the adjacent convex lens portions (36b). The first connection portion (a) extends in the Y-direction, and the second connection portions (b) extend in theZ-direction. A width of a short direction of the first connection portion (a) is smaller than a width of a short direction of the second connection portions (b).

Description

Technical field [0001] The invention relates to a head-up display device and a lens unit. Background technique [0002] As a head-up display device that displays information on a windshield or the like of a vehicle, a type disclosed in Patent Document 1 is known. The head-up display device includes a plurality of light sources mounted on a wiring substrate, and a plurality of convex lens portions formed to face each light source. According to this head-up display device, since the convex lens portions facing the light source respectively converge the radiation light radiated from each light source, the radiation light can be condensed with good efficiency. [0003] However, the head-up display device described in Patent Document 1 has a problem in that sharp concave portions are formed between adjacent convex lens portions, and the radiated light from the adjacent light source is superimposed on the concave portion and emitted from the lens unit. The brightness of the emitted lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/01B60K35/00G02B3/00
CPCG02B27/0101G02B27/0149G02B3/0037B60K35/23B60K2360/336B60K35/28B60K35/215B60K35/60G02B27/01G02B3/00B60K35/00G02B3/0056G02B3/0075G02B2027/0118
Inventor 春山裕辉金德大地
Owner NIPPON SEIKI CO LTD
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