WO2021093563A1

WO2021093563A1 - Light source apparatus and illumination system

Info

Publication number: WO2021093563A1
Application number: PCT/CN2020/123803
Authority: WO
Inventors: 张权; 付锦江; 陈辉
Original assignee: 深圳市绎立锐光科技开发有限公司
Priority date: 2019-11-12
Filing date: 2020-10-27
Publication date: 2021-05-20
Also published as: CN211289937U

Abstract

A light source apparatus (10) and an illumination system including the light source apparatus (10). The light source apparatus (10) comprises a first light source module (100), wherein the first light source module (100) emits first light (A) having a wavelength within a first spectral range; a second light source module (200), wherein the second light source module (200) emits second light (B) having a wavelength within a second spectral range; a third light source module (300), wherein the third light source module (300) comprises a third light source for emitting third light, and a wavelength conversion apparatus, and the wavelength conversion apparatus comprises a fluorescent powder layer excited by the third light to emit light within a third spectral range; a fourth light source module (400), wherein the fourth light source module (400) emits fourth light (C); and a light guide system, wherein the light guide system comprises a first filter (700), the fourth light (C) is guided to the wavelength conversion apparatus by means of the first filter (700) and excites the wavelength conversion apparatus to emit light within the third spectral range, light within the third spectral range that is guided to the wavelength conversion apparatus by the fourth light source module (400) and that is excited, and light within the third spectral range that is emitted by the wavelength conversion apparatus excited by the third light are combined to form fifth light (D), and the light guide system guides the first light (A), the second light (B) and the fifth light (D) to a light-emitting channel. The light source apparatus (10) obtains high-brightness and good-color-quality illumination light by means of the dual excitation of the wavelength conversion apparatus.

Description

Light source device and lighting system

Technical field

The utility model relates to the field of lighting, in particular to a light source device and a lighting system.

Background technique

At present, most high-power multi-color LED lighting sources on the market use R+G+B three-color LED light source modules, but the luminous flux of multi-color LEDs is not high. In order to enhance the luminous flux, a blue LED is used to excite the green phosphor from one side to generate green light, and then combined with a red light module and a blue light module to travel a high luminous flux source.

Although this single-sided excitation wavelength conversion device can enhance the brightness of the light source to a certain extent, the phosphor is not fully utilized.

Therefore, it is necessary to provide a new light source device and lighting system to solve the above-mentioned problems.

Utility model content

The purpose of the utility model is to provide a light source device and lighting system with high brightness, good color quality, stable light output and compact structure.

In order to achieve the above objective, the present invention provides a light source device, including

A first light source module, the first light source module emitting a first light with a wavelength in a first spectral range;

A second light source module, which emits second light with a wavelength in a second spectral range;

A third light source module, the third light source module includes a third light source for emitting a third light and a wavelength conversion device, the wavelength conversion device includes a phosphor layer that is excited by the third light to emit light in a third spectral range ；

A fourth light source module, which emits fourth light;

In a light guide system, the light guide includes a first filter, the fourth light is guided to the wavelength conversion device through the first filter and excited to emit light in a third spectral range, the third light source The third spectral range light emitted by the module and the third spectral range photosynthetic light excited by the wavelength conversion device by the third light form a fifth light;

The light guiding system guides the first light, the second light, and the third light to the light exit channel.

In one embodiment, the first filter is a dichroic that reflects light in a first spectral range and light in a third spectral range.

In one embodiment, the light guiding system further includes a third filter, wherein the third filter is disposed on the light path of the exit light of the first light source module, and the third filter is reflective A dichroic plate that transmits light in the first spectral range and transmits light in the second spectral range and the third spectral range.

In one embodiment, the light guide system further includes a second filter, wherein the second filter is disposed on the light path of the second light source module, the second light source module and the The first light source module is arranged directly opposite, and the second filter is a dichroic plate that reflects light in the second spectral range and transmits light in the first spectral range and the third spectral range.

In one embodiment, the second light source module and the fourth light source module are arranged directly opposite to each other, the first filter is arranged between the second light source module and the fourth light source module, so The first filter simultaneously reflects light in the second spectral range.

In one embodiment, the first filter is a dichroic plate that transmits light in a first spectral range and emits light in a third spectral range.

In one embodiment, the light source device further includes a light homogenization device, and the light homogenization device is arranged on the light path of the light exit channel.

The utility model also provides a lighting system, including the above-mentioned light source device provided by the utility model.

Compared with the prior art, the fourth light in the light source device and the illumination system of the present invention is reflected to the wavelength conversion device through the third filter to realize the positive excitation of the wavelength conversion device, and is consistent with The third light rays excite the wavelength conversion device from the back and are combined together to form a composite light, and high brightness and good color quality illumination light can be obtained by dual excitation of the wavelength conversion device.

Description of the drawings

In order to make the content of the present utility model clearer, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, which are useful for those in the field. Ordinary technicians can obtain other drawings based on these drawings without creative work, among which:

Figure 1 is a schematic diagram of the light path of the light source device according to the first embodiment of the utility model;

Figure 2 is the overall structure diagram of the lighting system of the utility model;

Figure 3 is a top view of the lighting system of the utility model with the radiator and cover removed;

4 is a schematic diagram of the light path of the light source device according to the second embodiment of the utility model;

Fig. 5 is a schematic diagram of the light path of the light source device according to the third embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Examples. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

The utility model provides a light source device, including

A fourth light source module, which emits fourth light;

Example one

Please refer to FIG. 1. Embodiment 1 provides a light source device 10, which includes a first light source module 100, a second light source module 200, a third light source module 300, a fourth light source module 400, and a first filter The sheet 700, the second filter 600, the third filter 500, the light homogenizing device 800, and the light emitting lens 900 clearly show the direction of the light path emitted by each light source module. The light path direction of each light source is shown in the schematic diagram of FIG. 1 .

The third light source module 300 is arranged directly opposite to the light outlet of the light source device 10, and the first light source module 100 and the second light source module 200 are both located near the third light source module 300. One side of the light outlet of the light source device is respectively arranged on opposite sides of the optical axis, the fourth light source module 400 is located between the third light source module 300 and the first light source module 100, and The fourth light source module 400 and the third light source module 300 are located on the same side of the optical axis.

The third filter 500 and the second filter 600 are arranged crosswise, and the third filter 500 and the second filter 600 are both arranged on the first light source module 100 and the first light source module 100. The second light source modules 200 are arranged on the optical axis, the first filter 700 is arranged between the third light source module 300 and the second filter 600, and the first A filter 700 is located on the optical axis and is arranged directly opposite to the third light source module 300 and the fourth light source module 400, respectively.

The first light source module 100 emits a first light A with a wavelength in a first spectral range. In this embodiment, the light in the first spectral range is blue light, and the first light source module 100 includes a plurality of blue lights The LED light source and the first lens group correspondingly arranged on the blue LED light source, the first light is blue light, and the first lens group is used for collecting, distributing light and collimating the blue light.

The second light source module 200 emits a second light B with a wavelength in a second spectral range. In this embodiment, the light in the second spectral range is red light, and the second light source module 200 includes a plurality of A red LED light source and a second lens group correspondingly arranged on the red LED light source, the second light is red light, and the second lens group is used to collect, distribute and collimate the red light .

The third light source module 300 includes a plurality of blue LED light sources and a third lens group correspondingly arranged on the blue LED light source, the blue LED light source emits a third light, the third light is blue, and the third The lens group is used for receiving, distributing and collimating the blue light, and the third light source module is provided with a wavelength conversion device on the light path of the emitted light, and the wavelength conversion device includes a surface coated with green phosphor The fluorescence conversion layer, the blue LED light source irradiates the wavelength conversion device to excite the green phosphor in the fluorescence conversion layer to obtain green light.

The fourth light source module 400 emits a fourth light C having a wavelength in a fourth spectral range. In this embodiment, the light in the third spectral range is blue light, and the fourth light source module 400 includes a plurality of blue lights The LED light source and a fourth lens group correspondingly arranged on the blue LED light source, the fourth light is blue light, and the fourth lens group is used for collecting, distributing and collimating the blue light of the blue light. The blue light emitted by the fourth light source module is reflected by the first filter 700 and directed toward the wavelength conversion device in the third light source module 300 to excite the green phosphor in the wavelength conversion device to obtain green light.

It should be noted that in this embodiment, the fourth light source module is an LED light source. As a preferred embodiment, the fourth light source module 400 can also be a laser light source. The optical extension of the laser light source is Small, the conversion rate of the excitation wavelength conversion device is high, and the output light power of the green light can be further improved.

The third filter 500 is a blue-reflecting red-green filter for reflecting blue light and transmitting red and green light; the second filter 600 is a red-reflecting blue-green-red filter. , Used to reflect red light and transmit blue and green light; the first filter 700 is a blue light filter, used to reflect blue light, and transmit green light and red light.

The light source device 10 further includes a light homogenization device 800, which is disposed between the second filter 200 and the light outlet of the light source device 10, and is located on the optical axis. In this embodiment, the light homogenizing device 800 is a double fly-eye lens. It can be understood that the light homogenizing device is not limited to a double fly eye lens, and may also be a light homogenizing device such as a diffuser.

In this embodiment, for a light source that does not require high uniformity, the light homogenizing device 800 can also be replaced by a diffuser.

The first light A emitted by the first light source module 100 is collimated by the first lens group, reflected by the third filter 500, collected by the light homogenizing device 800, and homogenized, and then passed by the light emitting lens 900 converges the light to the light outlet for output; the second light source module 200 emits the second light B after being collimated by the second lens group and then reflected by the second filter 600 and then passed through the light homogenization device 800 The light is collected and homogenized, and then the light is condensed to the light outlet by the light emitting lens 900 for output; the blue LED light source in the third light source module 300 emits the third light to excite the wavelength conversion device to emit green light, And the fourth light C is collimated by the fourth lens group and reflected by the first filter 700 to the wavelength conversion device to excite the wavelength conversion device to generate green light. The wavelength conversion device is The third light source and the fourth light source are co-excited to produce green light, that is, the fifth light D, which is combined with the first light A and the second light B after being transmitted through the first filter 700 The light emitted from the combined light is collected and homogenized by the homogenizing device 800, and then the light is condensed to the light outlet by the light emitting lens 900 for output.

In this embodiment, the fourth light C is reflected by the first filter 700 to the wavelength conversion device to realize the front excitation of the wavelength conversion device, and the fourth light C excites the wavelength conversion device from the back side with the third light. After the wavelength conversion device is combined together to form a composite green light, the wavelength conversion device is excited on both sides, thereby obtaining high-brightness light and good color quality.

Please refer to FIGS. 1 to 3 at the same time. The present invention also provides a lighting system 20, including a frame 1, the light source device 10 provided by the present invention installed in the frame, and a heat sink 3 fixed on the outside of the frame. .

The frame includes a first side plate 11 and a second side plate 12 that are located on the optical axis of the light source device 10 and are arranged oppositely, and simultaneously connect the first side plate 11 and the second side plate 12 and A third side plate 13, a fourth side plate 14, a fifth side plate 15 and a sixth side plate 16 are sequentially arranged around the optical axis; the outer side of the first side plate 11, the third side plate 13 and the fifth side plate 15 There are radiators 3 respectively.

In this embodiment, the first side plate 11, the third side plate 13 and the fifth side plate 15 are respectively provided with a heat sink 3 for heat dissipation, so that the optical effect of the light source device 10 is more stable.

The third light source module 300 is fixed on the inner side of the first side plate 11, the light outlet of the light source device penetrates the second side plate 12, and the first light source module 100 and the fourth The light source modules 400 are respectively fixed on the inner side of the fifth side plate 15, and the second light source module 200 is fixed on the inner side of the third side plate 13. Opposite sides of the third filter 500, the second filter 600, and the first filter 700 are respectively fixed to the third side plate 13 and the fifth side plate 15 and are arranged obliquely. The third filter 500 and the second filter 600 are disposed crosswise, and the first filter 700 is disposed between the first side plate 11 and the second filter 600.

In this embodiment, the light outlet of the light source device penetrates the second side plate 12, and the first light source module 100 and the fourth light source module 400 are respectively fixed to the fifth side plate 15 The second light source module 200 is fixed on the inner side of the third side plate 13. Opposite sides of the third filter 500, the second filter 600, and the first filter 700 are respectively fixed to the third side plate 13 and the fifth side plate 15 and are arranged obliquely. The third filter 500 and the second filter 600 are arranged crosswise, and the first filter 700 is arranged between the first side plate 11 and the second filter 600, so that the light source device The structure of 10 is more compact.

Example two

As shown in FIG. 4, the second embodiment provides a light source device. The difference between the second embodiment and the first embodiment lies in the position where the light source module is installed, and the transparency of the filter due to the different installation position of the light source module It is also different. For the same components as in the first embodiment, no further description will be given here.

The light source device of the second embodiment includes a first light source module 102, a second light source module 202, a third light source module 302, a fourth light source module 402, a first filter 502, and a second filter 602. The first light source module 102 is used to emit blue light, the second light source module 202 is used to emit red light, and the third light source module 302 includes an excitation light source for emitting blue light and a wavelength conversion device. The wavelength conversion device includes The phosphor layer that emits green light is excited, and the fourth light source module 402 is used to emit blue light. In the second embodiment, the second light source module is arranged in a position directly opposite to the fourth light source module, so that a filter is passed through. It can realize the light splitting and combining of the emitted light, reducing the number of filters and reducing the cost. Since the second light source module is arranged in a position directly opposite to the fourth light source module, the second light source module and the third light source module The module and the third light source module have a compact space structure and can share a high-power heat dissipation system to increase the heat dissipation effect of the light source device.

The first filter 502 is a dichroic film that reflects red and blue light and transmits green light, and the second filter 602 is a dichroic film that reflects blue light and transmits red and green light. The blue light emitted by the first light source module 102 is reflected toward the light combining channel by the second filter 602, the red light emitted by the second light source module 202 is reflected toward the light combining channel by the first filter 502, and the fourth light source module The blue light emitted by 402 is reflected by the first filter 502 to the fluorescent layer of the third light source module 302, and the green light emitted by the wavelength conversion device is reflected back to the first filter 502, because the first filter 502 and the second filter 502 The filters 602 all transmit green light, so that the wavelength-converted green light passes through the transmission of the first filter 502 and the second filter 602 and is emitted toward the light exit channel.

Example three

As shown in FIG. 5, the third embodiment provides a light source device. The difference between the third embodiment and the first embodiment lies in the different positions of the light source modules, and the transmissivity of the filter due to the different positions of the light source modules. It is also different. For the same components as in the first embodiment, no further description will be given here.

The light source device of the third embodiment includes a first light source module 103, a second light source module 203, a third light source module 303, a fourth light source module 403, a first filter 703, a second filter 603, and a second light source module. Three filters 503. The first light source module 103 is used to emit blue light, the second light source module 203 is used to emit red light, and the third light source module 303 includes an excitation light source for emitting blue light and a wavelength conversion device. The wavelength conversion device includes The phosphor layer that emits green light is excited, and the fourth light source module 403 is used to emit blue light. In the third embodiment, the fourth light source module is arranged in a position directly opposite to the third light source module, so that the spatial structure of the entire light source device is More compact.

The third filter 503 is a dichroic plate that reflects red light and transmits green and blue light, and the second filter 603 is a dichroic plate that reflects blue light and transmits green and red light. The first filter 703 is a dichroic plate that transmits blue light and reflects green light. The blue light emitted by the first light source module 103 is reflected toward the light combining channel by the second filter 603, the red light emitted by the second light source module 203 is reflected toward the light combining channel by the third filter 503, and the fourth light source module The blue light emitted by 403 is transmitted to the fluorescent layer of the third light source module 303 through the first filter 703, and is reflected back to the first filter 703 by the green light of the wavelength conversion device. The light sheets 603 all transmit green light, so that the wavelength-converted green light passes through the transmission of the third filter 502 and the second filter 602 and is emitted toward the light exit channel.

Compared with the prior art, the light source device and the illumination system of the present invention realizes the positive excitation of the wavelength conversion device when the fourth light is reflected by the third filter to the wavelength conversion device, and is incompatible with The third light rays excite the wavelength conversion device from the back and then are combined into a composite light. Through dual excitation of the wavelength conversion device, high-brightness and good color quality illumination light is obtained; a radiator is provided on the outside of the frame for Heat dissipation makes the optical effect of the light source device more stable.

The above embodiments are only examples to clearly illustrate the utility model, and are not intended to limit the implementation; the scope of the utility model includes but is not limited to the above embodiments, and all equivalent changes made according to the shape and structure of the utility model include Within the protection scope of the utility model.

Claims

A light source device, characterized in that it comprises

A first light source module, the first light source module emitting a first light with a wavelength in a first spectral range;

A second light source module, which emits second light with a wavelength in a second spectral range;

A third light source module, the third light source module includes a third light source for emitting a third light and a wavelength conversion device, the wavelength conversion device includes a phosphor layer that is excited by the third light to emit light in a third spectral range ；

A fourth light source module, which emits fourth light;

In a light guide system, the light guide includes a first filter, the fourth light is guided to the wavelength conversion device through the first filter and excited to emit light in a third spectral range, the third light source The third spectral range light emitted by the module and the third spectral range photosynthetic light excited by the wavelength conversion device by the third light form a fifth light;

The light guiding system guides the first light, the second light, and the third light to the light exit channel.
4. The light source device of claim 1, wherein the first filter is a dichroic that reflects light in a first spectral range and light in a third spectral range.
The light source device according to claim 2, wherein the light guiding system further comprises a third filter, wherein the third filter is arranged on the light path of the first light source module, so The third filter is a dichroic plate that reflects light in the first spectral range and transmits light in the second spectral range and the third spectral range.
The light source device according to claim 3, wherein the light guiding system further comprises a second filter, wherein the second filter is disposed on the light path of the second light source module, so The second light source module and the first light source module are arranged directly opposite to each other, and the second filter is a dichroic that reflects light in the second spectral range and transmits light in the first and third spectral ranges .
The light source device according to claim 3, wherein the second light source module and the fourth light source module are arranged directly opposite to each other, and the first filter is arranged on the second light source module and the first light source module. Among the four light source modules, the first filter simultaneously reflects light in the second spectral range.
The light source device according to claim 1, wherein the first filter is a dichroic plate that transmits light in a first spectral range and emits light in a third spectral range.
The light source device according to claim 6, wherein the light guiding system further comprises a third filter, wherein the third filter is disposed on the light path of the first light source module, so The third filter is a dichroic plate that reflects light in the first spectral range and transmits light in the second spectral range and the third spectral range.
7. The light source device according to claim 7, wherein the light guiding system further comprises a second filter, wherein the second filter is arranged on the light path of the second light source module, so The second light source module and the first light source module are arranged directly opposite to each other, and the second filter is a dichroic that reflects light in the second spectral range and transmits light in the first and third spectral ranges .
The light source device according to claim 1, wherein the light source device further comprises a light homogenizing device, and the light homogenizing device is arranged on the light path of the light exit channel.
An illumination system, characterized by comprising the light source device according to any one of claims 1-9.