CN108873573B - Built-in lens protection device and projector using same - Google Patents
Built-in lens protection device and projector using same Download PDFInfo
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- CN108873573B CN108873573B CN201810644318.1A CN201810644318A CN108873573B CN 108873573 B CN108873573 B CN 108873573B CN 201810644318 A CN201810644318 A CN 201810644318A CN 108873573 B CN108873573 B CN 108873573B
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
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Abstract
The invention provides a built-in lens protection device and a projector using the same. The built-in lens protection device includes a lens barrier and a driving motor. The lens baffle is rotatably arranged on the inner side of the shell, is fixedly arranged in the shell through a first rotating shaft and is arranged adjacent to the lens hole. The driving motor is arranged in the casing and corresponds to the first rotating shaft and is used for driving the lens baffle to rotate around the first rotating shaft. The driving motor drives the lens baffle to rotate towards the direction far away from the lens hole when the lens starts to work, the lens baffle moves to one side of the lens hole, and the lens hole exposes the lens in the shell. The driving motor drives the lens baffle to rotate towards the direction close to the lens hole when the lens stops working, the lens baffle moves to be positioned between the lens and the lens hole, and the lens hole is covered by the lens baffle to protect the lens in the shell. The invention can automatically open the lens to protect the lens, and the lens baffle and the driving mechanism are internally arranged and integrated in the projector table, so that the lens cannot be lost and is not easy to damage.
Description
Technical Field
The invention relates to the field of lens protection devices, in particular to a built-in lens protection device and a projector using the same.
Background
At present, in a projection display device or an imaging device, optical imaging must be completed by a lens, and if the surface of the lens is scratched or stained with dust, an image projected or captured by the lens is blurred. Therefore, in such electronic devices, it is necessary to keep the lens clean and prevent external dust from adhering to the surface of the lens.
The lens protection device adopted in the prior art mainly has the following two forms: firstly, a projection opening of a projector is provided with a thread or a buckle structure, a lens protection cover is provided with a corresponding thread or a corresponding buckle structure, when the projector is used, the lens protection cover is taken down from the projection opening, and when the projector is not used, the lens protection cover covers the projection opening; second, the lens protection cover is connected to some kind of driving part, when the machine is needed, the driving part is driven to operate, and at the same time, the lens protection cover is driven to automatically open, when the machine is not used, the lens protection cover is driven to automatically close.
However, the first lens protection cover needs to be manually operated, and cannot be automatically opened when the projector starts to work or automatically closed when the projector stops working, while the second lens protection cover can be automatically opened and closed, but the existing driving component structures have advantages and disadvantages, and cannot completely meet various application requirements of the lens protection device, and many lens protection devices have lens covers arranged outside the housing, which are easily damaged, and affect the cleanliness of products.
Disclosure of Invention
In view of the above technical problems, the present invention provides a built-in lens protection device and a projector using the same, in which a lens protection function can be automatically turned on in an inoperative state and a structure is simple.
The invention relates to a built-in lens protection device, which is used for protecting a lens arranged in a machine shell, wherein the machine shell is provided with a lens hole corresponding to the lens, and the built-in lens protection device comprises a lens baffle and a driving motor; the lens baffle is rotatably arranged on the inner side of the shell, the lens baffle is fixedly arranged in the shell through a first rotating shaft, and the lens baffle is arranged adjacent to the lens hole; the driving motor is arranged in the shell and used for driving the lens baffle to rotate around the first rotating shaft; when the lens starts to work, the driving motor drives the lens baffle to rotate towards the direction far away from the lens hole, the lens baffle moves to one side of the lens hole, and the lens hole exposes the lens in the shell; when the lens stops working, the driving motor drives the lens baffle to rotate towards the direction close to the lens hole, the lens baffle moves to be positioned between the lens and the lens hole, and the lens hole is covered by the lens baffle to protect the lens in the shell.
Preferably, the lens baffle is a fan-shaped flat plate, the first rotating shaft is disposed at a center of the fan-shaped flat plate, and a central axis of the first rotating shaft is perpendicular to a plane where the lens hole is located, wherein the fan-shaped flat plate rotates around the first rotating shaft to completely shield the lens hole or completely expose the lens hole.
Furthermore, the lens baffle is provided with a first radius edge and a second radius edge which are perpendicular to each other, the lens is arranged on the bottom edge in the shell, and the central axis direction of the first rotating shaft is parallel to the plane of the bottom edge; when the lens starts to work, the driving motor drives the lens baffle to rotate along the plane of the lens hole, the first radius edge rotates from the position which is horizontally positioned right below the lens hole to the position which is vertically positioned at one side of the lens hole, the second radius edge rotates from the position which is vertically positioned at one side of the lens hole to the position which is horizontally positioned at one side below the lens hole, and the second radius edge is abutted against the bottom edge in the shell; when the lens stops working, the driving motor drives the lens baffle to rotate along the plane where the lens hole is located, the second radius edge rotates to one side vertically located in the lens hole from one side horizontally located below the lens hole, the first radius edge rotates to one side vertically located in the lens hole from one side vertically located in the lens hole to be horizontally located right below the lens hole, and the first radius edge abuts against the bottom edge in the shell.
Preferably, the lens baffle is a bending plate having a connecting surface and a shielding surface, one end of the connecting surface is rotatably connected to the first rotating shaft, the other end of the connecting surface is connected to the shielding surface, the first rotating shaft is arranged adjacent to the lens, and the central axis direction of the first rotating shaft is parallel to the plane of the lens hole; when the lens starts to work, the driving motor drives the connecting surface to rotate around the first rotating shaft, the connecting surface drives the shielding surface to rotate to one side of the lens from a position right between the lens hole and the lens, and the lens hole is exposed out of the lens in the shell; when the lens stops working, the driving motor drives the connecting surface to rotate around the first rotating shaft, the connecting surface drives the shielding surface to rotate to a position between the lens hole and the lens from one side of the lens, and the lens hole is covered by the shielding surface to protect the lens in the shell.
Furthermore, the central axis direction of the first rotating shaft is perpendicular to the plane of the bottom edge; the first rotating shaft is arranged on the bottom edge in the shell, or the built-in lens protection device further comprises a first support, the first support is arranged on the bottom edge in the shell and spans the lens, and the first rotating shaft is arranged on the top side of the first support. Furthermore, the connecting surface is of a triangular structure, the shielding surface is of a polygonal structure, a vertex angle of the connecting surface is arranged on the first support through the first rotating shaft, one side, corresponding to the vertex angle, of the connecting surface is connected to one side of the shielding surface, and the area of the shielding surface is larger than the opening area of the lens hole.
Or further, the first rotating shaft is arranged on the bottom edge in the machine shell, and the central axis direction of the first rotating shaft is parallel to the plane of the bottom edge. Furthermore, the first rotating shaft comprises two rotating shafts which are respectively positioned at two sides of the lens; the lens baffle has two connection faces corresponding to the two rotating shafts respectively, the shielding face is arranged between the two connection faces, and the driving motor synchronously drives the two connection faces through the two rotating shafts and drives the shielding face to rotate. And furthermore, the two connecting surfaces are of a triangular or trapezoidal structure, the shielding surface is of a quadrilateral structure, one edge of each connecting surface is arranged on the bottom edge in the shell through a corresponding rotating shaft, one edge of each connecting surface, which is opposite to the edge, is respectively connected to two opposite edges of the shielding surface, and the area of the shielding surface is larger than the opening area of the lens hole.
Preferably, the driving motor is disposed at the first rotating shaft and drives the lens barrier to rotate around the first rotating shaft; or the driving motor is arranged at an arc edge which uses the first rotating shaft as a circle center in the lens baffle and drives the lens baffle to rotate around the first rotating shaft by driving the arc edge to move.
The invention also provides a projector which comprises the built-in lens protection device.
Compared with the prior art, the built-in lens protection device can effectively protect the lens, can automatically start the protection function when the projector does not work, and has simple structure and low manufacturing cost; the lens baffle and the driving mechanism are arranged in the projector, so that the lens baffle and the driving mechanism are integrated in the projector and cannot be lost, and the problem that a lens cover is damaged due to misoperation cannot occur.
Drawings
Fig. 1 is a schematic structural diagram of a built-in lens protection device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a built-in lens protection device according to another embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a built-in lens protection device according to another embodiment of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
The invention provides a built-in lens protection device which is used for protecting a lens arranged in a machine shell, wherein a lens hole corresponding to the lens is formed in the machine shell, and the built-in lens protection device comprises a lens baffle and a driving motor. The lens baffle is rotatably arranged on the inner side of the shell, the lens baffle is fixedly arranged in the shell through a first rotating shaft, and the lens baffle is arranged adjacent to the lens hole. The driving motor is arranged in the shell and used for driving the lens baffle to rotate around the first rotating shaft. When the lens starts to work, the driving motor drives the lens baffle to rotate towards the direction far away from the lens hole, the lens baffle moves to one side of the lens hole, and the lens hole exposes the lens in the shell; when the lens stops working, the driving motor drives the lens baffle to rotate towards the direction close to the lens hole, the lens baffle moves to be positioned between the lens and the lens hole, and the lens hole is covered by the lens baffle to protect the lens in the shell.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a built-in lens protection device 1 according to an embodiment of the present invention. The internal lens protection device 1 is for protecting a lens 91 provided in a housing 9, a lens hole 92 corresponding to the lens 91 is provided in the housing 9, and the internal lens protection device 1 includes a lens barrier 11 and a driving motor 12.
The lens barrier 11 is rotatably mounted inside the housing 9, the lens barrier 11 is fixedly disposed inside the housing 9 through a first rotating shaft 13, and the lens barrier 11 is disposed adjacent to the lens hole 92. Preferably, the lens barrier 11 is a fan-shaped flat plate, the first rotating shaft 13 is disposed at a central angle of the fan-shaped flat plate, a central axis direction of the first rotating shaft 13 is perpendicular to a plane of the lens hole 92, and the fan-shaped flat plate rotates around the first rotating shaft 13 to completely shield the lens hole 92 or completely expose the lens hole 92. The lens barrier 11 may be a fan-shaped flat plate with a central angle of about 90 degrees, but the invention is not limited thereto.
The driving motor 12 is disposed in the housing 9 and corresponds to the first rotating shaft 13, and the driving motor 12 is used for driving the lens barrier 11 to rotate around the first rotating shaft 13. Preferably, the driving motor 12 is provided at the first rotation shaft 13, and drives the lens barrier 11 to rotate about the first rotation shaft 13. Alternatively, the driving motor 12 may be disposed at an arc edge of the lens barrier 11 with the first rotating shaft 13 as a center, and drives the lens barrier 11 to rotate around the first rotating shaft 13 by driving the arc edge to move. The arc edge with the first rotating shaft 13 as the center may be located at the outer edge of the lens barrier, or may be located inside the lens barrier, for example, in the form of an arc-shaped groove, which is not limited in the present invention.
When the lens 91 starts to work, the driving motor 12 drives the lens baffle 11 to rotate in a direction away from the lens hole 92, the lens baffle 11 moves to a side of the lens hole 92, and the lens hole 92 exposes the lens 91 in the housing 9; when the lens 91 stops operating, the driving motor 12 drives the lens barrier 11 to rotate in a direction approaching the lens hole 92, the lens barrier 11 moves to be positioned between the lens 91 and the lens hole 92, and the lens hole 92 is covered by the lens barrier 11 to protect the lens 91 in the housing 9. In practical applications, the start of the lens 91 may correspond to the operation of turning on/starting the power supply or the light source of the electronic device, and the lens 91 starts to operate; the stop of the lens 91 may correspond to the power supply of the electronic device or the off state of the light source, and it should be noted that, since the driving motor 12 generally needs a certain amount of power when operating, the driving motor 12 still remains a specific power supply for a period of time when the lens 91 stops operating until the lens hole 92 is covered by the lens barrier 11, or the driving motor 12 may have an additional power supply, which is not affected by the off state of the main power supply of the electronic device.
Preferably, the lens barrier 11 has a first radius edge 111 and a second radius edge 112 perpendicular to each other or close to perpendicular to each other, the lens 91 is disposed on the bottom side 93 in the housing 9, and the central axis direction of the first rotating shaft 13 is parallel to the plane of the bottom side 93; when the lens 91 starts to work, the driving motor 12 drives the lens barrier 11 to rotate along the plane of the lens hole 92, the first radius edge 111 rotates from the position right below the lens hole 92 to the position vertically at one side of the lens hole 92, the second radius edge 112 rotates from the position vertically at one side of the lens hole 92 to the position horizontally at one side below the lens hole 92, and the second radius edge 112 abuts against the bottom edge 93 in the housing 9, as shown in fig. 1; when the lens 91 stops working, the driving motor 12 drives the lens barrier 11 to rotate along the plane of the lens hole 92, the second radius edge 112 rotates from the side horizontally below the lens hole 92 to the side vertically below the lens hole 92, the first radius edge 111 rotates from the side vertically below the lens hole 92 to the side horizontally right below the lens hole 92, and the first radius edge 111 abuts against the bottom edge 93 in the housing 9.
Preferably, the first radius edge 111 and the second radius edge 112 may also be at an acute or obtuse angle therebetween, such that one of the two rotational positions completely covers the lens hole 92 and the other completely exposes the lens hole 92. In addition, the intersection part of the first radius edge 111 and the fan-shaped edge can be chamfered, and the intersection part of the second radius edge 112 and the fan-shaped edge can be chamfered; the first radius side 111 and the second radius side 112 may overlap at least a part of a radius about the first rotation axis, or may be at least a part parallel to the radius about the first rotation axis. The invention is not limited thereto.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a built-in lens protection device 2 according to another embodiment of the present invention. The internal lens protection device 2 is for protecting a lens 91 provided in a housing 9, a lens hole 92 corresponding to the lens 91 is provided in the housing 9, and the internal lens protection device 2 includes a lens barrier 21 and a driving motor 22.
The lens barrier 21 is rotatably mounted inside the housing 9, the lens barrier 21 is fixedly disposed inside the housing 9 through the first rotating shaft 23, and the lens barrier 21 is disposed adjacent to the lens hole 92. Preferably, the lens barrier 21 is a bending plate having a connecting surface 211 and a blocking surface 212, one end of the connecting surface 211 is rotatably connected to the first rotating shaft 23, the other end of the connecting surface 211 is connected to the blocking surface 212, the first rotating shaft 23 is disposed adjacent to the lens 91, and the central axis of the first rotating shaft 23 is parallel to the plane of the lens hole 92. In practical applications, the connecting surface 211 can be a plane or a curved surface, and the blocking surface 212 can also be a plane or a curved surface, as long as the other elements are not interfered during the rotation. Preferably, the connecting surface 211 and the blocking surface 212 are perpendicular planes, so that the installation and movement space of the lens barrier 21 can be saved, the miniaturization of the built-in lens protection device 2 is facilitated, and the structure is simple and the manufacturing cost is low.
The driving motor 22 is disposed in the housing 9 and corresponds to the first rotating shaft 23, and the driving motor 22 is used for driving the lens barrier 21 to rotate around the first rotating shaft 23. Preferably, the driving motor 22 is disposed at the first rotation shaft 23 and drives the lens barrier 21 to rotate about the first rotation shaft 23. Alternatively, the driving motor 22 may be disposed at an arc edge of the lens barrier 21 with the first rotating shaft 23 as a center, and drives the lens barrier 21 to rotate around the first rotating shaft 23 by driving the arc edge to move.
When the lens 91 starts to work, the driving motor 22 drives the lens baffle 21 to rotate in a direction away from the lens hole 92, the lens baffle 21 moves to a side of the lens hole 92, and the lens hole 92 exposes the lens 91 in the housing 9; when the lens 91 stops operating, the driving motor 22 drives the lens barrier 21 to rotate in a direction approaching the lens hole 92, the lens barrier 21 moves to be positioned between the lens 91 and the lens hole 92, and the lens hole 92 is covered by the lens barrier 21 to protect the lens 91 in the housing 9. Preferably, when the lens 91 starts to work, the driving motor 22 drives the connecting surface 211 to rotate around the first rotating shaft 23, the connecting surface 211 drives the shielding surface 212 to rotate from a position between the lens hole 92 and the lens 91 to a position at one side of the lens 91, and the lens hole 92 exposes the lens 91 in the housing 9, as shown in fig. 2; when the lens 91 stops working, the driving motor 22 drives the connecting surface 211 to rotate around the first rotating shaft 23, the connecting surface 211 drives the shielding surface 212 to rotate from the side of the lens 91 to the position between the lens hole 92 and the lens 91, and the lens hole 92 is covered by the shielding surface 212 to protect the lens 91 in the housing 9. In practical applications, the start of the lens 91 may correspond to the power supply or the light source of the electronic device being turned on, and the lens 91 starts to operate; the stop of the lens 91 may correspond to the power supply of the electronic device or the off state of the light source, and it should be noted that, since the driving motor 22 generally needs a certain amount of power when operating, the driving motor 22 still remains a specific power supply for a period of time when the lens 91 stops operating until the lens hole 92 is covered by the lens barrier 21, or the driving motor 22 may have an additional power supply, which is not affected by the total power supply of the electronic device.
In this embodiment, the internal lens protection device 2 further includes a first bracket 24, the first bracket 24 is disposed on a bottom side 93 inside the housing 9 and straddles over the lens 91, the first rotating shaft 23 is disposed in a middle portion of a top side of the first bracket 24, and a central axis direction of the first rotating shaft 23 is perpendicular to a plane of the bottom side 93. In different embodiments, the first rotating shaft 23 may also be disposed on the bottom side 93 in the housing 9, and the central axis direction of the first rotating shaft 23 is perpendicular to the plane of the bottom side 93, which is not limited in the present invention.
Preferably, the connecting surface 211 is a triangle, the shielding surface 212 is a polygon, such as a quadrilateral, a vertex angle of the connecting surface 211 is disposed on the first bracket 24 through the first rotating shaft 23, a side of the connecting surface 211 corresponding to the vertex angle is connected to a side of the shielding surface 212, and an area of the shielding surface 212 is larger than an opening area of the lens hole 92. It should be noted that the structures of the connection surface 211 and the shielding surface 212 are not limited to this, but the structure of the internal lens protection device 2 can be made simpler and the manufacturing cost can be made lower corresponding to the structure of the above embodiment of fig. 2.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a built-in lens protection apparatus 3 according to another embodiment of the present invention. The built-in lens protection apparatus 3 protects a lens 91 provided in a housing 9, a lens hole 92 corresponding to the lens 91 is provided on the housing 9, and the built-in lens protection apparatus 3 includes a lens barrier 31 and a driving motor 32.
The lens barrier 31 is rotatably mounted inside the housing 9, the lens barrier 31 is fixedly disposed inside the housing 9 through the first rotating shaft 33, and the lens barrier 31 is disposed adjacent to the lens hole 92. Preferably, the lens barrier 31 is a bending plate having a connecting surface 311 and a shielding surface 312, one end of the connecting surface 311 is rotatably connected to the first rotating shaft 33, the other end of the connecting surface 311 is connected to the shielding surface 312, the first rotating shaft 33 is disposed adjacent to the lens 91, and the central axis of the first rotating shaft 33 is parallel to the plane of the lens hole 92. The first rotating shaft 33 is disposed on a bottom side 93 in the housing 9, and a central axis direction of the first rotating shaft 33 is parallel to a plane of the bottom side 93. In practical applications, the connection surface 311 may be a plane or a curved surface, and the blocking surface 312 may also be a plane or a curved surface, as long as it does not interfere with other components during the rotation. Preferably, the connecting surface 311 and the shielding surface 312 are perpendicular planes, so that the installation and movement space of the lens barrier 31 can be saved, the miniaturization of the built-in lens protection device 3 is facilitated, and the structure is simple and the manufacturing cost is low.
The driving motor 32 is disposed in the housing 9 and corresponds to the first rotating shaft 33, and the driving motor 32 is used for driving the lens barrier 31 to rotate around the first rotating shaft 33. Preferably, the driving motor 32 is disposed at the first rotating shaft 33, and drives the lens barrier 31 to rotate around the first rotating shaft 33. Alternatively, the driving motor 32 may be disposed at an arc edge of the lens barrier 31 with the first rotating shaft 33 as a center, and drives the lens barrier 31 to rotate around the first rotating shaft 33 by driving the arc edge to move.
When the lens 91 starts to work, the driving motor 32 drives the lens barrier 31 to rotate in a direction away from the lens hole 92, the lens barrier 31 moves to a side of the lens hole 92, and the lens hole 92 exposes the lens 91 in the housing 9; when the lens 91 stops operating, the driving motor 32 drives the lens barrier 31 to rotate in a direction approaching the lens hole 92, the lens barrier 31 moves to be positioned between the lens 91 and the lens hole 92, and the lens hole 92 is covered by the lens barrier 31 to protect the lens 91 in the housing 9. Preferably, when the lens 91 starts to work, the driving motor 32 drives the connecting surface 311 to rotate around the first rotating shaft 33, the connecting surface 311 drives the shielding surface 312 to rotate from a position between the lens hole 92 and the lens 91 to a position at one side of the lens 91, and the lens hole 92 exposes the lens 91 in the housing 9, as shown in fig. 3; when the lens 91 stops working, the driving motor 32 drives the connection surface 311 to rotate around the first rotation shaft 33, the connection surface 311 drives the shielding surface 312 to rotate from the side of the lens 91 to the position between the lens hole 92 and the lens 91, and the lens hole 92 is covered by the shielding surface 312 to protect the lens 91 in the housing 9.
In this embodiment, the first rotating shaft 33 may include two rotating shafts, which are respectively located at both sides of the lens 91; the lens barrier 31 has two connection surfaces 311 respectively corresponding to the two rotation shafts, the shielding surface 312 is disposed between the two connection surfaces 311, and the driving motor 32 synchronously drives the two connection surfaces 311 through the two rotation shafts and drives the shielding surface 312 to rotate. In different embodiments, the first rotating shaft 33 may be two rotating shafts at two sides, or may be one rotating shaft at one side; when the first rotating shaft 33 is two rotating shafts on two sides, the driving motor 32 may correspond to only one of the two rotating shafts, or may correspond to the two rotating shafts, respectively, and the invention is not limited thereto.
Preferably, the two connecting surfaces 311 are triangular or trapezoidal, the shielding surface 312 is quadrilateral, one corner of each connecting surface 311 is disposed on the bottom side 93 of the housing 9 through a corresponding rotating shaft, one side of each connecting surface 311 opposite to the corner is respectively connected to two opposite sides of the shielding surface 312, and the area of the shielding surface 312 is larger than the opening area of the lens hole 92. It should be noted that the structures of the connection surface 311 and the shielding surface 312 are not limited to this, but the structure of the internal lens protection device 3 can be made simpler and the manufacturing cost can be made lower corresponding to the structure of the above embodiment of fig. 3.
The invention provides a projector which comprises the built-in lens protection device in each embodiment. After a projector power supply or a host power supply is turned on, a driving motor drives a lens baffle to rotate in a direction away from a lens hole, the lens baffle moves to one side of the lens hole, and the lens hole exposes a lens in a shell; after the projector power supply or the host power supply is turned off, the driving motor drives the lens baffle to rotate towards the direction close to the lens hole, the lens baffle moves to be positioned between the lens and the lens hole, and the lens hole is covered by the lens baffle to protect the lens in the shell. It should be noted that, since the driving motor generally needs a certain amount of electric power when working, the driving motor still maintains a period of special power supply after the projector power supply or the host power supply is turned off until the lens hole is covered by the lens baffle; alternatively, the drive motor may have its own additional power supply, independent of the projector power or host power shut down.
The built-in lens protection device can effectively protect the lens, can automatically start the protection function when the projector does not work, and has simple structure and low manufacturing cost; the lens baffle and the driving mechanism are arranged in the projector, so that the lens baffle and the driving mechanism are integrated in the projector and cannot be lost, and the problem that a lens cover is damaged due to misoperation cannot occur. The built-in lens protection device can be widely applied to various projection display devices and other instruments and equipment needing the lens protection function.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. Rather, it is intended that all such modifications and variations be included within the spirit and scope of this invention.
Claims (6)
1. A built-in lens protection device is used for protecting a lens arranged in a machine shell, and the machine shell is provided with a lens hole corresponding to the lens;
the lens baffle is rotatably arranged on the inner side of the shell, the lens baffle is fixedly arranged in the shell through a first rotating shaft, and the lens baffle is arranged adjacent to the lens hole; the lens baffle is a fan-shaped flat plate, the lens baffle is provided with a first radius edge and a second radius edge which are perpendicular to each other, the lens is arranged on the bottom edge in the shell, and when the lens baffle does not shield the lens, the second radius edge is abutted against the bottom edge in the shell; the first rotating shaft is arranged at the center of a circle of the fan-shaped flat plate, the central axis direction of the first rotating shaft is perpendicular to the plane of the lens hole, and the central axis direction of the first rotating shaft is parallel to the plane of the bottom edge, wherein the fan-shaped flat plate rotates around the first rotating shaft to completely shield the lens hole or completely expose the lens hole;
the driving motor is arranged in the shell and used for driving the lens baffle to rotate around the first rotating shaft;
when the lens starts to work, the driving motor drives the lens baffle to rotate in the direction away from the lens hole, the lens baffle moves to one side of the lens hole, and the lens hole exposes the lens in the shell; when the lens stops working, the driving motor drives the lens baffle to rotate towards the direction close to the lens hole, the lens baffle moves to be positioned between the lens and the lens hole, and the lens hole is covered by the lens baffle to protect the lens in the shell.
2. A device for protecting a built-in lens as claimed in claim 1, wherein when the lens starts to operate, the driving motor drives the lens barrier to rotate along a plane of the lens hole, the first radius edge rotates from a position horizontally right under the lens hole to a position vertically at a side of the lens hole, the second radius edge rotates from a position vertically at a side of the lens hole to a position horizontally below the lens hole, and the second radius edge abuts against a bottom edge inside the housing; when the lens stops working, the driving motor drives the lens baffle to rotate along the plane where the lens hole is located, the second radius edge rotates from one side below the lens hole horizontally to one side vertically below the lens hole, the first radius edge rotates from one side vertically below the lens hole horizontally to the side vertically below the lens hole horizontally, and the first radius edge abuts against the bottom edge in the shell.
3. A device as claimed in claim 1, wherein the driving motor is disposed at the first rotation axis and drives the lens barrier to rotate around the first rotation axis; or the driving motor is arranged at an arc edge of the lens baffle plate which takes the first rotating shaft as a circle center, and drives the lens baffle plate to rotate around the first rotating shaft by driving the arc edge to move.
4. A device as claimed in claim 1, wherein the driving motor is provided with an additional power supply.
5. The device as claimed in claim 1, wherein the intersection of the first radius and the fan-shaped edge is chamfered.
6. A projector characterized by comprising the built-in lens protection device according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644318.1A CN108873573B (en) | 2018-06-21 | 2018-06-21 | Built-in lens protection device and projector using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810644318.1A CN108873573B (en) | 2018-06-21 | 2018-06-21 | Built-in lens protection device and projector using same |
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| Publication Number | Publication Date |
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| CN108873573A CN108873573A (en) | 2018-11-23 |
| CN108873573B true CN108873573B (en) | 2021-08-03 |
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| CN201810644318.1A Active CN108873573B (en) | 2018-06-21 | 2018-06-21 | Built-in lens protection device and projector using same |
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| CN110930532A (en) * | 2019-11-13 | 2020-03-27 | 重庆特斯联智慧科技股份有限公司 | Face identification attendance device and attendance system with same |
| CN114384745B (en) * | 2022-01-28 | 2024-05-07 | 青岛海信激光显示股份有限公司 | Laser projector and laser television |
| CN114995027B (en) * | 2022-06-28 | 2024-04-12 | 华电重工股份有限公司 | Industrial camera holder capable of preventing contact or entry of pollutants such as dust and machining chips |
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| US5845167A (en) * | 1996-01-12 | 1998-12-01 | Minolta Co., Ltd. | Camera with a barrier |
| CN1540433A (en) * | 2003-04-21 | 2004-10-27 | ������������ʽ���� | Lens damper mechanism and image pick-up |
| CN105027554A (en) * | 2013-03-01 | 2015-11-04 | 松下知识产权经营株式会社 | Camera apparatus and method of controlling camera apparatus |
| CN206209273U (en) * | 2016-11-29 | 2017-05-31 | 四川长虹电器股份有限公司 | Laser television projector lens protection cap |
| CN206775615U (en) * | 2017-05-05 | 2017-12-19 | 杭州泰东科技有限公司 | A kind of camera with protective cover |
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2018
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| US5845167A (en) * | 1996-01-12 | 1998-12-01 | Minolta Co., Ltd. | Camera with a barrier |
| CN1540433A (en) * | 2003-04-21 | 2004-10-27 | ������������ʽ���� | Lens damper mechanism and image pick-up |
| CN105027554A (en) * | 2013-03-01 | 2015-11-04 | 松下知识产权经营株式会社 | Camera apparatus and method of controlling camera apparatus |
| CN206209273U (en) * | 2016-11-29 | 2017-05-31 | 四川长虹电器股份有限公司 | Laser television projector lens protection cap |
| CN206775615U (en) * | 2017-05-05 | 2017-12-19 | 杭州泰东科技有限公司 | A kind of camera with protective cover |
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| CN108873573A (en) | 2018-11-23 |
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