Adjustment module and projection device

Abstract

The utility model relates to an adjusting module for adjusting an optical element and a projector comprising the adjusting module. The adjusting module comprises a base, an adjusting seat, a first adjusting rod, a second adjusting rod and a third adjusting rod. The optical element is fixed on the adjusting seat, and the adjusting seat is located between the base and the optical element. The first adjusting rod and the second adjusting rod respectively penetrate through the base and move along the first adjusting shaft and the second adjusting shaft; the first ends of the first adjusting rod and the second adjusting rod are respectively matched in the first matching hole and the second matching hole of the adjusting seat; the third adjusting rod penetrates through the base and moves along the third adjusting shaft, and the first end of the third adjusting rod abuts against the abutting face of the adjusting base. The first to third adjusting rods, the first and second matching holes and the abutting surfaces enable the first to third adjusting shafts not to be perpendicular to the optical element, so that the arrangement space elasticity of peripheral mechanisms of the optical element is improved, and the maintenance convenience is improved.

Description

TECHNICAL FIELD

[0001] The present utility model relates to an adjustment module and a projection device, and particularly to an adjustment module capable of adjusting the setting position and the setting angle of an optical element and a projection device using the adjustment module. BACKGROUND

[0002] When the optical element in the projection device is an adjustable element, the optical element is currently placed on a holder, and the holder is locked with a positioning element through an adjustment rod. When maintenance or calibration is performed, the angle or position of the optical element can be adjusted by rotating the adjustment rod relative to the positioning element. The screw hole axis of the adjustment rod and the setting angle of the adjustment rod are generally perpendicular to the optical element, that is, the screw hole axis is parallel to the preset normal line of the optical element. Therefore, the more inclined the design value of the optical element is, the more inclined the corresponding adjustment tool will be, thereby causing the following two problems. 1) Space for the adjustment tool to pass through must be reserved near the optical element placed in an inclined manner in the projection device, and a mechanism component cannot be designed to be placed; otherwise, when the optical element is adjusted, the mechanism component must be removed first, and after the optical element is adjusted, the mechanism component is installed again, which causes waste of space utilization or increases the difficulty of maintenance operation. 2) When the adjustment tool is used to rotate the adjustment rod, it needs to be operated at an inclined angle, which is not friendly to maintenance personnel, and the adjustment time may be relatively long.

[0003] The "BACKGROUND" section is only used to explain the understanding of the content of the present utility model, and therefore the content disclosed in the "BACKGROUND" section may include some known technologies that are not known to those skilled in the art. The content disclosed in the "BACKGROUND" section does not represent the problems to be solved by the content or one or more embodiments of the present utility model, and has been known or recognized by those skilled in the art before the present utility model application. UTILITY MODEL CONTENT

[0004] The present utility model provides an adjustment module for adjusting the setting position and the setting angle of an optical element, which can have better maintenance convenience.

[0005] The present utility model also provides a projection device including the above-mentioned adjustment module, which can have better projection quality.

[0006] Other purposes and advantages of the present utility model can be further understood from the technical features disclosed in the present utility model.

[0007] To achieve one or some or all of the above-mentioned purposes or other purposes, an embodiment of the present application provides an adjusting module for adjusting a setting position and a setting angle of an optical element. The adjusting module comprises a base, an adjusting seat, a first adjusting rod, a second adjusting rod and a third adjusting rod. The optical element is fixed on the adjusting seat, and the adjusting seat is located between the base and the optical element. The adjusting seat has a first matching hole, a second matching hole and an abutting surface. The first adjusting rod is movably arranged in the base and is used for moving along a first adjusting axis. A first end of the first adjusting rod is arranged in and matched with the first matching hole of the adjusting seat. The second adjusting rod is movably arranged in the base and is used for moving along a second adjusting axis. A first end of the second adjusting rod is arranged in and matched with the second matching hole. The third adjusting rod is movably arranged in the base and is used for moving along a third adjusting axis. A first end of the third adjusting rod abuts against the abutting surface of the adjusting seat. When at least one of the first adjusting rod, the second adjusting rod and the third adjusting rod moves along the corresponding adjusting axis, the adjusting seat and the optical element move or swing relative to the base. The first adjusting axis, the second adjusting axis and the third adjusting axis respectively have an included angle with a normal direction of the optical element, and the included angle is not 0.

[0008] To achieve one or some or all of the above-mentioned purposes or other purposes, an embodiment of the present application provides a projection device. The projection device comprises a light source, an optical element, an adjusting module as described above, a light valve and a projection lens. The light source is used for providing an illumination light beam. The adjusting module is arranged on a transmission path of the illumination light beam and is used for adjusting a setting position or a setting angle of the optical element. The light valve is arranged on the transmission path of the illumination light beam and is used for converting the illumination light beam into an image light beam. The projection lens is arranged on a transmission path of the image light beam and is used for projecting the image light beam out of the projection device.

[0009] Based on the above, the embodiments of the utility model have at least one of the following advantages or functions. In the adjusting module of the utility model, when at least one of the first adjusting rod, the second adjusting rod and the third adjusting rod moves along the corresponding adjusting axis, the adjusting seat and the optical element move or swing relative to the base, wherein the first adjusting axis, the second adjusting axis and the third adjusting axis have an included angle with the normal direction of the optical element. That is, the adjusting axis direction of the first adjusting rod, the second adjusting rod and the third adjusting rod is not limited to being perpendicular to the optical element. By virtue of the flexible design, the setting direction of the first adjusting rod, the second adjusting rod and the third adjusting rod can be configured to not interfere with other mechanism members in the extension direction, so that the maintenance personnel can directly use the external adjusting tool to cooperate with the adjusting module after opening the upper cover of the projection device, and the adjusting module can be directly adjusted, so that the optical element can be displaced to the optimized position to have better optical efficiency. Furthermore, since other mechanism members do not need to be removed, the design of the adjusting module of the utility model can solve the problems of space utilization waste and difficult operation in the prior art, and can improve the maintenance convenience. In addition, the projection device adopting the adjusting module of the utility model can have better projection quality.

[0010] In order to make the above features and advantages of the utility model more obvious and easy to understand, the following embodiments are described in detail below, and the drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0011] FIG. 1A is a block schematic diagram of a projection device according to an embodiment of the utility model.

[0012] FIG. 1B is FIG. 1A a top view schematic diagram of the inside of the projection device.

[0013] FIG. 2A is FIG. 1A a three-dimensional schematic diagram of the adjusting module of the projection device.

[0014] FIG. 2B is FIG. 2A a three-dimensional schematic diagram of the adjusting module at another viewing angle.

[0015] FIG. 2C is FIG. 2A a three-dimensional schematic diagram of the adjusting module cooperating with the external adjusting tool.

[0016] FIG. 2D is a sectional view along the line I-I of FIG. 2C .

[0017] FIG. 2E is a sectional view along the line II-II of FIG. 2C .

[0018] FIG. 2F For FIG. 2A The perspective view of the base is omitted for the adjustment module.

[0019] FIG. 3A to FIG. 3B The cross-sectional view of the adjustment seat and the optical element before and after moving or swinging relative to the base.

[0020] FIG. 3C to FIG. 3D The cross-sectional view of the adjustment seat and the optical element before and after moving or swinging relative to the base.

[0021] Explanation of reference signs:

[0022] 10: projection device

[0023] 12: light source

[0024] 14: optical element

[0025] 16: light valve

[0026] 18: projection lens

[0027] 19A, 19B: other mechanism parts

[0028] 22, 24, 26: external adjustment tool

[0029] 23, 25, 27: clamping structure

[0030] 100: adjustment module

[0031] 110: base

[0032] 111: first surface

[0033] 112: first threaded hole

[0034] 113: second surface

[0035] 114: second threaded hole

[0036] 116: third threaded hole

[0037] 120: adjustment seat

[0038] 121: arrangement surface

[0039] 122: first fitting hole

[0040] 122A: opening

[0041] 123: bonding surface

[0042] 124: second fitting hole

[0043] 124A: opening

[0044] 126: abutment surface

[0045] 127: first compression spring

[0046] 128: second compression spring

[0047] 129: third compression spring

[0048] 130: first adjustment rod

[0049] 131: first end

[0050] 133: second end

[0051] 140: second adjustment rod

[0052] 141: first end

[0053] 143: second end

[0054] 150: third adjustment rod

[0055] 151: first end

[0056] 153: second end

[0057] A: imaginary circle

[0058] C: preset center

[0059] C1: first connecting line

[0060] C2: second connecting line

[0061] D1: first direction

[0062] D2: second direction

[0063] G1, G2, G3, G4: interval

[0064] H: horizontal plane

[0065] L1: illumination light beam

[0066] L2: image light beam

[0067] N: normal direction

[0068] P: positioning groove

[0069] B: positioning protrusion

[0070] X1: first adjustment axis

[0071] X2: second adjustment axis

[0072] X3: third adjustment axis

[0073] T1, T2, T3: adjustment tool engagement structure

[0074] W11, W21: curved outer wall

[0075] W12, W22: curved inner wall

[0076] W13, W23: flat top surface

[0077] W3: convex curved surface. DETAILED DESCRIPTION

[0078] The foregoing and other technical contents, features and effects of the present application will be clearly presented in the following detailed description of a preferred embodiment in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, are only the directions of the drawings. Therefore, the directional terms are used to illustrate and not to limit the present application.

[0079] FIG. 1A is a block diagram of a projection device according to an embodiment of the present application. FIG. 1B is a top view of the internal structure of the projection device, i.e. the state after removing the upper cover of the projection device.

[0080] Please refer to FIG. 1A and FIG. 1B In the present embodiment, the projection device 10 comprises a light source device 12, an optical element 14, an adjustment module 100, a light valve 16 and a projection lens 18. The light source device 12 is used to provide an illumination light beam L1. The optical element 14 is arranged on the adjustment module 100 and located on the transmission path of the illumination light beam L1. The adjustment module 100 is used to adjust the setting position and the setting angle of the optical element 14, thereby changing the transmission direction of the illumination light beam L1. The light valve 16 is arranged on the transmission path of the illumination light beam L1, and is used to convert the illumination light beam L1 into an image light beam L2. The projection lens 18 is arranged on the transmission path of the image light beam L2, and is used to project the image light beam L2 out of the projection device 10.

[0081] In detail, the light source device 12 includes at least one light emitting diode and / or at least one laser diode, for example, and the light source device 12 is a laser diode bank, for example. In particular, any light source that meets the volume requirement of the actual design can be implemented, and the present application is not limited thereto. The optical element 14 is a mirror or an element having a light reflecting function, for example. The light valve 16 is a reflective light modulator such as a liquid crystal on silicon panel (LCOS panel), a digital micro-mirror device (DMD), etc. In an embodiment, the light valve 16 is a transmissive light modulator such as a transparent liquid crystal panel, an electro-optical modulator, a magneto-optic modulator, an acousto-optic modulator (AOM), etc., but the present embodiment is not limited to the type and kind of the light valve 16. The projection lens 18 is disposed on the transmission path of the image light beam L2, and is used to project the image light beam L2 out of the projector 10. The projection lens 18 includes one or more combinations of optical lenses having refractive power, such as various combinations of aspherical lenses including biconcave lenses, biconvex lenses, concave-convex lenses, convex-concave lenses, plano-convex lenses, and plano-concave lenses, etc. In an embodiment, the projection lens 18 can also include planar optical lenses to reflect or transmit the image light beam L2 from the light valve 16 out of the projector 10. In this regard, the present embodiment is not limited to the type and kind of the projection lens 18.

[0082] FIG. 2A is FIG. 1A a perspective view of an adjustment module of the projection device. FIG. 2B is FIG. 2A a perspective view of the adjustment module of FIG. 2C from another angle. FIG. 2A is FIG. 2D a perspective view of the adjustment module of FIG. 2C in cooperation with an external adjustment tool. FIG. 2E is FIG. 2C a sectional view along the line I-I of FIG. 2F . FIG. 2A is a sectional view along the line II-II of

[0083] . FIG. 2A , FIG. 2B , FIG. 2C , FIG. 2D andFIG. 2EIn the embodiment, the adjustment module 100 includes a base 110, an adjustment seat 120, a first adjustment rod 130, a second adjustment rod 140, and a third adjustment rod 150. The optical element 14 is fixed on the adjustment seat 120, which is between the base 110 and the optical element 14. The adjustment seat 120 has a first matching hole 122, a second matching hole 124, and an abutting surface 126. The first adjustment rod 130 is movably arranged in the base 110 and is used to move along the first adjustment axis X1. The first end 131 of the first adjustment rod 130 is arranged in and matched with the first matching hole 122 of the adjustment seat 120, and the widest diameter of the first end 131 of the first adjustment rod 130 is greater than the diameter of the opening 122A of the first matching hole 122 close to the matching surface 123. When the first end 131 of the first adjustment rod 130 is arranged in the first matching hole 122, the first end 131 of the first adjustment rod 130 is blocked by the circumference of the opening 122A of the first matching hole 122, so that the first adjustment rod 130 cannot move away from the first matching hole 122 along the first adjustment axis X1 towards the base 110. When the first adjustment rod 130 moves along the first adjustment axis X1, the first end 131 of the first adjustment rod 130 presses the circumference of the opening 122A of the first matching hole 122 in the direction of the base 110, thereby moving the adjustment seat 120 and the optical element 14. The second adjustment rod 140 is movably arranged in the base 110 and is used to move along the second adjustment axis X2. The first end 141 of the second adjustment rod 140 is arranged in and matched with the second matching hole 124, and the widest diameter of the first end 141 of the second adjustment rod 140 is greater than the diameter of the opening 124A of the second matching hole 124 close to the matching surface 123. When the first end 141 of the second adjustment rod 140 is arranged in the second matching hole 124, the first end 141 of the second adjustment rod 140 is blocked by the circumference of the narrowest part of the opening 124A of the second matching hole 124, so that the second adjustment rod 140 cannot move away from the second matching hole 124 along the second adjustment axis X2 towards the base 110. When the second adjustment rod 140 moves along the second adjustment axis X2, the first end 141 of the second adjustment rod 140 presses the circumference of the opening 124A of the second matching hole 124 in the direction of the base 110, thereby moving the adjustment seat 120 and the optical element 14. The third adjustment rod 150 is movably arranged in the base 110 and is used to move along the third adjustment axis X3. The first end 151 of the third adjustment rod 150 abuts against the abutting surface 126 of the adjustment seat 120. When the third adjustment rod 150 moves along the third adjustment axis X3, it pushes the abutting surface 126 of the adjustment seat 120, thereby moving the adjustment seat 120 and the optical element 14. When at least one of the first adjustment rod 130, the second adjustment rod 140, and the third adjustment rod 150 moves along the corresponding adjustment axis, the adjustment seat 120 and the optical element 14 move or swing relative to the base 110.The first adjustment axis X1, the second adjustment axis X2 and the third adjustment axis X3 each has an included angle with the normal direction N of the optical element 14. Taking the optical element 14 as an example of a plane mirror, the normal direction N is an axial direction perpendicular to the reflecting surface of the mirror.

[0084] In other words, the first adjustment rod 130, the second adjustment rod 140 and the third adjustment rod 150 each penetrates the base 110 and has a first end 131, 141, 151 facing the adjustment seat 120. The first ends 131, 141 of the first adjustment rod 130 and the second adjustment rod 140 are arranged in the first matching hole 122 and the second matching hole 124 of the adjustment seat 120 to apply force to the adjustment seat 120, and the first end 151 of the third adjustment rod 150 abuts against the abutting surface 126 of the adjustment seat 120 to apply force to the adjustment seat 120. Further, the first adjustment rod 130, the second adjustment rod 140 and the third adjustment rod 150 are not perpendicular to the optical element 14.

[0085] More specifically, the base 110 has a first surface 111 and a second surface 113 opposite the first surface 111, and has a first screw hole 112, a second screw hole 114 and a third screw hole 116 penetrating the first surface 111 and the second surface 113. The first screw hole 112 penetrates the base 110 along the first adjustment axis X1, and the first adjustment rod 130 is arranged in the first screw hole 112. The second screw hole 114 penetrates the base 110 along the second adjustment axis X2, and the second adjustment rod 140 is arranged in the second screw hole 114. The third screw hole 116 penetrates the base 110 along the third adjustment axis X3, and the third adjustment rod 150 is arranged in the third screw hole 116. The adjustment seat 120 is arranged on the first surface 111 of the base 110. Please refer to FIGS. 1A, 1B, 2A and 2B. FIG. 2A 2D In an embodiment, the extension line of the first adjustment axis X1 passes through the preset center C of the optical element 14. The first screw hole 112 is arranged at a position corresponding to the preset center C of the optical element 14, i.e., the axial extension line of the first screw hole 112 intersects with the preset center C of the optical element 14. In this way, the first adjustment rod 130, the second adjustment rod 140 and the third adjustment rod 150 can rotate in or rotate out relative to the first surface 111 of the base 110.

[0086] Further, please refer to FIGS. 1A, 1B, 2A and 2B. FIG. 2B FIG. 2D FIG. 2E The connecting line between the arrangement position of the first screw hole 112 on the base 110 and the arrangement position of the second screw hole 114 on the base 110 is the first connecting line C1. The connecting line between the arrangement position of the first screw hole 112 on the base 110 and the arrangement position of the third screw hole 116 on the base 110 is the second connecting line C2. At this time, the first connecting line C1 is different from the second connecting line C2. ​​​

[0087] The adjustment seat 120 has a configuration surface 121 and a joint surface 123 opposite to the configuration surface 121. The configuration surface 121 is used to configure the optical element 14. The joint surface 123 is towards the first surface 111 of the base 110, and the optical element 14 is fixed on the configuration surface 121. The optical element 14 can be fixed on the configuration surface 121, for example, by clamping means, but the utility model is not limited thereto, for example, the optical element 14 can also be fixed on the configuration surface 121 by locking, buckling or adhesion and the like. The center axes of the first and second matching holes 122 and 124 are not perpendicular to the configuration surface 121. The abutting surface 126 is formed protruding from the joint surface 123 towards the first surface 111 of the base 110 and is not parallel to the configuration surface 121.

[0088] Furthermore, please refer to FIG. 2D , FIG. 2E and FIG. 2F, the adjustment module 120 further comprises a first compression spring 127, a second compression spring 128 and a third compression spring 129. The first compression spring 127 is disposed between the base 110 and the adjustment seat 120 and is sleeved on the first adjustment rod 130. One end of the first compression spring 127 is in abutment with the first surface 111 of the base 110, and the other end is in abutment with the combination surface 123 of the adjustment seat 120, so as to apply a pushing force to the periphery of the first matching hole 122 of the adjustment seat 120 away from the first surface 111 of the base, so that the first matching hole 122 and the first end 131 of the first adjustment rod 130 are kept in close contact. The second compression spring 128 is disposed between the base 110 and the adjustment seat 120 and is sleeved on the second adjustment rod 140. One end of the second compression spring 128 is in abutment with the first surface 111 of the base 110, and the other end is in abutment with the combination surface 123 of the adjustment seat 120, so as to apply a pushing force to the periphery of the second matching hole 124 of the adjustment seat 120, so that the second matching hole 124 and the first end 141 of the second adjustment rod 140 are kept in close contact. The third compression spring 129 is disposed between the base 110 and the adjustment seat 120. The combination surface 123 of the adjustment seat 120 is formed with a positioning groove P, and the first surface 111 of the base 110 is formed with a positioning protrusion B protruding towards the positioning groove P at a position corresponding to the positioning groove P. The position of the positioning groove P is such that the first matching hole 122 is located between the positioning groove P and the abutment surface 126, in other words, the positioning groove P, the first matching hole 122 and the abutment surface 126 are sequentially arranged in a substantially straight line at the formed position of the adjustment seat 120. One end 129a of the third compression spring 129 is arranged in the positioning groove P and is in abutment with the bottom of the positioning groove P, and the other end is sleeved outside the positioning protrusion B of the base 110 and is in abutment with the first surface 111 around the positioning protrusion B. The positioning groove P and the positioning protrusion B have a positioning effect on the third compression spring 128. The third compression spring 129 applies a pushing force to the positioning groove P of the adjustment seat 120 away from the first surface 111 of the base 110, so that the abutment surface 126 of the adjustment seat 120 located on the other side of the first matching hole 122 is kept in close contact with the first end 151 of the third adjustment rod 150.

[0089] Please refer to FIG. 2D and FIG. 2EThe outer wall shape of the first end 131 of the first adjustment rod 130 matches the inner wall shape of the first fitting hole 122 of the adjustment seat 120. The first adjustment rod 130 is mainly used to apply a pulling force in the first direction D1 to the first fitting hole 122 along the first adjustment axis X1 to pull the adjustment seat 120 close to the base 110 (for example, when the first adjustment rod 130 is moved relative to the first surface 111 of the base 110). In other words, in an embodiment, the first adjustment rod 130 is a pull rod. The first adjustment rod 130 has a second end 133 opposite the first end 131, and the first end 131 has an arc-shaped outer wall W11 that gradually expands away from the second end 133, and the first fitting hole 122 has an arc-shaped inner wall W12 that gradually narrows from the arrangement surface 121 to the joint surface 123. The arc-shaped outer wall W11 of the first adjustment rod 130 slidably matches the arc-shaped inner wall W12 of the first fitting hole 122, so that the first adjustment rod 130 has a first swing angle range relative to the joint surface 123 of the adjustment seat 120. And because the radial width of at least part of the arc-shaped outer wall W11 is greater than the radial width of the narrowest part of the arc-shaped inner wall W12 of the first fitting hole 122, the first end 131 of the first adjustment rod 130 is limited by the arc-shaped inner wall W12 of the first fitting hole 12 and cannot leave the first fitting hole 122 from the joint surface 123, that is, the first end 131 of the first adjustment rod 130 cannot leave the opening 122A of the first fitting hole 122. In addition, the first end 131 of the first adjustment rod 130 also has a flat top surface W13 connected to the end edge of the arc-shaped outer wall W11 away from the second end 131. In short, the first end 131 of the first adjustment rod 130 and the fitting hole 124 are a ball and hole fit.

[0090] In addition, please refer to FIG. 2B to FIG. 2E The first adjustment rod 130 of the adjustment module 100 is also used in cooperation with the engagement structure 23 of the external adjustment tool 22 to allow the user to operate the first adjustment rod 130. The second end 133 of the first adjustment rod 130 is exposed to the second surface 113 of the base 110 and has an adjustment tool engagement structure T1 for engaging with the engagement structure 23 of the external adjustment tool 22, wherein the adjustment tool engagement structure T1 can be, for example, an outer hexagonal column structure as shown in FIG. 2B to FIG. 2E , but the present application is not limited thereto. For example, the adjustment tool engagement structure T1 can be, for example, an outer quadrangular column structure, an internal hexagonal groove structure, a cross groove structure, a slot structure, or other appropriate structures that can engage with the external adjustment tool 22 to operate the first adjustment rod 130.

[0091] The cooperation between the second adjustment rod 140 and the second fitting hole 124 is similar to the cooperation between the first adjustment rod and the first fitting hole 12, which will be described in detail below.

[0092] Please refer to FIG. 2D and FIG. 2E The outer wall shape of the first end 141 of the second adjustment rod 140 matches the inner wall shape of the second matching hole 124 of the adjustment seat 120. The first end 141 of the second adjustment rod 140 is mainly used to apply a pulling force in the first direction D1 to the second matching hole 124 along the second adjustment axis X2, so as to pull the adjustment seat 120 close to the base 110 (for example, when the second adjustment rod 140 is moved relative to the first surface 111 of the base 110). In other words, in an embodiment, the second adjustment rod 140 is a pull rod. The second adjustment rod 140 has a second end 143 opposite the first end 141 of the second adjustment rod 140, and the first end 141 has an arc-shaped outer wall W21 that gradually expands away from the second end 143 of the second adjustment rod 140, and the second matching hole 124 has an arc-shaped inner wall W22 that gradually narrows from the arrangement surface 121 to the joint surface 123. The arc-shaped outer wall W21 of the second adjustment rod 140 and the arc-shaped inner wall W22 of the second matching hole 124 are slidably matched, so that the second adjustment rod 140 has a second swing angle range (i.e. the angle range of swinging along the first connecting line C1) relative to the joint surface 123 of the adjustment seat 120. And because the radial width of at least part of the arc-shaped outer wall W21 is greater than the radial width of the narrowest part of the arc-shaped inner wall W22 of the second matching hole 124, the first end 141 of the second adjustment rod 140 is limited by the arc-shaped inner wall W22 of the second matching hole 124 and cannot leave the second matching hole 124 from the joint surface 123, that is, the first end 141 of the second adjustment rod 140 cannot leave the opening 124A of the second matching hole 124. In addition, the first end 141 of the second adjustment rod 140 also has a flat top surface W23 connected to the end edge away from the second end 143 of the arc-shaped outer wall W21. In short, the first end 141 of the second adjustment rod 140 and the matching hole 124 are a kind of ball hole matching.

[0093] In addition, please refer to FIG. 2B to FIG. 2E The second adjustment rod 140 of the adjustment module 100 is also provided with a clamping structure 25 matched with the external adjustment tool 24 for the user to operate the second adjustment rod 140. The second end 143 of the second adjustment rod 140 is exposed to the second surface 113 of the base 110 and has an adjustment tool clamping structure T2 matched with the clamping structure 25 of the external adjustment tool 24, wherein the adjustment tool clamping structure T2 can be, for example, an outer hexagonal column structure as shown in the figure, but the present application is not limited thereto. For example, the adjustment tool clamping structure T1 can be, for example, an outer quadrangular column structure, an inner hexagonal groove structure, a cross groove structure, a one-groove structure or other appropriate structure that can be matched with the external adjustment tool 22 to operate the second adjustment rod 140. FIG. 2B

[0094] ​It should be noted that when the first adjustment rod 130 or the second adjustment rod 140 is moved in a second direction D2 opposite to the first direction D1 (for example, the first adjustment rod 130 or the second adjustment rod 140 is moved in a screw-in direction relative to the first surface 111 of the base 110), the first adjustment rod 130 or the second adjustment rod 140 does not apply a pulling force to the adjustment seat 120. At this time, the first compression spring 127 or the second compression spring 128 applies a pushing force in the second direction D2 to the adjustment seat 120 to move or swing the adjustment seat 102, so that the first fitting hole 122 or the second fitting hole 124 remains in contact with the first end 131 of the first adjustment rod 130 or the first end 141 of the second adjustment rod 140, and thereby adjusts the optical element 14.

[0095] The first end 151 of the third adjustment rod 150 abuts against the abutting surface 126 of the adjustment seat 120. In an embodiment, the third adjustment rod 150 is mainly used to apply a pushing force to the adjustment seat 120 by the abutting surface 126 to push away from the base 110, in other words, the third adjustment rod 150 is a push rod. The first end 151 of the third adjustment rod 150 includes an outer convex curved surface W3, and the outer convex curved surface W3 is tangent to the abutting surface 126 of the adjustment seat 120. In an embodiment, the outer convex curved surface W3 is, for example, a hemispherical surface.

[0096] The third adjustment rod 150 has a second end 153 opposite to the first end 151 of the third adjustment rod 150. In addition, the third adjustment rod 150 of the adjustment module 100 is provided for cooperation with the engagement structure 27 of the external adjustment tool 26. The second end 153 of the third adjustment rod 150 has an adjustment tool engagement structure T3 for engaging with the engagement structure 27 of the external adjustment tool 26, wherein the adjustment tool engagement structure T3 can be, for example, an outer hexagonal column structure, a cross recess, a slot recess or other appropriate structure.

[0097] Please continue to refer to FIG. 2B to FIG. 2E When the second adjustment rod 140 is adjusted in the screw-out direction or the screw-in direction to move the second adjustment rod 140 in the first direction D1 or the second direction D2, the adjustment seat 12 swings about the line connecting the first fitting hole 122 and the abutting surface 126 (approximately parallel to the second line C2), thereby driving the optical element 14 to change the angle; when the third adjustment rod 150 is adjusted in the screw-out direction or the screw-in direction to move the third adjustment rod 150 in the first direction D1 or the second direction D2, the adjustment seat 12 generates a swing about the line connecting the first fitting hole 122 and the second fitting hole 124 (approximately parallel to the first line C1), thereby driving the optical element 14 to change the angle.

[0098] Please refer to FIG. 1BIt should be noted that, in order to allow maintenance personnel to directly use external adjustment tools 22, 24, and 26 in conjunction with the adjustment module 100 to adjust the optical element 14 after opening the housing of the projector 10 without interference from other components 19A and 19B, it is preferable that the first adjustment lever 130, the second adjustment lever 140, and the third adjustment lever 150 in the projector 10 extend into the space between the extension of the second surface 113 away from the base 110 and the housing of the projector 10 (e.g., FIG. 1B The area between adjustment tools 22, 24, and 26 is a cavity, or, please refer to the following: FIG. 2A This creates a cavity between the second end 133 of the first adjusting rod 130, the second end 143 of the second adjusting rod 140, and the second end 153 of the third adjusting rod 150 and the housing of the projection device 10. That is, there are no other mechanical components 19A and 19B in this space, so maintenance personnel do not need to remove other mechanical components 19A and 19B before adjusting the optical element 14. FIG. 1B In the middle, other components 19A are, for example, heat dissipation modules, and other components 19B are, for example, motherboards.

[0099] Furthermore, according to the adjustment module 100 of this invention, the angles between the first adjustment rod 130, the second adjustment rod 140, and the third adjustment rod 150 and the optical element 14 do not need to be perpendicular. The directions of the first to third adjustment axes X1, X2, and X3 can be adjusted according to the configuration of other components 19 of the projection device 10. Therefore, the design and configuration of the cavity can be more flexible or the required cavity size can be reduced. The adjustment module 100 of this embodiment solves the problems of wasted space utilization and difficult operation in the prior art, and improves maintenance convenience.

[0100] Please refer to 2D and FIG. 2E .like FIG. 2D As shown, when the first end 131 of the first adjusting rod 130 (corresponding to the preset center C of the optical element 14) is fixed, and the second adjusting rod 140 is moved in the screw-in or screw-out direction to adjust the optical element 14, the movement trajectory of the first end 141 of the second adjusting rod 140 (coinciding with the second adjusting axis X2) is close to the tangent of an imaginary sphere A, which has the first end 131 of the first adjusting rod 130 (corresponding to the preset center C of the optical element 14) as its center; FIG. 2EAs shown, when the first adjusting rod 130 is fixed and the third adjusting rod 150 is moved in the screw-in direction or the screw-out direction to adjust the optical element 14, the movement track of the first end 151 of the third adjusting rod 150 (coinciding with the third adjusting axis X3) deviates from the tangent plane of the imaginary sphere A and is not parallel, so that the third adjusting axis X3 of the third adjusting rod 150 and the abutting surface 126 of the adjusting seat 120 generate a relatively large angle change, and thus the third adjusting rod 150 cooperates with the abutting surface 126 of the adjusting seat 120 in the outward convex camber W3, thereby allowing a relatively large relative angle change.

[0101] Further, when the first end 131 of the first adjusting rod 130 is fixed and the second adjusting rod 140 is adjusted, the movement path of the second adjusting rod 140 moves along the tangent plane of the imaginary sphere A, and at this time, the contact point of the third adjusting rod 150 and the abutting surface 126 of the adjusting seat 120 deviates from the tangent plane of the imaginary sphere A, so that the first end 151 of the third adjusting rod 150 and the contact point of the abutting surface 126 of the adjusting seat 120 must be designed as the outward convex camber W3, so that the contact point of the third adjusting rod 150 and the abutting surface 126 of the adjusting seat 120 can have a larger relative rotation angle or movement range, thereby avoiding that the third adjusting rod 150 and the adjusting seat 120 interfere with each other when the second adjusting rod 140 is adjusted, and thus increasing the adjustment resistance or failing to adjust.

[0102] The following further describes the simultaneous adjustment of the first adjusting rod 130 and the second adjusting rod 140 or the first adjusting rod 130 and the third adjusting rod 150, so that the adjusting seat 120 and the base 110 generate a relative distance change.

[0103] FIG. 3A A cross-sectional view of the first adjusting rod 130 and the second adjusting rod 140 in a relatively close adjustment state of the adjusting seat 120 and the base 110; FIG. 3B A cross-sectional view of the first adjusting rod 130 and the second adjusting rod 140 in a relatively far adjustment state of the adjusting seat 120 and the base 110.

[0104] As shown in FIG. 6, when the first adjusting rod 130 is fixed and the third adjusting rod 150 is moved in the screw-in direction or the screw-out direction to adjust the optical element 14, the movement track of the first end 151 of the third adjusting rod 150 (coinciding with the third adjusting axis X3) deviates from the tangent plane of the imaginary sphere A and is not parallel, so that the third adjusting axis X3 of the third adjusting rod 150 and the abutting surface 126 of the adjusting seat 120 generate a relatively large angle change, and thus the third adjusting rod 150 cooperates with the abutting surface 126 of the adjusting seat 120 in the outward convex camber W3, thereby allowing a relatively large relative angle change. FIG. 3A As shown in FIG. 7, when the first adjusting rod 130 is fixed and the third adjusting rod 150 is moved in the screw-in direction or the screw-out direction to adjust the optical element 14, the movement track of the first end 151 of the third adjusting rod 150 (coinciding with the third adjusting axis X3) deviates from the tangent plane of the imaginary sphere A and is not parallel, so that the third adjusting axis X3 of the third adjusting rod 150 and the abutting surface 126 of the adjusting seat 120 generate a relatively large angle change, and thus the third adjusting rod 150 cooperates with the abutting surface 126 of the adjusting seat 120 in the outward convex camber W3, thereby allowing a relatively large relative angle change. FIG. 3B As shown in FIG. 6 and FIG. 7, by adjusting the first adjusting rod 130 and the second adjusting rod 140, the distance between the first surface 111 of the base 110 and the combined surface 123 of the adjusting seat 120 can be changed between the interval G1 as shown in FIG. 6 and the interval G2 as shown in FIG. 7. FIG. 3A FIG. 3B

[0105] FIG. 3C A cross-sectional view of the first adjusting rod 130 and the third adjusting rod 15 in another relatively close adjustment state of the adjusting seat 120 and the base 110; FIG. 3D ​​This is a cross-sectional schematic diagram showing the first adjusting rod 130 and the third adjusting rod 15 adjusting the adjusting seat 120 and the base 110 in another, more distant adjustment state.

[0106] Depend on FIG. 3C and FIG. 3D It can be seen that by adjusting the first adjusting rod 130 and the third adjusting rod 15, the distance between the first surface 111 of the base 110 and the mating surface 123 of the adjusting seat 120 can be adjusted as follows: FIG. 3C The spacing G3 and such FIG. 3D The spacing between G4 varies.

[0107] In summary, this utility model, by using ball-and-hole fittings between the first adjusting rod 130, the second adjusting rod 140 and the first mating holes 122 and 124, and by setting the third adjusting rod 150 and the contact surface 126 to be both arc-shaped and flat, allows the first adjusting rod 130, the second adjusting rod 140 and the third adjusting rod 150 to effectively adjust the optical element 14 without being perpendicular to it. This significantly increases the design range of the angle between the first adjusting rod 130, the second adjusting rod 140 and the third adjusting rod 150 and the optical element 14. Therefore, external adjustment tools 22, 24, and 26 do not need to be perpendicular to the optical element 14 when operating with the first adjusting rod 130, the second adjusting rod 140 and the third adjusting rod 150. In other words, even if the design angle of the optical element 14 is parallel to the top cover of the projector (parallel to...), the adjustment can still be made more precise. FIG. 1B The paper surface has a large tilt angle, and the external adjustment tools 22, 24, and 26 can also adjust the optical element 14 at an angle close to perpendicular to the top cover of the projector, which can improve the problems of wasted space utilization and difficult operation caused by the tilted adjustment rod in the prior art.

[0108] The above description is merely a preferred embodiment of this utility model and should not be construed as limiting the scope of this utility model. Any simple equivalent changes and modifications made in accordance with the claims and content of this utility model shall still fall within the scope of this utility model patent. Furthermore, no embodiment or claim of this utility model needs to achieve all the objectives, advantages, or features disclosed in this utility model. In addition, the abstract and title (utility model name) are only used to assist in patent document retrieval and are not intended to limit the scope of this utility model. Furthermore, the terms "first," "second," etc., mentioned in this specification or claims are only used to name elements or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of elements.

Claims

1. An adjustment module for adjusting a set position and a set angle of an optical element, characterized in that The adjustment module comprises a base, an adjustment seat, a first adjustment rod, a second adjustment rod and a third adjustment rod, wherein: The optical element is fixed to the adjustment seat, and the adjustment seat is located between the base and the optical element; The adjustment seat has a first matching hole, a second matching hole and an abutting surface; The first adjustment rod is movably arranged in the base along a first adjustment axis, and a first end of the first adjustment rod is arranged in and matched with the first matching hole of the adjustment seat; The second adjustment rod is movably arranged in the base along a second adjustment axis, and a first end of the second adjustment rod is arranged in and matched with the second matching hole; The third adjustment rod is movably arranged in the base along a third adjustment axis, and a first end of the third adjustment rod abuts against the abutting surface of the adjustment seat; wherein, When at least one of the first adjustment rod, the second adjustment rod and the third adjustment rod moves along the corresponding adjustment axis, the adjustment seat and the optical element move or swing relative to the base; and The first adjustment axis, the second adjustment axis and the third adjustment axis respectively have a non-zero included angle with the normal direction of the optical element.

2. The adjustment module of claim 1, wherein, The base has a first surface and a second surface opposite to the first surface, and has a first screw hole, a second screw hole and a third screw hole penetrating through the first surface and the second surface, the first screw hole penetrates through the base along the first adjustment axis, the first adjustment rod is arranged in the first screw hole, the second screw hole penetrates through the base along the second adjustment axis, the second adjustment rod is arranged in the second screw hole, the third screw hole penetrates through the base along the third adjustment axis, the third adjustment rod is arranged in the third screw hole, and the adjustment seat is arranged on the first surface of the base.

3. The adjustment module of claim 2, wherein, When the first adjustment rod is rotated to move in a first direction along the first adjustment axis, the first end of the first adjustment rod pushes against the first matching hole to drive the adjustment seat to move towards the first surface of the base; when the second adjustment rod is rotated to move in the first direction along the second adjustment axis, the first end of the second adjustment rod pushes against the second matching hole to drive the adjustment seat to move towards the first surface of the base; when the third adjustment rod is rotated to move in a second direction along the third adjustment axis, the first end of the third adjustment rod pushes against the abutting surface of the adjustment seat to drive the adjustment seat to move away from the first surface of the base, wherein the first direction is opposite to the second direction.

4. The adjustment module of claim 2, wherein, The first screw hole is arranged on the base at a first arrangement position, the second screw hole is arranged on the base at a second arrangement position, and a line connecting the first arrangement position and the second arrangement position is a first line, a line connecting the first arrangement position and a third arrangement position where the third screw hole is arranged on the base is a second line, and the first line is different from the second line.

5. The adjustment module according to any one of claims 1 to 3, wherein An outer wall of the first end of the first adjusting rod is shaped to fit an inner wall of the first matching hole of the adjusting seat, and the first adjusting rod exerts a pulling force on the first matching hole in the first direction along the first adjusting axis; An outer wall of the first end of the second adjusting rod is shaped to fit an inner wall of the second matching hole of the adjusting seat, and the first end of the second adjusting rod exerts a pulling force on the second matching hole in the first direction along the second adjusting axis.

6. The adjustment module according to any one of claims 1 to 3, characterized in that, The adjusting seat has a configuration surface and a combination surface opposite to the configuration surface, the configuration surface being used to configure the optical element; the first adjusting rod has a second end opposite to the first end of the first adjusting rod, the second adjusting rod has a second end opposite to the first end of the second adjusting rod, and the third adjusting rod has a second end opposite to the first end of the third adjusting rod; The first end of the first adjusting rod has an arc-shaped outer wall expanding away from the second end of the first adjusting rod, and the first matching hole has an arc-shaped inner wall tapering from the configuration surface to the combination surface; the arc-shaped outer wall of the first adjusting rod and the arc-shaped inner wall of the first matching hole are slidably fitted, so that the first adjusting rod has a first swing angle range relative to the combination surface of the adjusting seat; The first end of the second adjusting rod has an arc-shaped outer wall expanding away from the second end of the second adjusting rod, and the second matching hole has an arc-shaped inner wall tapering from the configuration surface to the combination surface; the arc-shaped outer wall of the second adjusting rod and the arc-shaped inner wall of the second matching hole are slidably fitted, so that the second adjusting rod has a second swing angle range relative to the combination surface of the adjusting seat.

7. The adjustment module according to any one of claims 1 to 3, characterized in that, The first end of the third adjusting rod comprises an outer convex arc surface, and the outer convex arc surface is tangent to the abutting surface of the adjusting seat.

8. The adjustment module according to any one of claims 1 to 4, characterized in that, An extension line of the first adjusting axis passes through a preset center position of the optical element.

9. The adjustment module according to any one of claims 1 to 3, characterized in that, The adjusting seat has a configuration surface and a combination surface opposite to the configuration surface, the combination surface being directed to a first surface of the base, and the optical element being fixed on the configuration surface.

10. The adjusting module according to claim 9, wherein the center axes of the first matching hole and the second matching hole are not perpendicular to the configuration surface; and the abutting surface is not parallel to the configuration surface.

11. The adjustment module according to any one of claims 1 to 3, characterized in that, The adjusting module further comprises: a first compression spring arranged between the base and the adjusting seat and sleeved on the first adjusting rod, the first compression spring exerting a pushing force on the first matching hole of the adjusting seat, so that the first matching hole and the first end of the first adjusting rod are kept fitted; a second compression spring arranged between the base and the adjusting seat and sleeved on the second adjusting rod, the second compression spring exerting a pushing force on the second matching hole of the adjusting seat, so that the second matching hole and the first end of the second adjusting rod are kept fitted; and a third compression spring arranged between the base and the adjusting seat and sleeved on the third adjusting rod, the third compression spring exerting a pushing force on the third matching hole of the adjusting seat, so that the third matching hole and the first end of the third adjusting rod are kept fitted. A third compression spring is disposed between the base and the adjustment seat, the adjustment seat has a positioning slot, the first fitting hole is located between the positioning slot and the abutting surface, one end of the third compression spring is arranged in the positioning slot, the third compression spring applies a pushing force to the positioning slot of the adjustment seat, so that the abutting surface of the adjustment seat keeps in contact with the first end of the third adjustment rod.

12. The adjustment module according to claim 2 or 3, characterized in that The adjustment module is matched with the engagement structure of the external adjustment tool, wherein: The first adjustment rod has a second end opposite to the first end of the first adjustment rod, the second adjustment rod has a second end opposite to the first end of the second adjustment rod, and the third adjustment rod has a second end opposite to the first end of the third adjustment rod; and The second end of the first adjustment rod, the second end of the second adjustment rod, and the second end of the third adjustment rod are respectively exposed on the second surface of the base and respectively have adjustment tool engagement structures.

13. The adjustment module of claim 1, wherein, The optical element is a mirror.

14. A projection apparatus, characterized by comprising: The projection device comprises a light source, an optical element, an adjustment module, a light valve, and a projection lens, wherein: The light source is used to provide an illumination beam; The adjustment module is arranged on the transmission path of the illumination beam to adjust the setting position and the setting angle of the optical element, and the adjustment module comprises a base, an adjustment seat, a first adjustment rod, a second adjustment rod, and a third adjustment rod, wherein: The optical element is fixed on the adjustment seat, and the adjustment seat is located between the base and the optical element; The adjustment seat has a first fitting hole, a second fitting hole, and an abutting surface; The first adjustment rod is movably arranged in the base and is used to move along a first adjustment axis, and a first end of the first adjustment rod is arranged in and matched with the first fitting hole of the adjustment seat; The second adjustment rod is movably arranged in the base and is used to move along a second adjustment axis, and a first end of the second adjustment rod is arranged in and matched with the second fitting hole; and The third adjustment rod is movably arranged in the base and is used to move along a third adjustment axis, and a first end of the third adjustment rod abuts against the abutting surface of the adjustment seat; wherein When at least one of the first adjustment rod, the second adjustment rod, and the third adjustment rod moves along the corresponding adjustment axis thereof, the adjustment seat and the optical element move or swing relative to the base; and The first adjustment axis, the second adjustment axis, and the third adjustment axis respectively have a non-zero included angle with the normal direction of the optical element; The light valve is arranged on the transmission path of the illumination beam to convert the illumination beam into an image beam; and The projection lens is arranged on the transmission path of the image beam to project the image beam out of the projection device.

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