TW201530057A - Optical structure for composite illumination - Google Patents

Abstract

The present invention provides an Optical structure for composite illumination, comprising: a lens; a first reflector located at the side of an optical axis of the lens, the first reflector form a first focal point and a second focal point at the optical axis; and a first light source located at the first focal point. The other side of the optical axis has a reflecting surface that corresponds with the lens, and a second reflector is oval and corresponds with the reflecting surface, the second reflector forms two focal points, one of focal points is a third focal point, another one is the same as the second focal point, and a second light source is located at the third focal point. The reflecting surface converges and reflects the light of the second light source to the lens. The present invention can converge light of the first and second light sources to the second focal point, and project onto upper and lower ends of the optical axis on the lens separately, and form high beam or low beam separately to increase light uniformity, saturation, light emission efficiency, and accuracy. By means of separating the first and second light sources, the present invention can reduce the overall temperature of thermal equilibrium, and thus to effectively maintain the first and the second light emission efficiency.

Description

Composite illumination optical structure

The invention provides a composite illumination optical structure, in particular to a person who passes through a first light source and a second light source to form a high beam and a low beam respectively.

According to the U.S. Patent No. 7,387,416, the "primary light source and the secondary light source illumination lamp" is mainly provided by setting the main light source and the secondary light source to a slightly elliptical primary mirror and secondary reflection. The position behind the back focus of the mirror, so that the light of the primary and secondary sources, after being reflected by the primary and secondary mirrors, will be closer to the front end of the optical axis; and in the case of the primary light source, such as No. 7,387,416 As shown in the third figure, most of the light will be directly from the front end of the front focus F, and the light will be emitted from the lower side of the optical axis Ax, and a small part of the light will be reflected by the reflective surface to the light above the optical axis Ax; In other words, it approximates the main light source, and most of the light is emitted from above the optical axis Ax, and a small portion of the light will be emitted from below the optical axis Ax.

However, in terms of the optical properties of the ellipse, the light will pass through the other focus after the elliptical reflection of the focus, and the main and secondary sources are placed on the main mirror and the secondary reflection by the seventh, 387, and 416. The position behind the back focus of the mirror, although the light can be closer to the optical axis, but the uniformity and saturation of the light will be insufficient due to the inability to concentrate the light, and also affect the accuracy of the light.

Furthermore, since the main light source and the secondary light source of the case No. 7,387,416 adopt LED (Light-Emitting Diode), only the electrical energy conversion efficiency of the LED is converted into light energy by 15 to 20%, and 80 Up to 85% is converted into heat, and the temperature rise of the LED will cause its luminous efficacy to decline. Among them, the degree of decline of yellow light is the most significant. If the yellow LED light is raised from 25 degrees Celsius to 100 degrees, the rate of decline is as high as 75%. This will greatly affect the luminous efficacy, stability and service life of the LED; therefore, if the LED's luminous efficiency is maintained, it will provide good heat dissipation efficiency to reduce the heat balance, and the case No. 7,387,416 sets the main light source and the secondary light source in the same Reflecting the lamp holder, the heat energy of the main light source and the secondary light source is not easily dissipated. Although the figure 8 shows that the reflection lamp holders of the main light source and the secondary light source can be separated, the main light source and the secondary light source are still located in the whole lamp. On the same side, the heat dissipation distance between the two is still quite insufficient, so the primary light source and the secondary light source will still be affected by the heat conduction and heat radiation of each other's thermal energy to reduce the luminous efficacy.

In view of this, our inventors are concentrating on further research on headlights with main and secondary light sources, and proceeding with research and development and improvement, with a better invention to solve the above problems, and after continuous trial and modification There is a present invention.

Therefore, the object of the present invention is to solve the conventional illumination lamp with primary light source and secondary light source, which has uniformity of light and unevenness of saturation, and the distance between the main light source and the secondary light source is insufficient, so that the overall heat balance is achieved. The temperature is too high, which in turn affects the lack of luminous efficacy.

In order to achieve the above object, the inventors provide a composite illumination optical structure comprising: a lens having a first mirror disposed on an optical axis side thereof, the first mirror having an elliptical arc shape The optical axis forms a first focus and a second focus, and a first light source is disposed at the first focus to converge the light of the first light source to the second focus and then project to the lens; The optical axis is obliquely disposed with a pair of mirrors corresponding to the lens, and the mirror is correspondingly provided with a second mirror, wherein the second mirror has an elliptical arc shape, and the second mirror forms two focal points, one of which is a third focus And the other is a common point with the second focus; the third focus is located on the same side of the lens, and the second focus is provided with a second light source, and the mirror converges the light of the second light source Projected to the lens after the second focus.

The composite illumination optical structure according to the above aspect, further comprising a light shielding plate disposed by the second focus along the optical axis toward the first focus direction to shield the first light source from being ineffective to be projected to the lens Light.

According to the composite illumination optical structure described above, the mirror is extended by the second focus.

According to the composite illumination optical structure described above, the mirror is extended by the visor.

According to the composite illumination optical structure described above, the first light source is disposed in a first lamp holder, the first lamp holder is disposed along the optical axis, and the second light source is disposed in a second a lamp holder, the second lamp holder being located on the same side of the lens.

According to the composite illumination optical structure described above, the light of the first light source converges to the second focus and is projected below the optical axis of the lens to form a low beam.

According to the composite illumination optical structure described above, the light of the second light source converges to the second focus and is projected to the lens to form a high beam.

According to the composite illumination optical structure described above, the first light source is a Light-Emitting Diode (LED), an Organic Light Emitting Dipole (OLED) or a Laser Beam.

According to the composite illumination optical structure described above, the second light source is a Light-Emitting Diode (LED), an Organic Light Emitting Dipole (OLED) or a Laser Beam.

It is obvious from the above description and setting that the present invention has the following several advantages and effects, which are detailed as follows:

1. The invention provides that the first light source is disposed at the first focus of the first mirror, and the second light source is disposed at the third focus of the second mirror, so that the light of the first light source and the second light source can be Reflected by the first mirror or the second mirror and the mirror respectively, and then converge to the second focus, and then respectively projected to the lens, so as to achieve the low beam by the first light source or the high beam by the second light source The effect, and can form a clear legal cut-off line, while improving the overall light uniformity, saturation and accuracy of the present invention.

2. The invention is provided by the visor to shield the invalid light that the first light source cannot project to the lens, and the accuracy of the light projection can be effectively improved.

3. The first light source of the present invention is disposed on a first lamp holder disposed along the optical axis, and the second light source is disposed on a second lamp holder on the same side of the lens, thereby extending the first light source and the second The distance between the light sources, thereby reducing the overall heat balance temperature of the present invention, can effectively prevent the first light source and the second light source from being affected by temperature and reducing the luminous efficiency.

The invention will be described in detail below with reference to the drawings.

Please refer to FIG. 1 and FIG. 2 first. The present invention is a composite illumination optical structure, which comprises:

a lens 1 is disposed on a side of its optical axis Ax, and a first mirror 2 is formed in an elliptical arc shape, so that the optical axis Ax forms a first focus FP ₁ and a second focus FP ₂ . and at the first focal point FP1 is provided with a first light source 21, a first light source 21 to the ₂ L ₁ converges to a second focal point FP of the projection lens 1; the first light source 21 is a light emitting diode ( Light-Emitting Diode (LED), organic light-emitting diode (OLED) or laser beam; the other side of the optical axis Ax is obliquely disposed by the optical axis Ax, and a pair of lens mirrors 3 are required. The mirror 3 Correspondingly, a second mirror 4 is disposed, the second mirror 4 is in an elliptical arc shape, and the second mirror 4 forms two focal points, one is a third focus FP ₃ and the other is the second The focal point FP ₂ is a common point; the third focus FP ₃ is located on the same side of the lens 1 , and a second light source 41 is disposed on the third focus FP ₃ , and the second light source 41 is a light emitting diode (Light- emitting diode, LED), organic light emitting diode (OLED) or laser light (Laser beam), the mirror 3 after the light L2 of the second line light source 41 converges at the second focal point FP ₂ 1 are emitted to the lens;

a visor 5 disposed by the second focus FP ₂ along the optical axis Ax toward the first focus FP ₁ to shield the invalid light that the first light source 21 cannot project to the lens 1; and the mirror 3 Provided by the second focus FP2 and the visor 5;

a first lamp holder 22 disposed along the optical axis Ax, and the first lamp holder 22 is provided with the first light source 21;

A second lamp holder 42 is located on the same side of the lens 1 , and the second lamp holder 42 is provided with the second light source 41 .

The state of the present invention in the case of a low beam lamp, as shown in FIG. 1 , since the optical property of the ellipse is emitted by a focus, after the ellipse is reflected, the light must pass through another focus, so the present invention will be A mirror 2 is disposed in an elliptical shape, and forms a first focus FP ₁ and a second focus FP ₂ of the first mirror 2 on the optical axis Ax of the lens 1, and the first light source 21 is disposed at the first focus FP ₁ , so that the light L ₁ passes through the first mirror 2 and will converge to the second focus FP ₂ , and since the second focus FP ₂ is located on the optical axis Ax, the light L reflected by the first mirror 2 ₁ , the light is projected to the lens 1 under the optical axis Ax to form a low beam state; and the light shielding plate 5 is disposed along the optical axis Ax toward the first focus FP ₁ by the second focus FP ₂ The light that does not interfere with the first light source 21 converges to the second focus FP ₂ , and part of the light is not surely converged by the second focus and is projected to the lens 1 due to the deviation of the volume of the first light source 21, so that the light is ineffective. The panel 5 shields the ineffective light to enhance the accuracy of the light of the present invention in the low beam.

As shown in FIG. 2, in the high beam state, the present invention is similar to the optical properties of the ellipse, and the second mirror 4 is arranged in an elliptical shape, and the second light source 41 is disposed on the second mirror. At the third focus FP ₃ of 4, the light L _{2 of} the second light source 41 is reflected by the second mirror 4, and is bound to converge to the second focus FP ₂ , and since the second focus FP ₂ is located at the optical axis Ax, therefore, the light L ₂ reflected by the second mirror 4 is projected to the lens 1 to emit light, thereby forming a state of the high beam; the mirror 3 is extended by the second focus FP ₂ to provide a second reflection After the light beam L _{2 of the} mirror 4 converges on the second focus FP ₂ , the light beam L ₂ is reflected toward the most favorable condensing angle of the lens 1 via the mirror 3 to enhance the overall luminous efficiency of the present invention; the mirror 3 It is extended by the visor 5, and the materials and manufacturing costs of the visor 5 and the mirror 3 can be saved.

In the heat balance temperature of the present invention, since the first light source 21 and the second light source 41 are light emitting diodes, the first light source 21 and the second light source 41 are prevented from being heated by each other to affect the light emitting efficiency. The seat 22 is disposed along the optical axis Ax and is located at one end of the lens 1 , and the second socket 42 is located on the same side of the lens 1 , thereby extending the distance between the first socket 22 and the second socket 42 . Further, the thermal energy generated by the light emission of the first light source 21 and the second light source 41 is reduced by the mutual influence of heat conduction or heat radiation, so that the luminous efficiency of the first light source 21 and the second light source 41 can be effectively maintained.

In summary, the technical means disclosed by the present invention can effectively solve the problems of the prior knowledge, achieve the intended purpose and efficacy, and are not found in the publication before publication, have not been publicly used, and have long-term progress, The inventions referred to in the Patent Law are correct, and the application is filed according to law, and the company is invited to give a detailed examination and grant a patent for invention.

The above is only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the invention and the contents of the invention are all It should remain within the scope of this invention.

1‧‧‧ lens
2‧‧‧First mirror
21‧‧‧First light source
22‧‧‧First lamp holder
3‧‧‧Mirror
4‧‧‧second mirror
41‧‧‧second light source
42‧‧‧Second lamp holder
5‧‧ ‧ visor
Ax‧‧‧ optical axis
FP ₁ ‧ ‧ first focus
FP ₂ ‧‧‧second focus
FP ₃ ‧‧‧ third focus
L ₁ , L ₂ ‧‧‧Light

[Fig. 1] is an optical path and structural formula of the present invention in a low beam state. [Fig. 2] is an optical path and structural intention of the present invention in a high beam state.

1‧‧‧ lens

2‧‧‧First mirror

21‧‧‧First light source

22‧‧‧First lamp holder

3‧‧‧Mirror

4‧‧‧second mirror

41‧‧‧second light source

42‧‧‧Second lamp holder

5‧‧ ‧ visor

Ax‧‧‧ optical axis

FP ₁ ‧ ‧ first focus

FP ₂ ‧‧‧second focus

FP ₃ ‧‧‧ third focus

L ₁ ‧‧‧Light

Claims (10)

A composite illumination optical structure comprising: a lens, a first mirror disposed on an optical axis side thereof, the first mirror being elliptical arc shaped to form a first focus and a second focus on the optical axis And a first light source is disposed at the first focus to converge the light of the first light source to the second focus and then project to the lens; the other side of the optical axis is inclined by the optical axis to set a pair of mirrors that should be lensed Correspondingly, the mirror is provided with a second mirror, the second mirror has an elliptical arc shape, and the second mirror forms two focal points, one is a third focus, and the other is the second focus The third focus is located on the same side of the lens, and a second light source is disposed at the third focus. The mirror is configured to converge the light of the second light source to the second focus and then project to the lens. The composite illumination optical structure of claim 1, further comprising a visor disposed by the second focus along the optical axis toward the first focus direction to shield the first light source from being projected Ineffective light to the lens. The composite illumination optical structure of claim 1, wherein the mirror is extended by the second focus. The composite illumination optical structure of claim 2, wherein the mirror is extended by the second focus. The composite illumination optical structure of claim 4, wherein the mirror is extended by the visor. The composite illumination optical structure according to any one of claims 1 to 5, wherein the first light source is disposed on a first lamp holder, and the first lamp holder is disposed along the optical axis. The second light source is disposed on a second lamp holder, and the second lamp holder is located on the same side of the lens. The composite illumination optical structure according to any one of claims 1 to 5, wherein the light of the first light source converges to the second focus and is projected below the optical axis of the lens to form a low beam. Lighter. The composite illumination optical structure according to any one of claims 1 to 5, wherein the light of the second light source converges to the second focus and is projected to the lens to form a high beam. The composite illumination optical structure according to any one of claims 1 to 5, wherein the first light source is a Light-Emitting Diode (LED), an organic light-emitting diode (OLED) Or Laser beam. The composite illumination optical structure according to any one of claims 1 to 5, wherein the second light source is a Light-Emitting Diode (LED), an organic light-emitting diode (OLED) Or Laser beam.