CN102902043A - Optical element adjustment module, projection device and method for adjusting optical element - Google Patents

Abstract

An optical element adjusting module comprises a frame body, a first adjusting element and a second adjusting element. The frame body is provided with a connecting part and is connected with a light machine base of a projection device through the connecting part. A first axis and a second axis pass through the connecting portion. The optical element is arranged on the frame body. The first adjusting element is arranged on the frame body and on the first axis. When the first adjusting element is rotated, the first adjusting element drives the frame body to rotate around the first axis relative to the optical base. The second adjusting element is connected to the optical base and screwed on the frame body. When the second adjusting element is rotated, the second adjusting element drives the frame body to rotate around the second axis relative to the optical base. In addition, a projection device with the optical element adjusting module and a method for adjusting the optical element are also provided.

Description

Optical element adjustment module, projection device and method for adjusting optical element

【Technical field】

The present invention relates to an adjustment module, an optical device and an adjustment method, and in particular relates to an optical element adjustment module, a projection device and an adjustment method for an optical element.

【Background technique】

A projection device is a display device for producing large-scale images. The imaging principle of the projection device is to convert the illumination beam generated by the light source into an image beam through a light valve, and then convert the image beam into a projection beam through a lens, and project it onto a screen or a wall. With the advancement of projection technology and the reduction of manufacturing costs, the use of projection devices has gradually expanded from commercial use to home use.

Generally speaking, a reflector can be installed in the optical engine of the projection device, and the reflector is used to reflect the illumination beam emitted by the light source to the light valve, so as to achieve the effect of reducing the volume of the optical engine by changing the optical path. When the calculation of the optical path is inaccurate or there is a tolerance in the manufacturing and assembly of the optical machine, the angle of the reflector will be deviated, and the brightness and other optical qualities of the projection device will be affected.

Taiwan Patent No. M452093 discloses an advanced two-dimensional lens angle adjustment device for a liquid crystal projector, and the angle of the reflector can be adjusted. US Patent No. 7249857 discloses a locking and adjusting positioning device for a projection optical system, in which the angle of an integrating column is adjusted by rotating a screw. US Patent No. 7080910 discloses a mirror module of a display device, the angle of the mirror can be adjusted. US Patent No. 4401288 discloses an optical lens adjusting device for adjusting the angle of the reflector.

【Content of invention】

The invention provides an optical element adjustment module, which can accurately adjust the angle of the optical element of the projection device.

The invention provides a projection device, which includes an optical element adjustment module to accurately adjust the angle of the optical element.

The invention provides a method for adjusting the optical element, which can accurately adjust the angle of the optical element of the projection device.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides an optical element adjustment module for adjusting an optical element of a projection device. The projection device includes an optical base. The optical element adjustment module includes a frame, a first adjustment element and a second adjustment element. The frame body has a connecting portion, and the frame body is connected to the optical machine base through the connecting portion. The frame body has a first axis and a second axis passing through the connecting portion. The optical element is arranged on the frame body. The first adjusting element is arranged on the frame body and on the first axis. When the first adjustment element is used, the first adjustment element drives the frame body to rotate relative to the optical machine base with the first axis as the center. The second adjustment element is connected to the optical machine base and screwed to the frame body. When the second adjusting element is rotated, the second adjusting element drives the frame body to rotate relative to the optical machine base with the second axis as the center. In addition, the connecting part is a convex column, the optical base has a concave hole, and the frame body is connected to the optical base through the cooperation of the connecting part and the concave hole. The optical element adjustment module further includes a locking part, which is used to pass through the frame body and lock to the optical machine base, so as to set the frame body on the optical machine base. The frame body has a hole corresponding to the lock part, the lock part passes through the hole and is locked on the optical base, an aperture of the hole is larger than an outer diameter of the lock part, and the lock part is in the hole relative to the frame body moves. The second adjustment element is screwed to the frame body along a third axis, and the third axis passes through the first axis. In addition, the connecting part is located at the bottom end of the frame body, and the top end of the frame body has a support part, and the support part rests on the optical machine base. The supporting part is elastically deformed by the rotation of the support body around the second axis and the structural interference between the supporting part and the optical machine base.

The optical element adjustment module further includes: a spring, the second adjustment element is passed through the optical base, and the spring is sheathed on the second adjustment element and leans against between the optical base and the frame. A spacer is sheathed on the second adjusting element and bears against the optical machine base, wherein the spring is against between the spacer and the frame body. The optical elements are mirrors. The first axis is perpendicular to the second axis, and the first axis and the second axis are perpendicular to the third axis.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a projection device, including an optical base, an optical element adjustment module, a reflector, a light source, a light Valve and a lens. The optical element adjustment module includes a frame, a first adjustment element, and a second adjustment element. The frame body has a connecting portion and is rotatably connected to the optical machine base through the connecting portion. The frame body has a first axis and a second axis passing through the connecting portion. The first adjusting element is arranged on the frame body and is located on the first axis. When the first adjusting element rotates, the first adjusting element drives the frame body to rotate relative to the optical machine base with the first axis as the center. The second adjustment element is connected to the optical machine base and screwed to the frame body. When the second adjusting element is rotated, the second adjusting element drives the frame body to rotate relative to the optical machine base with the second axis as the center. The locking part is used to pass through the frame body and be locked to the optical machine base, so as to set the frame body on the optical machine base. The reflection mirror is arranged on the frame body. The light source is arranged on the optical machine base and used to provide an illumination beam. The light valve is configured on the light engine base. The reflector is used to reflect the illumination beam to the light valve. The light valve is used for converting the illumination light beam into an image light beam. The lens is arranged on the optical machine base and is used for converting the image light beam into a projection light beam.

To achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a method for adjusting an optical element, which is used for adjusting an optical element of a projection device. The projection device includes an optical base. Firstly, a frame body is provided, the frame body has a connecting portion and is connected to the optical base through the connecting portion, the frame body has a first axis and a second axis passing through the connection portion, and the optical element is arranged on the frame body. A first adjusting element is provided, and the first adjusting element is arranged on the frame body and located on the first axis. A second adjustment element is provided, and the second adjustment element is connected to the optical machine base and screwed to the frame body. The first adjusting element is rotated around the first axis, and the frame is driven to rotate relative to the optical machine base around the first axis. Rotate the second adjustment element to drive the frame body to rotate relative to the optical machine base with the second axis as the center.

In addition, the step of driving the frame to rotate relative to the optical base around the first axis includes: driving the frame to rotate clockwise around the first axis; If the first axis rotates clockwise as the center and gradually increases, then continue to drive the frame body to rotate clockwise along the first axis; The rotation decreases gradually, and the driving frame rotates counterclockwise around the first axis.

Based on the above, the step of driving the frame body to rotate relative to the optical machine base with the second axis as the center includes: driving the frame body to rotate clockwise with the second axis as the center; Rotate clockwise around the second axis to gradually increase, then continue to drive the frame body to rotate clockwise around the second axis; When the clockwise rotation decreases gradually, the driving frame rotates counterclockwise around the second axis.

And, after the frame body is driven to rotate relative to the optical machine base with the first axis and the second axis as the center, the frame body is arranged on the optical machine base through the locking part. And when the frame body is arranged on the optical machine base by a locking accessory, the first adjusting element is pressed down along the first axis to press the frame body tightly against the optical machine base. The locking part is used to set the frame body on the optical machine base; after releasing the setting of the locking part on the frame body, the first adjustment element is rotated around the first axis to drive the frame body relative to the optical machine base with the first axis turn.

Based on the above, in the above embodiments of the present invention, the user can rotate the first adjustment element to drive the frame to rotate along the first axis, and can rotate the second adjustment element to drive the frame to rotate along the second axis, so that The optical elements arranged on the frame are adjusted to an appropriate angle to improve the projection quality of the projection device. In addition, since the frame body is rotatably connected to the optical base through its connecting portion, the frame body can only rotate with the connecting portion as the center of rotation when the frame is stressed, so that the angle adjustment of the optical element is more accurate. In addition, since the connecting portion and the first adjustment element are both located on the first axis, the user can quickly and accurately rotate the first adjustment element to drive the frame to rotate around the first axis, so as to improve the angle adjustment of the optical element. convenience.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, a number of embodiments will be described in detail below together with the accompanying drawings.

【Description of drawings】

FIG. 1 is a schematic diagram of a projection device according to an embodiment of the present invention.

FIG. 2 is a perspective view of the projection device in FIG. 1 .

FIG. 3 is a perspective view of the frame and the optical element in FIG. 2 .

FIG. 4 is a partial cross-sectional view of the projection device in FIG. 2 .

FIG. 5 is a flowchart of a method for adjusting an optical element according to an embodiment of the present invention.

100: projection device

110: optical base

112: concave hole

120: light source

130: light valve

140: Lens

150: Optical component adjustment module

152: frame body

152a: connection part

152b: bottom end

152c: Top

152d: supporting part

152e: opening

152f: groove

154: first adjustment element

156: second adjustment element

157: spring

158: Lock accessory

159: Gasket

160: Optical elements

162: reflective surface

A1: first axis

A2: Second axis

A3: The third axis

B: Angle

L1: Lighting beam

L2: image beam

L3: projection beam

S602～S614: steps

【Detailed ways】

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed descriptions of multiple embodiments with reference to the drawings. The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the attached drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.

FIG. 1 is a schematic diagram of a projection device according to an embodiment of the present invention. The projection device 100 of this embodiment includes an optical base 110 , a light source 120 , a light valve 130 and a lens 140 . The light source 120, the light valve 130 and the lens 140 are disposed on the optical base 110. The light source 120 is used to provide an illumination beam L1. The light valve 130 is, for example, a digital micromirror device (digital micromirror devices, DMD) and is used to convert the illumination beam L1. It is an image beam L2, and the lens 140 is used to convert the image beam L2 into a projection beam L3.

Please refer to FIG. 2 to FIG. 4 , the projection device 100 of this embodiment further includes an optical element adjustment module 150 and an optical element 160 . The optical element adjustment module 150 includes a frame body 152 , a first adjustment element 154 , a second adjustment element 156 and a locking part 158 . The optical element 160 is, for example, a mirror and is disposed on the frame body 152 to reflect the illumination beam L1 (shown in FIG. 1 ) from the light source 120 to the light valve 130 . The frame body 152 has a connecting portion 152 a and is rotatably connected to the optical base 110 through the connecting portion 152 a. The connecting portion 152a is located on a first axis A1 and a second axis A2. The first adjustment element 154 is integrally connected to the frame body 152 and coaxially disposed on the first axis A1. The second adjusting element 156 is connected to the optical machine base 110 and rotatably screwed to the frame body 152 . The locking part 158 is used to pass through the frame body 152 and detachably lock on the optical machine base 110 so as to install the frame body 152 on the optical machine base 110 .

Under this arrangement, when the user wants to adjust the optical element 160, after loosening the lock attachment 158, the first adjustment element 154 can be rotated around the first axis A1 to drive the frame body 152 along the first axis A1. The axis A1 rotates relative to the optical machine base 110, and rotates the second adjustment element 156 to drive the frame body 152 to rotate relative to the optical machine base 110 around the second axis A2, whereby the optical element 160 disposed on the frame body 152 Adjust to an appropriate angle to improve the projection quality of the projection device 100 . Further, since the frame body 152 is rotatably connected to the optical base 110 through its connecting portion 152a, the frame body 152 can only rotate with the connecting portion 152a as the center of rotation when it is stressed, so that the angle of the optical element 160 The adjustment is more accurate. In addition, since the connecting portion 152a and the first adjustment element 154 are located on the first axis A1, the user can quickly and accurately rotate the first adjustment element 154 to drive the frame body 152 to rotate around the first axis A1 to lift the The convenience of the angle adjustment of the optical element 160.

In this embodiment, the first axis A1 is perpendicular to the second axis A2, and the first axis A1 and the second axis A2 are parallel to a reflective surface 162 of the optical element 160. The rotation of the axis A2 can effectively adjust the traveling direction of the illumination light beam L1 after being reflected by the optical element 160 . In addition, the second adjusting element 156 of this embodiment is screwed to the frame body 152 along a third axis A3, and the third axis A3 passes through the first axis A1, so the second adjusting element 156 drives the frame body 152 to move without The frame body 152 is driven to rotate along the first axis A1, so that the optical element 160 can be independently rotated and adjusted along the second axis A2, so as to improve adjustment efficiency and accuracy.

Please refer to FIG. 3 and FIG. 4 , in detail, the connecting portion 152a of this embodiment is a convex column, the optical base 110 has a concave hole 112, the connecting portion 152a is rotatably arranged in the concave hole 112, and the frame body 152 The connecting portion 152 a is rotatably connected to the optical base 110 through cooperation with the concave hole 112 . In addition, as shown in FIG. 4, the boss is formed on a bottom end 152b of the frame body 152, and a top end 152c of the frame body 152 has a supporting portion 152d, and the supporting portion 152d is supported on the optical machine base 110, so as to Make the overall structure more stable.

In this embodiment, the frame body 152 is made of, for example, plastic and has elastic deformation characteristics, and the supporting portion 152 d contacts with the optical-mechanical base 110 to generate structural interference. Thereby, when the support body 152 rotates to different angles around the second axis A2, the supporting portion 152d can maintain the state of contacting the optical base 110 through elastic deformation without being suspended. For example, when the overall structure is in the state shown in FIG. 4 , the supporting portion 152d is in contact with the optical base 110 and is in a state of no elastic deformation. At this time, the included angle B between the supporting portion 152d and the main body of the frame body 152 For example, it is less than 90 degrees. When the frame body 152 rotates along the second axis A2 and tilts to the right, the supporting portion 152d will elastically deform due to the structural interference with the optical base 110, so that the included angle B increases to be equal to or greater than 90° A groove 152f is provided along the intersection of the supporting portion 152d and the main body of the frame body 152, so that the supporting portion 152 has a better space for elastic deformation.

Please refer to Fig. 2 and Fig. 3, the quantity of the locking parts 158 of the present embodiment is two, and the frame body 152 has two openings 152e, and the openings 152e are respectively arranged on the two sides of the first adjusting element 154, and the locking parts 158 are respectively The frame body 152 is locked to the optical base 110 through the opening 152e, and the locking parts 158 correspond to the hole 152e and are respectively located on both sides of the first adjustment element 154, so as to securely set the frame body 152. An aperture of each opening 152e is, for example, larger than an outer diameter of each locking part 158, so that when the frame body 152 and the optical base 110 have different relative positions, the locking part 158 can smoothly pass through the opening 152e and lock. Attached to optical base 110.

Please refer to FIG. 2 and FIG. 4 , the optical element adjustment module 150 of this embodiment further includes a spring 157 and a washer 159 . The second adjusting element 156 is installed on the optical machine base 110, the gasket 159 is sleeved on the second adjusting element 156 and bears against the optical machine base 110, and the spring 157 is sleeved on the second adjusting element 156 and leans against the gasket 159 Between the frame body 152. Thereby, the relative position of the second adjusting element 156 and the optical machine base 110 can be kept unchanged by the elastic force of the spring 157, so that when the second adjusting element 156 rotates, it can effectively drive the frame body 152 to rotate relative to the optical machine base 110 .

Taking the above-mentioned projection device 100 as an example, the method for adjusting the optical element of the present invention will be described with reference to FIG. 5 . FIG. 5 is a flowchart of a method for adjusting an optical element according to an embodiment of the present invention. Please refer to FIG. 1 to FIG. 5 , the method for adjusting an optical element in this embodiment is used for adjusting the optical element 160 of the projection device 100 . First, a frame body 152 is provided. The frame body 152 has a connecting portion 152a and is rotatably connected to the optical base 110 through the connecting portion 152a. The frame body has a first axis A1 and a second axis passing through the connecting port 152a. A2, the optical element 160 is disposed on the frame body 152 (step S602). Next, at least one locking part 158 is provided, and the locking part 158 is used for disposing the frame body 152 on the optical base 110 (step S604 ). A first adjustment element 154 is provided, and the first adjustment element 154 is disposed on the frame body 152 and coaxially disposed on the first axis A1 (step S606 ). A second adjusting element 156 is provided, and the second adjusting element 156 is connected to the optical base 110 and rotatably screwed to the frame body 152 (step S608 ). The setting of the locking part 158 on the frame body 152 is released (step S610). After releasing the setting of the locking member 158 on the frame body 152 , the first adjusting member 154 is rotated around the first axis A1 to drive the frame body 152 to rotate relative to the optical base 110 along the first axis A1 (step S612 ). After releasing the setting of the locking member 158 on the frame body 152 , rotate the second adjusting member 156 to drive the frame body 152 to rotate relative to the optical base 110 around the second axis A2 (step S614 ).

The present invention does not limit the sequence of the above steps S604, S606 and S608, and does not limit the sequence of the above steps S612 and S614.

In detail, when the above step S612 is performed, for example, firstly, the frame body 152 is driven to rotate clockwise around the first axis A1. If the brightness of a projected light beam L3 projected by the projection device 100 gradually increases as the frame body 152 rotates clockwise along the first axis A1, then continue to drive the frame body 152 to rotate clockwise along the first axis A1 until the projected light beam L3 The brightness stops increasing. If the brightness of the projection beam L3 projected by the projection device 100 gradually decreases as the frame body 152 rotates clockwise along the first axis A1, the drive frame body 152 rotates counterclockwise along the first axis A1 to make the projection beam L3 The brightness of the projected light beam L3 gradually increases until the brightness of the projected light beam L3 stops increasing. In this manner, the user can adjust the angle of the optical element 160 around the first axis A1 to improve the brightness of the projected light beam L3 to an optimum state.

Similar to step S612 , when performing the above step S614 , for example, the frame body 152 is firstly driven to rotate clockwise around the second axis A2 . If the brightness of the projected light beam L3 projected by the projection device 100 gradually increases with the clockwise rotation of the frame body 152 along the second axis A2, then continue to drive the frame body 152 to rotate clockwise along the second axis A2 until the projected light beam L3 The brightness stops increasing. If the brightness of the projection beam L3 projected by the projection device 100 gradually decreases as the frame body 152 rotates clockwise along the second axis A2, the drive frame body 152 rotates counterclockwise along the second axis A2 to make the projection beam L3 The brightness of the projected light beam L3 gradually increases until the brightness of the projected light beam L3 stops increasing. In this way, the user can adjust the angle of the optical element 160 around the second axis A2 to improve the brightness of the projected light beam L3 to an optimum state.

After the frame body 152 is driven to rotate relative to the optical base 110 along the first axis A1 and the second axis A2 according to the above steps S612 and S614 to increase the brightness of the projected light beam L3 to the optimum state, the locking member 158 can The frame body 152 is disposed on the optical machine base 110 . While the frame body 152 is set on the optical base 110 by the locking part 158, the first adjusting element 154 can be pressed down along the first axis A1 to press the frame body 152 against the optical base 110, so as to avoid the 152 due to unexpected rotation or displacement when the user locks the locking accessory 158 .

To sum up, in the above embodiments of the present invention, the user can rotate the first adjustment element to drive the frame to rotate around the first axis, and can rotate the second adjustment element to drive the frame to rotate around the second axis. The center rotates, thereby adjusting the optical elements arranged on the frame to an appropriate angle, thereby improving the projection quality of the projection device. In addition, since the frame body is rotatably connected to the optical base through its connecting portion, the frame body can only rotate with the connecting portion as the center of rotation when the frame is stressed, so that the angle adjustment of the optical element is more accurate. In addition, since the connecting portion and the first adjustment element are both located on the first axis, the user can quickly and accurately rotate the first adjustment element to drive the frame to rotate along the first axis, so as to improve the convenience of angle adjustment of the optical element .

The above is only a preferred embodiment of the present invention, and should not limit the scope of the present invention with this, that is, all simple equivalent changes and modifications made according to the patent scope of the present invention and the description of the invention are still the same. It belongs to the scope covered by the patent of the present invention. In addition, any embodiment or patent scope of the present invention does not necessarily achieve all the objects or advantages or features disclosed in the present invention.

Claims (27)

1. An optical element adjustment module, which is used to adjust an optical element of a projection device, the projection device includes an optical base, and the optical element adjustment module includes: A frame body having a connecting portion and connected to the optical base through the connecting portion, wherein the frame body has a first axis and a second axis passing through the connecting portion, and the optical element is arranged on the frame body; A first adjustment element, arranged on the frame body and on the first axis, wherein when the first adjustment element is rotated, the first adjustment element drives the frame body relative to the optical machine with the first axis as the center seat rotation; and A second adjustment element, connected to the optical machine base and screwed to the frame body, wherein when the second adjustment element is rotated, the second adjustment element drives the frame body with the second axis as the center relative to the light The stand turns. 2. The optical element adjustment module according to claim 1, wherein the connecting portion is a convex post, the optical base has a concave hole, and the frame is connected to the The optical base. 3. The optical element adjustment module as claimed in claim 1, further comprising a locking part for passing through the frame body and locking on the optical machine base, and setting the frame body on the optical machine base. 4. The optical element adjustment module according to claim 3, wherein the frame body has an opening corresponding to the locking part, the locking part passes through the opening and is locked to the optical base, the opening A diameter of the hole is larger than an outer diameter of the locking part, and the locking part moves in the opening relative to the frame body. 5. The optical element adjustment module as claimed in claim 1, wherein the second adjustment element is screwed to the frame body along a third axis, and the third axis passes through the first axis. 6 . The optical element adjustment module as claimed in claim 1 , wherein the connecting portion is located at the bottom of the frame, and the top of the frame has a supporting portion, and the supporting portion leans against the optical base. 7 . 7. The optical element adjustment module according to claim 6, wherein the supporting part is rotated around the second axis by the frame body and the structural interference between the supporting part and the optical base resulting in elastic deformation. 8. The optical element adjustment module according to claim 1, further comprising: A spring, the second adjusting element passes through the optical machine base, the spring is sheathed on the second adjusting element and leans against between the optical machine base and the frame body. 9. The optical element adjustment module as claimed in claim 8, further comprising: A washer is sheathed on the second adjusting element and bears against the optical machine base, wherein the spring is leaned against between the washer and the frame body. 10. The optical element adjustment module as claimed in claim 1, wherein the optical element is a mirror. 11. The optical element adjustment module as claimed in claim 5, wherein the first axis is perpendicular to the second axis, and the first axis and the second axis are perpendicular to the third axis. 12. A projection device comprising: One optical base; An optical element adjustment module, including: A frame body having a connecting portion and connected to the optical base through the connecting portion, wherein the frame body has a first axis and a second axis passing through the connecting portion; A first adjustment element, arranged on the frame body and on the first axis, wherein when the first adjustment element rotates, the first adjustment element drives the frame body relative to the optical machine with the first axis as the center seat rotation; A second adjustment element, connected to the optical machine base and screwed to the frame, wherein when the second adjustment element is rotated, the second adjustment element drives the frame with the second axis as the center relative to the Optical base rotation; a reflective mirror arranged on the frame; a light source configured on the optical machine base and used to provide an illuminating light beam; a light valve disposed on the optical base, wherein the light valve is used to convert the illumination beam into an image beam; and A lens is arranged on the optical machine base and used for converting the image beam into a projection beam. 13. The projection device according to claim 12, wherein the connecting part is a convex post, the optical machine base has a concave hole, and the frame is connected to the optical machine by the cooperation between the connecting part and the concave hole seat. 14. The projection device as claimed in claim 12, further comprising a locking part for passing through the The frame body is locked on the optical machine base so as to set the frame body on the optical machine base. 15. The projection device as claimed in claim 13, wherein the frame body has an opening corresponding to the locking part, the locking part passes through the opening and is locked to the optical base, and one of the openings The diameter of the hole is larger than an outer diameter of the locking part, and the locking part moves in the opening relative to the frame body. 16. The projection device as claimed in claim 12, wherein the second adjustment element is screwed to the frame body along a third axis, and the third axis passes through the first axis. 17. The projection device as claimed in claim 12, wherein the protrusion is formed at a bottom end of the frame body, and a top end of the frame body has a supporting portion, and the supporting portion leans against the optical base. 18. The projection device as claimed in claim 17, wherein the support part is elastic due to the rotation of the support body around the second axis and the structural interference between the support part and the optical base out of shape. 19. The projection device as claimed in claim 12, wherein the optical element adjustment module further comprises: A spring, the second adjusting element passes through the optical machine base, the spring is sheathed on the second adjusting element and leans against between the optical machine base and the frame body. 20. The projection device as claimed in claim 19, wherein the optical element adjustment module further comprises: A washer is sheathed on the second adjusting element and bears against the optical machine base, wherein the spring is leaned against between the washer and the frame body. 21. The projection device as claimed in claim 16, wherein the first axis is perpendicular to the second axis, and the first axis and the second axis are perpendicular to the third axis. 22. A method for adjusting an optical element, for adjusting an optical element of a projection device, the projection device comprising an optical base, the method comprising: A frame body is provided, the frame body has a connecting portion and is connected to the optical base through the connecting portion, the frame body has a first axis and a second axis passing through the connecting portion, the optical element is arranged on the frame; providing a first adjustment element, the first adjustment element is arranged on the frame body and on the first axis; providing a second adjustment element, the second adjustment element is connected to the optical machine base and screwed to the frame body; rotating the first adjustment element to drive the frame body to rotate relative to the optical machine base along the first axis; and Rotate the second adjustment element to drive the frame body to rotate relative to the optical machine base with the second axis as the center. 23. The method for adjusting an optical element as claimed in claim 22, wherein the step of driving the frame to rotate relative to the optical base with the first axis as the center comprises: driving the frame body to rotate clockwise around the first axis; If the brightness of a projection light beam projected by the projection device gradually increases as the frame body rotates clockwise along the first axis, then continue to drive the frame body to rotate clockwise along the first axis; and If the brightness of the projection light beam projected by the projection device gradually decreases as the frame rotates clockwise along the first axis, the frame is driven to rotate counterclockwise along the first axis. 24. The method for adjusting an optical component as claimed in claim 22, wherein the step of driving the frame to rotate relative to the optical base along the second axis comprises: driving the frame to rotate clockwise around the second axis; If the brightness of a projection light beam projected by the projection device gradually increases as the frame body rotates clockwise along the second axis, then continue to drive the frame body to rotate clockwise along the second axis; and If the brightness of the projection light beam projected by the projection device gradually decreases as the frame rotates clockwise along the second axis, the frame is driven to rotate counterclockwise along the second axis. 25. The method of adjusting an optical element of claim 22, further comprising: providing a lock accessory for arranging the frame body on the optical machine base; After releasing the locking member from setting the frame body, the first adjusting element is rotated around the first axis to drive the frame body to rotate relative to the optical machine base along the first axis. 26. The method of adjusting an optical element of claim 25, further comprising: After the frame body is driven to rotate relative to the optical machine base around the first axis and the second axis, the frame body is arranged on the optical machine base through the locking part. 27. The method for adjusting an optical element as claimed in claim 26, further comprising: pressing down the first adjusting element along the first axis while setting the frame on the optical base by the locking member, It is used to press the frame against the optical base.

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