Projection system
By designing reflection modules and drive modules in the projection system, the different proportions and shapes of the projected images are realized, which solves the problem that the existing system cannot meet the diverse usage scenarios, and improves the applicability and user experience of the system.
Patent Information
- Application Number
- CN202421477804.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-26
AI Technical Summary
It is difficult for existing projection systems to divide images to be projected in different proportions or shapes, resulting in the inability to meet users' viewing needs in different usage scenarios.
A projection system is designed, including a light source module, a spatial light modulation module, a projection lens and a reflection module. The projected light beam is divided by at least two reflective elements in the reflection module, and the position and angle of the reflective elements are adjusted by the driving module to achieve projected pictures of different proportions and shapes.
It realizes the segmentation of images to be projected in different proportions or shapes without increasing the complexity and cost of the projection system, which improves the applicability and user experience of the projection system.
Smart Images
Figure CN222866998U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a projection system, in particular to a projection system for segmenting an image to be projected. Background Art
[0002] In the projection system, the segmentation of the projected image has a wide range of application value. Specifically, an image to be projected can be divided into two parts and projected onto two projection areas at different positions to meet the viewing needs of users in specific scenarios. For example, in an exhibition, patterns can be projected onto blank exhibits, and text introductions can be projected onto the walls near the exhibits. The pattern and the text introduction actually come from the same image to be projected, which is conducive to the synchronous change of the text introductions corresponding to different patterns when switching between different patterns.
[0003] However, in the prior art, the projection device that can divide the image to be projected has a relatively fixed ratio and shape of the divided images. When the projection device is used in a different scene, the ratio or shape of the divided images may no longer be applicable. Therefore, how to make the projection device divide the image to be projected into different ratios or shapes without making the projection system too complicated has become a new research topic. Utility Model Content
[0004] The utility model aims to provide a projection system and a projection device thereof, so as to segment images to be projected of different proportions and shapes.
[0005] In order to achieve the above object, the utility model provides a projection system, comprising:
[0006] A light source module provides at least one color of light;
[0007] A spatial light modulation module is arranged on the light output path of the light source module and is used to modulate the at least one color light to form a projection light beam;
[0008] A projection lens, used for receiving the projection light beam and projecting it along an initial direction; and
[0009] The reflection module includes a first reflection element and a second reflection element, wherein the first reflection element and the second reflection element are distributed along the initial direction, and the first reflection element is located between the projection lens and the second reflection element, the first reflection element reflects at least a portion of the projection light beam to reflect the first projection image in the first direction, and the second reflection element is used to reflect the remaining portion of the projection light beam to reflect the second projection image in the second direction.
[0010] Preferably, it further comprises a driving module, coupled to the reflection module, for driving the reflection module to move, so as to adjust the ratio and / or shape of the first projection picture and the second projection picture;
[0011] The driving module drives the reflective module to move, specifically including: driving the first reflective element or the second reflective element to rotate, and / or driving the first reflective element or the second reflective element to move relative to the initial direction.
[0012] Further preferably, the driving module drives the reflection module to move, specifically including: driving the first reflection element to rotate within a range where the angle between its normal and the initial direction is less than 90 degrees; and driving the second reflection element to rotate within a range where the angle between its normal and the initial direction is less than 90 degrees.
[0013] Further preferably, the driving module includes two first driving components, and are respectively coupled to the first reflecting element and the second reflecting element;
[0014] The two first driving members are respectively used to drive the first reflecting element and the second reflecting element to rotate; wherein the first reflecting element rotates around a first rotation axis, and the direction of the first rotation axis is perpendicular to the normal direction of the first reflecting element; the second reflecting element rotates around a second rotation axis, and the direction of the second rotation axis is perpendicular to the normal direction of the second reflecting element.
[0015] Further preferably, the driving module further comprises two second driving members, and are respectively coupled to the first reflecting element and the second reflecting element;
[0016] The two second driving members are respectively used to drive the first reflecting element and the second reflecting element to rotate; wherein, the first reflecting element rotates around a third rotation axis, the direction of the second rotation axis is perpendicular to the normal of the first reflecting element, and the direction of the third rotation axis is different from that of the first rotation axis; the second reflecting element rotates around a fourth rotation axis, the direction of the fourth rotation axis is perpendicular to the normal of the second reflecting element, and the direction of the fourth rotation axis is different from that of the second rotation axis.
[0017] Further preferably, the first rotation axis is parallel to the second rotation axis; and the third rotation axis is parallel to the fourth rotation axis.
[0018] Further preferably, the driving module includes two third driving components, and are respectively coupled to the first reflecting element and the second reflecting element;
[0019] The two third driving members are respectively used to drive the first reflecting element and the second reflecting element to rotate; wherein the first reflecting element rotates around a fifth rotation axis, and the direction of the fifth rotation axis is parallel to the normal of the first reflecting element; the second reflecting element rotates around a sixth rotation axis, and the direction of the sixth rotation axis is parallel to the normal of the second reflecting element.
[0020] Further preferably, the driving module further includes a fourth driving component, which is coupled to the reflection module and is used to drive each of the reflection elements to move relative to the initial direction.
[0021] Preferably, the first reflective element is a plane reflector or a curved reflector; and the second reflective element is a plane reflector or a curved reflector.
[0022] Preferably, the spatial light modulation module further divides the display area of the projection light beam to correspondingly generate the first projection picture and the second projection picture which are independent of each other;
[0023] Wherein, the projection system includes one or more spatial light modulation modules; and / or, the spatial light modulation module is a digital micromirror element or a liquid crystal panel.
[0024] Compared with the prior art, the projection system provided by the utility model includes a light source module, a spatial light modulation module, a projection lens and a reflection module. The light source module provides at least one color light, and the spatial light modulation module is arranged on the light output path of the light source module, and is used to modulate the at least one color light to form a projection light beam. The projection lens is used to receive the projection light beam and project it along the initial direction. The reflection module includes at least two reflection elements, each of which reflects at least part of the projection light beam to reflect the corresponding projection picture in different directions. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 is a device block diagram of a projection system in one embodiment of the utility model;
[0026] Figure 2 A schematic diagram of segmenting an image to be projected in one embodiment of the utility model;
[0027] Figure 3 It is a schematic diagram of the structure in which a reflective element rotates through multiple rotation axes in one embodiment of the utility model;
[0028] Figure 4 It is a schematic diagram of dividing the images to be projected into different proportions or shapes in one embodiment of the utility model. DETAILED DESCRIPTION
[0029] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the present invention is described in detail below with reference to the embodiments.
[0030] Certain words are used in the specification and claims to refer to specific components. Those with ordinary knowledge in the field should understand that manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but rather use differences in components' functions as the criteria for distinction. The term "including" mentioned throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to".
[0031] See also Figure 1 , is a device block diagram of a projection system in an embodiment of the present invention. The projection system 100 provided by the present invention for segmenting an image to be projected includes a light source module 10, a spatial light modulation module 11, a projection lens 12, and a reflection module 13. The light source module 10 is used to provide at least one color light, and the light source module 10 may include a light guide lens group, which is arranged on the light output path of the light source module 10; the light source module 10 may also include at least one light source, which is arranged at a position corresponding to the light guide lens group to emit at least one color light to the light guide lens group. The light source is, for example, a light emitting diode light source or a laser light source, but the actual application is not limited thereto. The spatial light modulation module 11 is arranged on the light output path of the light source module 10, and is used to modulate the at least one color light to form a projection beam. Preferably, the projection system 100 includes one or more spatial light modulation modules 11, and the spatial light modulation module 11 is, for example, a digital micromirror device (DMD) or a liquid crystal display panel (LCD Panel), but the actual application is not limited thereto. The projection beam is then received by the projection lens 12 for image projection. That is to say, the projection system 100 for dividing the image to be projected can further divide the image to be projected into multiple sub-images, and the multiple sub-images are then projected onto multiple different projection areas to achieve the division of the image to be projected.
[0032] Specifically, the projection lens 12 is disposed in a single-piece configuration on the propagation path of the projection beam, and is used to receive the projection beam and project it along an initial direction. The reflection module 13 includes a first reflection element 131 and a second reflection element 131', such as Figure 2As shown, the first reflective element 131 and the second reflective element 131′ are distributed along the initial direction relative to the projection lens 12, and the first reflective element 131 is located between the projection lens 12 and the second reflective element 131′. The first reflective element 131 reflects at least part of the projection light beam to reflect the first projection picture D1 in the first direction, and the second reflective element 131′ is used to reflect the remaining part of the projection light beam to reflect the second projection picture D2 in the second direction. It should be noted that this embodiment takes the first reflective element 131 and the second reflective element 131′ as an example, that is, the number of reflective elements is two. In other embodiments, the number of reflective elements can also be three or more, and those skilled in the art can determine according to actual applications. In the present embodiment, at least a portion of the image reflected by the first reflective element 131 and the second reflective element 131′ is superimposed to form the complete image to be projected by the projection lens 12, that is, the complete image to be projected is a full-screen picture pattern, which is divided into a first projection picture D1 and a second projection picture D2 by the first reflective element 131 and the second reflective element 131′. Preferably, the spatial light modulation module 11 also adaptively divides the display area of the projection light beam to correspondingly generate independent first projection pictures D1 and second projection pictures D2. In other embodiments, part of the image to be projected may not be reflected by any of the reflective elements 131, 131′. For example, the above-mentioned unreflected part of the image may be a blank part of the image to be projected, or the first projection picture D1 and the second projection picture D2 may also be icons (combinations) formed by masks, for example, as Figure 2 As shown, the first projection screen D1 and the second projection screen D2 are respectively a football D1 and a head portrait D2 for interaction; or, there is an overlapping portion between the two images reflected by the first reflective element 131 and the second reflective element 131′; however, the actual application is not limited thereto. In the present embodiment, the projection system 100 further includes a driving module 14, which is coupled to the reflective module 13 and is used to drive the reflective module 13 to move so as to adjust the proportion and / or shape of the first projection screen D1 and the second projection screen D2. In the present embodiment, the driving module 14 drives the reflective module 13 to move, specifically to drive the first reflective element 131 or the second reflective element 131′ to rotate, and / or to drive the first reflective element 131 or the second reflective element 131′ to move relative to the initial direction. By rotating and / or moving the first reflecting element 131 or the second reflecting element 131′, the proportion or shape of at least a portion of the projection light beam correspondingly reflected by the first reflecting element 131 and the second reflecting element 131′ is changed, and then the projection position of the first projection screen D1 or the second projection screen D2 is adjusted accordingly, so that the projection system 100 can divide sub-images with various proportions or shapes according to actual needs, and the application of the projection system 100 has stronger universality.
[0033] In a preferred embodiment, the first reflective element 131 and / or the second reflective element 131′ is a curved reflector 131 / 131′. Thus, taking the first reflective element 131 as a curved reflector 131 as an example, the curved reflector 131 can correct the image on the curved projection surface. When the curved reflector 131 rotates relative to the initial direction, the sub-image reflected by the curved reflector 131 will not be deformed due to the change in the relative angle between the curved reflector 131 and the optical axis of the projection lens 12. That is, when the proportion or shape of the sub-image viewed by the user changes, the shape of the outer contour of the sub-image can remain regular, thereby ensuring the display effect of the projection image and improving the viewing experience of the user. In other embodiments, the first reflective element 131 and / or the second reflective element 131′ can also be a plane reflector 131 / 131′, but the actual application is not limited thereto.
[0034] In a preferred embodiment, if Figure 3As shown, the driving module 14 includes at least two first driving members 141, that is, the number of the first driving members 141 corresponds to the number of the reflective elements. In this embodiment, the number of the first driving members 141 is two, and the two first driving members 141 are respectively coupled to the first reflective element 131 and the second reflective element 131', and the two first driving members 141 are respectively used to drive the first reflective element 131 and the second reflective element 131' to rotate. Among them, the first reflective element 131 rotates around the first rotation axis 141a, and the direction of the first rotation axis 141a is perpendicular to the normal direction of the first reflective element 131; the second reflective element 131' rotates around the second rotation axis 141b, and the direction of the second rotation axis 141b is perpendicular to the normal direction of the second reflective element 131'. Taking the first reflective element 131 as an example, in some embodiments, the first rotation axis 141a can pass through the optical center of the first reflective element 131. At this time, the first reflective element 131 rotates around the first rotation axis 141a to adjust the cutting ratio of the first projection screen D1; in other embodiments, the first rotation axis 141a can also be set at the edge of the first reflective element 131. When the first reflective element 131 rotates around the first rotation axis 141a, only the first direction of the first projection screen D1 is adjusted without affecting the cutting ratio of the first projection screen D1; however, the actual application is not limited to this. In this way, by driving the first reflective element 131 or the second reflective element 131′ to rotate by the first driving member 141, the angle between the normal of the first reflective element 131 and the initial direction can be changed, or the angle between the normal of the second reflective element 131′ and the optical axis of the projection lens 12 can be changed, thereby adjusting the division ratio or projection direction of the projection screen. Preferably, each reflective element rotates within a range where the angle between its normal and the initial direction is less than 90 degrees. In other words, the first reflective element 131 rotates within a range where the angle between its direction and the initial direction is less than 90 degrees, and the second reflective element 131′ rotates within a range where the angle between its direction and the initial direction is less than 90 degrees.
[0035] Furthermore, if Figure 3As shown, the driving module 14 further includes at least two second driving members 142, that is, the number of the second driving members 142 also corresponds to the number of the reflective elements. In the present embodiment, the number of the second driving members 142 is two, and the two second driving members 142 are respectively coupled to the first reflective element 131 and the second reflective element 131′, and the two second driving members 142 are respectively used to drive the first reflective element 131 and the second reflective element 131′ to rotate. Among them, the first reflective element 131 rotates around the third rotation axis 142a, the direction of the third rotation axis 142a is perpendicular to the normal direction of the first reflective element 131, and the direction of the third rotation axis 142 is different from that of the first rotation axis 141; the second reflective element 131′ rotates around the fourth rotation axis 142b, the direction of the fourth rotation axis 142b is perpendicular to the normal direction of the second reflective element 131′, and the direction of the fourth rotation axis 142b is different from that of the second rotation axis 141b. In this way, each reflective element can achieve a wider range of rotation under the condition of rotating around two rotation axes in different directions, so that the divided sub-images can be projected onto a larger projection area. Taking the first reflective element 131 as an example, the third rotation axis 142a can pass through the optical center of the first reflective element 131, or can be set at the edge of the first reflective element 131, which is similar to the first rotation axis 141a described above and will not be repeated here. In some preferred embodiments, the first rotation axis 141a is parallel to the second rotation axis 141b; and the third rotation axis 142a is parallel to the fourth rotation axis 142b. In other embodiments, such as Figure 3 As shown, the first rotation axis 141a and the third rotation axis 142a of the first reflective element 131 are taken as examples. The third rotation axis 142a is perpendicular to the direction of the first rotation axis 141a. However, the actual application is not limited thereto.
[0036] In a preferred embodiment, if Figure 3As shown, the driving module 14 includes at least two third driving members 143, that is, the number of the third driving members 143 corresponds to the number of the reflective elements. In the present embodiment, the number of the third driving members 143 is two, and the two third driving members 143 are respectively coupled to the first reflective element 131 and the second reflective element 131′, and the two third driving members 143 are respectively used to drive the first reflective element 131 and the second reflective element 131′ to rotate. Among them, the first reflective element 131 rotates around the fifth rotation axis 143a, and the direction of the fifth rotation axis 143a is parallel to the normal direction of the first reflective element 131; the second reflective element 131′ rotates around the sixth rotation axis 143b, and the direction of the sixth rotation axis 143b is parallel to the normal direction of the second reflective element 131′. Taking the first reflective element 131 as an example, the fifth rotation axis 143a passes through the optical center of the first reflective element 131, but the actual application is not limited to this. In this way, the third driving member 143 can drive each reflective element to rotate with its normal as the axis. Please refer to Figure 4 In (a), (c) and (d), the two reflective elements can divide the entire image to be projected into a first projection screen D1 and a second projection screen D2 along the horizontal direction ( Figure 4 (a)); The first projection screen D1 and the second projection screen D2 correspond to the first reflective element 131 and the second reflective element 131' respectively, and both are rotated 90 degrees with their normal directions as axes, so that the entire image to be projected can be re-split into a new first projection screen D1 and a new second projection screen D2 along the longitudinal direction ( Figure 4 (c)), thereby changing the shapes of the first projection screen D1 and the second projection screen D2; the first reflective element 131 and the second reflective element 131' can also rotate at any angle with their normals as axes, so that the entire image to be projected can be divided into the first projection screen D1 and the second projection screen D2 with irregular quadrilateral outer contours ( Figure 4 (d)), wherein the regular quadrilateral generally refers to a rectangle, a square, etc. This makes the segmentation method of the image to be projected more diverse, making the application of the projection system 100 more universal.
[0037] Based on the above, the projection system 100 does not need to add other optical elements, and can segment the images to be projected of different proportions or shapes while avoiding the optical path structure of the projection system 100 being too complicated and increasing the cost. It should be noted that the driving member that drives each reflective element to rotate as described above is, for example, a structure that is pivotally connected to each reflective element and then driven to rotate by a driving motor. Those skilled in the art can design and configure the driving module 14 according to actual needs, but the actual application is not limited thereto.
[0038] In a preferred embodiment, the driving module 14 further includes a fourth driving member 144. In the present embodiment, the driving module 14 has at least two fourth driving members 144, that is, the number of the fourth driving members 144 corresponds to the number of the reflective elements. In the present embodiment, the number of the fourth driving members 144 is two, and they are respectively coupled to the first reflective element 131 and the second reflective element 131′, and are used to respectively drive the first reflective element 131 or the second reflective element 131′ to move relative to an initial direction; in other embodiments, the reflective module 13 may also include a base, and all the reflective elements are rotatably pivotally connected to the base, and the driving module 14 has a fourth driving member 144, and the fourth driving member 144 is coupled to the base to drive the overall movement of the reflective module 13; however, the actual application is not limited thereto. Figure 4 (a) and Figure 4 As shown in (b), by driving each reflective element to move by the fourth drive member 144, the area ratio of the first projection screen D1 and the second projection screen D2 can be changed, and the degree of freedom of the image segmentation to be projected can be further improved. It should be noted that the transmission member 144 is, for example, a retractable structure driven by hydraulic pressure, pneumatic pressure or a stepper motor. Those skilled in the art can design and configure the drive module 14 according to actual needs, but the practical application is not limited to this. In addition, at least part of the fourth drive member 144 can also be integrated into one, or there is a linkage relationship. For example, two fourth drive members 144 can be linked to adjust at the same time; for example, the number of reflective elements is multiple, and when some of the fourth drive members 144 have adjusted the relative positions of the first reflective element 131 and the second reflective element 131', the adjustable range of the remaining fourth drive members 144 is limited to avoid collision and other faults between two of the reflective elements.
[0039] In summary, the projection system provided by the utility model includes a light source module, a spatial light modulation module, a projection lens and a reflection module. The light source module provides at least one color light, and the spatial light modulation module is arranged on the light output path of the light source module, and is used to modulate the at least one color light to form a projection light beam. The projection lens is used to receive the projection light beam and project it along the initial direction. The reflection module includes at least two reflection elements, each of which reflects at least part of the projection light beam to reflect the corresponding projection picture in different directions.
[0040] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any changes and modifications made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.
Claims
1. A projection system, characterized in that: The projection system includes: A light source module provides at least one color of light; A spatial light modulation module is arranged on the light output path of the light source module and is used to modulate the at least one color light to form a projection light beam; A projection lens, used for receiving the projection light beam and projecting it along an initial direction; as well as The reflection module includes a first reflection element and a second reflection element, wherein the first reflection element and the second reflection element are distributed along the initial direction, and the first reflection element is located between the projection lens and the second reflection element, the first reflection element reflects at least a portion of the projection light beam to reflect the first projection image in the first direction, and the second reflection element is used to reflect the remaining portion of the projection light beam to reflect the second projection image in the second direction.
2. The projection system according to claim 1, characterized in that: Also includes: A driving module, coupled to the reflection module, for driving the reflection module to move so as to adjust the ratio and / or shape of the first projection image and the second projection image; The driving module drives the reflective module to move, specifically including: driving the first reflective element or the second reflective element to rotate, and / or driving the first reflective element or the second reflective element to move relative to the initial direction.
3. The projection system according to claim 2, characterized in that: The driving module drives the reflection module to move, specifically including: driving the first reflection element to rotate within a range where the angle between its normal and the initial direction is less than 90 degrees; and driving the second reflection element to rotate within a range where the angle between its normal and the initial direction is less than 90 degrees.
4. The projection system according to claim 2, characterized in that: The driving module includes two first driving components, which are respectively coupled to the first reflecting element and the second reflecting element; The two first driving members are respectively used to drive the first reflecting element and the second reflecting element to rotate; wherein the first reflecting element rotates around a first rotation axis, and the direction of the first rotation axis is perpendicular to the normal direction of the first reflecting element; the second reflecting element rotates around a second rotation axis, and the direction of the second rotation axis is perpendicular to the normal direction of the second reflecting element.
5. The projection system according to claim 4, characterized in that: The driving module further includes two second driving components, which are respectively coupled to the first reflecting element and the second reflecting element; The two second driving members are respectively used to drive the first reflecting element and the second reflecting element to rotate; wherein, the first reflecting element rotates around a third rotation axis, the direction of the second rotation axis is perpendicular to the normal of the first reflecting element, and the direction of the third rotation axis is different from that of the first rotation axis; the second reflecting element rotates around a fourth rotation axis, the direction of the fourth rotation axis is perpendicular to the normal of the second reflecting element, and the direction of the fourth rotation axis is different from that of the second rotation axis.
6. The projection system according to claim 5, characterized in that: The first rotation axis is parallel to the second rotation axis; and the third rotation axis is parallel to the fourth rotation axis.
7. The projection system according to claim 2, characterized in that: The driving module includes two third driving components, which are respectively coupled to the first reflecting element and the second reflecting element; The two third driving members are respectively used to drive the first reflecting element and the second reflecting element to rotate; wherein the first reflecting element rotates around a fifth rotation axis, and the direction of the fifth rotation axis is parallel to the normal of the first reflecting element; the second reflecting element rotates around a sixth rotation axis, and the direction of the sixth rotation axis is parallel to the normal of the second reflecting element.
8. The projection system according to claim 2, characterized in that: The driving module further includes a fourth driving component, which is coupled to the reflection module and is used to drive each of the reflection elements to move relative to the initial direction.
9. The projection system according to claim 1, characterized in that: The first reflective element is a plane reflective mirror or a curved reflective mirror; the second reflective element is a plane reflective mirror or a curved reflective mirror.
10. The projection system according to claim 1, characterized in that: The spatial light modulation module also divides the display area of the projection light beam to correspondingly generate the first projection picture and the second projection picture which are independent of each other; Wherein, the projection system includes one or more spatial light modulation modules; and / or, the spatial light modulation module is a digital micromirror element or a liquid crystal panel.