CN212112109U - Dichroic sheet galvanometer and optical device - Google Patents
Dichroic sheet galvanometer and optical device Download PDFInfo
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- CN212112109U CN212112109U CN202021012053.2U CN202021012053U CN212112109U CN 212112109 U CN212112109 U CN 212112109U CN 202021012053 U CN202021012053 U CN 202021012053U CN 212112109 U CN212112109 U CN 212112109U
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- dichroic
- bogie
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Abstract
The utility model provides a two to color chip galvanometer and optical equipment relates to optics technical field. The dichroic sheet galvanometer is applied to optical equipment; the dichroic sheet vibrating mirror comprises a dichroic sheet and a fixed frame, and the dichroic sheet is arranged on the fixed frame through a steering mechanism; the dichroic sheet can rotate relative to the fixed frame through the steering mechanism, and the technical problem that the light path is easy to deviate from the correct position in the prior art is solved.
Description
Technical Field
The utility model belongs to the technical field of the optics technique and specifically relates to a dichroic sheet shakes mirror and optical equipment is related to.
Background
With the development of optical projection technology, laser projectors have been increasingly used. Most of laser projectors use blue laser, and obtain light of other colors by adding fluorescent powder of other colors, so as to obtain a color light source. When the light paths of light with different colors are processed, a dichroic sheet is usually adopted, and the separation and synthesis of the light with different colors are realized by utilizing the characteristics of the dichroic sheet in respectively reflecting and transmitting the light with different colors.
At present, each component constituting the optical path in the laser projector is fixed in advance. For example, dichroic plates are used that reflect blue light, transmit red and green light. Blue laser emitted by a light source in the laser projector is reflected by the dichroic sheet for the first time and then irradiates the fluorescent wheel, and when the fluorescent wheel is driven by the motor to rotate to a red fluorescent powder area or a green fluorescent powder area, the blue laser can excite red light and green light and then is transmitted by the dichroic sheet. When the motor drives the fluorescent wheel to rotate to the light-transmitting sheet area, the blue light penetrates through the fluorescent wheel, is reflected for the second time by the dichroic sheet after passing through another light path, and finally the red light, the green light and the blue light are combined into mixed color light at the emergent position of the dichroic sheet. In the above process, the separation and synthesis of different color lights are realized by the dichroic sheet.
In the prior art, since the dichroic plates are fixed, the optical path through the dichroic plates is also fixed. If the dichroic filter is positioned in a deviated way, the technical problem that the light path deviates from the correct position is easily caused, the output of light energy is influenced, and the color deviation of the light source is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dichroic sheet shakes mirror and optical equipment to alleviate the technical problem who leads to the skew correct position of light path among the prior art easily.
In a first aspect, the present invention provides a dichroic mirror for use in an optical device;
the dichroic sheet vibrating mirror comprises a dichroic sheet and a fixed frame, and the dichroic sheet is arranged on the fixed frame through a steering mechanism;
the dichroic sheet may be rotatable relative to the mount by the steering mechanism.
Further, the steering mechanism comprises a bogie and a rotating shaft;
the dichroic sheet is fixedly connected with the bogie, and the bogie is connected with the fixed frame through the rotating shaft;
the bogie can rotate relative to the fixed frame through the rotating shaft.
Further, the steering mechanism comprises a first steering frame, a first rotating shaft, a second steering frame and a second rotating shaft;
the dichroic sheet is fixedly connected with the first bogie, the first bogie is connected with the second bogie through the first rotating shaft, the second bogie is connected with the fixing frame through the second rotating shaft, and the axial directions of the first rotating shaft and the second rotating shaft are mutually vertical;
the first bogie is rotatable relative to the second bogie by the first axle;
the second bogie can rotate relative to the fixed frame through the second rotating shaft.
Further, the dichroic sheet galvanometer further comprises a driving component;
the driving component provides driving force to enable the dichroic sheet to rotate relative to the fixed frame through the steering mechanism.
Further, the driving assembly is an electromagnetic driving assembly.
Further, the electromagnetic drive assembly includes a magnet and a coil;
the magnet is fixedly connected with the dichroic sheet, and the coil is fixedly connected with the fixing frame;
or the coil is fixedly connected with the dichroic sheet, and the magnet is fixedly connected with the fixing frame.
In a second aspect, the present invention further provides an optical device, comprising a light source, a fluorescent wheel, a reflective optical path, a transmissive optical path, and the dichroic mirror;
the light emitted by the light source forms incident light with different wavelengths after passing through the fluorescent wheel;
and the incident light with different wavelengths is reflected and transmitted by the dichroic sheet vibrating mirror in the reflection light path and the transmission light path respectively to form emergent light.
Further, the fluorescent wheel comprises a third rotating shaft and a rotating disc, and the rotating disc can rotate around the third rotating shaft;
the rotary table is sequentially provided with a light-transmitting area and an excitation area along the circumferential direction, and the excitation area is provided with fluorescent powder with at least two colors.
Further, the fluorescent wheel comprises at least two excitation areas, and fluorescent powder with different colors is respectively arranged in each excitation area;
when the dichroic filters rotate to different angles respectively, incident light emitted by the light source reaches different excitation regions respectively after being reflected by the dichroic filters.
Further, the optical device is a projector.
The utility model provides a two to the dichroic film mirror that shakes can be applied to optical equipment such as laser projector, and this two to the dichroic film mirror that shakes includes two to dichroic film and mount. Wherein the dichroic filter is mounted on the mount via a steering mechanism, and the dichroic filter is rotatable relative to the mount via the steering mechanism. When the position of the dichroic sheet has deviation, the position and the angle of the dichroic sheet can be adjusted by using the steering mechanism, so that the light path is adjusted to the correct position, the phenomena that the output of light energy is influenced, the color of a light source deviates and the like are avoided, and the technical problem that the light path is easy to deviate from the correct position in the prior art is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described 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 dichroic mirror according to an embodiment of the present invention;
fig. 2 is another schematic diagram of a dichroic mirror according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an optical apparatus provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of another optical apparatus provided in an embodiment of the present invention;
fig. 5 is a schematic view of a fluorescent wheel according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
At present, each component constituting the optical path in the laser projector is fixed in advance. For example, dichroic plates are used that reflect blue light, transmit red and green light. Blue laser emitted by a light source in the laser projector is reflected by the dichroic sheet for the first time and then irradiates the fluorescent wheel, and when the fluorescent wheel is driven by the motor to rotate to a red fluorescent powder area or a green fluorescent powder area, the blue laser can excite red light and green light and then is transmitted by the dichroic sheet. When the motor drives the fluorescent wheel to rotate to the light-transmitting sheet area, the blue light penetrates through the fluorescent wheel, is reflected for the second time by the dichroic sheet after passing through another light path, and finally the red light, the green light and the blue light are combined into mixed color light at the emergent position of the dichroic sheet. In the above process, the separation and synthesis of different color lights are realized by the dichroic sheet.
In the prior art, since the dichroic plates are fixed, the optical path through the dichroic plates is also fixed. If the dichroic filter is positioned in a deviated way, the technical problem that the light path deviates from the correct position is easily caused, the output of light energy is influenced, and the color deviation of the light source is caused. On the other hand, when the optical path is required to be changed according to the requirement, the dichroic film with a fixed position limits the optical path, and the optical path cannot be flexibly changed.
The embodiment of the utility model provides a dichroic sheet shakes mirror can be applied to in optical equipment such as laser projector. As shown in fig. 1, the dichroic mirror includes a dichroic plate 1 and a mount 2, the dichroic plate 1 being mounted on the mount 2 by a steering mechanism, and the dichroic plate 1 being rotatable with respect to the mount 2 by the steering mechanism.
When the position of the dichroic sheet 1 has deviation, the position and the angle of the dichroic sheet 1 can be adjusted by using the steering mechanism, so that the light path is adjusted to the correct position, the phenomena that the output of light energy is influenced, the color of a light source deviates and the like are avoided, and the technical problem that the light path is easy to deviate from the correct position in the prior art is solved.
In one possible embodiment, the steering mechanism may include a bogie and a spindle. The dichroic sheet 1 is fixedly connected with a bogie, the bogie is connected with the fixed frame 2 through a rotating shaft, and the bogie can rotate relative to the fixed frame 2 through the rotating shaft, so that the dichroic sheet 1 rotates relative to the fixed frame 2.
As shown in fig. 1 and 2, the steering mechanism in the present embodiment includes a first bogie 31, a first rotating shaft 41, a second bogie 32, and a second rotating shaft 42. The dichroic sheet 1 is fixedly connected with the first bogie 31, the first bogie 31 is connected with the second bogie 32 through a first rotating shaft 41, the second bogie 32 is connected with the fixed frame 2 through a second rotating shaft 42, and the axial directions of the first rotating shaft 41 and the second rotating shaft 42 are perpendicular to each other. It can be seen that the first rotating shaft 41 is transverse, the second rotating shaft 42 is longitudinal, the first bogie 31 can rotate relative to the second bogie 32 through the first rotating shaft 41, and the second bogie 32 can rotate relative to the fixed frame 2 through the second rotating shaft 42, so that the dichroic plate 1 can rotate with two directions as central axes, and the dichroic plate 1 can rotate to any angle in a three-dimensional space, thereby being easier to adjust the position and the angle of the dichroic plate 1.
In other possible embodiments, the rotating shaft may be arranged in only one direction according to actual needs, for example, only the first rotating shaft 41 in fig. 1 and 2 is retained, and the first bogie 31 is directly connected with the fixed frame 2 through the first rotating shaft 41.
In a possible implementation manner, the dichroic mirror provided by the embodiments of the present invention further includes a driving assembly. The driving assembly provides a driving force, such as an electromagnetic force, a traction force, and rotates the dichroic filter 1 relative to the fixed frame 2 through the steering mechanism.
As shown in fig. 1 and 2, the driving assembly in this embodiment is an electromagnetic driving assembly, which includes a magnet 51 and a coil 52. It can be seen that a plurality of magnets 51, which are permanent magnets, are mounted on the periphery of the first bogie 31, and since the magnets 51 and the dichroic plates 1 are fixed to the first bogie 31, the magnets 51 and the dichroic plates 1 are also fixedly connected to each other. On the other hand, the coil 52 is fixedly connected to the periphery of the fixing frame 2, and when a current of an appropriate magnitude and direction flows through the coil 52, an electromagnetic field is formed around the coil 52, and an electromagnetic force interacting with the magnet 51 is generated, so that the dichroic plate 1 rotates, thereby adjusting the position and angle of the dichroic plate 1.
In another embodiment, the coil may be fixedly connected to the dichroic filter, and the magnet may be fixedly connected to the holder.
The embodiment of the utility model provides a still provide an optical equipment, specifically can be laser projector etc.. As shown in fig. 3, the optical apparatus includes a light source, a fluorescent wheel 63, a reflection light path, a transmission light path, and the dichroic plate galvanometer provided by the embodiment of the present invention, and only the dichroic plate 1 is shown in fig. 3. The light emitted by the light source passes through the fluorescent wheel 63 to form incident light with different wavelengths, and the incident light with different wavelengths is reflected and transmitted by the dichroic sheet vibrating mirror in the reflection light path and the transmission light path respectively to form emergent light.
For example, the dichroic sheet in the present embodiment can reflect blue light, and transmit light of other wavelength bands. Taking a blue laser light source as an example, blue light Lb emitted from the light source is reflected by the dichroic plate 1, passes through the lens 61, and reaches the fluorescent wheel 63. The fluorescent wheel 63 includes a third rotating shaft and a rotating disc, the rotating disc can rotate around the third rotating shaft, a light-transmitting area and an excitation area are sequentially arranged on the rotating disc along the circumferential direction, and the excitation area is provided with fluorescent powders of at least two colors, such as red fluorescent powder and green fluorescent powder.
The blue light Lb emitted from the light source passes through the fluorescent wheel 63 to form incident light with different wavelengths, for example, the blue light Lb still passes through the transparent region of the fluorescent wheel 63 and then remains as the blue light Lb; after the blue light Lb irradiates the red fluorescent powder in the excitation area, red light Lr can be excited; after the blue light Lb irradiates the green phosphor in the excitation area, green light Lg is excited. The blue light Lb is emitted after passing through a reflection optical path formed by two lenses 61, three reflectors 62 and the dichroic plate 1; the red light Lr and the green light Lg pass through a transmission optical path constituted by one lens 61 and the dichroic sheet 1, and are mixed with the blue light Lb to form outgoing light containing three colors of red, green, and blue.
When the position of the dichroic sheet 1 has deviation, the position and the angle of the dichroic sheet 1 can be adjusted by using the steering mechanism, so that the light path is adjusted to the correct position, the phenomena that the output of light energy is influenced, the color of a light source deviates and the like are avoided, and the technical problem that the light path is easy to deviate from the correct position in the prior art is solved.
In other embodiments, the dichroic filter may be blue transmissive, red reflective, green reflective, or other reflective and transmissive properties.
The embodiment of the present invention further provides another optical device, as shown in fig. 4, the optical device includes a fluorescent wheel 63, a lens 61, and the dichroic mirror provided in the above embodiment. The fluorescent wheel 63 includes at least two excitation regions, each of which is provided with fluorescent powder of different colors, as shown in fig. 5, the fluorescent wheel includes three excitation regions, each of which is provided with red fluorescent powder R, green fluorescent powder G, and yellow fluorescent powder Y, and the three excitation regions are arranged in a concentric circle manner.
When the dichroic filters 1 rotate to different angles respectively, incident light emitted by the light source reaches different excitation regions respectively after being reflected by the dichroic filters 1, so that the dichroic filters 1 are controlled to rotate through electromagnetic force, the deflection state of the dichroic filters 1 can be changed rapidly, and rapid switching of output of exciting light of different colors is achieved.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may for example be 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.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the system described above may refer to the corresponding process in the foregoing embodiment of the apparatus, and is not described herein again.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
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 (10)
1. A dichroic sheet galvanometer, characterized by application in optical devices;
the dichroic sheet vibrating mirror comprises a dichroic sheet and a fixed frame, and the dichroic sheet is arranged on the fixed frame through a steering mechanism;
the dichroic sheet may be rotatable relative to the mount by the steering mechanism.
2. The dichroic mirror according to claim 1, wherein the steering mechanism comprises a bogie and a spindle;
the dichroic sheet is fixedly connected with the bogie, and the bogie is connected with the fixed frame through the rotating shaft;
the bogie can rotate relative to the fixed frame through the rotating shaft.
3. The dichroic mirror according to claim 1, wherein the steering mechanism comprises a first bogie, a first spindle, a second bogie, and a second spindle;
the dichroic sheet is fixedly connected with the first bogie, the first bogie is connected with the second bogie through the first rotating shaft, the second bogie is connected with the fixing frame through the second rotating shaft, and the axial directions of the first rotating shaft and the second rotating shaft are mutually vertical;
the first bogie is rotatable relative to the second bogie by the first axle;
the second bogie can rotate relative to the fixed frame through the second rotating shaft.
4. The dichroic mirror according to claim 1, further comprising a drive assembly;
the driving component provides driving force to enable the dichroic sheet to rotate relative to the fixed frame through the steering mechanism.
5. The dichroic mirror according to claim 4, wherein the driving assembly is an electromagnetic driving assembly.
6. The dichroic mirror according to claim 5, wherein the electromagnetic drive assembly comprises a magnet and a coil;
the magnet is fixedly connected with the dichroic sheet, and the coil is fixedly connected with the fixing frame;
or the coil is fixedly connected with the dichroic sheet, and the magnet is fixedly connected with the fixing frame.
7. An optical apparatus comprising a light source, a fluorescent wheel, a reflection optical path, a transmission optical path, and the dichroic plate galvanometer according to any one of claims 1 to 6;
the light emitted by the light source forms incident light with different wavelengths after passing through the fluorescent wheel;
and the incident light with different wavelengths is reflected and transmitted by the dichroic sheet vibrating mirror in the reflection light path and the transmission light path respectively to form emergent light.
8. The optical device of claim 7, wherein the fluorescent wheel includes a third axis of rotation and a turntable rotatable about the third axis of rotation;
the rotary table is sequentially provided with a light-transmitting area and an excitation area along the circumferential direction, and the excitation area is provided with fluorescent powder with at least two colors.
9. The optical device according to claim 7, wherein the fluorescent wheel comprises at least two excitation zones, each of the excitation zones being provided with a different color phosphor, respectively;
when the dichroic filters rotate to different angles respectively, incident light emitted by the light source reaches different excitation regions respectively after being reflected by the dichroic filters.
10. The optical device of claim 7, wherein the optical device is a projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021012053.2U CN212112109U (en) | 2020-06-04 | 2020-06-04 | Dichroic sheet galvanometer and optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021012053.2U CN212112109U (en) | 2020-06-04 | 2020-06-04 | Dichroic sheet galvanometer and optical device |
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| Publication Number | Publication Date |
|---|---|
| CN212112109U true CN212112109U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021012053.2U Active CN212112109U (en) | 2020-06-04 | 2020-06-04 | Dichroic sheet galvanometer and optical device |
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|---|---|
| CN (1) | CN212112109U (en) |
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- 2020-06-04 CN CN202021012053.2U patent/CN212112109U/en active Active
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