WO2021120716A1

WO2021120716A1 - Wavelength conversion apparatus, light-shadow processing device and light processing method

Info

Publication number: WO2021120716A1
Application number: PCT/CN2020/114364
Authority: WO
Inventors: 刘金根; 陈龙; 刘飞
Original assignee: 无锡视美乐激光显示科技有限公司
Priority date: 2019-12-16
Filing date: 2020-09-10
Publication date: 2021-06-24
Also published as: CN110908230A

Abstract

A wavelength conversion apparatus, a light-shadow processing device and a light processing method, relating to the technical field of light-shadow processing. The wavelength conversion apparatus comprises: a base (100), a light-conducting device (200) and a drive device (300), the base (100) being provided with a light-conducting portion (110) and a wavelength conversion portion (120), and the drive device (300) being in transmission connection with the base (100), so that the light-conducting portion (110) and the wavelength conversion portion (120) are alternately located in a preset light path of the light-conducting device (200). The emission of blue light is implemented in the wavelength conversion apparatus, so that uniform and healthy blue light can be obtained, thereby facilitating the simplification of an optical path structure.

Description

Wavelength conversion device, light and shadow processing equipment and light processing method

Cross-references to related applications

This disclosure claims the priority of a Chinese patent application filed with the Chinese Patent Office on December 16, 2019, with the application number CN201911306039.5 and titled "wavelength conversion device, light and shadow processing equipment and light processing method", the entire content of which is incorporated by reference Incorporated in this disclosure.

Technical field

The present disclosure relates to the field of light and shadow processing technology, and in particular to a wavelength conversion device, light and shadow processing equipment, and light processing method.

Background technique

The wavelength conversion device is usually configured to convert the excitation light into the received laser light. When the wavelength conversion device is applied to the projector, if the blue light path compensation wavelength conversion device is added separately, the structure of the projector will increase and the weight of the projector will increase. Large; if a wavelength conversion material is used to convert short-wave excitation light to obtain blue light, the blue light efficiency is low. It can be seen that how to realize blue light emission in the wavelength conversion device has become a technical problem to be solved urgently.

Summary of the invention

The purpose of the present disclosure is to provide a wavelength conversion device, light and shadow processing equipment, and light processing method, which can realize blue light emission in the wavelength conversion device.

Optionally, in the first aspect, the wavelength conversion device provided by the embodiments of the present disclosure includes: a base, a light-conducting device, and a driving device; the base is provided with a light-conducting part and a wavelength conversion part; The base body is such that the light-conducting part and the wavelength conversion part are alternately located in the preset light path of the light-conducting device.

Optionally, in conjunction with the first aspect, the embodiments of the present disclosure provide the first possible implementation manner of the first aspect, wherein the base body is surrounded to form a receiving area; along the circumference of the receiving area, the The base body is provided with the light conducting part and the wavelength conversion part in sequence; the driving device is configured to drive the base body to rotate around the axis of the base body and then around the light conducting device.

Optionally, in conjunction with the first aspect, the embodiments of the present disclosure provide a second possible implementation manner of the first aspect, wherein the light conducting device includes a light reflecting device; the light reflecting device is configured to: When the light conducting part is arranged in the predetermined light path, the light that enters the light reflecting device through the light conducting part is reflected, and is emitted through the light conducting part.

Optionally, in combination with the second possible implementation manner of the first aspect, the implementation manners of the present disclosure provide a third possible implementation manner of the first aspect, wherein the light-conducting part includes a light-transmitting gap; The light that enters the light reflecting device by the light-transmitting gap is reflected by the light-reflecting device and is emitted through the light-transmitting gap.

Optionally, in combination with the third possible implementation manner of the first aspect, the implementation manners of the present disclosure provide the fourth possible implementation manner of the first aspect, wherein the base body rotates to make the light-transmitting notch And the wavelength conversion part are alternately located in the preset light path; relative to the rotation axis of the base, the center angle corresponding to the light-transmitting gap is less than 90 degrees.

Optionally, in combination with the fourth possible implementation manner of the first aspect, the implementation manners of the present disclosure provide the fifth possible implementation manner of the first aspect, wherein the light-conducting part is provided in the preset In the state in the light path, the light-conducting device is located between the rotation axis of the base and the light-transmitting gap.

Optionally, in combination with the first possible implementation manner of the first aspect, the implementation manners of the present disclosure provide the sixth possible implementation manner of the first aspect, wherein the light conducting device includes an optical integrator rod.

Optionally, in combination with the sixth possible implementation manner of the first aspect, the implementation manners of the present disclosure provide the seventh possible implementation manner of the first aspect, wherein the cross section of the receiving area is circular, so The integrator rod extends along any diameter of the containing area.

Optionally, in combination with the sixth possible implementation manner of the first aspect, the implementation manners of the present disclosure provide the eighth possible implementation manner of the first aspect, wherein, along the extension direction of the optical integrator rod, the The end faces at both ends of the integrator rod are parallel to the rotation axis of the base body.

Optionally, in combination with the sixth possible implementation manner of the first aspect, the implementation manners of the present disclosure provide the ninth possible implementation manner of the first aspect, wherein the light conducting portion includes: a first light-transmitting port And a second light-transmitting port; along the circumferential direction of the containing area, the first light-transmitting port and the second light-transmitting port are arranged on the base at intervals; and the light-conducting portion is provided in the pre- When the light path is in the state, the rod integrator extends from the first light transmission port to the second light transmission port.

Optionally, in combination with the ninth possible implementation manner of the first aspect, the implementation manners of the present disclosure provide the tenth possible implementation manner of the first aspect, wherein the opening area of the first light transmission port is larger than that of the first aspect. The port area of the light integrator rod; the opening area of the second light transmission port is larger than the port area of the light integrator rod.

Optionally, in combination with the ninth possible implementation manner of the first aspect, the implementation manners of the present disclosure provide the eleventh possible implementation manner of the first aspect, wherein the first light transmission port and the second The two light transmission ports are symmetrical with respect to the center of the rotation axis of the base; the wavelength conversion portion includes an even-numbered wavelength conversion area, and a part of the wavelength conversion area and another part of the wavelength conversion area are relative to the first light transmission port. The line connecting with the center of the second light-transmitting port is symmetrical.

Optionally, in combination with the first aspect, the embodiments of the present disclosure provide a twelfth possible implementation manner of the first aspect, wherein the wavelength conversion device further includes a blue wavelength conversion element, and the blue wavelength conversion element is configured to In the preset light path of the light-conducting device, it is configured to convert the excitation light into a received laser light containing long-wave blue light.

Optionally, according to an embodiment of the present disclosure, the wavelength conversion section includes: a first conversion area, a second conversion area, a third conversion area, and a fourth conversion area, wherein the third conversion area, the second conversion area A light transmission port, the second conversion area, the first conversion area, the second light transmission port, and the fourth conversion area are sequentially arranged along the substrate, the first conversion area and the first conversion area The three conversion areas are all configured as green light wavelength conversion areas, and the second conversion area and the fourth conversion area are both configured as red light wavelength conversion areas.

Optionally, according to an embodiment of the present disclosure, the wavelength conversion portion includes: a first conversion area, a second conversion area, a third conversion area, a fourth conversion area, a fifth conversion area, and a sixth conversion area, wherein, The first light transmission port, the sixth conversion area, the fifth conversion area, the fourth conversion area, the second light transmission port, the third conversion area, and the second conversion area And the first conversion area are sequentially arranged along the substrate, the third conversion area and the sixth conversion area are both configured as red wavelength conversion areas, and the second conversion area and the fifth conversion area are both configured as red wavelength conversion areas. It is configured as a yellow light wavelength conversion area, and the fourth conversion area and the first conversion area are both configured as a green light wavelength conversion area.

Optionally, with reference to the first aspect, the embodiments of the present disclosure provide a thirteenth possible implementation manner of the first aspect, wherein the wavelength conversion device further includes a polarization conversion element, and the polarization conversion element is disposed in the In the preset light path of the light-conducting device, it is configured to convert the polarization state of the excitation light reflected by the light-reflecting device.

Optionally, in a second aspect, the light and shadow processing equipment provided by the embodiments of the present disclosure includes: an excitation light source and the wavelength conversion device provided in the first aspect, the light conducting device is fixed in position relative to the excitation light source; In a state where the light conducting part is arranged in the preset light path, the excitation light emitted by the excitation light source is incident on the light conducting device along the preset light path.

Optionally, in conjunction with the second aspect, the embodiments of the present disclosure provide the first possible implementation manner of the second aspect, wherein the light and shadow processing equipment further includes: a dichroic element and a light finishing component; the light finishing The component is configured to process the blue light and/or the received laser light emitted by the wavelength conversion device and make it enter the dichroic element; the blue light and the received laser light are combined and emitted through the dichroic element.

Optionally, according to an embodiment of the present disclosure, the light finishing component includes a polarization converter and a first lens.

Optionally, according to an embodiment of the present disclosure, the excitation light source includes: a light source device, a second lens, a third lens, and a homogenizing device, wherein the light source device, the second lens, and the third lens And the homogenizing device are arranged in sequence.

Optionally, according to an embodiment of the present disclosure, the wavelength conversion device further includes a compensation light source (700). Optionally, in a third aspect, the light processing method provided by the embodiments of the present disclosure includes: shooting the excitation light to the wavelength conversion device along a preset light path of the light conducting device; driving the base to rotate or move relative to the light conducting device, and The light conducting part and the wavelength converting part are alternately located in the preset light path.

The embodiments of the present disclosure bring the following beneficial effects: the base body is provided with a light-conducting part and a wavelength conversion part, and the driving device is connected to the base by transmission, so that the light-conducting part and the wavelength conversion part are alternately located on the preset light path of the light-conducting device Among them, when the wavelength conversion device provided in the present disclosure is applied to blue light excitation, there is no need to add a laser for blue light compensation, which can solve the technical problem of lack of blue light in the wavelength conversion device, and is beneficial to simplify the optical path structure.

In order to make the above objectives, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with accompanying drawings are described in detail as follows.

Description of the drawings

In order to more clearly explain the technical solutions in the specific embodiments of the present disclosure or related technologies, the following will briefly introduce the drawings that need to be used in the specific embodiments or related technical descriptions. Obviously, the drawings in the following description are For some of the embodiments of the present disclosure, for those of ordinary skill in the art, other drawings may be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of a first wavelength conversion device provided by an embodiment of the disclosure;

2 is a schematic diagram of the substrate and the light conducting device of the first wavelength conversion device provided by the embodiments of the disclosure;

3 is a cross-sectional view of a second wavelength conversion device provided by an embodiment of the disclosure;

4 is a schematic diagram of the base body and the light conducting device of the second wavelength conversion device provided by the embodiments of the disclosure;

5 is a cross-sectional view of the base body and the light conducting device of the second wavelength conversion device provided by the embodiments of the disclosure;

FIG. 6 is a first expanded schematic diagram of the substrate of the wavelength conversion device provided by the embodiment of the disclosure;

FIG. 7 is the second expanded schematic diagram of the substrate of the wavelength conversion device provided by the embodiment of the disclosure;

FIG. 8 is a schematic diagram of a light and shadow processing device provided by an embodiment of the disclosure.

Icon: 100-substrate; 101-accommodating area; 110-light-conducting part; 111-first light-transmitting port; 112-second light-transmitting port; 120-wavelength conversion part; 121-first conversion area; 122-second Conversion zone; 123-third conversion zone; 124-fourth conversion zone; 125-fifth conversion zone; 126-sixth conversion zone; 200-light-conducting device; 300-drive device; 400-excitation light source; 410-light source Device; 420-second lens; 430-third lens; 440- homogenization device; 500-dichroic element; 600-light finishing component; 610-polarization converter; 620-first lens; 700-compensation light source.

Detailed ways

The technical solutions of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be construed as a limitation of the present disclosure. In addition, the terms "first", "second" and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. The physical quantity in the formula, if not separately labeled, should be understood as the basic quantity of the basic unit of the International System of Units, or the derived quantity derived from the basic quantity through mathematical operations such as multiplication, division, differentiation, or integration.

In the description of the present disclosure, it should be noted that, unless otherwise clearly defined and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, they may be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present disclosure can be understood in specific situations.

This embodiment is described in terms of excitation and conduction of blue light. In fact, the present disclosure is applicable to the excitation and conduction of light in any wavelength range.

As shown in FIGS. 1, 3, and 5, the wavelength conversion device provided by the embodiments of the present disclosure may include: a base 100, a light conducting device 200, and a driving device 300; the base 100 may be provided with a light conducting part 110 and a wavelength conversion Part 120; The driving device 300 is in transmission connection with the base 100, so that the light-conducting part 110 and the wavelength conversion part 120 are alternately located in the preset light path of the light-conducting device 200.

Specifically, the light-conducting device 200 may include a light integrator rod or a light-reflecting device. When the excitation light enters the light-conducting device 200 through the light-conducting part 110, the blue light is emitted through the light-conducting device 200; when the excitation light is incident along the preset light path In the case of the wavelength conversion unit 120, the wavelength conversion unit 120 can convert the excitation light into the received laser light and emit the received laser light.

In some embodiments of the present disclosure, the driving device 300 may adopt an air cylinder. The air cylinder drives the base 100 to reciprocate in a direction perpendicular to the preset light path. The light conducting part 110 and the wavelength conversion part 120 may be arranged in sequence along the moving direction of the base 100. Thereby, the light conducting part 110 and the wavelength conversion part 120 can be alternately located in the preset light path.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in this embodiment, the base 100 can be surrounded to form a receiving area 101; along the circumferential direction of the receiving area 101, the base 100 can be sequentially provided with a light conducting portion 110 and The wavelength conversion part 120; the driving device 300 can be configured to drive the base 100 to rotate around the axis of the base itself and then around the light conducting device 200. The driving device 300 may include an electric motor, the stator of the electric motor may be connected to the frame, and the rotor of the electric motor may be connected to the base body 100. The driving device 300 drives the base 100 to rotate around the axis of the containing area 101, so that the light conducting portion 110 and the wavelength conversion portion 120 can sequentially pass through the preset light path of the light conducting device 200. Adopt the form in which the base 100 surrounds the receiving area 101 and the cross section of the receiving area 101 is substantially circular. By driving the base 100 to rotate around the axis of the base itself, the switching light conducting portion 110 and the wavelength converting portion 120 are alternately located in the preset position. Compared with the way of driving the base 100 to move back and forth in the optical path, the base 100 surrounding the receiving area 101 can have a larger size, better heat dissipation performance, and higher conversion efficiency.

Further, the light-conducting device 200 can be connected to the frame or the stator of the motor, and the excitation light is injected into the wavelength conversion device along the preset light path of the light-conducting device 200. During the alternate switching process of the light-conducting part 110 and the wavelength conversion part 120, the light-conducting The position of the device 200 is fixed relative to the incident light, so that the light output deviation or the loss of blue light caused by the deflection of the light conducting device 200 can be avoided.

As shown in FIGS. 1 and 2, the light-conducting device 200 may include a light-reflecting device; the light-reflecting device may be configured to: in a state where the light-conducting part 110 is arranged in a preset light path, the light is incident through the light-conducting part 110 The light from the reflective device is reflected and emitted through the light conducting part 110. Among them, the light reflection device can be a blue reflector; or, the light reflection device is formed by roughening the surface of the substrate, coating a reflective coating or coating, etc., so that the light reflection device has a higher diffuse reflectance.

Specifically, when the light-conducting part 110 is located in the preset light path, the blue light is emitted through the light-conducting part 110 after being specularly reflected, diffusely reflected or scattered by the light reflecting device; when the wavelength conversion part 120 is located in the preset light path, the wavelength conversion part 120 The excitation light is converted into received laser light, and is reflected by the diffuse reflection layer on the surface of the wavelength conversion portion 120. In the process of switching the light conducting part 110 and the wavelength conversion part 120 to be alternately located in the preset light path, the blue light and the received laser light are emitted from the wavelength conversion device in turn, without the need to convert short-wave excitation light to obtain blue light, and it is convenient to guide the combination of blue and received laser light. .

Further, the wavelength conversion device may further include a blue light wavelength conversion element, which may be arranged in a predetermined light path of the light conducting device 200 and configured to convert the excitation light into a received laser light containing long-wave blue light.

Further, the wavelength conversion device may further include a polarization conversion element. The polarization conversion element may be arranged in the preset light path of the light transmission device 200 and configured to convert the polarization state of the excitation light reflected by the light reflection device.

Further, the light conducting portion 110 may include a light-transmitting gap; the light that enters the light-reflecting device through the light-transmitting gap is reflected by the light-reflecting device and is emitted through the light-transmitting gap. Wherein, the light enters the light reflecting device through the light-transmitting gap, and the blue light reflected by the light-reflecting device is emitted through the light-transmitting gap. There is no need to separately set the light inlet and the light outlet, so that the light-transmitting gap occupies the surface area of the substrate 100. In this way, a large layout space is reserved for the wavelength conversion part 120.

Further, the base 100 can be rotated so that the light transmission gap and the wavelength conversion portion 120 are alternately located in the preset light path; relative to the rotation axis of the base 100, the center angle corresponding to the light transmission gap may be less than 90 degrees. Among them, the central angle corresponding to the light transmission gap can be 30 degrees, 32 degrees, 35 degrees, 40 degrees, 45 degrees, 60 degrees, or 75 degrees, and the transmission can be increased or decreased according to the rotation speed of the substrate 100 and the required amount of blue light. The central angle corresponding to the light gap. For example, under the condition that the rotation speed of the substrate 100 is constant, if the required amount of blue light is large, the central angle corresponding to the light transmission gap is increased, thereby increasing the time for the light reflecting device to reflect blue light in each rotation period of the substrate 100. It should be noted that, in order to make the central angle corresponding to the light transmission gap less than 90 degrees, the light reflection device should be arranged between the rotation axis of the base 100 and the light transmission gap, so that the light reflection device is close to the light transmission gap so as to make the light reflection device close to the light transmission gap. The blue light that enters the light reflecting device through the light-transmitting gap can be emitted through the light-transmitting gap after being reflected by the light reflecting device.

As shown in FIGS. 3, 4, and 5, the light conducting device 200 may include a light integrator rod. Specifically, when the light-conducting part 110 is arranged in the preset light path of the light-conducting device 200, light enters the integrator rod through the light-conducting part 110, and blue light enters from one end of the integrator rod, and is homogenized by the integrator rod. Shoot from the other end of the optical machine rod.

Further, the light conducting portion 110 may include: a first light transmission port 111 and a second light transmission port 112; along the circumferential direction of the containing area 101, the first light transmission port 111 and the second light transmission port 112 are spaced apart on the base body 100; In the state where the light conducting portion 110 is set in the preset light path, the light integrator rod can extend from the first light transmission port 111 to the second light transmission port 112. Wherein, when the light-conducting portion 110 is located in the predetermined light path of the light-conducting device 200 during the rotation of the base 100, the rod integrator extends from the first light-transmitting port 111 to the second light-transmitting port 112. The opening area of the first light transmission port 111 may be larger than the port area of the light integrator rod, and the opening area of the second light transmission port 112 may be greater than the port area of the light integrator rod, so that the light entering time of the light integrator rod in each cycle can be adjusted . The light enters the light integrator rod through one of the first light transmission port 111 and the second light transmission port 112, and the blue light after being homogenized by the light integrator rod passes through the first light transmission port 111 and the second light transmission port 112. The other light-transmitting port shoots out.

Further, the cross section of the containing area 101 is substantially circular, and the light integrator rod extends along any diameter of the containing area 101. The base 100 surrounds and forms a receiving area 101 with a substantially circular cross-section. The light integrator rod extends along the radial direction of the receiving area 101. A rotation of the base 100 around the axis of the base can make the light-conducting part 110 located twice in the light In the light path of the integrator rod.

Further, along the extension direction of the light integrator rod, the end surfaces at both ends of the light integrator rod may be parallel to the rotation axis of the base 100. The light incident from one of the first light transmission port 111 and the second light transmission port 112 is transmitted along the light integrator rod, and the transmission direction is perpendicular to the rotation axis of the base 100.

Further, the first light transmission port 111 and the second light transmission port 112 may be symmetrical with respect to the rotation axis of the base 100; the wavelength conversion portion 120 may include an even-numbered wavelength conversion area, and a part of the wavelength conversion area and another part of the wavelength conversion area may be It is symmetrical with respect to the line connecting the centers of the first light transmission port 111 and the second light transmission port 112.

As shown in FIGS. 2 and 4, when the wavelength conversion portion 120 is located in the preset light path of the light transmission device 200, the wavelength conversion portion 120 can block the excitation light from entering the light transmission device 200, and the excitation light is converted into the light transmission device 200 by the wavelength conversion portion 120. Received by laser light and reflected.

As shown in FIG. 2, FIG. 4, and FIG. 6, in an embodiment of the present disclosure, the wavelength conversion part 120 may include an even-numbered wavelength conversion region. For example, the wavelength conversion section 120 may include: a first conversion area 121, a second conversion area 122, a third conversion area 123, and a fourth conversion area 124, wherein the third conversion area 123, the first light transmission port 111, and the second conversion area The conversion area 122, the first conversion area 121, the second light transmission port 112, and the fourth conversion area 124 may be arranged along the base 100 in sequence. The first conversion area 121 and the third conversion area 123 are both configured as green light wavelength conversion areas, and the second conversion area 122 and the fourth conversion area 124 are both configured as red light wavelength conversion areas. Under conditions, the base body 100 rotates around the axis of the base body and then around the light conducting device 200 to make the third conversion area 123, the first light transmission port 111, the second conversion area 122, the first conversion area 121, and the second light transmission port The 112 and the fourth conversion area 124 are sequentially located on the light incident side of the light path.

As shown in FIG. 2, FIG. 4, and FIG. 7, in another embodiment of the present disclosure, the wavelength conversion part 120 may include: a first conversion area 121, a second conversion area 122, a third conversion area 123, and a fourth conversion area 123. The conversion area 124, the fifth conversion area 125, and the sixth conversion area 126, wherein the first light transmission port 111, the sixth conversion area 126, the fifth conversion area 125, the fourth conversion area 124, and the second light transmission port 112, The third conversion area 123, the second conversion area 122, and the first conversion area 121 may be sequentially arranged along the base 100. The third conversion area 123 and the sixth conversion area 126 are both configured as red light wavelength conversion areas, the second conversion area 122 and the fifth conversion area 125 are both configured as yellow light wavelength conversion areas, and the fourth conversion area 124 and the first conversion area 121 are all configured as green wavelength conversion areas. Under the condition that the base body 100 surrounds the receiving area 101, the base body 100 rotates around the axis of the base body and then around the light conducting device 200 to make the first conversion area 121, the second conversion area 122, the third conversion area 123, and the fourth conversion area 121. The conversion area 124, the fifth conversion area 125, and the sixth conversion area 126 are sequentially located on the light incident side of the light path.

In an embodiment of the present disclosure, the wavelength conversion device may further include a blue light wavelength conversion element, and the blue light wavelength conversion element may be arranged in the preset light path of the light conducting device 200 and configured to convert the excitation light into a receiving light containing long-wave blue light. laser. The blue wavelength conversion element can be configured as a blue wavelength conversion material coated on the light-conducting device 200, which can convert part or all of the excitation light into a laser light containing long-wave blue light. The long-wave blue light can reduce the stimulation of the light from the wavelength conversion device to human eyes . It should be noted that if the light-conducting device 200 adopts a light reflecting device, the blue wavelength conversion element can be a blue wavelength conversion material coated on a reflective substrate, or the blue wavelength conversion material can be added to the diffuse reflection coating; if The light transmission device 200 uses a light integrator rod, and the blue wavelength conversion element uses a transparent base material. In another embodiment of the present disclosure, the wavelength conversion device may further include a polarization conversion element, the polarization conversion element is disposed in the preset light path of the light transmission device 200, and the polarization conversion element may convert the excitation light reflected by the light reflection device into The polarization state is different from the original excitation light.

As shown in Figure 2, Figure 4, Figure 5 and Figure 8, the light and shadow processing equipment provided by the embodiment of the present disclosure may include: an excitation light source 400 and the wavelength conversion device provided in the first embodiment. The position of the light source 400 is fixed; when the light conducting part 110 is located in the preset light path, the excitation light emitted by the excitation light source 400 can be injected into the light conducting device 200 along the preset light path.

Specifically, when the driving device 300 drives the substrate 100 to switch the light conducting part 110 and the wavelength conversion part 120 to be alternately located in the preset light path, the light conducting device 200 can be fixed in position relative to the excitation light source 400, thereby avoiding light exposure. The conductive device 200 is shifted, causing blue light loss or skew.

In the embodiment of the present disclosure, the light and shadow processing equipment may further include: a dichroic element 500 and a light finishing component 600; the light finishing component 600 may be configured to process the blue light and/or received laser light emitted by the wavelength conversion device and make it incident The dichroic element 500; the blue light and the received laser light are combined by the dichroic element 500 and emitted. Among them, the dichroic element 500 can reflect the blue light of the first polarization characteristic, and can transmit the blue light of the second polarization characteristic perpendicular to the polarization direction of the blue light of the first characteristic, and can reflect or transmit the blue light converted by the wavelength conversion material. By laser.

In some embodiments of the present disclosure, the blue light or the laser light emitted by the wavelength conversion device may be processed by the optical finishing component 600 and then injected into the dichroic element 500, and the blue light and the laser light emitted into the dichroic element 500 are combined. And shoot out.

In the above-mentioned embodiment of the present disclosure, the angle between the light reflecting device of the wavelength conversion device and the dichroic element 500 is 45 degrees, the blue light and the received laser light emitted by the wavelength conversion device are respectively injected into the light finishing assembly 600, and the light finishing assembly The blue light treated by 600 and the received laser light are injected into the dichroic element 500 to combine light and emit.

Specifically, the light finishing assembly 600 may include a polarization converter 610. The light emitted by the excitation light source 400 is processed by the polarization converter 610 and converted into excitation light with another polarization characteristic. The excitation light after the polarization characteristic is converted into the wavelength conversion. On the device, when the light-conducting part 110 is located in the preset light path, the excitation light passes through the light-conducting part 110 and enters the light-conducting device 200, and then is reflected back to the polarization converter 610, so as to be converted into an excitation light that is incident on the polarization converter 610. The blue light whose light polarization direction is vertical is emitted by the dichroic element 500 through reflection or transmission. In addition, the light finishing assembly 600 may further include a first lens 620, and the first lens 620 may be a convex lens, and the light entering the wavelength conversion device or emitted through the wavelength conversion device is processed by the first lens 620.

Further, the excitation light source 400 may include: a light source device 410, a second lens 420, a third lens 430, and a light homogenizing device 440, wherein the light source device 410, the second lens 420, the third lens 430, and the light homogenizing device 440 may be sequentially If configured, the second lens 420, the third lens 430, and the light homogenizing device 440 can jointly process the excitation light emitted by the light source device 410, and make the excitation light enter the dichroic element 500. The wavelength conversion device can be equipped with a compensation light source 700, the light emitted by the compensation light source 700 is incident on the dichroic element 500, the light processed by the dichroic element 500 is incident on the light finishing component 600, and the light finishing component 600 processes the incident wavelength Conversion device.

As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5, the light processing method provided by the embodiment of the present disclosure may include: irradiating the excitation light to the wavelength conversion device along the preset light path of the light conducting device 200; and driving The base 100 can be rotated or moved relative to the light conducting device 200, and the light conducting part 110 and the wavelength conversion part 120 are alternately located in the preset light path. When the light-conducting part 110 is located in the preset light path, the excitation light enters the light-conducting device 200 through the light-conducting part 110, and the blue light processed by the light-conducting device 200 is emitted; when the wavelength conversion part 120 is located in the preset light path, the wavelength conversion part 120 can convert excitation light into received laser light and be reflected. The light conducting part 110 and the wavelength conversion part 120 are alternately located in the preset light path, so that the blue light and the received laser light can be emitted sequentially in a certain time sequence without adding a blue compensation light path, and it is convenient to guide the combined light of the received laser light and blue light.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, not to limit it; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present disclosure. range.

Industrial applicability:

The present disclosure adopts that the base is provided with a light conducting part and a wavelength conversion part, and is connected to the base by a driving device, so that the light conducting part and the wavelength conversion part are alternately located in the preset light path of the light conducting device. The wavelength conversion device provided by the present disclosure When applied to blue light excitation, there is no need to add a laser for blue light compensation, which can solve the technical problem of the lack of blue light of the wavelength conversion device, which is beneficial to simplify the optical path structure. Adopt the form that the accommodating area is surrounded by the base body and the cross-section of the accommodating area is basically circular. By driving the base body to rotate around the axis of the base body, the way that the light conducting part and the wavelength conversion part are alternately located in the preset light path is switched. Compared with the way of driving the reciprocating movement of the base, the base enclosing and forming the containing area can have a larger size, better heat dissipation performance, and higher conversion efficiency.

Claims

A wavelength conversion device, which is characterized by comprising: a base (100), a light conducting device (200) and a driving device (300);

The base body (100) is provided with a light conducting part (110) and a wavelength conversion part (120);

The driving device (300) is in transmission connection with the base body (100), so that the light-conducting part (110) and the wavelength conversion part (120) are alternately located at a preset position of the light-conducting device (200) In the light path.
The wavelength conversion device according to claim 1, wherein the base body (100) is surrounded to form a containing area (101);

Along the circumferential direction of the containing area (101), the light conducting portion (110) and the wavelength conversion portion (120) are sequentially provided on the base body (100);

The driving device (300) is configured to drive the base body (100) to rotate around the axis of the base body (100) and then around the light conducting device (200).
The wavelength conversion device according to claim 1, wherein the light-conducting device (200) comprises a light-reflecting device;

The light reflecting device is configured to reflect the light entering the light reflecting device through the light conducting portion (110) in a state where the light conducting portion (110) is located in the preset light path, and It is emitted through the light conducting part (110).
The wavelength conversion device according to claim 3, wherein the light-conducting part (110) comprises a light-transmitting gap;

The light that enters the light reflection device through the light transmission gap is reflected by the light reflection device and is emitted through the light transmission gap.
The wavelength conversion device according to claim 4, wherein the base body (100) rotates so that the light transmission gap and the wavelength conversion portion (120) are alternately located in the preset light path;

Relative to the rotation axis of the base body (100), the central angle corresponding to the light-transmitting gap is less than 90 degrees.
The wavelength conversion device according to claim 5, characterized in that, in a state where the light-conducting part (110) is located in the preset light path, the light-conducting device (200) is located on the base (100). Between the axis of rotation and the light-transmitting gap.
The wavelength conversion device according to claim 2, wherein the light-conducting device (200) comprises an optical integrator rod.
The wavelength conversion device according to claim 7, wherein the cross section of the containing area (101) is circular, and the rod integrator extends along any diameter of the containing area (101).
The wavelength conversion device according to claim 7, characterized in that, along the extension direction of the optical integrator rod, the end faces at both ends of the optical integrator rod are parallel to the rotation axis of the base body (100).
The wavelength conversion device according to claim 7, wherein the light conducting portion (110) comprises: a first light-transmitting port (111) and a second light-transmitting port (112);

Along the circumferential direction of the accommodating area (101), the first light-transmitting opening (111) and the second light-transmitting opening (112) are arranged on the base (100) at intervals;

In a state where the light conducting portion (110) is located in the preset light path, the light integrator rod extends from the first light transmission port (111) to the second light transmission port (112).
The wavelength conversion device according to claim 10, wherein the opening area of the first light transmission port (111) is larger than the port area of the light integrator rod;

The opening area of the second light transmission port (112) is larger than the port area of the light integrator rod.
The wavelength conversion device according to claim 10, wherein the first light transmission port (111) and the second light transmission port (112) are symmetrical with respect to the rotation axis of the base body (100);

The wavelength conversion part (120) includes an even-numbered wavelength conversion area, and a part of the wavelength conversion area and another part of the wavelength conversion area are opposite to the first light transmission port (111) and the second light transmission port ( The center line of 112) is symmetrical.
The wavelength conversion device according to any one of claims 1-12, wherein the wavelength conversion device further comprises a blue wavelength conversion element, and the blue wavelength conversion element is arranged on the pre-stage of the light conducting device (200). Suppose the optical path is configured to convert the excitation light into a receiving laser light containing long-wave blue light.
The wavelength conversion device according to claims 1-13, wherein the wavelength conversion portion (120) comprises: a first conversion area (121), a second conversion area (122), and a third conversion area (123) And a fourth conversion area (124), wherein the third conversion area (123), the first light transmission port (111), the second conversion area (122), the first conversion area (121) ), the second light-transmitting port (112) and the fourth conversion zone (124) are sequentially arranged along the base (100), the first conversion zone (121) and the third conversion zone (123) ) Are configured as green light wavelength conversion regions, and the second conversion region (122) and the fourth conversion region (124) are both configured as red light wavelength conversion regions.
The wavelength conversion device according to claims 1-13, wherein the wavelength conversion portion (120) comprises: a first conversion area (121), a second conversion area (122), and a third conversion area (123) , The fourth conversion area (124), the fifth conversion area (125) and the sixth conversion area (126), wherein the first light transmission port (111), the sixth conversion area (126), the The fifth conversion area (125), the fourth conversion area (124), the second light transmission port (112), the third conversion area (123), the second conversion area (122) and the The first conversion area (121) is sequentially arranged along the substrate (100), the third conversion area (123) and the sixth conversion area (126) are both configured as red wavelength conversion areas, and the second The conversion area (122) and the fifth conversion area (125) are both configured as yellow light wavelength conversion areas, and the fourth conversion area (124) and the first conversion area (121) are both configured as green light wavelength conversion areas. Area.
The wavelength conversion device according to any one of claims 3-6, wherein the wavelength conversion device further comprises a polarization conversion element, and the polarization conversion element is arranged on a preset optical path of the light conducting device (200). In the embodiment, it is configured to convert the polarization state of the excitation light reflected by the light reflection device.
A light and shadow processing equipment, comprising: an excitation light source (400) and the wavelength conversion device according to any one of claims 1-16, and the light conducting device (200) is opposite to the excitation light source (400) Fixed position

In a state where the light conducting portion (110) is located in the preset light path, the excitation light emitted by the excitation light source (400) is incident on the light conducting device (200) along the preset light path.
The light and shadow processing equipment according to claim 17, characterized in that it further comprises: a dichroic element (500) and a light finishing component (600);

The optical finishing component (600) is configured to process the blue light and/or received laser light emitted by the wavelength conversion device and make it incident on the dichroic element (500);

The blue light and the received laser light are combined by the dichroic element (500) and emitted.
The light and shadow processing equipment according to claim 18, wherein the light finishing component (600) comprises a polarization converter (610) and a first lens (620).
The light and shadow processing equipment according to claims 17-19, wherein the excitation light source (400) comprises: a light source device (410), a second lens (420), a third lens (430) and a homogenizing device ( 440), wherein the light source device (410), the second lens (420), the third lens (430) and the light homogenizing device (440) are arranged in sequence.
The light and shadow processing equipment according to claims 17-20, wherein the wavelength conversion device further comprises a compensation light source (700).
A light processing method, characterized in that it comprises:

Shoot the excitation light to the wavelength conversion device along the preset light path of the light transmission device (200);

The driving base body (100) rotates or moves relative to the light conducting device (200), and the light conducting part (110) and the wavelength conversion part (120) are alternately located in the preset light path.