JP3217207B2 - Lens for vehicle lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel vehicle lamp lens. More specifically, a novel incandescent light source composed of an incandescent lamp and a reflecting mirror that converts the light of the incandescent lamp into a substantially parallel light beam and an LED light source having a large number of light emitting diodes can be selectively adopted as the light source unit. An object of the present invention is to provide a lens for a vehicle lamp.

[0002]

2. Description of the Related Art As a light source of a vehicular lamp, for example, a sign light for an automobile, an incandescent light source and a light emitting diode (hereinafter, referred to as "LED") are used. ").
A D light source is considered.

[0003] In a sign light for automobiles, the light distribution is standardized. For example, in the case of a tail lamp or a stop lamp, the light distribution is 10 ° vertically and 20 ° horizontally.
In the case of a stop lamp that is attached to the inside of a rear windshield or a rear spoiler called a so-called high-mount stop lamp, a diffusion angle of 10 ° upward, 5 ° downward, and 10 ° left and right is required. The light distribution is determined to require an angle.

[0004] The above-mentioned light distribution is obtained by controlling light from the light source unit by using a lens disposed in front of the light source unit.

[0005]

When an LED light source is used, the light emitted from each LED has directivity but has a slight tendency to diffuse. Therefore, it is necessary to perform control taking this into account. When an incandescent light source is used, it is necessary to control the parallel light beam to be directed in a predetermined direction.

An example of a lens for controlling the light of an LED light source is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 1-319201, which is shown in FIGS.

The lens 101 is formed by forming a step group 104 consisting of nine lens steps 103, 103,... Corresponding to one LED 102 for each LED.

[0008] Lens step 103cc located at the center
Of the LED 102 substantially coincides with the central axis of the corresponding LED 102,
Further, it is formed on a concave curved surface with an appropriate curvature (R1). Four lens steps 103uc, 103d located above, below, and to the left and right of the central lens step 103cc
c, 103cl, and 103cr have stepped portions 105 because their inner ends, that is, the side ends in contact with the central lens step 103cc are slightly protruded from the lens step 103cc, and have a stepped portion 105 from the inner end side to the outer end side. It is formed so as to be thin. Therefore, the left and right two lens steps 103cl and 103cr are substantially triangular in horizontal symmetry as shown in FIG. 13, and the upper and lower two lens steps 103uc and 103dc are substantially triangular in vertical cross section as shown in FIG. Has become. Also, these four lens steps 103uc, 103d
The surfaces of c, 103cl, and 103cr have appropriate curvatures (R
2) is formed in a concave curved surface.

The four corners, ie, the central lens step 1
03cc diagonally adjacent lens step 103u
1, 103ur, 103dl, and 103dr correspond to the lens steps 103uc, 103dc, 103cl,
The step 107 is formed by projecting so as to be one step higher than 3cr, and the surface 107 is directed toward the corner at a diagonal position, that is, the outer corner 109 from the inner corner 108 in contact with the central lens step 103cc. It is formed in a concave curved surface with an appropriate curvature so as to be inclined so as to be lower. Therefore, the thickness of these four lens steps 103ul, 103ur, 103dl, 103dr is maximum at the inner corner 108 and minimum at the outer corner 109, and is substantially triangular in both the vertical and horizontal sections. .

[0010] According to the configuration of the steps described above,
In the central lens step 103cc, the light in the center of the LED 102 having relatively high directivity is slightly diffused, and the light in the peripheral part, which has a slight tendency to diffuse compared to the light in the center, is slightly refracted toward the center. LED10 of 101
A predetermined range centered at 2 can be made to shine substantially uniformly so that there is no light spot over the entire lens.

When an incandescent light source is used as the light source section, it is necessary to control the parallel light flux reflected by the reflecting mirror to obtain a predetermined diffuse light distribution. By using a lens having a large number of fisheye lens steps, the parallel light beam is diffused right and left and up and down at a predetermined diffusion angle.

As described above, the tendency of the light to be controlled is different between the case where the LED light source is used as the light source unit and the case where the incandescent light source is used. There is a problem that the cost must not be reduced because each part must be prepared separately.

[0013] Therefore, there is a demand that a common lens can be used for the case where an LED light source is used as a light source unit and a case where an incandescent light source is used, without changing lenses.

[0014]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a lens of a vehicular lamp according to the present invention comprises an incandescent light source as a light source section and a reflecting mirror which converts the light of the incandescent lamp into a substantially parallel light flux. And a large number of light emitting diodes
A lens for a vehicle lamp that can selectively adopt an ED light source. A plurality of lens steps are provided corresponding to each light emitting diode to control direct light mainly in the central portion of the light emitting diode with high directivity. L for the purpose of doing
A substantially predetermined arrangement of an ED diffusion step, an LED correction step for refracting the direct light mainly at the periphery of the light emitting diode slightly toward the center, and an incandescent diffusion step for mainly controlling the parallel luminous flux of the incandescent light source. They are arranged in a pattern.

[0015]

Therefore, in the lens of the vehicle lamp according to the present invention, when the LED light source is used, a predetermined light distribution can be obtained mainly by the LED diffusion step and the LED correction step, and the incandescent light source can be obtained. Is used, the incandescent diffusion step mainly contributes to obtain a predetermined light distribution, so that only one type of lens according to the present invention can be used for both the LED light source and the incandescent light source, and the cost is reduced. Contribute to reduction.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the lens of the vehicle lamp according to the present invention will be described below with reference to the illustrated embodiments.

FIGS. 1 to 8 show an embodiment of a lens for a vehicle lamp according to the present invention.

First, an outline of a vehicle lamp to which the lens of the vehicle lamp of the present invention is applied will be described.

Reference numeral 1 denotes a vehicular lamp, for example, a high-mount stop lamp.

Reference numeral 2 denotes a lamp body, which is formed of a synthetic resin, has a horizontally long opening surface 3, and has a paraboloidal reflection surface 4
The reflector 4 having a is fixed inside.

A lamp mounting hole 6 is formed substantially at the center of the rear wall 5 of the lamp body 2, and an incandescent lamp 7 can be detachably mounted in the lamp mounting hole 6.
When the incandescent lamp 7 is attached, the incandescent lamp 7 and the reflector 4 constitute an incandescent light source. When the incandescent light source is not used as the light source, the bulb mounting hole 6 is closed by a closing member (not shown).

Reference numeral 8 denotes a horizontally long plate-shaped printed circuit board, and LEDs 9, 9,.
9 ', 9',... Are arranged and supported in a regular arrangement in a number of two rows vertically. Thus, an LED light source is configured. When an LED light source is used as the light source unit, the printed circuit board 8 is disposed in the lamp body 2,
LEDs 9, 9, ..., 9 ', 9' arranged there,
.. Face the opening surface 3 of the lamp body 2.

Reference numeral 10 denotes a lens formed of a transparent material, for example, a transparent synthetic resin such as polycarbonate or acrylic resin. The lens 10 is used for the lamp body 2 regardless of whether an LED light source or an incandescent light source is used as a light source. It is used so as to cover the opening surface 3.

The lens 10 has a large number of lens steps 11, 11,... On its inner surface, that is, the surface facing the light source section.
, 12, 12, ..., 13, 13, ... are formed. .., L on the upper side.
.. Are used to indicate lens steps formed corresponding to the ED 9, and reference numerals 12, 12,.
Are used to indicate the lens steps formed corresponding to.
.. And the lens steps formed between the step groups 12, 12,.

Nine lens steps 11, 11,... Are formed corresponding to the upper LED 9 in three rows and columns.

These lens steps 11, 11,...
Has a horizontal width of 3.5 mm, a vertical width of the three lower lens steps 11dc, 11dl, and 11dr has a vertical width of 1.75 mm, and the other lens steps have a vertical width of 3.5 mm. I have.

The central lens step 11cc is an LED diffusion step mainly for controlling the central part of the direct light from the LED 9, and its central axis is the LED.
9 is substantially coincident with the central axis, and has a concave curved surface with a radius of curvature in the horizontal direction of 8.5 mm and a radius of curvature in the vertical direction of 9.2 mm. This lens step 11cc is LED9
It has the function of slightly diffusing the light in the central part with relatively high directivity. Also, in this lens step 11cc, its reference plane is inclined upward by 3 ° 24 ′, that is,
LED is formed so that the lower end is thicker than the upper end.
It has the function of slightly refracting the light at the center of 9 downward.

The lens step 11ul located at the upper left and upper right positions of the center lens step 11cc.
And 11ur are LED correction steps mainly for controlling peripheral light out of direct light from the LED 9, and are concave curved surfaces having a horizontal curvature radius of 6.0 mm and a vertical curvature radius of 5.7 mm. Is doing. In these lens steps 11ul and 11ur, a substantially quarter area (shown by hatching in FIG. 4) near the center lens step 11cc functions as a step of correcting light around the LED 9. Is to refract light in the peripheral portion, which has a tendency to diffuse a little more than light in the central portion, slightly toward the center to prevent the peripheral portion of the LED 9 from becoming too dark. This is because, when the LED 9 is placed at the center and a rectangular lens area is set in front of the LED 9, the light of the LED 9 shows a circular spread, so that the four corners of the rectangle become extremely dark compared to other parts. In order to compensate for this, the rectangular area is illuminated almost uniformly.

The lens steps 11dl and 11dr located at the lower left and lower right positions of the center lens step 11cc are also LED correction steps mainly for controlling the peripheral light among the direct light from the LED 9.
A concave curved surface having a horizontal radius of curvature of 6.0 mm and a vertical radius of curvature of 6.3 mm (in the vertical direction, it is only half as large as other lens steps, and its lower edge is Therefore, when viewed in a vertical cross section, the upper end has a triangular shape with a thicker wall.) These lens steps 11dl and 11dr are approximately 2 cc near the center lens step 11cc.
A one-half region (shown by hatching in FIG. 4) is L
It functions as a correction step for light in the peripheral portion of the ED 9, and specifically, refracts light in the peripheral portion, which has a somewhat strong tendency to diffuse compared to light in the central portion, slightly toward the center, and the peripheral portion of the LED 9 becomes too dark. That is not to be.

The lens steps 11cl and 11cr located on the left and right of the central lens step 11cc are incandescent diffusion steps mainly for controlling the parallel light flux of the incandescent light source, and have a horizontal curvature radius of 6.0 mm and a vertical direction. Has a concave surface with a radius of curvature of 9.2 mm. These lens steps 11cl and 11cr are for diffusing the parallel light flux of the incandescent light source up and down and left and right, and approximately half the area near the center lens step 11cc (shown by hatching in FIG. 4). LED)
It also functions as a correction step for refracting light in the peripheral portion of the lens 9 slightly toward the center.

The lens step 11 uc located directly above the central lens step 11 cc is also an incandescent diffusion step mainly for controlling the parallel light flux of the incandescent light source.
It has a concave curved surface with a horizontal radius of curvature of 8.5 mm and a vertical radius of curvature of 5.7 mm. The lens step 11uc is also for diffusing the parallel light beam of the incandescent light source up and down and left and right, and a substantially half area near the center lens step 11cc (shown by hatching in FIG. 4). ) Also functions as a correction step of refracting light around the LED 9 slightly toward the center.

The lens step 11dc located immediately below the central lens step 11cc is also a diffusion step for incandescence mainly for controlling the parallel light beam of the incandescent light source.
A concave curved surface having a horizontal radius of curvature of 8.5 mm and a vertical radius of curvature of 6.3 mm (this lens step is also only half as large in the vertical direction as other lens steps, and its lower edge Ends at the deepest point.) The lens step 11dc is also for diffusing the parallel light flux of the incandescent light source up and down and left and right, but also functions as a correction step for refracting light around the LED 9 slightly toward the center.

Nine lens steps 12, 12,... Are formed in three rows and three rows corresponding to the lower LED 9 '.

These lens steps 12, 12,...
Has a horizontal width of 3.5 mm, and a vertical width of the upper three lens steps 12 uc, 12 ul, and 12 ur has a vertical width of 1.75 mm, and the others have a vertical width of 3.5 mm. .

The center lens step 12cc is an LED diffusion step mainly for controlling the light of the central part having high directivity out of the direct light from the LED 9 ', and the center axis thereof is the same as the center axis of the LED 9'. The radius of curvature in the horizontal direction is 8.5 mm and the radius of curvature in the vertical direction is 9.2
mm. This lens step 12c
c has a function of slightly diffusing light in the center of the LED 9 ', which has relatively high directivity. This lens step 12cc has its reference surface inclined downward by 3 ° 24 ', that is, formed so that the upper end is thicker than the lower end, and refracts light at the center of the LED 9' slightly upward. Plays the function of letting.

The lens step 12ul located at the upper left and upper right positions of the center lens step 12cc.
And 12ur are LED correction steps mainly for the purpose of controlling the peripheral light out of the direct light from the LED 9 ', and have concave portions having a horizontal curvature radius of 6.0 mm and a vertical curvature radius of 7.0 mm. It has a curved surface (in the vertical direction, it is only half as large as other lens steps, and its upper edge ends at the deepest point). These lens steps 12ul and 12ur
The approximately half area near the center lens step 12 cc (shown by hatching in FIG. 4) functions as a step for correcting the light around the LED 9 ′. Specifically,
The light in the peripheral portion, which has a tendency to be diffused somewhat more strongly than the light in the central portion, is slightly refracted toward the center so that the peripheral portion of the LED 9 'is not too dark. In addition, the reference surfaces of the lens steps 12ul and 12ur are also inclined downward by 3 ° 24 ′, and have the function of slightly refracting the light at the center of the LED 9 ′.

The lens steps 12dl and 12dr located at the lower left and lower right positions of the center lens step 12cc are also LED correction steps mainly for controlling the peripheral light out of the direct light from the LED 9 '. And a concave curved surface having a horizontal radius of curvature of 6.0 mm and a vertical radius of curvature of 6.3 mm. In these lens steps 12dl and 12dr, a substantially quarter area (shown by hatching in FIG. 4) near the center lens step 12cc functions as a step of correcting light around the LED 9 '. Specifically, the light in the peripheral portion, which has a slightly higher tendency to diffuse than the light in the central portion, is slightly refracted toward the center so that the peripheral portion of the LED 9 'is not too dark. Also, the lens steps 12dl and 12d
r also has its reference plane inclined down 3 ° 24 'forward,
It has the function of slightly refracting the light at the center of the LED 9 'upward.

The lens steps 12cl and 12cr located to the left and right of the central lens step 12cc are incandescent diffusion steps mainly for controlling the parallel luminous flux of the incandescent light source, and have a horizontal curvature radius of 6.0 mm and a vertical direction. Has a concave surface with a radius of curvature of 9.2 mm. These lens steps 12cl and 12cr are for diffusing the parallel light flux of the incandescent light source up and down and left and right, and approximately half the area near the center lens step 12cc (shown by hatching in FIG. 4). LED)
It also functions as a correction step for refracting the light at the periphery of 9 'slightly toward the center. This lens step 12
The reference planes cl and 12cr also have a reference surface inclined at 3 ° 24 ′ downward, and have a function of slightly refracting light at the center of the LED 9 ′.

The lens step 12 uc located directly above the central lens step 12 cc is also an incandescent diffusion step mainly for controlling the parallel light flux of the incandescent light source.
It has a concave curved surface with a radius of curvature in the horizontal direction of 8.5 mm and a radius of curvature in the vertical direction of 7.0 mm. The lens step 12uc also serves to diffuse the parallel luminous flux of the incandescent light source up and down and left and right, but also functions as a correction step for refracting light around the LED 9 'slightly toward the center.

The lens step 12dc located immediately below the center lens step 12cc is also a diffusion step for incandescence mainly for controlling the parallel light flux of the incandescent light source.
A concave curved surface having a horizontal radius of curvature of 8.5 mm and a vertical radius of curvature of 6.3 mm is formed. This lens step 12dc is also for diffusing the parallel light flux of the incandescent light source up and down and left and right.
An area approximately one-half of the cc (shaded in FIG. 4) also functions as a correction step for refracting light around the LED 9 'slightly toward the center. The reference plane of the lens step 12dc is also inclined downward by 3 ° 24 ′, and has a function of slightly refracting the light at the center of the LED 9 ′.

The lens steps 13, 13,... Arranged in a band in the horizontal direction between the upper step groups 11, 11,... And the lower step groups 12, 12,. This is an incandescent diffusion step for controlling the parallel light flux of the light source. These lens steps 13, 1
Have a width of 3.5 mm each in the vertical and horizontal directions.

The lens step 13c located between the lens steps 11dc and 12uc has a concave curved surface having a horizontal radius of curvature of 8.5 mm and a vertical radius of curvature of 2.6 mm. Then, this lens step 13c
Is for diffusing the parallel luminous flux of the incandescent light source up and down and left and right.

The lens steps 13l and 13r located to the left and right of the lens step 13c have a concave curved surface having a horizontal radius of curvature of 3.9 mm and a vertical radius of curvature of 3.4 mm. And these lens steps 131,
13r is also for diffusing the parallel light flux of the incandescent light source up and down and left and right.

In the lens 10 described above, the diffusion lens step and the correction lens step for the LED light source and the diffusion lens step for the incandescent light source are arranged in a predetermined arrangement pattern. The lens 10 can be used regardless of whether an LED light source or an incandescent light source is used, and it is not necessary to change the lens every time the light source unit changes, and the cost can be reduced by using common components. .

FIG. 9 is a front view showing another example of the arrangement pattern of the lens steps.

Also in this example, the lens 14 has one LED
Are formed in an array corresponding to. These lens steps 15, 1
5, the surface facing the light source is basically formed as a concave curved surface.

15 cc is an LED whose central axis is not shown.
Is a central lens step that coincides with the central axis of the LED, is a LED diffusion step for mainly controlling the direct light of the LED, and has a function of slightly diffusing light in the central part of the LED, which has a relatively high directivity.

The oblique direction of the center lens step 15 cc,
That is, a lens step 15ul located diagonally,
15ur, 15dl, and 15dr are LED correction steps for mainly controlling the direct light of the LED, and approximately one quarter of the region adjacent to the center lens step 15cc has a tendency to diffuse compared to the light at the center. It has a function as a correction step for refracting light in a certain peripheral portion slightly toward the center so that the peripheral portion is not darkened. Note that an approximately one-quarter area adjacent to the one-quarter area is adjacent to the next LE area.
D is an area that functions as a correction step.

The lens steps 15 uc, 15 dc, and 15 adjacent to the central lens step 15 cc vertically and horizontally.
cl and 15cr are incandescent diffusion steps for mainly controlling the parallel light flux of the incandescent light source, and have a function of diffusing the parallel light flux of the incandescent light source vertically and horizontally. Incidentally, these lens steps 15uc, 15dc, 15cl, 1
The approximately half area adjacent to the 5cr center lens step 15cc also functions as a correction step for refracting light at the periphery of the LED slightly toward the center.

FIG. 10 is a front view showing still another example of the arrangement pattern of the lens steps.

In this example, the lens 16 has one LED
25 lens steps 1 in 5 rows and 5 columns in total
7, 17,... Are arranged. In these lens steps 17, 17,..., The surface facing the light source is basically formed as a concave curved surface.

Center lens step 17C located at the center
Is a LED diffusion step for slightly diffusing the direct light of the central part of the LED (not shown) where the directivity is strong, and the central axis of the LED substantially coincides with the central axis of the LED.

A total of eight lenses including four lens steps adjacent to the center lens step 17C in a diagonal direction, that is, diagonally, and four lens steps disposed one above, below, right and left of the center lens step 17C. Steps 17L, 17L,... Are mainly direct light of LEDs,
In particular, this is a first LED correction step for diffusing the direct light intermediate between the direct light at the center and the direct light at the periphery while slightly refracting it toward the center.

Four lens steps 17L ', 1 disposed one in the diagonal direction of the center lens step 17C.
7L ',... Function as a correction step for refracting the direct light at the periphery of the LED slightly toward the center.
This is a D correction step. The refraction angles of the second LED correction steps 17L ', 17L',... Correspond to the first LED correction steps 17L, 17L,.
Is larger than the refraction angle of
This is provided in order to prevent the four corners of the rectangular area centered at the center from becoming too dark.

Four lens steps 17W, 17W,... Adjacent to the central lens step 17C in the vertical and horizontal directions.
Is an incandescent diffusion step for mainly diffusing the parallel light flux of the incandescent light source up and down and left and right.

The incandescent steps 17W, 17W,.
.. eight lens steps 17 diagonally adjacent to each other
W ′, 17W ′,... Are also incandescent diffusion steps for diffusing a parallel light beam of an incandescent light source vertically and horizontally.

Then, the above-described step groups, each of which includes 25 steps, are formed vertically and horizontally.

Further, a pattern in which the incandescent diffusion steps are arranged in a band shape as in the arrangement patterns shown in FIGS. 1 to 8 can be arranged vertically and horizontally. For example, FIG.
, 19, 19,... Formed on the lens 18
Are, for example, the nine lens steps 15, 1 shown in FIG.
, Or a group of 25 lens steps 17, 17,... Shown in FIG. 10, and these group of steps 19, 19,.
Step groups 20, 20 'for incandescent steps are arranged so as to extend vertically and horizontally in a band shape. Of course, it is also possible to provide a group of incandescent diffusion steps in a strip only in the vertical direction.

In the above-described embodiment, each lens step has a concave surface on the surface facing the light source. However, this may be a convex surface. A combination of a concave surface and a convex surface may be used.

[0060]

As is apparent from the above description, the lens of the vehicular lamp according to the present invention comprises an incandescent light source comprising an incandescent lamp as a light source and a reflecting mirror for converting the light of the incandescent lamp into a substantially parallel light flux. LE with many light emitting diodes arranged
A lens of a vehicular lamp that can selectively adopt a D light source, provided with a plurality of lens steps corresponding to each light emitting diode, and mainly controls direct light in the central portion of the light emitting diode with high directivity. LE aiming to do
A substantially predetermined arrangement of a diffusion step for D, an LED correction step for refracting the direct light mainly at the periphery of the light emitting diode slightly toward the center, and an incandescent diffusion step mainly for controlling the parallel light flux of the incandescent light source. It is characterized by being formed in an array by a pattern.

Therefore, in the lens of the vehicle lamp according to the present invention, when the LED light source is used, a predetermined light distribution can be obtained mainly by the LED diffusion step and the LED correction step, and the incandescent light source can be obtained. Is used, the incandescent diffusion step mainly contributes to obtain a predetermined light distribution, so that only one type of lens according to the present invention can be used for both the LED light source and the incandescent light source, and the cost is reduced. Contribute to reduction.

It should be noted that the shapes and structures of the respective parts shown in the above-described embodiments are merely examples of the embodiment for carrying out the present invention, and the technical scope of the present invention is thereby reduced. It should not be interpreted restrictively.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view schematically showing an example of a vehicular lamp to which the lens of the vehicular lamp of the present invention is applied in conjunction with FIG. 2 and FIG.

FIG. 2 is a horizontal sectional view showing a case where an LED light source is used for a light source unit.

FIG. 3 is a horizontal sectional view showing a case where an incandescent light source is used for the light source unit.

FIG. 4 is an enlarged front view of a lens.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 4;

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 4;

FIG. 8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is an enlarged front view of a lens showing a modification of the arrangement pattern of the lens steps.

FIG. 10 is an enlarged front view of a lens showing another modification of the arrangement pattern of the lens steps.

FIG. 11 is an enlarged front view of a lens showing still another modification of the arrangement pattern of the lens steps.

12 shows an example of a lens of a conventional vehicular lamp together with FIGS. 13 and 14, and FIG. 12 is a perspective view showing a main part.

FIG. 13 is a horizontal sectional view.

FIG. 14 is a vertical sectional view.

[Explanation of symbols]

Reference Signs List 1 vehicle lamp 4 reflector (reflector) 7 incandescent lamp 9, 9 'light emitting diode 10 vehicle lamp lens 11cc LED diffusion step 11ul, 11ur, 11dl, 11dr LED correction step 11uc, 11dc, 11cl, 11cr For incandescent Diffusion Step 12cc LED Diffusion Step 12ul, 12ur, 12dl, 12dr LED Correction Step 12uc, 12dc, 12cl, 12cr Incandescent Diffusion Step 13 Incandescent Diffusion Step 14 Vehicle Lamp Lens 15cc LED Diffusion Step 15ul, 15ur, 15dl , 15dr LED correction step 15uc, 15dc, 15cl, 15cr Incandescent diffusion step 16 Lens of vehicle lamp 17C LED diffusion step 17L First LED correction step (L ED correction step) 17L 'Second LED correction step (LED correction step) 17W First incandescent diffusion step (incandescent diffusion step) 17W' Second incandescent diffusion step (incandescent diffusion step)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-17203 (JP, A) JP-A-1-319201 (JP, A) Japanese Utility Model Sho 62-142112 (JP, U) Japanese Utility Model Sho 31- 65602 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F21S 8/10 F21W 101: 14 F21Y 113: 00

Claims (3)

(57) [Claims] 1. An incandescent light source comprising an incandescent lamp and a reflector for converting the light of the incandescent lamp into a substantially parallel light beam, and an LED light source comprising a large number of light emitting diodes can be selectively employed as a light source unit. A lens for a vehicle lamp, wherein a plurality of lens steps are provided corresponding to each light emitting diode, and a diffusion step for an LED mainly for controlling direct light in a central portion having high directivity of the light emitting diode and mainly The LED correction step for refracting the direct light at the periphery of the light emitting diode slightly toward the center and the incandescent diffusion step for mainly controlling the parallel luminous flux of the incandescent light source are arranged and formed in a substantially predetermined arrangement pattern. A lens for a vehicle lamp characterized by the following. 2. The lens according to claim 1, wherein the LED diffusion step and the LED correction step are formed at equal pitch intervals. 3. A center lens step facing the center of the light emitting diode is an LED diffusion step, and a lens step adjacent to the lens step in a diagonal direction is also an LED step.
3. The lens of the vehicle lamp according to claim 1, wherein the lens is a correction step.