CN114450518A - Lens member and light source module - Google Patents

Lens member and light source module Download PDF

Info

Publication number
CN114450518A
CN114450518A CN202080068664.5A CN202080068664A CN114450518A CN 114450518 A CN114450518 A CN 114450518A CN 202080068664 A CN202080068664 A CN 202080068664A CN 114450518 A CN114450518 A CN 114450518A
Authority
CN
China
Prior art keywords
light
lens member
light source
lens
central convex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202080068664.5A
Other languages
Chinese (zh)
Inventor
达川正士
中西快之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Publication of CN114450518A publication Critical patent/CN114450518A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/27—Thick lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A lens component (1) has a front surface (10), a lateral side (20), a rear convex surface (30), and a medial side (40). The front surface (10) has a central convex portion (12) and an annular flat portion (14). The rear convex surface (30) guides light emitted from the light source (51) and incident on the rear convex surface (30) to the central convex portion (12), the central convex portion (12) emits the incident light forward as parallel light, the outer side surface (20) totally reflects the light emitted from the light source (51) and incident on the inner side surface (40) to the annular flat portion (14) as parallel light, and the entire region of the front surface (10) emits light.

Description

Lens member and light source module
Technical Field
The present invention relates to a lens member and a light source module used for a vehicle lamp or the like.
Background
A lens member described in patent document 1 is known.
Documents of the prior art
Patent document
Patent document 1: japanese Kohyo publication No. 2002-505759
Disclosure of Invention
Problems to be solved by the invention
In the lens member described in patent document 1, the entire area of the front surface of the lens member cannot be made to emit light, and is not suitable for a vehicle lamp.
The invention aims to provide a lens component and a light source module which are suitable for a vehicle lamp.
Means for solving the problems
A lens member according to an aspect of the present invention is a lens member for a vehicle lamp for emitting light in a forward direction,
the lens member has:
a front surface facing forward;
an outer side surface curved and extending from a rear side toward the front surface;
a rear convex surface which is provided at a position recessed forward from the outer side surface in a region where an axis passing through the light source and being parallel to the direction of the outgoing light passes, and which is convex rearward; and
an inner side surface connecting a rear end portion of the outer side surface and the rear convex surface,
a cavity opened at the rear is formed by the rear convex surface and the inner side surface,
the front surface has a central convex portion that is a convex shape provided forward in a region through which the axis passes, and an annular flat portion that is continuous from an outer edge of the central convex portion, extends flat in a direction orthogonal to the axis, and is provided annularly to the outer edge of the central convex portion,
the rear convex surface is set to be in the following shape: guiding light emitted from a light source disposed in the cavity and incident on the rear convex surface to the central convex portion,
the central convex part is provided with the following shapes: the light incident on the central convex part is emitted forward as parallel light,
the outer side surface is designed to be in a shape of performing total reflection as follows: guiding light emitted from the light source and incident on the inner side surface to the front surface other than the central convex portion as parallel light,
the entire area of the front surface emits light.
According to the present invention, a lens member and a light source module suitable for a vehicle lamp can be provided.
Drawings
Fig. 1 is a sectional view of a lens member according to an embodiment of the present invention.
Fig. 2 is a front view of the lens component.
Fig. 3 is a sectional view showing a lens member of a reference example.
Fig. 4 is a sectional view of a light source module according to an embodiment of the present invention.
Fig. 5 is a perspective view of the light source module shown in fig. 4.
Fig. 6 is a perspective view of a light source module according to a modification.
Detailed Description
Hereinafter, the present invention will be described based on embodiments with reference to the drawings. The same or equivalent constituent elements, members, and processes shown in the respective drawings are denoted by the same reference numerals, and overlapping descriptions are appropriately omitted. Note that the embodiments are not limited to the invention but are merely exemplary, and all the features and combinations described in the embodiments are not necessarily essential to the invention.
Fig. 1 is a sectional view of a lens member 1 and a light source 51 according to an embodiment of the present invention. Fig. 2 is a front view of the lens part 1. The lens member 1 is used in a vehicle lamp such as a vehicle headlamp for emitting light to the front of a vehicle.
As shown in fig. 1 and 2, the lens member 1 includes a front surface 10, an outer side surface 20, a rear convex surface 30, and an inner side surface 40. The lens member 1 has a substantially truncated cone shape with a diameter decreasing from the front toward the rear when viewed from the side. In addition, in the following description, the direction of light exiting the lens member 1 is defined as forward for convenience. To the left in fig. 1, the front direction.
The front surface 10 is a face having a circular shape facing the front of the lens member 1. The front surface 10 has a central convex portion 12 provided at a central portion, and an annular flat portion 14 provided outside the central convex portion 12.
The central convex portion 12 is provided in a region centered on a point on the front surface 10, which is a region through which the axis Ax passing through the light source 51 and being parallel to the direction of light emitted from the light source 51 passes, the front surface 10. As shown in fig. 1, the central protrusion 12 is formed to be convex toward the front. As shown in fig. 2, the central protrusion 12 is formed to be elliptical when viewed from the front. Further, fig. 1 is a sectional view taken along line a-a of fig. 2.
The annular flat portion 14 is provided continuously from the outer edge of the central convex portion 12 and extends flatly in a direction orthogonal to the direction of the axis Ax. The annular flat portion 14 is annularly provided on the outer edge of the central convex portion 12.
As shown in fig. 2, in the present embodiment, a diffusing portion 15 including a plurality of grooves is formed on the front surface 10. The diffuser 15 diffuses and emits light emitted from the light source 51 in the longitudinal direction of the central convex portion 12. The diffusing portions 15 are formed at both ends of the front surface 10 with respect to the major axis direction (the left-right direction in fig. 2) of the elliptical central convex portion 12. The groove of the diffuser portion 15 extends in the short axis direction (vertical direction in fig. 2) of the elliptical central convex portion 12. The diffuser 15 is formed by applying fine uneven processing such as knurling to the annular flat portion 14.
In the example shown in fig. 2, the diffusion portion 15 is formed at an end portion on the outer side of the central convex portion 12 in the longitudinal direction of the central convex portion 12, but the present invention is not limited thereto. The diffusing portion 15 may be formed, for example, inside both ends of the central convex portion 12 in the longitudinal direction of the central convex portion 12. In this case, the annular flat portion has a C-shape or a partially cut annular shape, but even in the above-described shape, a portion which continues from the outer edge of the central convex portion 12 and extends flatly in the direction orthogonal to the axis Ax is referred to as the annular flat portion 14. The term "annular" as used herein means a shape including a C-shape, one or more circular arcs, and the like.
Returning to fig. 1, the lateral side 20 is provided to curve and extend from the rear of the lens member 1 toward the front. The outer side surface 20 is a curved surface that is rotationally symmetric about the axis Ax. The front side of the outer side surface 20 is provided to be connected to the outer periphery of the front surface 10. The rear side of the outer surface 20 is connected to an inner surface 40 described later.
The rear convex surface 30 is provided at a position recessed forward from the rear end portion of the outer surface 20. The rear convex surface 30 is provided in a region centered on a point through which the axis Ax passes. The rear convex surface 30 is disposed rearward of the central convex portion 12 of the front surface 10. The rear convex surface 30 is formed to become convex toward the rear. When the rear convex surface 30 is viewed from the rear, the rear convex surface 30 is formed in an elliptical shape corresponding to the shape of the central convex portion 12 of the front surface 10. The length (major diameter) of the major axis of the elliptical posterior convex surface 30 is set to be shorter than the major diameter of the elliptical central convex portion 12. The length (short diameter) of the minor axis of the convex rear surface 30 is set to be shorter than the short diameter of the central protrusion 12.
Further, light from the rear convex surface 30 toward the central convex portion 12 spreads and proceeds within the lens member 1. Therefore, the central convex portion 12 has a shape such that the light spread and advanced in this way becomes parallel light parallel to the axis Ax.
Medial side 40 is configured to connect lateral side 20 to posterior convex surface 30. The rear side of medial side 40 is configured to be connected to the rear end of lateral side 20. The front side of the inner side surface 40 is provided to be connected to the outer peripheral portion of the rear convex surface 30. The shape of the inner surface 40 is designed so that light directed from the inner surface 40 toward the annular flat portion 14 becomes parallel light parallel to the axis Ax.
A cavity 45 opened toward the rear is formed at the rear of the lens member 1 by the rear convex surface 30 and the inner side surface 40. When the cavity 45 is viewed from the rear, the cavity 45 is formed in an elliptical shape having the same shape as the shape of the rear convex surface 30 described above. The light source 51 is disposed behind the lens member 1 facing the cavity 45.
Next, the operation of guiding the light emitted from the light source 51 to each portion in front of the lens member 1 will be described.
First, light X1 emitted from the light source 51 in the front direction (the direction of the axis Ax) enters the rear convex surface 30. Light X1 incident on rear convex surface 30 is refracted so as to be incident on central convex portion 12. Specifically, light incident on the central portion of the rear convex surface 30 is guided to the central portion of the central convex portion 12. The light incident on the outer peripheral portion of the rear convex surface 30 is guided to the outer peripheral portion of the central convex portion 12. The light X2 incident on the outer edge of the rear convex surface 30 is guided to the outer edge of the central convex portion 12 (the boundary portion 13 between the central convex portion 12 and the annular flat portion 14). The light X1 incident on the central protrusion 12 is emitted forward as parallel light.
Of the light emitted from the light source 51, the light X3 emitted to the side (in other words, forming an angle equal to or greater than a predetermined angle from the front direction) enters the inner surface 40. The light X3 incident on the inner surface 40 is refracted in a direction away from the axis Ax and enters the outer surface 20. The light X3 incident on the outer surface 20 is totally reflected as parallel light by the outer surface 20, and is guided to the front surface 10 (the annular flat portion 14 and the diffuser portion 15) other than the central convex portion 12. The light X3 incident on the annular flat portion 14 is emitted as parallel light to the front of the lens member 100. The light incident on the diffusion portion 15 is diffused in the left-right direction and emitted to the front.
In this way, in the lens member 1 of the present embodiment, light is emitted from the entire surface of the front surface 10 of the lens member 1, and the lens member 1 includes the central convex portion 12, the annular flat portion 14, and the boundary portion 13 between the central convex portion 12 and the annular flat portion 14. That is, the entire area of the front surface 10 is lighted, and thus the lens part 1 is applied as a lens part for a vehicle lamp.
Fig. 3 is a diagram showing the lens component 100 described in patent document 1 relating to a reference example. Unlike the present embodiment described above, in the lens member described in patent document 1, the entire area of the front surface of the lens member 100 cannot be made to emit light. As shown in fig. 3, light Y1 emitted to the front from the light source 101 and incident on a face 104 opposing the light source 101 is refracted by the face 104, is incident on the concave lens portion 105 from the flat portion 103 in the front surface of the lens member 100, and is emitted as parallel light parallel to the axis Ax. Light Y2 emitted laterally from light source 101 and totally reflected on outer surface 102 enters flat portion 103 of the front surface and is emitted as parallel light parallel to axis Ax. Thus, the lens portion 105 and the flat portion 103 emit light. However, light is not incident on the inclined portion 106 between the lens portion 105 and the flat portion 103, and the inclined portion 106 does not emit light. Therefore, when the lens member 100 is viewed from the front, it appears that an annular dark portion is generated at the boundary between the lens portion 105 corresponding to the inclined portion 106 and the flat portion 103.
Along with the demand for downsizing of the vehicle lamp, downsizing of the lens member is also demanded. In order to meet the above-described requirements, it is preferable to secure a large amount of emitted light in a limited emission region. In the lens member of patent document 1, a dark portion is locally generated, and it is not possible to cope with miniaturization of the lens member.
In contrast, according to the lens member 1 of the present embodiment, the central convex portion 12 and the annular flat portion 14 are provided on the front surface 10 of the lens member 1, being continuous with each other. The lens member 1 of the present embodiment is configured such that light incident from the light source 51 to the outer edge portion of the rear convex surface 30 is guided to the boundary portion 13 between the central convex portion 12 and the annular flat portion 14. Therefore, the boundary portion 13 between the central convex portion 12 and the annular flat portion 14 can be also made to shine, and the entire area of the front surface 10 can be made to shine without generating a dark portion. Therefore, the lens member 1 of the present embodiment is suitable for a vehicle lamp which is required to be downsized. In particular, the lens member 1 of the present embodiment is suitable for vehicle lamps such as headlamps, turn lights, and fog lights.
In addition, as shown in fig. 2, in the lens member 1 of the present embodiment, the central convex portion 12 is formed in an elliptical shape when viewed from the front, and therefore, light can be widely irradiated in the longitudinal direction. Therefore, the lens member 1 is suitable for a vehicle lamp in which a wide light distribution pattern is desired in the left-right direction in front of the vehicle.
In the lens member 1 of the present embodiment, a diffusing portion 15 including a plurality of grooves is formed at an end of the annular flat portion 14 in the longitudinal direction of the central convex portion 12 formed in an elliptical shape. Therefore, the irradiation range of light in the longitudinal direction in the central convex portion 12 formed on the front surface 10 can be further expanded.
Next, a light source module 50 using the lens member 1 of the above-described embodiment will be described.
Fig. 4 is a sectional view of the light source module 50. Fig. 5 is a perspective view of the light source module 50. As shown in fig. 4 and 5, the light source module 50 includes a lens member 1, a light source 51, a substrate 52, a lens holder 53, and a heat sink 55.
The Light source 51 is configured by a semiconductor Light source such as an LED (Light Emitting Diode) or an LD (Laser Diode). The light source 51 is mounted on the substrate 52. The substrate 52 is mounted on the lens holder 53. The light source 51 mounted on the substrate 52 is disposed to face the cavity 45 of the lens member 1.
The lens holder 53 is attached to the heat sink 55. A substrate support table 57 and a mount table 56 are mounted on the lens holder 53. The lens holder 53 is a substantially plate-shaped member. A substrate support table 57 and a mount table 56 are mounted on one surface of the lens holder 53. A heat sink 55 is attached to the other surface of the lens holder 53.
As shown in fig. 5, the lens member 1 has a pair of straight portions 16 and an arc portion 17 connecting the pair of straight portions 16. When the lens member 1 is viewed from the front, the pair of linear portions 16 are disposed so as to face each other across the axis Ax at the outer edge of the annular flat portion 14. The linear portion 16 is formed as the outer edge of the annular flat portion 14 in the minor axis direction (the vertical direction in fig. 5) of the elliptical central convex portion 12. The circular arc portion 17 is formed as the outer edge of the annular flat portion 14 in the major axis direction (the left-right direction in fig. 5) of the elliptical central convex portion 12. When the lens member 1 is viewed from the front, the lens member 1 is formed in a rounded rectangular shape.
The lens component 1 shown in fig. 5 has a mounting portion 18. The mount portion 18 is a portion for mounting the lens member 1 to the lens holder 53. The mounting portion 18 extends from the straight portion 16 in a direction away from the axis Ax when the lens member 1 is viewed from the front. The mounting portion 18 is an L-shaped portion. The mounting portion 18 extends from the linear portion 16 toward the lens holder 53, and extends in a direction away from the axis Ax at the extended tip. The lens holder 53 is attached to the mounting portion 18. In the illustrated example, the lens member 1 is mounted to the lens holder 53 by screwing screws 54 inserted into screw holes 19 (see fig. 4) of the mounting portion 18 into mounting stands 56 of the lens holder 53.
In addition, the vehicular lamp is required to have a design in appearance, and the elongated lens member extending in the left-right direction is preferable because it gives a clear impression to a viewer when viewed from the front. On the other hand, the lens member 1 used in the vehicle lamp is required to have a property of widely radiating light in the longitudinal direction of the central convex portion 12.
When the light source module 50 of the present embodiment is viewed from the front, the linear portions 16 are provided at the upper and lower portions, and thus it is easy to design a vehicle lamp with good appearance. Further, a linear portion 16 designed to cut a part of the annular flat portion 14 is provided at an end portion in the minor axis direction of the elliptical central convex portion 12. Therefore, the annular flat portion 14 is easily formed to be large in the longitudinal direction, and light is easily irradiated widely in the longitudinal direction.
In addition, when the mount portion 18 is mounted to the lens member 1, light incident on the mount portion 18 cannot be efficiently emitted forward. However, in the lens component 1 of the present embodiment, the mount portions 18 are provided at the upper and lower portions when the lens component 1 is viewed from the front. As described above, the lens member 1 is required to have a wide irradiation range in the left-right direction, but is not required to have a wide irradiation range in the up-down direction. Therefore, even if the light incident on the mounting portions 18 provided at the upper and lower portions cannot be irradiated forward, it is difficult to greatly affect the light distribution pattern formed by the vehicle lamp, and the light source module 50 of the present embodiment is suitable for the vehicle lamp.
Next, a modified example of the light source module will be described.
Fig. 6 is a perspective view of a light source module 60 according to a modification. As shown in fig. 6, the light source module 60 includes the light source module 50 described above, and further includes an optical sensor 61.
The photosensor 61 is mounted in the vicinity of the straight portion 16, the straight portion 16 being formed to have the outer edge of the annular flat portion 14 in the front surface 10 of the lens member 1 of a rounded rectangular shape. The optical sensor 61 is a sensor capable of detecting light of a specific wavelength from among the light of the light source 51 emitted from the linear portion 16 to the outside of the lens member 1. The light source 51 includes a light emitting portion (light emitting chip) and a phosphor provided so as to cover the light emitting chip.
According to the light source module 60 of the above-described modification, for example, when the phosphor covering the light emitting chip of the light source 51 is dropped, the light (for example, ultraviolet rays) directly emitted from the light emitting chip can be detected by the optical sensor 61. Therefore, when undesired light such as ultraviolet light is detected as the light emitted from the lens member 1, such light can be prevented from leaking from the lens member 1 to the outside by turning off the light emission of the light source 51.
In the lens member 1 shown in fig. 6, the mount portion 18 is provided to the circular arc portion 17.
The present invention is not limited to the above-described embodiments, and may be appropriately modified, or improved. In addition, if the present invention can be achieved, the material, shape, size, numerical value, mode, number, arrangement place, and the like of each component in the above-described embodiment are arbitrary and are not limited.
The present application is based on japanese patent application (patent application 2019-186786) filed on 10.10.2019, the contents of which are incorporated herein by reference.
Industrial applicability
According to the present invention, a lens member and a light source module suitable for a vehicle lamp can be provided.

Claims (7)

1. A lens member for a vehicle lamp for emitting light in a forward direction,
the lens member has:
a front surface facing forward;
an outer side surface curved and extending from a rear side toward the front surface;
a rear convex surface which is provided at a position recessed forward from the outer side surface in a region where an axis passing through the light source and being parallel to the direction of the emitted light passes, and which is convex rearward; and
an inner side surface connecting a rear end portion of the outer side surface and the rear convex surface,
a cavity opened at the rear is formed by the rear convex surface and the inner side surface,
the front surface has a central convex portion which is provided in a region where the axis passes and has a convex shape forward, and an annular flat portion which is provided continuously from an outer edge of the central convex portion, extends flatly in a direction orthogonal to the axis, and is provided annularly at an outer edge of the central convex portion,
the rear convex surface is set to be in the following shape: guiding light emitted from a light source disposed in the cavity and incident on the rear convex surface to the central convex portion,
the central convex part is provided with the following shapes: the light incident on the central convex part is emitted forward as parallel light,
the outer side surface is designed to be in a shape of performing total reflection as follows: guiding light emitted from the light source and incident on the inner side surface to the front surface other than the central convex portion as parallel light,
the entire area of the front surface emits light.
2. The lens component according to claim 1,
the central protrusion has an elliptical shape when the lens member is viewed from the front.
3. The lens component according to claim 1,
a diffusion portion composed of a plurality of grooves is provided on the front surface.
4. The lens component according to claim 1,
the central convex portion is elliptical when the lens member is viewed from the front,
a diffusion portion composed of a plurality of grooves is provided on the front surface,
the diffusing portion is provided at an end of the front surface with respect to a major axis direction of the elliptical central convex portion.
5. A light source module, wherein,
the light source module has:
a lens component that is the lens component as claimed in any one of claims 1 to 4; and
a semiconductor light source disposed in the cavity of the lens member.
6. The light source module of claim 5,
the lens component is mounted to a lens holder,
when the lens member is viewed from the front, the outer edge of the annular flat portion is a rounded rectangle having a pair of straight portions facing each other with the axis therebetween and an arc portion connecting the straight portions,
the lens member is provided with a mount portion extending from the straight portion in a direction away from the axis when the lens member is viewed from the front,
the lens holder is attached to the attachment portion.
7. The light source module of claim 5,
when the lens member is viewed from the front, the outer edge of the annular flat portion is a rounded rectangle having a pair of straight portions facing each other with the axis therebetween and an arc portion connecting the straight portions,
an optical sensor is provided in the linear portion, the optical sensor detecting light leaking from the linear portion to the outside,
the light sensor detects light emitted when the fluorescent material of the semiconductor light source falls off.
CN202080068664.5A 2019-10-10 2020-10-05 Lens member and light source module Pending CN114450518A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019186786 2019-10-10
JP2019-186786 2019-10-10
PCT/JP2020/037763 WO2021070789A1 (en) 2019-10-10 2020-10-05 Lens component and light source module

Publications (1)

Publication Number Publication Date
CN114450518A true CN114450518A (en) 2022-05-06

Family

ID=75436825

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080068664.5A Pending CN114450518A (en) 2019-10-10 2020-10-05 Lens member and light source module

Country Status (3)

Country Link
JP (1) JPWO2021070789A1 (en)
CN (1) CN114450518A (en)
WO (1) WO2021070789A1 (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009087897A (en) * 2007-10-03 2009-04-23 Harison Toshiba Lighting Corp Optical part and vehicular lamp using the same
CN101779075A (en) * 2007-08-08 2010-07-14 斯坦雷电气株式会社 Projection lens for lighting equipment and lighting equipment using projection lens for lighting equipment
CN103672664A (en) * 2012-09-26 2014-03-26 中强光电股份有限公司 Lighting device for vehicle
CN105090854A (en) * 2014-05-08 2015-11-25 株式会社小糸制作所 Vehicle lamp
JP2016009065A (en) * 2014-06-24 2016-01-18 スタンレー電気株式会社 Lens body, lens coupling body and vehicle lighting fixture
CN105889836A (en) * 2015-02-12 2016-08-24 中强光电股份有限公司 Vehicle lamp module and lens
CN106104147A (en) * 2014-06-02 2016-11-09 飞利浦照明控股有限公司 Optical system for collimated light
CN106796006A (en) * 2014-07-23 2017-05-31 美泰克太平洋公司 Fog lamp lenses and sub-assembly
CN109642707A (en) * 2016-09-12 2019-04-16 麦克赛尔株式会社 Light supply apparatus
CN109661606A (en) * 2016-09-06 2019-04-19 麦克赛尔株式会社 Head-up display and its image display used
CN109937321A (en) * 2017-01-25 2019-06-25 麦克赛尔株式会社 Headlight arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4758753B2 (en) * 2005-12-20 2011-08-31 スタンレー電気株式会社 Vehicle headlamp
CN102818215A (en) * 2011-06-07 2012-12-12 富准精密工业(深圳)有限公司 Lens and lighting device
US10690311B2 (en) * 2017-01-27 2020-06-23 Maxell, Ltd. Headlight device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101779075A (en) * 2007-08-08 2010-07-14 斯坦雷电气株式会社 Projection lens for lighting equipment and lighting equipment using projection lens for lighting equipment
JP2009087897A (en) * 2007-10-03 2009-04-23 Harison Toshiba Lighting Corp Optical part and vehicular lamp using the same
CN103672664A (en) * 2012-09-26 2014-03-26 中强光电股份有限公司 Lighting device for vehicle
CN105090854A (en) * 2014-05-08 2015-11-25 株式会社小糸制作所 Vehicle lamp
CN106104147A (en) * 2014-06-02 2016-11-09 飞利浦照明控股有限公司 Optical system for collimated light
JP2016009065A (en) * 2014-06-24 2016-01-18 スタンレー電気株式会社 Lens body, lens coupling body and vehicle lighting fixture
CN106796006A (en) * 2014-07-23 2017-05-31 美泰克太平洋公司 Fog lamp lenses and sub-assembly
CN105889836A (en) * 2015-02-12 2016-08-24 中强光电股份有限公司 Vehicle lamp module and lens
CN109661606A (en) * 2016-09-06 2019-04-19 麦克赛尔株式会社 Head-up display and its image display used
CN109642707A (en) * 2016-09-12 2019-04-16 麦克赛尔株式会社 Light supply apparatus
CN109937321A (en) * 2017-01-25 2019-06-25 麦克赛尔株式会社 Headlight arrangement

Also Published As

Publication number Publication date
WO2021070789A1 (en) 2021-04-15
JPWO2021070789A1 (en) 2021-04-15

Similar Documents

Publication Publication Date Title
CN108474532B (en) Vehicle lamp and substrate
CN108351080B (en) Vehicle lamp
EP2461090B1 (en) Vehicle light
EP2487407B1 (en) Vehicle lighting device
JP4678364B2 (en) Light source device and vehicle headlamp
EP2246613A1 (en) Vehicle lamp
US8511874B2 (en) Vehicle lamp
EP2767750B1 (en) Vehicle headlight
CN110360525B (en) Vehicle lamp
US8109664B2 (en) Vehicle lighting equipment
US20090207610A1 (en) Combination rear lighting system
US11041600B2 (en) Light guide lens, lens coupling body and lighting tool for vehicle
EP3865766A1 (en) Light guide for vehicles, and lamp for vehicles
KR20180049632A (en) Light guide unit of vehicle
JP5874901B2 (en) Vehicle lamp unit
US8485704B2 (en) Lamp unit and vehicle lamp
CN108224352B (en) Lamp fitting
US10576871B2 (en) Vehicle lamp
JP5647499B2 (en) Vehicle lighting
CN112292562B (en) Lamp for vehicle
CN114450518A (en) Lens member and light source module
JP2020205147A (en) Light guide body and vehicular lighting fixture
JP2015146270A (en) Vehicular lighting fixture
JP6648428B2 (en) Vehicle lighting
KR102558734B1 (en) lamp for vehicle

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination