CN114675474A

CN114675474A - Switching type micro-actuating part and micro-actuating device

Info

Publication number: CN114675474A
Application number: CN202011544314.XA
Authority: CN
Inventors: 江滔; 尹蕾
Original assignee: Chengdu Jimi Technology Co Ltd
Current assignee: Chengdu Jimi Technology Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2022-06-28
Also published as: WO2022134486A1

Abstract

The present application relates to the field of projectors, and more particularly, to a component for improving resolution in a projector, which includes: a plurality of optical path adjusting members; the number of optical path adjustment components is configured to: the technical scheme includes that the switching type micro-actuating part can break through a bottleneck of a light path adjusting mechanism in a household projector in the background technology, and pixels can be doubled or quadrupled originally and can be higher.

Description

Switching type micro-actuating part and micro-actuating device

Technical Field

The present invention relates to the field of projectors, and more particularly, to a component for improving resolution in a projector.

Background

In recent years, various image display technologies have been widely used in daily life.

In an image display device, such as a projector, an optical path adjusting mechanism may be disposed to change the traveling optical path of light in the device, so as to provide various effects, such as improving the imaging resolution and improving the image quality.

However, as in the patent application No. CN111338044A, an optical path adjusting mechanism is known, which uses the principle of magnetic induction to drive a lens, and uses the principle of refraction or reflection to shift a light beam, thereby completing the superposition of photons, improving the imaging resolution, improving the picture quality, and the like.

The magnetic induction coil part is driven by current, and changes the magnetic polarity of related parts by exchanging the direction of the current so as to complete the forward and reverse switching of the lens, finally obtain the action of repeated vibration, and the vibration of one light beam is divided into two or four light beams, and then the light beams are provided with overlapped areas so as to complete the superposition of photons.

However, the switching speed of the current direction has an upper limit, for example, the same speed is 60Hz, the frame of the traditional galvanometer 1 can be 16.18ms, wherein 1/4 time is in the switching state, and the current fastest speed can only enable the lens to complete the biaxial vibration, for example, as in the patent with the application number of CN111338044A, the pixel is twice or four times of the original pixel.

In the projector, especially the household projector, in view of the problem of product volume, the key component DMD used at present, i.e. 1K or a very small 2K resolution at most, determines the size of the basic resolution of the projector (if the projector does not have the optical path adjusting mechanism, the resolution of the final output picture of the projector is the same as the DMD resolution), the resolution is larger, the volume of the DMD is enlarged, the volume of the projector is greatly enlarged, and the DMD is not applicable in the field of household projectors at present.

The 1K or 2K resolution ratio is two times or four times that of the original pixel, the resolution ratio of 8K can be realized at most, the 2K difficulty is very high, the problem of volume and the problem of heat dissipation are caused (after the volume of the DMD is enlarged, the narrow inner space of the household projector has very high challenge on heat dissipation);

while the market demand for resolution continues to increase, existing frameworks have been unable to meet this market demand.

Therefore, the optical path adjusting mechanism in the current household projector has encountered a bottleneck, and the industry is seeking a solution to break through the bottleneck.

Disclosure of Invention

In the research and development process of the company, in order to achieve the above-mentioned object, a switching type micro-actuator is proposed, and the implementation of the scheme can break through the bottleneck of the optical path adjusting mechanism in the household projector mentioned in the background art, so that the pixels can not only be doubled or quadrupled, but also be higher.

The invention provides a switching type micro-actuating part, which comprises:

a plurality of optical path adjusting members;

the number of optical path adjustment components is configured to: the projection device can sequentially pass through a space position, change the propagation path of the same light beam at the space position to form a plurality of new light beams with different propagation paths, and at least in a projection area on one projection surface, an overlapping area which is partially covered by all the new light beams is provided.

By this way, it can control several light path adjusting components to move, make it pass the position of light beam contact in the design in turn, the light beam is no longer on the same incident plane continuously as in the prior art, and the separation of photon is carried out by changing the incident plane angle, which is the main reason of the upper limit bottleneck in the prior art, but after the scheme is changed, it can control several light path adjusting components to move, make it pass the position of light beam contact in the design in turn, no matter through the principle of reflection or refraction, and no matter through material to realize different reflectivity, refractive index, or through different installation angle to realize the control of light beam adjusting angle, when the light path adjusting components are enough, and the time passing the space position is short enough, theoretically, can realize the infinite doubling of pixels, for example when the number of light path adjusting components is 8, the number of the projection areas is 8, the overlapped areas are overlapped by 8 pictures, the pixels of the partial areas can be turned by 8 times, and the picture projected by the projector finally and seen by a user can be ensured to be the effect that the pixels are increased by 8 times by controlling the DMD to output the pictures of the overlapped areas.

Meanwhile, the light path adjusting components are arranged to sequentially pass through a spatial position, so that the motion tracks of all the light path adjusting components are always the same, repeated and in a closed loop state.

In a possible implementation manner, the plurality of optical path adjusting components are arranged annularly, and under the basic frame, the installation of the optical path adjusting components and the matching of the driving manner are easier to realize, so as to achieve the effect of sequentially passing through a space position.

In a possible implementation manner, the annular arrangement comprises a circular ring arrangement, which is easier to realize that the optical path adjusting component can pass through a space position in sequence, and the optical path adjusting component rotates around the same space straight line as an axis, such as a disk-shaped rotation, so that the volume and the space of a projector midlight machine (an installation carrier of the switching type micro-actuating part) can be better utilized, and the optimized design is facilitated.

In one possible implementation, the circular ring arrangement comprises an elliptical arrangement, one way of circular ring arrangement being that precession in rotation, moment of inertia, etc. may have an effect compared to a circular ring arrangement.

In one possible implementation, the annular arrangement comprises a square annular arrangement, one way of which is employed under certain space, component interference, vibration or heat dissipation requirements.

In a possible implementation manner, the light path adjusting component changes the light beam propagation path in a refraction manner, and in this manner, the projection surface is located on the other side of the light beam incidence surface of the light path adjusting component, so as to adapt to the setting of some light paths and match the requirements of corresponding spatial structures and the like.

In a possible implementation manner, different light path adjusting components have the same refractive index, and the refractive index is the same, so to achieve the technical effect of the present application, angles of different light path adjusting components relative to a fixed spatial plane are different, and when the light path adjusting components sequentially pass through the spatial position, the light path adjusting components pass through angles different from the light beam, so that the light beam is refracted into new light beams which are not overlapped.

In a possible implementation manner, the refractive indexes of different light path adjusting components for light with at least one wavelength are the same, the refractive indexes of the same material for light with different wavelengths are also different, and the main colors of light in the projector are red, green and blue light, namely basic color light, wherein the basic color light also has one color with a larger weight, so that the different light path adjusting components ensure that the refractive indexes for light with at least one wavelength are the same, and the effect of the overlapping area of the invention can be achieved.

In a possible implementation manner, the refractive indexes of the different optical path adjusting components for the red light, the blue light and the green light are the same, and the main colors of the light in the projector are the red light, the green light and the blue light, namely basic color light, so that the different optical path adjusting components ensure that the refractive indexes for the red light, the blue light and the green light are the same, and the effect of the overlapping area of the invention can be better realized under the condition that the angles of the different optical path adjusting components relative to a fixed space plane are the same, namely the installation states are the same.

In one possible implementation, the number of optical path adjustment components is configured to: when the light path adjusting components pass through the space position, the different light path adjusting components coincide with each other with respect to the incident plane of the same light beam, namely, when the different light path adjusting components pass through the space position, at least the incident plane positions completely coincide in space, and the purpose of writing in the situation is to allow a small spatial offset when the incident planes are different, and to allow a very small difference in the size of the light spot on the projection plane (caused by the offset of the incident planes) under the condition that the refractive indexes or the installation angles are different, but the mutual offset of the incident planes must be small enough to limit the upper limit of the influence caused by the difference in the size of the light spot caused by the offset, and the offset of the incident planes is structurally convenient for optimizing the relationship between the air flow and the light path adjusting components, and is divided in the heat dissipation treatment or the noise treatment.

In a possible implementation manner, the light path adjusting component changes the light beam propagation path in a reflection manner, and in this manner, the projection surface is located on the same side of the light beam incident surface of the light path adjusting component, so as to adapt to the setting of some light paths and match the requirements of corresponding spatial structures and the like.

In a possible implementation manner, the reflectivities of the different optical path adjusting components are the same, and the reflectivities are the same, and the percentage of the radiation energy reflected by the object to the total radiation energy is called the reflectivity, and the size of the reflectivity determines the effect after reflection in the application, and the reflectivities of the different optical path adjusting components are the same, so that the different attenuation of the new light beams can be ensured to be the same, and the final effect of pixel superposition can be ensured.

In a possible implementation manner, the reflectance of the light with at least one wavelength is the same for different light path adjusting components, and the main colors of the light in the projector are red, green and blue light, i.e. basic color light, and there is also one color with a higher weight, so that the reflectance of the light with at least one wavelength is the same for different light path adjusting components, and the effect of the overlapping area of the present invention can be achieved.

In a possible implementation manner, the reflectivities of different light path adjusting components to red light, blue light and green light are the same, and the main colors of light in the projector are red light, green light and blue light, i.e. basic color light, so that the reflectivities of different light path adjusting components to red light, blue light and green light are the same, and the effect of the overlapping area of the invention can be better realized.

In one possible implementation, the number of optical path adjustment components is configured to: on the projection surface, the projections of the adjacent light path adjusting components are continuous, and the continuous area at least comprises a light spot area of the new light beam on the projection surface, namely, in the process of adjusting the light beam, a blank period of the light spot on the projection surface is ensured, and the continuity of the picture is ensured.

In a possible implementation manner, the adjacent light path adjusting components are in smooth transition with respect to the incident surface of the same light beam, so that the continuity of contact between the light beam and the incident surface is facilitated, and meanwhile, under the condition that different light path adjusting components guarantee the overlapping region, the adjacent light path adjusting components can be completely overlapped or slightly deviated when passing through the spatial position.

In a possible implementation manner, on the projection surface, the projections of adjacent light path adjusting components are continuous, and the outer edge of the projection area formed by the projections is smooth, so that after different light path adjusting components are combined together, the outer edge is continuous, and the processing and the assembly are more convenient.

In a possible implementation manner, on the projection plane, the projections of the adjacent light path adjusting components are continuous and form a circular ring shape, and the distance between the inner diameter and the outer diameter of the circular ring can be shortened under the framework, so that the distance can be theoretically shortened to the length of the light spot diameter, and therefore higher optimization can be achieved in space.

In a possible implementation manner, the single optical path adjusting component is fan-shaped, and is convenient to process and splice into a circular ring shape.

In a possible implementation manner, the central angles of the different optical path adjusting components are the same, so that the optical path adjusting components are convenient to process and splice into a circular ring shape.

In a second aspect, the present application provides a switching microactuator comprising:

the micro-actuation portion;

and the bearing part is used for mounting the optical path adjusting component.

In a possible implementation manner, the bearing part is surrounded by the plurality of optical path adjusting components, or the bearing part is a ring-shaped piece, and the optical path adjusting components are embedded in the bearing part.

In a possible implementation manner, the bearing part is driven by the power source to rotate, and the bearing part is driven to rotate, so that the movement of the optical path adjusting component can be realized, and the optical path adjusting component sequentially passes through the spatial position according to the design requirement.

Drawings

The present application will now be described by way of example only and with reference to the accompanying drawings in which:

FIG. 1 shows a case where the number of optical path adjusting parts is 2;

FIG. 2 is a schematic view of a case where the number of optical path adjusting members is 4;

FIG. 3 is a schematic view of an embodiment in which the number of optical path adjusting members is 8;

FIG. 4 is a schematic view of a projection area under use of the arrangement of FIG. 1;

FIG. 5 is a schematic view of a projection area under use of the arrangement of FIG. 2;

FIG. 6 is a view showing a projection area in use of the arrangement when the number of the optical path adjusting members is 16;

wherein, the marks are sequentially as follows: 1-an optical path adjusting component, 2-a first bearing part and 3-a second bearing part.

Detailed Description

It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.

It will be understood that when an element or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it can be directly on, adjacent to, connected or coupled to the other elements or layers or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to" or "directly coupled to" other elements or layers, there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention.

Spatial relational terms such as "under," "below," "under," "above," "over," and the like may be used herein for convenience in describing the relationship of one element or feature to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, then elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.

The present embodiment provides a switching microactuator, which includes:

a plurality of optical path adjusting components 1, as shown in fig. 1 and 4, two optical path adjusting components 1, as shown in fig. 2 and 5, four optical path adjusting components 1, as shown in fig. 3, 8 optical path adjusting components 1, as shown in fig. 6, and 16 optical path adjusting components 1;

the number of optical path adjusting members 1 are configured to: the light beam processing device can sequentially pass through a space position, the propagation path of the same light beam is changed at the space position, a plurality of new light beams with different propagation paths are formed, at least in a projection area on one projection surface, an overlapping area which is partially covered by all the new light beams is provided, the same light beam is changed into a light beam fixed at the space position by default, and the overlapping area is not shown in figures 1-3.

By this way, it is only necessary to control several light path adjusting components 1 to move, so that the light beams do not continuously pass through the same incident plane as in the prior art in the background art, and the separation of photons is performed by changing the angle of the incident plane, which is the main reason of the prior art having the upper limit bottleneck, but after the scheme is changed, it is only necessary to control several light path adjusting components 1 to move, so that the light beams sequentially pass through the position in the design, which is contacted with the light beams, no matter through the principle of reflection or refraction, no matter through the material to realize different reflectivity and refractive index, or through different installation angles to realize the control of the light beam adjusting angle, when the light path adjusting components 1 are enough and the time passing through the spatial position is short enough, the infinite doubling of the pixels can be realized theoretically,

for example, in fig. 1, when the left optical path adjusting component 1 passes through the spatial position (it is assumed here that the light beam passing through the spatial position is on the left side in the figure and is intersecting with the left optical path adjusting component 1), the projection area generated is the D area (solid line area) in fig. 4, the entire microactuator rotates, and when the right optical path adjusting component 1 passes through the spatial position, the projection area generated is the F area (broken line area) in fig. 4, then the overlapping area is the overlapping area, and the pixels of the overlapping area are doubled.

For another example, as shown in fig. 2, when the optical path adjusting component 1 at the top left corner passes through the spatial position (it is assumed here that the light beam passing through the spatial position is at the top left corner in the figure and is crossing the optical path adjusting component 1 at the top left corner), the generated projected area is the solid line area in the small graph at time a in fig. 5, at this time, the optical path adjusting component 1 at the top left corner is marked as glass a, which can be interpreted as glass a here, but is not limited to the material being glass, and only by way of example to illustrate the implementation principle of this embodiment, the whole microactuator rotates, when the optical path adjusting component 1 at the top right corner passes through the spatial position, the generated projected area is the solid line area in the small graph at time B in fig. 5, at this time, the optical path adjusting component 1 at the top right corner is marked as glass B, the whole microactuator continues to rotate, and glass C implements time C, glass D realizes D moment, and it is seen that the four solid line areas in the scheme have a common overlapped part, pixels are overlapped four times to form the overlapped area, and the pixels in the overlapped area are four times of the original pixels.

As shown in fig. 3, the optical path adjusting members 1 are arranged in a ring-shaped configuration in a combined manner when the number thereof is 8.

For example, as shown in fig. 6, when the number of the optical path adjusting components 1 is 16, the number of the projection areas is 16, the overlapping areas are overlapped by 16 pictures, and the pixels in the overlapping areas can be turned by 16 times, and the DMD is controlled to output the pictures in the overlapping areas, so that the effect that the number of the pixels of the picture finally projected by the projector, which is seen by the user, is increased by 16 times can be ensured, and the specific implementation principle is an extension of the schemes in fig. 1 and 2;

the optical path adjusting component is formed by 16 optical path adjusting components 1, which are glass A, B-N, M, wherein the same light beam in the scheme also keeps unchanged in spatial position, the whole micro-actuating part continuously rotates, glass A, B-N, M sequentially passes through the light beam at A, B-N, M, sequentially generated projection areas are areas formed by relatively larger squares in small pictures arranged at time in figure 6, for example, the projection area of the small picture at time A is an area formed by 9 relatively larger squares, and the area formed by the corresponding relatively larger squares in the small picture at each time is the projection area generated at the time, and projection areas at 16 times in the scheme have common overlapping parts (for preventing unclear illustration, the common overlapping parts are not marked in the figures, but the common overlapping parts in the complex scheme pointed by the 16 optical path adjusting components 1 can be clearly understood according to characters), the pixels are overlapped 16 times, the common overlapped part is the overlapped area, and the pixels in the overlapped area are turned to 16 times of the original pixels.

Meanwhile, the optical path adjusting components 1 are arranged to sequentially pass through a spatial position, so that the motion trajectories of all the optical path adjusting components 1 are necessarily the same, repeated and in a closed loop state, and as the scheme of the optical path adjusting components 1 with the number of the optical path adjusting components mentioned in the embodiment, compared with the scheme of 'repeated vibration' mentioned in the prior art, the scheme can better disturb airflow, and the heat dissipation effect and the upper limit of heat dissipation are better.

In a possible implementation manner, the plurality of optical path adjusting components 1 are arranged in a ring shape, and in the schemes of fig. 1 to 6, all within the range of the ring-shaped arrangement, under this basic frame, the installation of the optical path adjusting components 1, and the cooperation with the driving manner, are easier to implement, so as to achieve the effect of "being able to pass through a space position in sequence", and at the same time, it needs to be emphasized that, in the present application, the ring-shaped arrangement not only includes a ring-shaped arrangement, but also includes a square arrangement or even other irregular ring-shaped arrangement.

In a possible implementation manner, the annular arrangement includes a circular ring arrangement, which is easier to realize "sequentially passing through a space position", and the optical path adjusting component 1 rotates around the same spatial straight line as an axis, such as a disk-shaped rotation, so that the volume and space of an optical machine (a mounting carrier of a switching micro actuator) in the projector can be better utilized, and the design is optimized, and the schemes shown in fig. 1 to 6 are all within the range of the annular arrangement.

In a possible implementation, the circular ring arrangement comprises an elliptical arrangement, a manner of circular ring arrangement that has an influence on precession during rotation, moment of inertia, etc. as compared to a circular ring arrangement, which is not illustrated in the figures of the present embodiment, but which does not exclude this embodiment, which is also within the scope of the circular ring arrangement.

In a possible implementation, the annular arrangement comprises a square annular arrangement, one of which is adopted under certain space, component interference, vibration or heat dissipation requirements, not illustrated in the figures of the present example, without excluding this embodiment, which is also within the scope of the annular arrangement.

In a possible implementation manner, the light path adjusting component 1 changes the light beam propagation path by refraction, and in this manner, the projection surface is located on the other side of the light beam incident surface of the light path adjusting component 1, so as to adapt to the setting of some light paths and match the requirements of corresponding spatial structures and the like.

In a possible implementation manner, different light path adjusting components 1 have the same refractive index, and the refractive index is the same, that is to achieve the technical effect of the present application, angles of different light path adjusting components 1 with respect to a fixed spatial plane are different, and when passing through the spatial position in sequence, the light beams are refracted into new light beams which are not overlapped, which is the case in the solutions of fig. 1 to 6, a plurality of light path adjusting components 1 (which may be lenses or glass sheets) having the same refractive index are used, and because of the same refractive index, but different refraction effects are generated, the installation angles of each light path adjusting component 1 have a slight difference.

In a possible implementation manner, the refractive indexes of different light path adjusting components 1 for light with at least one wavelength are the same, the refractive indexes of the same material for light with different wavelengths are also different, and the main colors of light in the projector are red, green and blue light, namely basic color light, wherein the basic color light also has a color with a larger weight, so that the refractive indexes of different light path adjusting components 1 for light with at least one wavelength are the same, and the effect of the overlapping area of the invention can be achieved.

In a possible implementation manner, the refractive indexes of the different optical path adjusting components 1 for red light, blue light and green light are the same, and the main colors of light in the projector are red light, green light and blue light, that is, basic color light, so that the refractive indexes of the different optical path adjusting components 1 for red light, blue light and green light are the same, and the effect of the overlapping area of the present invention can be better realized under the condition that the angles of the different optical path adjusting components 1 relative to a fixed spatial plane are the same, that is, the installation states are the same.

In one possible implementation, the number of optical path adjusting components 1 is configured to: when passing through the space position, the different light path adjusting components 1 coincide with each other with respect to the incident plane of the same light beam, that is, when the different light path adjusting components 1 pass through the space position, at least the incident plane positions are completely coincident in space, and the purpose of writing this case is to allow a spatial slight misalignment when the incident planes are different, and to allow a very slight difference in the size of the light spot on the projection plane (caused by the misalignment of the incident planes) when the refractive indexes or the installation angles are different, but it is necessary that the mutual misalignment of the incident planes is sufficiently small to limit the upper limit of the influence caused by the difference in the size of the light spot caused by the misalignment, and the misalignment of the incident planes is structurally convenient to optimize the relationship between the air flow and the light path adjusting components 1, and is divided into heat dissipation treatment or noise treatment, and the diagram of the scheme is not shown in the figure of the present application, however, this method is not excluded and is within the scope of the present application, that is, all the light path adjusting components 1 have the same installation angle with respect to the central axis, and the slight difference in refractive index is derived from the slight difference in material, and may be realized by changing the composition or composition ratio of the material of the light path adjusting component 1 itself, or by adding a coating or plating layer on the surface of the light path adjusting component 1, or by one or more processing steps (for the processing step, for example, more quenching or other processing steps are performed).

In a possible implementation manner, the light path adjusting component 1 changes the light beam propagation path to be reflection, and in this manner, the projection surface is located on the same side of the light beam incident surface of the light path adjusting component 1, so as to adapt to the setting of some light paths and match the requirements of corresponding spatial structures, and the like.

In a possible implementation manner, the reflectivities of the different optical path adjusting components 1 are the same, and the reflectivities are the same, and the percentage of the radiation energy reflected by the object to the total radiation energy is called as the reflectivity, and the size of the reflectivity determines the effect after reflection in the application, and the reflectivities of the different optical path adjusting components 1 are the same, so that the different attenuation of the new light beams can be ensured to be the same, and the final effect of pixel superposition can be ensured.

In a possible implementation manner, the reflectance of the different light path adjusting components 1 to the light with at least one wavelength is the same, and the main colors of the light in the projector are red, green and blue light, i.e. basic color light, and there is also one color with a higher weight, so that the different light path adjusting components 1 ensure the same reflectance to the light with at least one wavelength, and the effect of the overlapping region of the present invention can be achieved.

In a possible implementation manner, the reflectivities of the different optical path adjusting components 1 for the red light, the blue light, and the green light are the same, and the main colors of the light in the projector are the red light, the green light, and the blue light, that is, basic color light, so that the different optical path adjusting components 1 ensure that the reflectivities for the red light, the blue light, and the green light are the same, and the effect of the overlapping area of the present invention can be better achieved, of course, the higher the reflectivity is, the smaller the energy loss of the light beam is, and the heating condition of the optical path adjusting components 1 can be reduced.

In one possible implementation, the number of optical path adjusting components 1 is configured to: on the projection surface, the projections of the adjacent light path adjusting components 1 are continuous, and the continuous area at least includes the light spot area of the new light beam on the projection surface, that is, it is ensured that in the process of adjusting the light beam, the light spot on the projection surface does not have blank period, and the continuity of the picture is ensured, although in general, the user experience on naked eyes cannot be distinguished, especially under the condition that the frequency of the light path adjusting components 1 passing through the space position is relatively fast, in order to pursue the perfect effect, especially when the number of the played picture frames is relatively high and there is an object moving rapidly in the picture, if the light spot on the projection surface has blank period, the user experience is affected.

In a possible implementation manner, the incident surfaces of the adjacent light path adjusting components 1 for the same light beam are in smooth transition, so that the continuity of the contact between the light beam and the incident surface is facilitated, and in the case that different light path adjusting components 1 ensure the overlapping region, the adjacent light path adjusting components 1 can be completely overlapped or do not deviate greatly when passing through the spatial position, in this case, the continuity of the incident surfaces can ensure that when the light beam passes through between two incident surfaces, no stray light is generated due to a gap or a non-smooth surface, and this solution is also more friendly to the joining process of different light path adjusting components 1, and can be obtained by integral molding, which is reflected in the embodiment of the present application, namely, including the position a in fig. 1, the position B in fig. 2, and the position C in fig. 3 disclosed in fig. 1-3, as is more apparent from fig. 1 and 3, the adjacent light path adjusting components 1 are not provided with a gap, and are directly connected, and in the case of fig. 1-3, the side surfaces of the light path adjusting components 1 are right-angled surfaces, so that the axes of the same light beam are superposed in the right-angled surfaces at a certain moment when the light path adjusting components 1 move, the projection areas of the two adjacent moments on the projection surface can be completely converted, no additional third projection area is generated in the conversion process, and the effect on the final superposed picture is kept optimal.

In a possible implementation manner, on the projection surface, the projections of the adjacent light path adjusting components 1 are continuous and the outer edges of the projection areas formed by the projections are smooth, so that after the different light path adjusting components 1 are combined together, the outer edges are continuous, and the processing and the assembly are more convenient.

In a possible implementation manner, on the projection plane, the projections of the adjacent light path adjusting components 1 are continuous and form a circular ring shape, that is, as in the case of fig. 1-3, the distance between the inner diameter and the outer diameter of the circular ring can be shortened, and theoretically, the distance can be shortened to the length of the spot diameter, so that higher optimization can be obtained in space.

In a possible implementation, the single optical path adjustment member 1 is fan-shaped, which is easy to machine and splice into a circular ring shape, as in the case of fig. 1-3.

In a possible implementation, the central angles of the different optical path adjusting components 1 are the same, which facilitates processing and splicing into a circular ring shape, as is the case in fig. 1-3.

the micro-actuation portion;

and a bearing part on which the optical path adjusting member 1 is mounted.

In one possible implementation form of the method,

the bearing part is surrounded by the plurality of optical path adjusting components 1, or the bearing part is a ring-shaped piece, and the optical path adjusting components 1 are embedded in the bearing part.

In a possible implementation manner, the bearing part is driven by a power source to rotate, and the bearing part is driven to rotate, so that the movement of the optical path adjusting component 1 can be realized, and the optical path adjusting component sequentially passes through the spatial positions according to the design requirement.

In the embodiment of the present application, the bearing portion is divided into an inner ring and an outer ring, that is, an inner ring structure bearing portion one 2 and an outer ring structure bearing portion two 3 in fig. 1-3, when the optical path adjusting component 1 (in the present application, a lens shape) is installed, the bearing portion one 2 is connected to the short arc surface of the fan-shaped optical path adjusting component 1 by a bonding manner (or other manners such as welding), the bearing portion two 3 is connected to the long arc surface of the fan-shaped optical path adjusting component 1, the bearing portion one 2 and the bearing portion one 2 are both circular ring structures, and the power transmission of the power source can be achieved by various manners including but not limited to: a gear driving mode, a magnetic induction driving mode and an electrostatic force driving mode;

for example, when a gear driving mode is adopted, teeth can be arranged on the outer ring of the bearing part I3 and are matched with a motor to drive, and the bearing part I2 is arranged on a rotating shaft;

for example, when a magnetic induction driving mode is adopted, the property of polarity interval of N S on the bearing part I2 and/or the bearing part II 3 can be given, and the magnetic induction driving mode is driven by a separate magnetic component with adjustable magnetism;

the driving method includes various driving methods, including a public driving method in the field of mechanical structures, which are not illustrated in the embodiment.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A switched microactuator comprising:

a plurality of optical path adjusting members;

2. The switchable microactuator of claim 1 wherein the plurality of optical path adjustment members are arranged in a ring.

3. The switchable microactuator of claim 2 wherein the circular array comprises a circular array.

4. The switchable microactuator of claim 3 wherein the circular ring arrangement comprises an elliptical arrangement.

5. The switching microactuator of claim 2 wherein the circular arrangement comprises a square circular arrangement.

6. The switchable microactuator of any of claims 1-5 wherein the optical path adjustment member changes the path of travel of the light beam by refraction.

7. The switchable microactuator of claim 6 wherein the refractive indices of the different optical path adjustment members are the same.

8. The switchable microactuator of claim 6 wherein the refractive indices of different ones of the optical path adjusting members for light of at least one wavelength are the same.

9. The switching microactuator of claim 8 wherein the refractive indices of different ones of the optical path adjusting members for red, blue and green light are the same.

10. The switched microactuator of claim 6 wherein said plurality of optical path adjustment members are configured to: when the light path adjusting member passes through the spatial position, the incident surfaces of the different light path adjusting members to the same light beam are overlapped with each other.

11. The switching microactuator of any of claims 1-5 wherein the optical path adjustment member changes the path of travel of the light beam to reflection.

12. The switchable microactuator of claim 11 wherein the different optical path adjustment members have the same reflectivity.

13. The switchable microactuator of claim 11 wherein the reflectivities of different ones of the optical path adjusting members are the same for light of at least one wavelength.

14. The switching microactuator of claim 13 wherein the reflectivities of different ones of the optical path adjusting members for red, blue and green light are the same.

15. The switched microactuator of claim 6 wherein said plurality of optical path adjustment members are configured to: on the projection surface, the projection of the adjacent light path adjusting component is continuous, and the continuous area at least comprises a spot area of the new light beam on the projection surface.

16. The switchable microactuator of claim 15 wherein the incident surfaces of adjacent ones of the optical path adjustment members for the same light beam are in smooth transition.

17. The switchable microactuator of claim 15 wherein the projection area on the projection surface formed by the projection of adjacent optical path adjustment members is smooth.

18. The switchable microactuator of claim 17 wherein the projections of adjacent optical path adjustment members on the projection surface are continuous and form an annular shape.

19. The switching microactuator of claim 6 wherein a single one of the optical path adjustment members is fan-shaped.

20. The switchable microactuator of claim 19 wherein the central angles of the different optical path adjustment members are all the same.

21. A switched microactuator comprising:

the microactuator of any one of claims 1-20;

and the bearing part is used for mounting the optical path adjusting component.

22. The switching microactuator of claim 21 wherein the carrier portion is surrounded by the plurality of optical path adjustment members or the carrier portion is an annular member in which the optical path adjustment members are embedded.

23. The switchable microactuator of claim 22 wherein the carrier is rotationally driven by a power source.