TWM579699U - Light guiding lens and vehicle lamp - Google Patents

Abstract

A light guiding lens includes a bottom surface, a light exit surface, a first reflective surface and a reflective structure. The bottom surface includes a first side, a second side opposite to the first side, and a light incident portion. The light exit surface is connected to the first side. The first reflective surface is opposite to a part of the bottom surface and connected to the light exit surface. The light incident portion is located in an orthogonal projection area of the first reflective surface projected on the bottom surface. The reflective structure includes a plurality of reflective surfaces connected between the second side and the first reflective surface. A vehicle lamp having the light guiding lens is further disclosed.

Description

Light guide lens and vehicle headlight

The present invention relates to a light guiding element, in particular to a light guiding lens for guiding light emitted by a light emitting element of a headlight and a vehicle headlight having the light guiding lens.

In recent years, headlights for vehicles have gradually adopted light-emitting diodes as light sources.

When applied to a headlight of a vehicle, the light-emitting diode must be equipped with an appropriate light guiding element to make the headlight emit the desired light shape and angle. The light emitting diode can be disposed outside a surface of the light guiding element, and the light guiding element further has a reflecting surface to reflect the light emitted by the light emitting diode and a light emitting surface to emit the light reflected by the reflecting surface.

The reflective surface of the light guiding element of the prior art is formed by plating a reflective layer, which increases the complexity of fabrication of the light guiding element, which in turn leads to higher manufacturing costs.

In addition, the reflective surface of the light guiding element of the prior art has only a single curvature in any cross section, and the curvature must be extended upward to a certain height to receive most of the light of the light emitting diode in the corresponding section. The light guiding element must have a corresponding thickness, which in turn leads to a failure in manufacturing cost.

In addition, the reflecting surface formed by the electroplating reflective layer is a metal reflecting surface, which absorbs light emitted by a part of the light emitting diode and causes light loss.

The present invention provides a light guiding lens with a low manufacturing cost.

The present invention provides a vehicle headlight with a lower manufacturing cost.

The light guiding lens provided by the present invention has a bottom surface, a light emitting surface, a first reflecting surface, and a reflective structure. The bottom surface has a first side edge, a second side edge opposite the first side edge, and a light incident portion between the first side edge and the second side edge. The light exit surface is connected to the first side of the bottom surface. The first reflecting surface is partially connected to the light emitting surface with respect to the bottom surface, and the light incident portion is located in a projection area where the first reflecting surface is vertically projected to the bottom surface. The reflective structure includes a plurality of reflective surfaces coupled between the second side of the bottom surface and the first reflective surface. The light guiding lens can be used for guiding the light of the light emitting element, the light emitting element corresponding to the light incident portion and providing the first partial light to be reflected from the light emitting surface through the first reflecting surface, and providing the second partial light to the plurality of reflecting surfaces via the reflective structure Reflected in sequence and emerged from the light exit surface.

The vehicle headlight provided by the present invention includes a lamp holder, a light source device, and the above-described light guiding lens. The light source device includes a circuit board disposed in the socket and a light emitting element disposed on the circuit board. The light guiding lens is adapted to direct the light provided by the light emitting element.

In an embodiment of the present invention, the light incident portion is entirely located in a projection area in which the first reflecting surface is perpendicularly projected on the bottom surface.

In an embodiment of the present invention, the first reflective surface is a convex paraboloid, and the normal of the bottom surface passing through the center of the light incident portion passes through the focal point of the convex paraboloid.

In an embodiment of the present invention, the reflective surfaces of the reflective structure include a second reflective surface, a third reflective surface, and a fourth reflective surface. The second reflecting surface is connected to the first reflecting surface and extends upward in a direction away from the first reflecting surface and the bottom surface. The third reflective surface is coupled to the second reflective surface and extends downwardly away from the second reflective surface and protrudes from the second side. The fourth reflecting surface is connected between the third reflecting surface and the second side. The second portion of the light provided by the light-emitting element is sequentially reflected by the second reflective surface, the third reflective surface, and the fourth reflective surface, and is emitted from the light-emitting surface.

In an embodiment of the present invention, the second reflecting surface, the third reflecting surface, and the fourth reflecting surface are parabolic in a cross-sectional view parallel to the bottom surface.

In an embodiment of the present invention, the reflective structure further includes an extended surface connected between the third reflective surface and the fourth reflective surface, and the extended surface is parallel to the bottom surface.

In an embodiment of the present invention, the first side has opposite first and second ends, and the first end to the second end is defined as a preset direction, and the first reflective surface includes the predetermined direction. a plurality of convex surfaces each having a step difference between the convex surfaces and the adjacent convex surfaces, the reflective structure comprising a plurality of reflecting portions arranged in a predetermined direction, each of the reflecting portions and the adjacent reflecting portions having a step difference, and the number of the convex portions and the number of the convex portions The number of the reflecting portions is the same, and each convex surface is connected to each of the reflecting portions.

In an embodiment of the present invention, the light guiding lens is formed by a straight line extending perpendicular to the bottom surface and passing through a section of the first side and the second side along a predetermined direction.

In an embodiment of the present invention, the light guiding lens is formed by bending perpendicular to the bottom surface and passing through a section of the first side and the second side in a predetermined direction.

In an embodiment of the present invention, the light incident portion of the bottom surface includes at least one concave portion or at least one convex portion.

In an embodiment of the present invention, the light exiting surface includes a first area and a second area connected between the first area and the bottom surface.

In an embodiment of the present invention, the first region and the second region have different roughnesses or patterns from each other.

In an embodiment of the present invention, the vertical distance of the first reflecting surface and the bottom surface is greater than the vertical distance of the reflecting structure surface and the bottom surface.

In an embodiment of the present invention, the reflective surfaces of the first reflective surface and the reflective structure are all totally reflective surfaces.

The light guiding lens of the present invention has the first reflecting surface and the reflecting structure respectively guiding the light of different parts of the light emitting element, so that most of the light emitted by the light emitting element can be emitted by the first reflecting surface and the reflecting structure. The light-emitting lens does not need to be plated with a reflective layer as a whole, thereby simplifying the manufacturing process of the light guiding lens and further reducing the manufacturing cost. Moreover, if all the light of the light-emitting element is guided by the first reflecting surface, the light guiding lens is generally thickened as in the prior art so that the first reflecting surface can be fully extended, but the light guiding lens of the present invention is the first reflection. The surface and the reflective structure respectively guide the light of different parts of the light-emitting element, and the first reflective surface does not need to be extended excessively, so that the thickness of the light guide lens of the present invention can be smaller than that of the light guide lens having only the first reflective surface, further reducing the manufacturing. cost. In addition, since it is not necessary to plate the reflective layer, light loss caused by the light of the light-emitting element being absorbed by the reflective layer can be avoided.

The above and other objects, features and advantages of the present invention will become more apparent and understood.

1A is a schematic view of a light guiding lens according to an embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view of the first side and the second side and parallel to the XY plane of FIG. 1A, for example, by A, B, and C in FIG. 1A. A schematic view of the point. Referring to FIG. 1A and FIG. 1B, the light guiding lens 100 of the present embodiment is applied to a vehicle headlight (not shown) to guide light provided by a light emitting element (not shown). The light guiding lens 100 has a bottom surface 110 and a light emitting surface. Face 120, first reflective surface 130, and reflective structure 140. The bottom surface 110 has a first side 111 and a second side 112 opposite to each other and a light incident portion 113 between the first side 111 and the second side 112. The light emitting surface 120 is connected to the first side 111. The first reflecting surface 130 is partially connected to the light emitting surface 120 with respect to the bottom surface 110. The light incident portion 113 is located in the projection region S where the first reflecting surface 130 is vertically projected toward the bottom surface 110. The reflective structure 140 includes a plurality of reflective surfaces connected between the second side 112 and the first reflective surface 130.

In this embodiment, the first reflective surface 130 is a convex paraboloid, and the normal N passing through the center of the light incident portion 113 of the bottom surface 110 passes through the focal point F of the convex paraboloid, and the light emitting element is placed at the focus F to make the first The reflective surface 130 converges the light emitted by the light-emitting element, but is not limited thereto. The first reflective surface 130 may also be a curved surface having other functions.

In the embodiment, the reflective surfaces of the reflective structure 140 include a second reflective surface 141, a third reflective surface 142, and a fourth reflective surface 143. The second reflecting surface 141 is connected to the first reflecting surface 130 and extends upward in a direction away from the first reflecting surface 130 and the bottom surface 110. The third reflecting surface 142 is connected to the second reflecting surface 141 and extends downward in a direction away from the second reflecting surface 141 and protrudes from the second side 112. The fourth reflecting surface 143 is connected between the third reflecting surface 142 and the second side 112. Although the reflective structure of the present embodiment includes three reflective surfaces such as the second reflective surface 141, the third reflective surface 142, and the fourth reflective surface 143, it is not limited thereto.

In this embodiment, the second reflecting surface 141, the third reflecting surface 142, and the fourth reflecting surface 143 are parabolic in a cross-sectional view parallel to the XZ plane (ie, parallel to the bottom surface 110) to have a function of concentrating light, but Not limited to this, these reflective surfaces can also be curved surfaces with other functions.

The light incident portion 113 can be disposed opposite to the light emitting element. In the embodiment, the light incident portion can be a concave portion, but the light incident portion 113 can also be a convex portion or a flat surface, and the light incident portion 113 can be a bottom surface. The 110 may have a contour of a circle, a square or other polygon. It should be noted that although the embodiment only shows one light incident portion 113, the light incident portion 113 may be disposed corresponding to the number of light emitting elements. In the present embodiment, the light incident portion 113 may be entirely located in the projection region S in which the first reflective surface 130 is vertically projected toward the bottom surface 110, but is not limited thereto. In other embodiments, the light incident portion 113 may also be partially located below the reflective structure 140.

In this embodiment, the farthest distance d1 of the first reflective surface 130 and the bottom surface 110 may be greater than the farthest distance d2 of the entire reflective structure 140 and the bottom surface 110. In this embodiment, the first reflective surface 130 is a reflective surface that mainly reflects the light of the light-emitting element, and is connected to the light-emitting surface 120, and thus may have a larger range than the entire reflective structure 140, and thus has a higher height, but not only Limited to this. In other embodiments, the first reflective surface 130 can also be equal to or slightly lower than the reflective structure 140.

FIG. 2 is a schematic diagram of a light source module according to an embodiment of the present invention. Referring to FIG. 2 , the light source module 10 includes a light emitting element 101 and the light guiding lens 100 described above. The light-emitting element 101 may be a light-emitting diode package element, but is not limited thereto, and the light-emitting element 101 may be another solid-state light-emitting element. The light-emitting element 101 corresponds to the light-input portion 113 and provides a first partial light ray L1 to be reflected from the light-emitting surface 120 via the first reflective surface 130. In the embodiment, the first reflective surface 130 is the first partial light ray L1 corresponding to the light-emitting element 101. The total reflection surface. The light-emitting element 101 further provides the second partial light ray L2 to be sequentially reflected from the light-emitting surface 120 via the plurality of reflective surfaces of the reflective structure 140. In this embodiment, the second partial light ray L2 is sequentially passed through the second reflective surface 141, The three reflecting surfaces 142 and the fourth reflecting surface 143 are reflected and emitted from the light emitting surface 120.

In this embodiment, the reflective surfaces of the reflective structure 140 can be designed as a total reflection surface. The fourth reflecting surface 143 and the third reflecting surface 142 may have a fixed angle θ. In one embodiment, the included angle θ is 82 to 98 degrees, and in an embodiment where the light guiding lens is a collecting lens, the included angle θ is 90 degrees. The second partial light ray L2 emitted by the illuminating element 201 can be totally reflected by the second reflecting surface 141 and then directed toward the third reflecting surface 142, and is totally reflected by the third reflecting surface 142 and then directed toward the fourth reflecting surface 143, and then reflected by the fourth reflecting surface 143. The surface 143 is totally reflected and then emitted from the light exit surface 120.

The reflective structure 140 may further include an extended surface 144 connected between the third reflective surface 142 and the fourth reflective surface 143, and the extended surface 144 is parallel to the bottom surface 110. If the bottom surface 110 receives the second partial light L2 from the third reflecting surface 142, a large proportion of the second partial light rays L2 will pass through the bottom surface 110 to generate light leakage, and if the third reflecting surface 142 can be integrally protruded The second side 112 of the bottom surface 110 can effectively reduce the second partial light L2 directly incident on the bottom surface 110 by the third reflecting surface 142 to reduce light leakage. However, limited by the design of the light guiding lens 100, when the fourth reflecting surface 143 and the third reflecting surface 142 maintain an angle θ, and the fourth reflecting surface 143 is directly connected to the third reflecting surface 142, the third The reflecting surface 142 often cannot protrude integrally from the second side 112. As shown by the broken line DL of FIG. 2, the projection area S1 of the third reflecting surface 142 vertically projected along the normal line of the bottom surface 110 covers the fourth reflecting surface 143 and Part of the bottom surface 110. With the extending surface 144 disposed between the third reflecting surface 142 and the fourth reflecting surface 143 in the embodiment, the fourth reflecting surface 143 is connected to the extending surface 144 at a position closer to the light emitting surface 120 than the broken line DL, so that the bottom surface 110 is The two side edges 112 can be retracted in the direction of the light exit surface 120 from the broken line DL, and the overlapping portion with the projection area S1 is reduced or completely outside the projection area S1 to reduce the amount of light leakage on the bottom surface 110. Although the extended surface 144 may also leak light due to being covered in the vertical projection S1, the amount of light of the second partial light L2 directed to the extended surface 144 is much smaller than the amount of light originally incident on the bottom surface 110, and thus the light guiding lens 100 The overall amount of light leakage can be reduced by having an extended surface 144.

FIG. 3 is a vehicle headlight according to an embodiment of the present invention. Referring to FIG. 3, the vehicle headlight 1 of the present embodiment includes a socket 17, a light source device 103, and the light guiding lens 100 of FIG. 2A. The light source device 103 includes a circuit board 102 disposed in the socket 17, and a light-emitting element 101 disposed on the circuit board 102. As previously mentioned, the light guiding lens 100 is adapted to direct the light provided by the light-emitting element 101. The vehicle headlights may be concentrating vehicle headlights, but are not limited thereto.

The light guiding lens 100 of the present embodiment has the first reflecting surface 130 and the reflecting structure 140 respectively guiding different portions of the light emitted by the light emitting element 101, so that most of the light emitted by the light emitting element 101 is on the first reflecting surface 130 and the reflective structure. The guiding of the 140 can be emitted by the light-emitting surface 120, and the light guiding lens 100 does not need to be plated with a reflective layer as a whole, thereby simplifying the manufacturing process of the light guiding lens 100, thereby reducing the manufacturing cost. Moreover, if all the light of the light-emitting element 101 is guided by the first reflecting surface 130, the light guiding lens 100 is generally thickened as in the prior art so that the first reflecting surface 130 can be sufficiently extended. However, the light guiding lens 100 of the present invention is created. The first reflective surface 130 and the reflective structure 140 respectively guide the first partial light L1 and the second partial light L2 of the light emitting element 101, and the first reflective surface does not need to be extended excessively, so that the thickness of the light guiding lens 100 of the present invention can be less than The light guiding lens having the first reflecting surface 130 further reduces the manufacturing cost. In addition, since it is not necessary to plate the reflective layer, light loss caused by the light of the light-emitting element being absorbed by the reflective layer can be avoided.

4 is a schematic view of a light guiding lens according to another embodiment of the present invention. Referring to FIG. 4, the light guiding lens 100a of the present embodiment is substantially the same as the light guiding lens 100 of FIG. 1A, but the first reflecting surface 130a and the light reflecting structure 140a of the embodiment are different from the first reflecting surface 130 of FIG. 1A and reflective. Structure 140. In this embodiment, the first side 111 has an opposite first end 114 and a second end 115. The first end 114 is defined by the first end 114 to the second end 115 as a preset direction f1. The preset direction f1 can be, for example, vertical. XY surface. The first reflecting surface 130a includes a plurality of convex surfaces arranged in a predetermined direction f1, and each convex surface has a step difference between the adjacent convex surfaces. The reflective structure 140a includes a plurality of reflecting portions arranged along a predetermined direction f1, each of the reflecting portions and the adjacent reflecting portions having a step difference, and the number of the convex surfaces is the same as the number of the reflecting portions, and each convex surface is respectively connected to each a reflection part.

For example, the first reflective surface 130a may include a first convex surface 131 arranged in a predetermined direction and two second convex surfaces 132 located at two sides of the first convex surface 131, and the second convex surfaces 132 are away from the bottom surface 110 (for example, vertical) The direction of the XZ plane protrudes from the first convex surface 131. The reflective structure 140a may include a first reflective portion 145 connected to the first convex surface 131 and two second reflective portions 146 protruding from the first reflective portion 141 and protruding from the first reflective portion 141 in a direction away from the bottom surface 110. The second reflecting portions 146 are individually connected to the second convex surfaces 132. However, the first reflective surface 120a may have other numbers of convex surfaces and different convex surface arrangements, and the reflective structure 140a may have other numbers of reflecting portions and reflecting portions.

FIG. 5 is a schematic view of a light guiding lens according to another embodiment of the present invention. Referring to FIG. 5, the light guiding lens 100b of the present embodiment is substantially the same as the light guiding lens 100 of FIG. 1A except that in the embodiment, the light guiding lens 100b is perpendicular to the bottom surface 110b (ie, parallel to XY). And a section through the first side 111 and the second side 112 extending in a straight line along a predetermined direction f1 (ie, a direction perpendicular to the XY plane). A plurality of light-emitting elements (not shown) arranged in a predetermined direction f1 may be disposed under the bottom surface 110b of the light guiding lens 100b of the present embodiment.

FIG. 6 is a schematic view of a light guiding lens according to another embodiment of the present invention. Referring to FIG. 6, the light guiding lens 100c of the present embodiment is substantially the same as the light guiding lens 100b of FIG. 5, except that the light guiding lens 100c of the present embodiment is perpendicular to the bottom surface 110c (ie, parallel to the XY plane). And the section of the first side 111 and the second side 112 is bent and extended along a predetermined direction f1 (ie, a direction perpendicular to the XY plane), wherein the bending change of the light guiding lens 100c is parallel to the XZ plane. A plurality of light-emitting elements (not shown) arranged along the predetermined direction f1 and conforming to the bending of the light guiding lens 100c may be disposed under the bottom surface 110b of the light guiding lens 100b of the present embodiment.

FIG. 7 is a schematic view of a light guiding lens according to another embodiment of the present invention. Referring to FIG. 7, the present embodiment can be applied to all the foregoing embodiments, and is characterized in that the light-emitting surface 120d of the light guiding lens 100d of the present embodiment has a pattern. Corresponding to the different vehicle headlights applied, the light-emitting surface 120d of the light guiding lens 100d may have different patterns to emit light of different light shapes or angles.

FIG. 8 is a schematic view of a light guiding lens according to another embodiment of the present invention. Referring to FIG. 8, the light guiding lens 100e of the present embodiment can be similar to the embodiment of FIG. 7 and can also be applied to the embodiment of FIG. 1A to FIG. 7, except that the light guiding lens 100e of the present embodiment emits light. The face 120e includes a first region 121 and a second region 122 connected between the first region 121 and the bottom surface 110, and the first region 121 and the second region 122 have different roughness or patterns from each other. For example, the first region 121 may be a smooth surface, and the second region 122 is a surface having a roughened structure, but is not limited thereto. The first region 121 may be the foregoing embodiment, such as the main light-emitting region of the first partial light ray L1 of the embodiment of FIG. 2, and the second region may be the main light-emitting region of the second partial light ray L2 of the embodiment of FIG. But it is not limited to this.

In summary, the light guiding lens of the present invention has the first reflecting surface and the reflecting structure respectively guiding the light of different parts of the light emitting element, so that most of the light emitted by the light emitting element is guided by the first reflecting surface and the reflective structure. The lower part can be emitted from the light-emitting surface, and the light guiding lens does not need to be plated with the reflective layer as a whole, thereby simplifying the manufacturing process of the light guiding lens and further reducing the manufacturing cost. Moreover, if all the light of the light-emitting element is guided by the first reflecting surface, the light guiding lens is generally thickened as in the prior art so that the first reflecting surface can be fully extended, but the light guiding lens of the present invention is the first reflection. The surface and the reflective structure respectively guide the light of different parts of the light-emitting element, and the first reflective surface does not need to be extended excessively, so that the thickness of the light guide lens of the present invention can be smaller than that of the light guide lens having only the first reflective surface, further reducing the manufacturing. cost. In addition, since it is not necessary to plate the reflective layer, light loss caused by the light of the light-emitting element being absorbed by the metal reflecting surface can be avoided.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Those skilled in the art to which the present invention pertains may have some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application attached.

1‧‧‧ Vehicle headlights

10‧‧‧Light source module

100, 100a, 100b, 100c, 100d, 100e‧‧‧ light guiding lens

101‧‧‧Lighting elements

102‧‧‧ boards

103‧‧‧Light source device

110, 110b, 110c‧‧‧ bottom

111‧‧‧First side

112‧‧‧Second side

113‧‧‧Into the Department of Light

120, 120d, 120e‧‧‧ shiny surface

121‧‧‧First area

122‧‧‧Second area

130‧‧‧First reflecting surface

131‧‧‧First convex

132‧‧‧second convex surface

140‧‧‧Reflective structure

141‧‧‧Second reflective surface

142‧‧‧ third reflecting surface

143‧‧‧fourth reflecting surface

144‧‧‧Extended face

145‧‧‧First reflection

146‧‧‧Second reflection

17‧‧‧ lamp holder

A, B, C‧‧ points

D1, d2‧‧‧ the farthest distance

F1‧‧‧Preset direction

F‧‧‧ focus

L1‧‧‧ first part of the light

L2‧‧‧ second part of the light

N‧‧‧ normal

S, S1‧‧‧ projection area

Θ‧‧‧ angle

DL‧‧‧dotted line

FIG. 1A is a schematic view of a light guiding lens according to an embodiment of the present invention. 1B is a schematic cross-sectional view of the first side and the second side of FIG. 1A parallel to the XY plane. FIG. 2 is a schematic diagram of a light source module according to an embodiment of the present invention. FIG. 3 is a schematic diagram of a vehicle headlight according to an embodiment of the present invention. 4 is a schematic view of a light guiding lens according to another embodiment of the present invention. FIG. 5 is a schematic view of a light guiding lens according to another embodiment of the present invention. FIG. 6 is a schematic view of a light guiding lens according to another embodiment of the present invention. FIG. 7 is a schematic view of a light guiding lens according to another embodiment of the present invention. FIG. 8 is a schematic view of a light guiding lens according to another embodiment of the present invention.

Claims (15)

A light guiding lens for a vehicle headlight to guide light provided by a light emitting element, and having: a bottom surface having a first side, a second side opposite to the first side, and a light incident portion between the first side and the second side, the light emitting element corresponding to the light incident portion; a light emitting surface connected to the first side of the bottom surface; a first reflective surface, a first portion of the light provided by the light-emitting element passes through the first reflective surface, and is connected to the light-emitting surface, and the light-incident portion is located in a projection area perpendicularly projected by the first reflective surface toward the bottom surface Reflecting from the light exiting surface; and a reflective structure comprising a plurality of reflective surfaces connected between the second side of the bottom surface and the first reflective surface, wherein a second portion of the light provided by the light emitting element passes through the The reflecting surface is sequentially reflected and emitted from the light emitting surface. The light guiding lens of claim 1, wherein the light incident portion is entirely located in the projection area of the bottom surface perpendicularly projected by the first reflecting surface. The light guiding lens of claim 1, wherein the first reflecting surface is a convex paraboloid, and a normal of the bottom surface passing through a center of the light incident portion passes through a focus of the convex paraboloid. The light guiding lens of claim 1, wherein the reflecting surfaces of the reflecting structure comprise: a second reflecting surface connected to the first reflecting surface and extending upward in a direction away from the first reflecting surface and the bottom surface a third reflective surface coupled to the second reflective surface and extending downwardly away from the second reflective surface and protruding from the second side; and a fourth reflective surface coupled to the third reflective surface Between the surface and the second side, the second portion of the light provided by the light-emitting element is sequentially reflected from the second reflective surface, the third reflective surface, and the fourth reflective surface, and is emitted from the light-emitting surface. The light guiding lens of claim 4, wherein the second reflecting surface, the third reflecting surface and the fourth reflecting surface are parabolic in a cross-sectional view parallel to the bottom surface. The light guiding lens of claim 4, wherein the reflecting structure further comprises an extending surface connected between the third reflecting surface and the fourth reflecting surface, and the extending surface is parallel to the bottom surface. The light guide lens of claim 1, wherein the first side has opposite first ends and second ends, and the first end to the second end is defined as a predetermined direction, the first reflective surface And including a plurality of convex surfaces arranged along the predetermined direction, each of the convex surfaces and the adjacent convex surface having a step difference, the reflective structure comprising a plurality of reflecting portions arranged along the predetermined direction, each of the reflecting portions and the adjacent portion The reflection portions have a step difference, and the number of the convex portions is the same as the number of the reflection portions, and each of the convex surfaces is respectively connected to each of the reflection portions. The light guide lens of claim 1, wherein the first side has opposite first ends and second ends, and the first end is defined by the first end as a predetermined direction, and the light guiding lens is Forming a line extending perpendicular to the bottom surface and passing through the first side and the second side along the predetermined direction. The light guide lens of claim 1, wherein the first side has opposite first ends and second ends, and the first end is defined by the first end as a predetermined direction, and the light guiding lens is Formed by a section perpendicular to the bottom surface and passing through the first side edge and the second side edge in the predetermined direction. The light guiding lens of claim 1, wherein the light incident portion of the bottom surface comprises at least one concave portion or at least one convex portion. The light guiding lens of claim 1, wherein the light emitting surface comprises a first area and a second area connected between the first area and the bottom surface. The light guiding lens of claim 11, wherein the first region and the second region have different roughnesses or patterns from each other. The light guiding lens of claim 1, wherein a vertical distance of the first reflecting surface farthest from the bottom surface is greater than a vertical distance of the reflecting structural surface farthest from the bottom surface. The light guiding lens of claim 1, wherein the first reflecting surface and the reflecting surfaces of the reflecting structure are all total reflecting surfaces. A vehicle headlight includes: a lamp holder; a light source device including a circuit board disposed in the lamp holder and a light emitting element disposed on the circuit board; and a light guiding lens adapted to guide a light emitting element Providing light, and having: a bottom surface having a first side, a second side opposite the first side, and a light entering portion between the first side and the second side The light-emitting element corresponds to the light-incident portion; a light-emitting surface is connected to the first side of the bottom surface; a first reflective surface is partially connected to the light-emitting surface with respect to the bottom surface, and the light-incident portion a first portion of the light provided by the light-emitting element is reflected from the light-emitting surface and is emitted from the light-emitting surface; and a reflective structure includes a plurality of The reflective surface is connected between the second side of the bottom surface and the first reflective surface, and a second portion of the light provided by the light-emitting element is reflected from the reflective surface to be emitted from the light-emitting surface.