CN211043924U

CN211043924U - Light conduction fluorescence section of thick bamboo, light source structure and projection equipment

Info

Publication number: CN211043924U
Application number: CN201922265488.1U
Authority: CN
Inventors: 来源; 康庆; 陈龙
Original assignee: Wuxi Seemile Laser Display Technology Co Ltd
Current assignee: Wuxi Seemile Laser Display Technology Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-07-17
Anticipated expiration: 2029-12-16

Abstract

The utility model provides a light conduction fluorescence section of thick bamboo, light source structure and projection equipment relates to projection equipment technical field, and the light conduction fluorescence section of thick bamboo includes fluorescence section of thick bamboo base member, is provided with light conduction district and wavelength conversion district on the fluorescence section of thick bamboo base member; the fluorescent tube comprises a light guide component, the light guide component extends from the light conduction area, the tail end of the light guide component is tilted, and the tilting height is such that light guided out by the light guide component is not blocked or is rarely blocked by the wall of the fluorescent tube. The utility model discloses a fluorescent tube can accomplish that monochromatic colour luminance is brighter, and the light efficiency is higher.

Description

Light conduction fluorescence section of thick bamboo, light source structure and projection equipment

Technical Field

The utility model belongs to the technical field of projection equipment technique and specifically relates to a light conduction fluorescence section of thick bamboo, light source structure and projection equipment are related to.

Background

The power of the laser projection device is increased, and the volume of the laser projection device is increased according to the heat dissipation requirement of the laser projection device. Taking the cylindrical wavelength conversion device as an example, as the power of the projection equipment increases, in order to ensure that the cylindrical wavelength conversion device has good heat dissipation performance, the radial size of the drum module also increases, so that the height size of the projection equipment increases, and the stability of the projection equipment is adversely affected. In addition, the single beam of blue light emitted by the laser cannot pass through the existing light-conducting fluorescent tube, and the projection equipment needs to be additionally provided with the laser to provide the blue light, so that the size of the projection equipment is further increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a light conduction fluorescence section of thick bamboo, light source and projection equipment, the utility model discloses a perk of leaded light subassembly tail end, fluorescence section of thick bamboo needn't dispose the opening that is used for leaded light stick light-emitting again, one color (all kinds) section sector of tube-shape wavelength conversion equipment is exactly a complete part, uses an RGBY's mode, does not need each color section to be equally divided by twice and more than twice in 360.

A light-conducting fluorescent tube comprises a fluorescent tube base body, wherein a light-conducting region and a wavelength conversion region are arranged on the fluorescent tube base body;

the fluorescent tube comprises a light guide assembly, the light guide assembly extends from the light conduction area, the tail end of the light guide assembly is tilted, and the tilting height is such that light guided out by the light guide assembly is not or rarely intercepted by the wall of the fluorescent tube.

In one embodiment of the present invention, the light-transmitting fluorescent tube is configured to be rotated to switch between the light-transmitting region and the wavelength converting region.

In an embodiment of the present invention, the end of the light conducting component is erected on the wall of the fluorescent tube or suspended above the fluorescent tube.

In an embodiment of the present invention, the light guide assembly includes a light guide rod.

In an embodiment of the present invention, the light-conducting fluorescent tube includes a driving device, the base body is connected to the driving device in a transmission manner, and the light-guiding assembly is connected to the driving device in a transmission manner, so that the base body rotates relative to the light-guiding assembly.

The driving device is a driving motor.

In an embodiment of the present invention, the light-conducting fluorescent tube includes a driving device, the base body is connected to the light guide assembly, so that the base body and the light guide assembly rotate synchronously.

The utility model discloses an in an embodiment, the light conduction district is for setting up a printing opacity opening on the fluorescence section of thick bamboo wall, and light guide component extends from the opening part, and the tail end perk makes light conduction component derive the light, and the light of deriving is not blocked by fluorescence section of thick bamboo wall or is scarcely blocked, and the region setting except that printing opacity opening is the wavelength conversion district on the fluorescence cylinder outer wall, light guide component will penetrate into printing opacity open-ended light and derive.

The utility model also provides a light source structure, which comprises the light conduction fluorescent tube; the light source is provided with a first light path and a second light path, emergent light of the light-conducting fluorescent tube in the light-conducting area is emitted into the first light path, and emergent light of the light-conducting fluorescent tube in the wavelength conversion station is emitted into the second light path;

the light led out by the light guide component of the first light path of the light source structure is combined with the light led into the second light path and emitted out by configuring at least two light reflecting mirrors.

In an embodiment of the present invention, the light source structure includes: a light combining device and a light path guiding device;

emergent light of one of the first light path and the second light path is emitted into the light path guiding device and is processed by the light path guiding device to be emitted into the light combining device;

emergent light of the other of the first light path and the second light path is emitted into the light combining device;

the light combining device is used for combining light and emitting the light;

the rotation axis of the light-transmitting fluorescent tube extends in a vertical direction so that the thickness of the entire light source approaches the thickness of the fluorescent tube.

The utility model also provides a projection equipment, projection equipment be equipped with as above light conduction fluorescence section of thick bamboo or as above light source structure.

The embodiment of the utility model provides a following beneficial effect has been brought: the utility model discloses a perk of leaded light subassembly tail end, a fluorescence section of thick bamboo needn't dispose the opening that is used for leaded light stick light-emitting again, and one colour (all kinds of) section sector of tube-shape wavelength conversion equipment is exactly a complete part, uses an RGBY's mode, does not need each colour section to be divided equally twice and twice more in 360. The utility model discloses can accomplish that monochromatic colour luminance is brighter, the light efficiency is higher.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a light-transmitting fluorescent tube according to an embodiment of the present invention;

FIG. 2 is a right side view of a schematic structure of a light-conducting fluorescent tube according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a light guide assembly according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a light-transmitting fluorescent tube according to an embodiment of the present invention;

fig. 5 is a schematic view of a light path of a light source according to an embodiment of the present invention.

In the figure: 100-a substrate; 101-a light transmissive opening; 102-a wavelength conversion region; 200-a light guide assembly; 300-a drive device; 410-a light splitting sheet; 420-a first lens; 430-a light pipe; 440 a color filter wheel; 510-a laser source; 520-a fourth lens; 530-collimating lens; 540-a third diffuser; 610-a first mirror; 620-a second mirror; 630-a third mirror; 001-first optical path; 002-second optical path; z-vertical direction.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

As shown in fig. 1 and fig. 2, a light-conducting fluorescent tube provided by an embodiment of the present invention includes a fluorescent tube base body, on which a light-conducting region and a wavelength conversion region are disposed;

Specifically, the rotation axis of the light-transmitting fluorescent tube extends in the vertical direction Z, and in order to improve the heat dissipation efficiency of the light-transmitting fluorescent tube, the radial dimension of the light-transmitting fluorescent tube can be increased without causing an increase in the thickness dimension of the light-transmitting fluorescent tube. The axial dimension of the light-transmitting fluorescent cartridge may be configured to be 3cm to 4.5cm, for example: 3.5cm or 4cm, so that the light-conducting fluorescent tube can be used for manufacturing an ultrathin portable laser projection device.

In an embodiment of the present invention, a light-conducting fluorescent tube includes a base 100; the fluorescent tube base body is provided with a light conduction area and a wavelength conversion area; the fluorescent tube comprises a light guide assembly 200, wherein the light guide assembly 200 extends from the light conduction area, the tail end of the light guide assembly is tilted, and the tilting height is such that light guided out by the light guide assembly is not or hardly intercepted by the wall of the fluorescent tube. Specifically, the light conduction region is a light transmission opening 101 formed in the fluorescent tube wall, the light guide assembly 200 extends from the opening, the tail end of the light guide assembly tilts to enable the light conduction assembly to guide out light, the guided light is not blocked or is rarely blocked by the fluorescent tube wall, the region of the outer wall of the fluorescent tube except the light transmission opening 101 is set as a wavelength conversion region 102, and the light guide assembly 200 guides out light emitted into the light transmission opening 101. The light conduction region can be used for transmitting blue light, the substrate 100 rotates around an axis extending along the vertical direction Z, the wavelength conversion region 102 and the light conduction region alternately pass through a light path, and when the light transmission opening 101 is arranged in the light path, the blue light can be transmitted through the light conduction fluorescent tube, so that the blue light path can be formed without adding a blue laser.

Further, the light-transmissive fluorescence cartridge is configured to switch between the light-transmissive region and the wavelength-converting region by rotation; in the light conduction working area, the light rays entering the light conduction fluorescent tube are emitted out through the light transmission opening 101 and the light guide assembly 200; in the wavelength conversion region, the light rays emitted into the light-transmitting fluorescent tube are converted into laser light by excitation and emitted.

Specifically, the blue light can be processed and transmitted through the light guide assembly 200, and the substrate 100 is rotated, thereby switching to the blue light conduction station or the wavelength conversion station. Light guide assembly 200 includes a light guide rod. The blue light emitted into the light guide rod through the light-transmitting opening 101 is transmitted along the light guide rod, and the light guide rod can be a solid or hollow glass rod. The light guide rod has a light homogenizing effect on the blue light, so that the blue light can be transmitted without damage, and the thickness of the light conduction fluorescent tube is not required to be increased for arranging the light guide rod.

Further, the end face of the light guide rod may be coated with a fluorescent wavelength converter so as to be able to generate partial excitation, for example, blue light with excitation light of 455 nm. The end face of the light guide rod is coated with the blue powder, the 455nm blue light which is partially excited is projected to enter the light guide rod, the 490nm long-wave blue light which is partially excited by the fluorophor is reflected and does not enter the light guide rod, the blue light diversification can be realized according to the thickness of the fluorophor, namely the exciting proportion of the thickness control part of the blue powder, and the blue color saturation can be enhanced.

As shown in fig. 1 and 2, the base body 100 is drivingly connected to a rotor of the driving device 300, and the light guide assembly 200 is connected to a stator of the driving device 300, so that the base body 100 rotates relative to the light guide assembly 200.

Specifically, the light guide assembly 200 is connected to the stator of the driving device 300, the light guide assembly 200 is fixed with respect to the optical path of the incident light, and the blue light incident into the light guide assembly 200 can be transmitted along the light guide assembly 200. During the rotation of the substrate 100, when the light-transmitting opening 101 is located in the light path of the light guide assembly 200, light is incident into the light guide assembly 200 through the light-transmitting opening 101 and is emitted out through the light guide assembly 200. When the wavelength converting region 102 is located in the optical path of the light guide assembly 200, the light guide assembly 200 is shielded by the wavelength converting region 102, and the light is processed and reflected by the wavelength converting region 102.

Alternatively, the base 100 is connected to the light guide member 200 such that the base 100 and the light guide member 200 rotate in synchronization.

Specifically, the sidewall of the base 100 is provided with holes along the radial direction, and the light guide assembly 200 is inserted into the holes and extends along the radial direction of the base 100. The substrate 100 and the light guide member 200 are rotated synchronously about the axis of the substrate 100 to effect switching between the light conducting region and the wavelength converting region.

Example two

As shown in fig. 5, a light source provided by an embodiment of the present invention includes a light-transmitting fluorescent tube provided by the first embodiment; the light source is provided with a first light path 001 and a second light path 002, emergent light of the light-conducting fluorescent tube in the light-conducting area is emitted into the first light path 001, and emergent light of the light-conducting fluorescent tube in the wavelength conversion area is emitted into the second light path 002; the light source is arranged to combine the light beam incident on the first optical path 001 and the light beam incident on the second optical path 002 and emit them.

In some embodiments, the first optical path 001 coincides with the second optical path 002, and the blue light emitted through the first optical path 001 and the stimulated light emitted through the second optical path 002 are combined and emitted.

In this embodiment, in the first light path 001, because the tail end of the light guide assembly 200 is tilted, the light source structure is configured to combine the light entering the first light path 001 and the light entering the second light path 002 through at least two light folding mirrors and emit the combined light; the refraction angles of the two refraction reflectors need to be adjusted according to the tilting angle of the tail end of the light guide assembly 200.

In an embodiment of the present invention, the light source includes: a light combining device and a light path guiding device; the light combining device comprises a 410-light splitting sheet, a 420-first lens, a 430-light guide pipe and a 440-color filter wheel; the optical path directing device includes 610-a first reflective mirror, 620-a second reflective mirror, 630-a third reflective mirror; emergent light of one of the first light path 001 and the second light path 002 is emitted into the light path guiding device and is processed by the light path guiding device to be emitted into the light combining device; the other emergent light of the first light path 001 and the second light path 002 is emitted into the light combining device; the light combining device is used for combining light and emitting the light.

Specifically, the light source includes: an excitation light source comprising 510-a laser source; 520-a fourth lens; 530-collimating lens; 540-a third diffuser; the excitation light emitted from the excitation light source is processed by the spectroscope 410 and emitted into the light-transmitting fluorescence tube. In the wavelength conversion region, the excitation light is converted into stimulated light, the stimulated light is reflected to the light splitting sheet 410, and the stimulated light is emitted after being transmitted through the light splitting sheet 410. Blue light is conducted at the light conduction station, the blue light rays are emitted into the light guide assembly 200, the blue light emitted by the light guide assembly 200 is emitted into the light path guide device, the blue light is emitted into the light splitting sheet 410 under the guide of the light path guide device, and the blue light processed by the light splitting sheet 410 is emitted along the same direction of the received laser, so that light combination is realized. Alternatively, the light combining device is disposed on the light emitting side of the light guide assembly 200, and the blue light emitted from the light guide assembly 200 is incident on the light combining device. The received laser light formed by the processing of the wavelength conversion part 120 is emitted into the light path guiding device, and the received laser light is emitted into the light combining device through the transmission of the light path guiding device, so that the combination of the blue light and the received laser light is realized.

Further, the blue light and the received laser light emitted by the light combining device 400 are emitted into the first lens 420, and the blue light and the received laser light are combined by the first lens 420.

Further, the first lens 420 guides the blue light and the received laser light into the light guide 430, and the blue light and the received laser light are further combined at the light guide 430 and emitted to the outside of the light source.

Further, the blue light emitted from the light-transmitting fluorescent tube or the laser light is emitted into the first reflective mirror 610, the first reflective mirror 610 guides the light to emit into the second reflective mirror 620, the light is guided by the second reflective mirror 620 to emit into the third reflective mirror 630, and the light is emitted into the light combining device after being processed by the third reflective mirror 630. A second lens is arranged between the first reflective mirror 610 and the second reflective mirror 620, a third lens and a first diffusion sheet are arranged between the second reflective mirror 620 and the third reflective mirror 630, and a second diffusion sheet is arranged between the third reflective mirror 630 and the light combining device. The first lens 420, the second lens and the third lens can be all convex lenses, and light transmitted along the light path guiding device can be homogenized through the light path guiding device.

Further, the laser source 510 emits excitation light and emits the excitation light to the fourth lens 520, the fourth lens 520 is a convex lens, the excitation light processed by the fourth lens 520 emits to the collimating lens 530, the light processed by the collimating lens 530 emits to the third diffusion sheet 540, the excitation light emitted by the third diffusion sheet 540 emits to the light splitting sheet 410, and the excitation light is processed by the light splitting sheet 410 and emits to the light-transmitting fluorescent tube.

EXAMPLE III

As shown in fig. 1, a projection apparatus provided in an embodiment of the present invention is provided with a light-transmitting fluorescent tube provided in the first embodiment. Adopt a light conduction fluorescence section of thick bamboo, and a light conduction fluorescence section of thick bamboo is through rotatory in order to switch between blue light conduction station and wavelength conversion station, and the axis of rotation of a light conduction fluorescence section of thick bamboo extends along vertical direction (the Z direction in figure 1) to can reduce the thickness size of projection equipment for assembling the configuration of a light conduction fluorescence section of thick bamboo, and then be applicable to the preparation thickness size and be less than 4cm ultra-thin projection equipment, in order to satisfy the market demand of portable official working.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A light-transmitting fluorescence cartridge comprising a fluorescence cartridge base body (100) on which a light-transmitting region and a wavelength converting region are provided;

2. A light-conducting fluorescent cartridge according to claim 1, configured to be rotated to switch between the light-conducting region and the wavelength-converting region.

3. A light-conducting fluorescent cartridge according to claim 1, in which the trailing end of the light-conducting assembly is mounted on or suspended above the fluorescent cartridge wall.

4. The light conducting fluorescence cartridge of any of claims 1-3, wherein the light guiding assembly (200) comprises a light guiding rod.

5. The light-conducting fluorescent cartridge of claim 4, comprising a drive device (300), wherein the base body (100) is in drive connection with a rotor of the drive device (300), and wherein the light-guiding assembly (200) is connected with a stator of the drive device (300) for rotating the base body (100) relative to the light-guiding assembly (200).

6. The light-conducting fluorescence cartridge according to claim 4, characterized in that it comprises a drive means, the base body (100) being connected to the light-guiding assembly (200) for synchronizing the rotation of the base body (100) and the light-guiding assembly (200).

7. The light-conducting fluorescent tube according to claim 5 or 6, wherein the light-conducting area is a light-transmitting opening (101) arranged on the wall of the fluorescent tube, the light-conducting component extends from the opening, the tail end of the light-conducting component is tilted to lead the light-conducting component out, the led light is not or hardly blocked by the wall of the fluorescent tube, the area of the outer wall of the fluorescent tube except the light-transmitting opening (101) is arranged as a wavelength conversion area, and the light-conducting component guides the light emitted into the light-transmitting opening (101) out.

8. A light source structure comprising the light-transmitting fluorescent tube according to any one of claims 1 to 7; the light source is provided with a first light path (001) and a second light path (002), emergent light of the light-conduction fluorescent tube in the light-conduction area is emitted into the first light path (001), and emergent light of the light-conduction fluorescent tube in the wavelength conversion area is emitted into the second light path (002);

the light guided out by the light guide component (200) of the first light path (001) of the light source structure is combined with the light entering the second light path (002) and emitted out by configuring at least two refraction reflectors.

9. The light source structure according to claim 8, wherein the light source comprises: a light combining device and a light path guiding device;

emergent light of one of the first light path (001) and the second light path (002) is emitted into the light path guiding device and is processed by the light path guiding device to be emitted into the light combining device;

the emergent light of the other of the first light path (001) and the second light path (002) is emitted into the light combining device;

the light combining device is used for combining light and emitting the light;

10. A projection device, characterized in that the projection device is provided with a light-transmitting fluorescent cartridge according to any of claims 1 to 7 or a light source structure according to any of claims 8 to 9.