CN211318878U - Optical module and projection device - Google Patents
Optical module and projection device Download PDFInfo
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- CN211318878U CN211318878U CN202020152381.6U CN202020152381U CN211318878U CN 211318878 U CN211318878 U CN 211318878U CN 202020152381 U CN202020152381 U CN 202020152381U CN 211318878 U CN211318878 U CN 211318878U
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Abstract
The utility model provides an optical module and projection arrangement. The optical module comprises a base, a first frame body, an optical element and at least one first driving component. The first frame is disposed in the base and has a first body and a pair of first shaft portions, wherein the first shaft portions extend outward from the first body, and the first body has a pair of first inner folded edges. The optical element is disposed between the pair of first inner flaps. The first driving assembly and the optical element are respectively supported on two opposite sides of one of the first inner folding edges and used for driving the first body to swing relative to the base by taking the first shaft part as a rotating shaft. The utility model discloses an optical module has less whole volume, and uses this optical module's projection arrangement noise when can effectively reducing the operation.
Description
Technical Field
The present invention relates to an optical module and a projection apparatus, and more particularly to an optical module capable of adjusting a deflection angle of an optical element and a projection apparatus using the same.
Background
Volume is an important indicator when designing optical modules. The small volume of the optical module can save space of the optical device. In addition, a larger volume corresponds to a larger moment of inertia, and therefore, a larger thrust is required to achieve a target swing speed, and a larger volume generates a larger noise when operating. Therefore, the design of the optical module is one of the design goals to reduce the volume as much as possible.
The background section is provided only to aid in understanding the present invention, and thus the disclosure in the background section may include some prior art that does not constitute a part of the common general knowledge of a person of ordinary skill in the art. The disclosure in the "background" section does not represent that or the problems which may be solved by one or more embodiments of the present invention are known or appreciated by those of ordinary skill in the art prior to the filing of the present application.
SUMMERY OF THE UTILITY MODEL
The utility model provides an optical module who possesses less volume.
The utility model provides a projection arrangement of noise that sends when effectively reducing the operation.
Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.
To achieve one or a part of or all of the above objects, or other objects, an embodiment of the present invention provides an optical module, which includes a base, a first frame, an optical element, and at least one first driving assembly. The first frame is arranged in the base. The first frame body is provided with a first body and a pair of first shaft parts, wherein the first shaft parts extend outwards from the first body, and the first body is provided with a pair of first inner folding edges. The optical element is disposed between the pair of first inner flaps. The first driving assembly and the optical element are respectively supported on two opposite sides of one of the first inner folding edges and used for driving the first body to swing relative to the base by taking the first shaft part as a rotating shaft.
In order to achieve one or a part of or all of the above objectives, or other objectives, an embodiment of the present invention further provides a projection apparatus, which includes an illumination system, a light valve, the above optical module, and a projection lens. The illumination system is used for providing an illumination light beam; the light valve is positioned on the transmission path of the illumination light beam and is used for converting the illumination light beam into an image light beam; the optical module is positioned on a transmission path of the image light beam and used for improving the resolution of the image light beam; the projection lens is located on the transmission path of the image beam and is used for projecting the image beam, wherein the optical module is arranged between the light valve and the projection lens.
Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. The utility model discloses an among the optical module and the projection arrangement of embodiment, drive assembly and optical element bear respectively in the relative both sides of the interior hem of framework for drive assembly can be closer to optical element, and therefore, can effectively reduce optical module's overall dimension, and the vibrations sound that produces when reducing the projection arrangement operation.
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic view of a projection apparatus according to the present invention;
FIG. 2A is a schematic diagram of the optical module of FIG. 1;
FIG. 2B is a schematic view of the frame and the base of FIG. 2A;
FIG. 3 is a schematic view of an optical module according to another embodiment;
fig. 4 is a schematic diagram of an optical module according to another embodiment of the present invention.
Description of the reference numerals
1: a projection device;
10: an illumination system;
20: a light valve;
30. 30', 30 ": an optical module;
31. 31': a first frame body;
312: a first body;
3121: a first inner folded edge;
3122: a first inner horizontal portion;
3123: a first outer fold;
3124: a first outer horizontal portion;
314. 314': a first shaft portion;
32: a base;
33: an optical element;
34: a first drive assembly;
342: a magnet;
344: a coil;
35: a second frame body;
352: a second body;
3521: a second inner folded edge;
3522: a second inner horizontal portion;
3523: a second outer fold;
354: a second shaft portion;
36: a second drive assembly;
362: a magnet;
364: a coil;
40: a projection lens;
l1: an illumination beam;
l2: an image beam;
x: a first direction;
y: a second direction;
C. c': a breaking part.
Detailed Description
The foregoing and other features, aspects and utilities of the present invention will be apparent from the following more particular description of the preferred embodiments, as illustrated in the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting. Further, wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
Fig. 1 is a schematic view of a projection apparatus according to the present invention, fig. 2A is a schematic view of an optical module in fig. 1, and fig. 2B is a schematic view of a frame and a base in fig. 2A. Referring to fig. 1, fig. 2A and fig. 2B, the projection apparatus 1 includes an illumination system 10, a light valve 20, an optical module 30 and a projection lens 40. The illumination system 10 is used to provide an illumination beam L1. The light valve 20 is located on the transmission path of the illumination light beam L1 and is used for converting the illumination light beam L1 into an image light beam L2; the optical module 30 is located on the transmission path of the image light beam L2 and is used for improving the resolution of the image light beam L2. The projection lens 40 is located on the transmission path of the image beam L2 and is used for projecting the image beam L2, wherein the optical module 30 is disposed between the light valve 20 and the projection lens 40.
The optical module 30 includes a base 32, a first frame 31, an optical element 33, and at least one first driving assembly 34. Two first drive assemblies 34 are shown in fig. 2A. The first frame 31 may be formed by stamping, cutting, and bending a metal plate. The first frame 31 is disposed in the base 32, and the first frame 31 has a first body 312 and a pair of first shaft portions 314, wherein the first shaft portions 314 extend outward from the first body 312, in this embodiment, the first shaft portions 314 extend to the base 32 from two opposite sides of the first body 312 to connect with the base 32, but the invention is not limited thereto. The first body 312 has a pair of first inner flaps 3121, wherein the inner flaps refer to flaps bent from inner side edges of the panel toward opposite outer sides to form sides on opposite inner sides of the panel, the inner sides refer to sides relatively far from the base 32, the outer sides refer to sides relatively near to the base 32, and the first body 312 further has a first inner horizontal portion 3122 connected substantially perpendicularly to the first inner flaps 3121.
The optical element 33 is disposed between the pair of first inner flaps 3121. Specifically, the optical element 33 is framed in an inner region (not labeled) surrounded by the first body 312, and the first inner flap 3121 is located at opposite sides of the optical element 33.
The first driving assembly 34 and the optical element 33 for driving the first body 312 to swing relative to the base 32 about the first shaft 314 are respectively supported against two opposite sides of the first inner fold 3121. Specifically, the first driving assembly 34 is placed on the first inner horizontal portion 3122 of the first body 312 and bears against the outer side of the corresponding first inner fold 3121, and the optical element 33 bears against the inner side of the corresponding first inner fold 3121. The first driving assemblies 34 in this embodiment have two, so that the two first driving assemblies 34 are placed on the first inner horizontal portions 3122 at opposite sides of the first body 312 and each bear against the corresponding first inner fold 3121.
In other embodiments, the number of the first driving assemblies 34 may be only one, and thus the first driving assemblies 34 are disposed to abut against one of the two first inner folds 3121.
The first body 312 further has a pair of first outer folding edges 3123, wherein the first inner folding edges 3121 are located at one opposite sides of the first body 312, and the first outer folding edges 3123 are located at the other opposite sides of the first body 312. In other words, the first inner fold 3121 and the first outer fold 3123 together form a substantially square shape. The folded-out edge herein means an edge where the outer edge of the plate member is bent toward the opposite inner side to form the opposite outer side of the plate member, the inner side means a side opposite to the base 32, the outer side means a side opposite to the base 32, and a point where the first body 312 is substantially perpendicularly connected to the first folded-out edge 3123 is defined as a first outer horizontal portion 3124. The optical element 33 is placed on the first outer horizontal portion 3124 of the first body 312 and bears against the first outer flap 3123 and the first inner flap 3121. Specifically, the first inner fold 3121 is located between the first inner horizontal portion 3122 and the optical element 33, so that the optical element 33 is seated against the first inner fold 3121; the first outer horizontal portion 3124 is located between the two first outer fold edges 3123, and thus the optical element 33 is placed on the first outer horizontal portion 3124 and bears against the first outer fold edge 3123.
Referring to fig. 2A and 2B, the first driving assembly 34 can be disposed closer to the optical element 33 by clamping the first inner flange 3121 together with the optical element 33 through the flange arrangement. Therefore, the first frame 31 can be effectively reduced in size while saving the board width in the first direction X.
In addition, since the first driving assembly 34 in this embodiment is directly placed on the first inner horizontal portion 3122 and bears against the first inner fold 3121, stability in fixing the first driving assembly 34 may be improved.
In addition, since the optical element 33 is supported by the first folded-out edge 3123, the board width can be further reduced at the side of the first body 312 where the first driving component 34 is not disposed, i.e., in the second direction Y. Therefore, the entire size of the first frame body 31 can be effectively reduced.
Incidentally, the side of the first driving assembly 34 faces the supported first inner fold 3121, and the overlapping area of the side of the first driving assembly 34 and the first inner fold 3121 on which the first driving assembly 34 is supported is greater than or equal to 50% of the area of the side of the first driving assembly 34.
Further, the first driving component 34 includes a magnet 342 and a coil 344, for example, the magnet 342 and the coil 344 face each other with a gap between the magnet 342 and the coil 344. In this embodiment, the magnet 342 is supported on the outer side of the first inner fold 3121, and the coil 344 is disposed on the base, however, in other embodiments, the positions of the magnet 342 and the coil 344 may be changed, for example, the coil 344 may be supported on the outer side of the first inner fold 3121, and the magnet 342 is disposed on the base, which is not limited by the present invention. In addition, since the first frame 31 is made of a magnetic conductive material (metal), by such a design, when the optical module 30 operates, the first driving assembly 34 is powered to form an electromagnetic effect, and the first inner fold 3121 can be used as a yoke to increase magnetic lines of force, so that the first driving assembly 34 has a stronger force to drive the optical element 33.
With continued reference to fig. 2A and 2B, the first fold-out edge 3123 may have a break portion C, where the break portion C is correspondingly disposed to form the first shaft portion 314, and the first shaft portion 314 is parallel to the first outer horizontal portion 3124 and extends toward the base 32 to connect with the base 32.
The above embodiment is described in that the first frame 31 of the optical module 30 is formed in a single-axis manner, and the first shaft portion 314 extends outward from one pair of sides of the first body 312 in opposite directions.
Fig. 3 is a schematic view of an optical module according to another embodiment. Referring to fig. 3, the difference between the present embodiment and the previous embodiment is: in the optical module 30 ', the first shaft portion 314 ' of the first frame body 31 ' extends outward from a diagonal line of the first body 312.
Specifically, the first shaft portion 314' is formed at the junction of two side edges of the first body 312, wherein one of the two side edges is formed with the first inner fold 3121, and the other side edge is formed with the first outer fold 3123.
In the case where the first shaft portion 314' is formed at a diagonal line of the first body 312, the first inner fold 3121 or the first outer fold 3123 may be continuous without a break C. Without the cut-off portion C, the bearing contact area of the first driving assembly 34 with the first inner fold 3121 is larger, and thus the first driving assembly 34 can be stably disposed on the first frame 31'. Of course, it is also possible to make the first inner fold 3121 or the first outer fold 3123 have the broken portion C as desired, for example, to reduce the overall weight of the first frame body 31'.
Fig. 4 is a schematic diagram of an optical module according to another embodiment of the present invention. Referring to fig. 4, in the present embodiment, the optical module 30 "is similar to the optical module 30, except that the optical module 30" further includes a second frame 35 disposed between the first frame 31 and the base 32. The second frame 35 has a second body 352 and a pair of second shaft portions 354, wherein the first shaft portion 314 is connected to the second body 352, the second shaft portions 354 extend outward from two opposite sides of the second body 352 and are connected to the base 32, and the extending direction of the first shaft portion 314 is perpendicular to the extending direction of the second shaft portions 354.
The second body 352 may have a pair of second inner flaps 3521, a plurality of second outer flaps 3523, and a second inner horizontal portion 3522 connected to the second inner flaps 3521, wherein the definition of the inner and outer flaps has been described above, and thus, the description thereof is omitted.
The optical module 30 "further includes at least one second driving assembly 36 disposed at a side of one of the pair of second inner flaps 3521 facing the base 32. Two second drive assemblies 36 are shown in fig. 4, each disposed at a pair of second inner flaps 3521. The second driving assembly 36 is used for driving the second body 352 to swing relative to the base 32 by using the second shaft portion 354 as a rotating shaft. Wherein a portion of the second driving assembly 36 is sandwiched between two of the plurality of second outer flaps 3523 to achieve the positioning of the second driving assembly 36. Further, the second driving element 36 includes a magnet 362 and a coil 364, for example, the magnet 362 and the coil 364 face each other with a gap between the magnet 362 and the coil 364. In this embodiment, the magnet 362 is supported on the outer side of the second inner flange 3521 and sandwiched between the two second outer flanges 3523, and the coil 364 is disposed on the base, however, in other embodiments, the positions of the magnet 362 and the coil 364 can be changed, for example, the coil 364 can be supported on the outer side of the second inner flange 3521 and sandwiched between the two second outer flanges 3523, and the magnet 362 is disposed on the base, which is not limited thereto.
In other embodiments, the number of the second driving assemblies 36 may be only one, and therefore, the second driving assemblies 36 are disposed to abut against one of the two second inner flanges 3521.
In this embodiment, the first frame body 31 and the second frame body 35 may be made of a metal plate, wherein the first outer folding edge 3123 may have a broken portion C, and the first shaft portion 314 of the first frame body 31 extends from the broken portion C of the first outer folding edge 3123 to be directly connected to the second body 352 of the second frame body 35. Alternatively, when the first housing 31 and the second housing 35 are connected together by post-processing, the broken portion C of the first outer fold 3123 may extend the first shaft portion 314 toward the second housing 35 to be connected to the second body 352 of the second housing 35. Further, as shown in fig. 4, the second inner fold 3521 may have a break portion C ', and the first shaft portion 314 of the first frame 31 extends from the break portion C of the first outer fold 3123 to the break portion C' of the second inner fold 3521.
In another embodiment, the first outer folding edge 3123 and the second outer folding edge 3523 may be continuous and uninterrupted folding edges, and the first frame 31 and the second frame 35 may be connected together by post-processing, for example, the first frame 31 and the second frame 35 are connected to the second frame 35 by welding or locking with an iron sheet between the first frame 31 and the second frame 35.
In addition, referring back to fig. 4, the second body 352 may have a plurality of second outer folding edges 3523 distributed on the side where the second driving element 36 is not disposed, so as to reinforce the structural strength of the second body 352. Furthermore, in the embodiment of fig. 4, a plurality of other second inner folding edges 3521 may be further included, and may also be distributed on the side where the second driving component 36 is not disposed, so as to reinforce the structural strength of the second body 352.
In summary, in the optical module and the projection apparatus using the optical module of the present invention, the first driving assembly is disposed closer to the optical element by changing the arrangement of the folded edge, so that the size of the frame and the base of the optical module can be effectively reduced, and the overall size of the optical module is more compact. Specifically, the frame can save 7% and 5% of space in the width direction (e.g., the first direction X shown in fig. 2A and 2B) and in the length direction (e.g., the second direction Y shown in fig. 2A and 2B), respectively.
In addition, the whole size of the frame body is effectively reduced, so that the rotational inertia can be reduced by 14%, when the optical module is in operation, the thrust requirement provided for the optical module can be reduced by 5%, the same swinging speed can be achieved, and the vibration sound generated when the projection device is in operation can be reduced.
Moreover, the side face of the first driving assembly directly leans against the first inner folding edge, and the overlapping area of the side face of the first driving assembly and the first inner folding edge, which the first driving assembly leans against, is greater than or equal to 50% of the area of the side face of the first driving assembly, so that the first folding edge can be used as a yoke, magnetic lines of force are increased, and the force of the first driving assembly driving the optical element is stronger.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, i.e., all simple equivalent changes and modifications made according to the claims and the contents of the specification of the present invention are still within the scope of the present invention. Moreover, it is not necessary for any embodiment or claim of the invention to achieve all of the objects, advantages, or features disclosed herein. In addition, the abstract and the utility model name are only used to assist the retrieval of patent documents, and are not used to limit the scope of the invention. Furthermore, the terms "first", "second", and the like in the description or the claims are used only for naming elements (elements) or distinguishing different embodiments or ranges, and are not used for limiting the upper limit or the lower limit on the number of elements.
Claims (18)
1. An optical module comprising a base, a first frame, an optical element, and at least one first drive assembly, wherein:
the first frame body is arranged in the base and provided with a first body and a pair of first shaft parts, wherein the pair of first shaft parts extend outwards from the first body, and the first body is provided with a pair of first inner folding edges;
the optical element is arranged between the pair of first inner folded edges; and
the at least one first driving assembly and the optical element are respectively supported on two opposite sides of one of the pair of first inner folding edges, and the at least one first driving assembly is used for driving the first body to swing relative to the base by taking the pair of first shaft parts as rotating shafts.
2. The optical module of claim 1 wherein the first body further has a pair of first outer flanges, wherein the first inner flanges are located on opposite sides of the first body, wherein the first outer flanges are located on opposite sides of the first body, and wherein the optical element bears against the pair of first outer flanges and the pair of first inner flanges.
3. The optical module of claim 1, wherein a side of the first driving assembly faces the first inner flap, the side of the first driving assembly coinciding with an area of the first inner flap that the first driving assembly bears, the area of the side of the first driving assembly being greater than or equal to 50% of an area of the side of the first driving assembly.
4. The optical module of claim 1, wherein the pair of first shaft portions extend outwardly from a diagonal of the first body.
5. The optical module of claim 1, further comprising a second frame disposed between the first frame and the base, the second frame having a second body and a pair of second shaft portions, wherein the pair of first shaft portions are connected to the second body, the pair of second shaft portions extend outward from two opposite sides of the second body and are connected to the base, and an extending direction of the pair of first shaft portions is perpendicular to an extending direction of the pair of second shaft portions.
6. The optical module of claim 5, further comprising at least one second driving assembly, wherein the second body further has a pair of second inner flanges, the at least one second driving assembly is disposed on a side of one of the pair of second inner flanges facing the base, and the at least one second driving assembly is configured to drive the second body to swing relative to the base about the pair of second shaft portions.
7. The optical module of claim 6, further comprising a plurality of second outer flaps, a portion of the at least one second drive assembly being sandwiched between two of the plurality of second outer flaps.
8. The optical module of claim 2 wherein the first outer flap is a continuous uninterrupted flap.
9. The optical module of claim 2 wherein the first folded-out edge has a break.
10. A projection device, comprising an illumination system, a light valve, an optical module, and a projection lens, wherein:
the illumination system is used for providing an illumination light beam;
the light valve is positioned on the transmission path of the illumination light beam and is used for converting the illumination light beam into an image light beam;
the optical module is located on a transmission path of the image light beam and used for improving the resolution of the image light beam, and the optical module comprises a base, a first frame, an optical element and at least one first driving assembly, wherein:
the first frame body is arranged in the base and provided with a first body and a pair of first shaft parts, wherein the pair of first shaft parts extend outwards from the first body, and the first body is provided with a pair of first inner folding edges;
the optical element is arranged between the pair of first inner folded edges; and
the at least one first driving assembly and the optical element are respectively supported on two opposite sides of one of the pair of first inner folding edges, and the at least one first driving assembly is used for driving the first body to swing relative to the base by taking the pair of first shaft parts as rotating shafts; and
the projection lens is located on a transmission path of the image beam and is used for projecting the image beam, wherein the optical module is configured between the light valve and the projection lens.
11. The projection device of claim 10, wherein the first body further has a pair of first outer flanges, wherein the first inner flanges are located on opposite sides of the first body, wherein the first outer flanges are located on opposite sides of the first body, and wherein the optical element bears against the pair of first outer flanges and the pair of first inner flanges.
12. The projection device of claim 10, wherein a side of the first drive assembly faces the first inner flap, the side of the first drive assembly coinciding with an area of the first inner flap that the first drive assembly bears, the area of the side of the first drive assembly being greater than or equal to 50% of an area of the side of the first drive assembly.
13. The projection device of claim 10, wherein the pair of first shaft portions extend outwardly from a diagonal of the first body.
14. The projection apparatus according to claim 10, further comprising a second frame disposed between the first frame and the base, the second frame having a second body and a pair of second shaft portions, wherein the pair of first shaft portions are connected to the second body, the pair of second shaft portions extend outward from two opposite sides of the second body and are connected to the base, and an extending direction of the pair of first shaft portions is perpendicular to an extending direction of the pair of second shaft portions.
15. The projection apparatus according to claim 14, further comprising at least one second driving assembly, wherein the second body further has a pair of second inner flanges, the at least one second driving assembly is disposed on a side of one of the pair of second inner flanges facing the base, and the at least one second driving assembly is configured to drive the second body to swing relative to the base about the pair of second shaft portions.
16. The projection device of claim 15, further comprising a plurality of second outer flaps, a portion of the at least one second drive assembly being sandwiched between two of the plurality of second outer flaps.
17. The projection device of claim 11, wherein the first outer flap is a continuous, uninterrupted flap.
18. The projection device of claim 11, wherein the first folded-out edge has a break.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020152381.6U CN211318878U (en) | 2020-02-05 | 2020-02-05 | Optical module and projection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020152381.6U CN211318878U (en) | 2020-02-05 | 2020-02-05 | Optical module and projection device |
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| CN211318878U true CN211318878U (en) | 2020-08-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684654A (en) * | 2021-03-15 | 2021-04-20 | 深圳市火乐科技发展有限公司 | Optical assembly and projection equipment |
| CN113219647A (en) * | 2020-02-05 | 2021-08-06 | 中强光电股份有限公司 | Optical module and projection device |
-
2020
- 2020-02-05 CN CN202020152381.6U patent/CN211318878U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219647A (en) * | 2020-02-05 | 2021-08-06 | 中强光电股份有限公司 | Optical module and projection device |
| CN113219647B (en) * | 2020-02-05 | 2023-06-13 | 中强光电股份有限公司 | Optical module and projection device |
| CN112684654A (en) * | 2021-03-15 | 2021-04-20 | 深圳市火乐科技发展有限公司 | Optical assembly and projection equipment |
| CN112684654B (en) * | 2021-03-15 | 2021-06-29 | 深圳市火乐科技发展有限公司 | Optical assembly and projection equipment |
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