Adjustable optical module and projector

Abstract

The present invention provides an adjustable optical module, comprising an optical element, a carrier, a frame, two first positioning members, a base, and two second positioning members. One carrier or frame includes two first pivots protruding from two sides and extending along a first axis, and the other includes two first pivot holes. The two first pivots are respectively located in the two first pivot holes. The frame or base includes two second pivots protruding from two sides and extending along a second axis, and the other includes two second pivot holes. The two second pivots are respectively located in the two second pivot holes. The present invention provides a projector, comprising a light source module, a light valve, a projection lens, and the above-mentioned adjustable optical module. The adjustable optical module and projector provided by the present invention can effectively avoid the problem of radial movement or shaking of the pivot relative to the pivot hole caused by the pivot hole size being larger than the pivot axis size, thereby providing a better optical effect.

Description

[0001] This application is a divisional application of the invention patent application with the invention name “Adjustable optical module and projector” and application number 202010082203.5 filed on February 7, 2020. Technical Field

[0002] The present invention relates to an optical module and a projector, and in particular to an adjustable optical module and a projector. Background Art

[0003] In existing adjustable optical modules, the optical component carrier and frame are pivotally connected via a pivot and a pivot hole. Because the pivot rotates within the pivot hole, the hole must be larger than the pivot to accommodate it. This creates a gap between the pivot and the hole. During vibration or drop testing, this gap can cause radial displacement of the optical component carrier relative to the frame, potentially leading to optical distortion.

[0004] This "Background" section is intended only to facilitate understanding of the present invention. Therefore, the information disclosed in this section may contain information that is not already known to those skilled in the art. The information disclosed in this section does not imply that the information or the problems to be solved by one or more embodiments of the present invention were known or understood by those skilled in the art prior to the filing of this application. Summary of the Invention

[0005] The invention provides an adjustable optical module, which can prevent the pivot between a supporting part of an optical element and a frame from radially displacing relative to a pivot hole.

[0006] The present invention provides a projector, which includes the above-mentioned adjustable optical module.

[0007] Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

[0008] To achieve one, some, or all of the above-mentioned objectives, or other objectives, according to one embodiment of the present invention, an adjustable optical module includes an optical element, a carrier, a frame, two first positioning members, a base, two second positioning members, a second fixing member, and a second cantilever. The carrier supports the optical element. One of the carrier and the frame includes two first pivots protruding from two sides and extending along a first axis, and the other includes two first pivot holes. The two first pivots are respectively located in the two first pivot holes. The two first positioning members are located on the first axis and press against the two ends of the two first pivots, and the two first positioning members and the two first pivots are all located on the first axis. One of the frame and the base includes two second pivots protruding from two sides and extending along a second axis, and the other includes two second pivot holes. The two second pivots are respectively located in the two second pivot holes. The first axis is perpendicular to the second axis. The two second positioning members are located on the second axis and press against the two ends of the two second pivots. The second fixing member is fixed to a frame or base having two second pivot holes and is aligned with one of the two second pivot holes. One of the two second positioning members is located between the second fixing member and the corresponding second pivot shaft, and the second fixing member presses the corresponding second positioning member to the end of the corresponding second pivot shaft. Furthermore, one end of the second cantilever is fixed to a frame or base having two second pivot holes and is aligned with the other of the two second pivot holes. The other of the two second positioning members is located between the second cantilever and the corresponding second pivot shaft, and the second cantilever presses the corresponding second positioning member to the end of the corresponding second pivot shaft.

[0009] According to another embodiment of the present invention, a projector includes a light source module, a light valve, a projection lens, and an adjustable optical module. The light source module is configured to emit an illumination beam. The light valve is configured to convert the illumination beam into an image beam. The projection lens is configured to project the image beam. The adjustable optical module is disposed in the path of the illumination beam or the image beam. The adjustable optical module includes an optical element, a carrier, a frame, two first positioning members, a base, two second positioning members, a second fixing member, and a second cantilever. The carrier supports the optical element. One of the carrier and the frame includes two first pivots protruding from two sides and extending along a first axis, and the other includes two first pivot holes, wherein the two first pivots are respectively located in the two first pivot holes. The two first positioning members are located on the first axis and press against the two ends of the two first pivots, and the two first positioning members and the two first pivots are all located on the first axis. One of the frame and the base includes two second pivots protruding from two sides and extending along a second axis, and the other includes two second pivot holes, wherein the two second pivots are respectively located in the two second pivot holes. The first axis is perpendicular to the second axis. The two second positioning members are located on the second axis and press against the two ends of the two second pivots. The second fixing member is fixed to a frame or base having two second pivot holes and is aligned with one of the two second pivot holes. One of the two second positioning members is located between the second fixing member and the corresponding second pivot, and the second fixing member presses the corresponding second positioning member against the end of the corresponding second pivot. One end of the second cantilever is fixed to a frame or base having two second pivot holes and is aligned with the other of the two second pivot holes. The other of the two second positioning members is located between the second cantilever and the corresponding second pivot, and the second cantilever presses the corresponding second positioning member against the end of the corresponding second pivot.

[0010] In summary, the adjustable optical module of the present invention utilizes two first positioning members disposed on the first axis and pressing against the ends of the two first pivots to maintain the positions of the two first pivots relative to the two first pivot holes, thereby preventing the two first pivots from moving radially within the two first pivot holes. Similarly, two second positioning members are disposed on the second axis and pressing against the ends of the two second pivots. The two first positioning members and the ends of the two first pivots maintain the positions of the two second pivots relative to the two second pivot holes, thereby preventing the two second pivots from moving radially within the two second pivot holes. In this way, the adjustable optical module of the present invention can effectively avoid the problem of radial movement or shaking of the pivot relative to the pivot hole due to the size of the pivot hole being larger than the size of the pivot. Therefore, the adjustable optical module of the present invention can provide excellent optical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are included to further assist in understanding the present invention and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0012] Figure 1Ais a schematic diagram of a projector according to an embodiment of the present invention;

[0013] Figure 1B is a schematic diagram of a projector according to another embodiment of the present invention;

[0014] Figure 2 is a schematic diagram of an adjustable optical module according to an embodiment of the present invention;

[0015] Figure 3 yes Figure 2 An exploded schematic diagram of an adjustable optical module;

[0016] Figure 4 yes Figure 3 Schematic diagram from another perspective;

[0017] Figure 5 yes Figure 2 A cross-sectional schematic diagram of an adjustable optical module;

[0018] Figure 6 yes Figure 2 A schematic cross-sectional view of the adjustable optical module around the second axis;

[0019] Figure 7 yes Figure 2 A schematic cross-sectional view of the adjustable optical module around a first axis;

[0020] Figure 8A and Figure 8B yes Figure 5 A partial enlarged schematic diagram;

[0021] Figure 9A is a partial cross-sectional schematic diagram of an adjustable optical module according to another embodiment of the present invention;

[0022] Figure 9B yes Figure 9A An axial schematic diagram of the first pivot;

[0023] Figure 9C is an axial schematic diagram of a first pivot of an adjustable optical module according to another embodiment of the present invention;

[0024] Figure 10 FIG. 1 is a partial cross-sectional diagram of an adjustable optical module according to an embodiment of the present invention.

[0025] Description of Figure Numbers:

[0026] θ1, θ2: angle;

[0027] A1: first axis;

[0028] A2: Second axis;

[0029] D1: first inner diameter;

[0030] D2: second inner diameter;

[0031] D3: third inner diameter;

[0032] D4: fourth inner diameter;

[0033] L1: lighting beam;

[0034] L2: image beam;

[0035] R1, R2: outer diameter;

[0036] 10, 10a: Projector;

[0037] 12: Light source module;

[0038] 14: light valve;

[0039] 16: projection lens;

[0040] 100: adjustable optical module;

[0041] 110: optical components;

[0042] 120: bearing member;

[0043] 130: frame;

[0044] 140: base;

[0045] 150, 150a, 150b: first pivot;

[0046] 152, 152a, 152b: first recessed portion;

[0047] 154, 154c, 155: first pivot hole;

[0048] 156: first hole section;

[0049] 158: second hole section;

[0050] 160: Second pivot;

[0051] 162: second recessed portion;

[0052] 164, 165: second pivot hole;

[0053] 166: third hole section;

[0054] 168: fourth hole segment;

[0055] 170, 171: first positioning member;

[0056] 172: first fixing member;

[0057] 174: first plate portion;

[0058] 176: second plate portion;

[0059] 178: First cantilever;

[0060] 180, 181: second positioning member;

[0061] 182: second fixing member;

[0062] 184: third plate;

[0063] 186: fourth plate;

[0064] 188: Second cantilever. DETAILED DESCRIPTION

[0065] The foregoing and other technical aspects, features, and benefits of the present invention will be more clearly understood in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Directional terms such as up, down, left, right, front, and back, used in the following embodiments, are merely references to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and are not intended to limit the present invention.

[0066] Figure 1A is a schematic diagram of a projector according to an embodiment of the present invention. Figure 1A , the projector 10 of this embodiment includes a light source module 12, a light valve 14, a projection lens 16 and an adjustable optical module 100. The light source module 12 is used to emit an illumination light beam L1. In this embodiment, the light source module 12 includes, for example, a laser light source, but in other embodiments, the light source module 12 may also include a light emitting diode or other light source. The light emitted by the light source module 12 is, for example, blue light, but may also be a light beam of other colors, and the present disclosure is not limited here. For example, the light source module 12 may include, for example, a plurality of laser elements (not shown), and these laser elements are, for example, arranged in an array, and the laser elements are, for example, laser diodes (LD). In other embodiments, the light source module 12 may also be multiple. In other embodiments, the light source module 12 may be, for example, a solid-state illumination source including a light emitting diode. The light source module 12 may also include other optical elements, such as a phosphor wheel, etc., which are not described in detail here.

[0067] In this embodiment, the adjustable optical module 100 is disposed on the path of the illumination beam L1 , that is, between the light source module 12 and the light valve 14 to adjust the path of the illumination beam L1 . However, the position of the adjustable optical module 100 is not limited thereto.

[0068] In this embodiment, the light valve 14 is used to convert the illumination beam L1 into the image beam L2. In this embodiment, the light valve 14 is, for example, a reflective light modulator such as a digital micro-mirror device (DMD) or a liquid crystal on silicon (LCoS) panel. In some embodiments, the light valve 14 can be a transmissive light modulator such as a liquid crystal display panel (LCD), an electro-optical modulator (EOM), a magneto-optical modulator (MGAM), or an acousto-optic modulator (AOM). However, this disclosure does not limit the type or type of the light valve 14.

[0069] In this embodiment, the projection lens 16 is used to project the image beam L2. The projection lens 16 is located in the transmission path of the image beam L2 and can project the image beam L2 out of the projector 10 to display an image on a screen, wall, or other projection target. In this embodiment, the projection lens 16, for example, includes a combination of one or more non-planar optical lenses with refractive index, such as various combinations of non-planar lenses such as a biconcave lens, a biconvex lens, a concave-convex lens, a convex-concave lens, a plano-convex lens, and a plano-concave lens. In one embodiment, the projection lens 16 may also include a planar optical lens to project the image beam L2 from the light valve 14 out of the projector 10 by reflection or transmission. The present disclosure does not limit the type and type of the projection lens 16.

[0070] Figure 1B is a schematic diagram of a projector according to another embodiment of the present invention. Figure 1B , Figure 1B The projector 10a and Figure 1A The main difference between the projector 10 and the conventional projector 10 lies in the position of the adjustable optical module 100. In this embodiment, the adjustable optical module 100 is positioned along the path of the image beam L2. In other words, the adjustable optical module 100 is positioned between the light valve 14 and the projection lens 16 to adjust the optical path of the image beam L2.

[0071] In the above embodiment, the adjustable optical module 100 can be designed to prevent the pivot from moving or shaking in the radial direction relative to the pivot hole, thereby providing a good optical effect. The adjustable optical module 100 will be described in detail below.

[0072] Figure 2FIG. 1 is a schematic diagram of an adjustable optical module according to an embodiment of the present invention. Figure 3 yes Figure 2 Exploded diagram of the adjustable optical module. Figure 4 yes Figure 3 See the diagram for another perspective. Figures 2 to 4 The adjustable optical module 100 includes an optical element 110, a carrier 120, a frame 130, two first positioning members 170, 171 ( Figure 3 ), the base 140 and the two second positioning members 180, 181 ( Figure 3 The optical element 110 is, for example, a lens, a dichroic mirror, or a reflective mirror, but the type of the optical element 110 is not limited thereto.

[0073] In this embodiment, the carrier 120 carries the optical element 110. The carrier 120 is located in the frame 130 and is pivotally connected to the frame 130 along the first axis A1. One of the carrier 120 and the frame 130 includes a protrusion from both sides and along the first axis A1 ( Figure 2 ) extends from one of the two first pivots 150, and the other includes two first pivot holes 154, 155. When the carrier 120 and the frame 130 are assembled together, the two first pivots 150 can be respectively disposed in the two first pivot holes 154, 155. Figure 3 In the illustrated embodiment, the carrier 120 includes two first pivots 150 protruding from both sides and extending along the first axis A1, and the frame 130 includes two first pivot holes 154 and 155. However, the present invention is not limited thereto. In other embodiments, the frame 130 may include two first pivots 150 protruding from both sides inward toward the carrier 120 and extending along the first axis A1, and the carrier 120 may include two first pivot holes 154 and 155.

[0074] In this embodiment, Figure 3 It can be seen that in this embodiment, one of the two first pivot holes 154, 155 is a ring-shaped hole with closed edges, and the other is a horseshoe-shaped hole with open edges, such as a U-shaped hole. Figure 3 In the embodiment, the first pivot hole 154 on the left side of the frame 130 is a ring-shaped hole with a closed edge, and the first pivot hole 155 on the right side of the frame 130 is a horseshoe-shaped hole with an open edge, but the present invention is not limited thereto.

[0075] In the above embodiment, the shape design of the first pivot holes 154 and 155 allows the assembler to first assemble the carrier 120 to the frame 130. Figure 3As shown, first pivot shaft 150 on the left side of carrier 120 is inserted into first pivot hole 154 (annular hole) on the left side of frame 130, and then first pivot shaft 150 on the right side of carrier 120 is inserted into first pivot hole 155 (horseshoe-shaped hole) on the right side of frame 130, thereby enhancing assembly convenience. In addition, the shape of first pivot holes 154 and 155 can prevent the pivot shaft from deforming during assembly.

[0076] In addition, in this embodiment, the frame 130 is pivotally connected to the base 140 along the second axis A2. One of the frame 130 and the base 140 includes a protrusion from both sides and along the second axis A2 ( Figure 2 ) extends from one of the two second pivots 160, and the other includes two second pivot holes 164, 165. When the frame 130 and the base 140 are assembled together, the two second pivots 160 can be located in the two second pivot holes 164, 165 respectively. Figure 3 In the illustrated embodiment, the frame 130 includes two second pivot shafts 160 protruding from two sides and extending along the second axis A2, and the base 140 includes two second pivot holes 164 and 165. However, the present invention is not limited to this. In other embodiments, the base 140 may include two second pivot shafts 160 protruding from two sides inward toward the frame 130 and extending along the second axis A2, and the frame 130 may include two second pivot holes 164 and 165. Similarly, one of the two second pivot holes 164 and 165 is a closed-edge annular hole, while the other is a horseshoe-shaped hole with open edges to facilitate assembly and prevent deformation of the second pivot shafts 160 during assembly. In this embodiment, the first axis A1 is perpendicular to the second axis A2.

[0077] It is worth mentioning that in this embodiment, the two first positioning members 170 , 171 are located on the first axis A1 and press against the two ends of the two first pivots 150 . The two second positioning members 180 , 181 are located on the second axis A2 and press against the two ends of the two second pivots 160 .

[0078] Figure 5 yes Figure 2 Schematic cross-sectional view of an adjustable optical module. Figure 6 yes Figure 2 A schematic cross-sectional view of the adjustable optical module around the second axis. Figure 7 yes Figure 2 A schematic cross-sectional view of the adjustable optical module 100 around the first axis. Figures 5 to 7In this embodiment, the adjustable optical module 100 has two first positioning members 170 and 171 disposed on the first axis A1 and pressing against the ends of the two first pivots 150 to maintain the positions of the two first pivots 150 relative to the two first pivot holes 154 and 155, thereby preventing the two first pivots 150 from moving radially within the two first pivot holes 154 and 155. Similarly, two second positioning members 180 and 181 are disposed on the second axis A2 and pressing against the ends of the two second pivots 160 to maintain the positions of the two second pivots 160 relative to the two second pivot holes 164 and 165, thereby preventing the two second pivots 160 from moving radially within the two second pivot holes 164 and 165.

[0079] Thus, the adjustable optical module 100 of the present invention can effectively avoid the problem of radial movement or shaking of the pivot relative to the pivot hole due to the inner diameter of the pivot hole being larger than the outer diameter of the pivot. Therefore, the adjustable optical module 100 of the present invention can provide good optical effects.

[0080] In this embodiment, the first positioning members 170, 171 and / or the second positioning members 180, 181 are spherical, such as steel balls, but the materials and shapes of the first positioning members 170, 171 and the second positioning members 180, 181 are not limited thereto. The spherical shape of the first positioning members 170, 171 can reduce the contact area between the first positioning members 170, 171 and the first pivot 150 (e.g., line contact or point contact, but not limited thereto), thereby reducing friction therebetween and thus preventing the rotation of the first pivot 150 from being affected. The spherical shape of the second positioning members 180, 181 can reduce the contact area between the second positioning members 180, 181 and the second pivot 160 (e.g., line contact or point contact, but not limited thereto), thereby reducing friction therebetween and thus preventing the rotation of the second pivot 160 from being affected.

[0081] In this embodiment, Figure 3 、 Figure 5 and Figure 7 It can be seen that the adjustable optical module 100 of this embodiment further includes a first fixing member 172 and a first cantilever 178. For example, Figure 3In the illustrated embodiment, the first fixing member 172 is fixed to the frame 130 or the carrier 120 having the first pivot hole 155, and the first fixing member 172 is aligned with the first pivot hole 155. The first positioning member 170 is located between the first fixing member 172 and the corresponding first pivot 150, and the first fixing member 172 presses the first positioning member 170 against the end of the corresponding first pivot 150. For example, one end of the first cantilever 178 is fixed to the frame 130 or the carrier 120 having the first pivot hole 154, and the first cantilever 178 is aligned with the first pivot hole 154. The first positioning member 171 is located between the first cantilever 178 and the corresponding first pivot 150, and the first cantilever 178 presses the first positioning member 171 against the end of the corresponding first pivot 150. However, the present invention is not limited to this embodiment. In other embodiments, the first fixing member 172 may be disposed corresponding to the first pivot hole 154, and the first cantilever 178 may be disposed corresponding to the first pivot hole 155.

[0082] Specifically, in Figure 3 In the illustrated embodiment, the first fixing member 172 is disposed on the frame 130 , and one end of the first cantilever 178 is fixed to the frame 130 .

[0083] In the adjustable optical module 100 of this embodiment, both ends of the first fixing member 172 are fixed to the frame 130, and a single end of the first cantilever 178 is fixed to the frame 130, thereby pressing against the first positioning members 170 and 171. Due to the mechanical manufacturing tolerances of various components (e.g., the frame 130), if both first pivots 150 utilize, for example, the first fixing member 172 to press against the first positioning members 170 and 171, the tolerances between the components may result in assembly failure or difficulty. Similarly, if both first pivots 150 utilize, for example, the first cantilever 178 to press against the first positioning members 170 and 171, the support member 120 can achieve a larger adjustment range, causing the frame 130 to be more susceptible to shaking, making high-precision adjustment more difficult.

[0084] In this embodiment, the two first pivots 150 are respectively supported by a first fixing member 172 and a first cantilever 178. The fixed first fixing member 172 and the elastically deformable first cantilever 178 allow the support member 120 to move appropriately about the first axis A1 within the frame 130, while also achieving highly precise adjustment. The first cantilever 178 is, for example, a metal spring.

[0085] Depend on Figure 2 and 7 It can be seen that in this embodiment, the first fixing member 172 includes a first plate portion 174 and a second plate portion 176 that are bent and connected, and the angle θ2 between the first plate portion 174 and the second plate portion 176 (as shown in FIG. Figure 7The angle θ2 between the first plate portion 174 and the second plate portion 176 of the first fixing member 172 is between 70 and 90 degrees. The angle θ2 allows the first plate portion 174 and the second plate portion 176 to provide a clamping force on the first positioning member 170, thereby more firmly pressing the first positioning member 170 against the end of the first pivot 150. Of course, the angle θ2 between the first plate portion 174 and the second plate portion 176 is not limited to this.

[0086] In this embodiment, Figure 3 、 Figure 5 and Figure 6 It can be seen that the adjustable optical module 100 of this embodiment further includes a second fixing member 182 and a second cantilever 188. For example, Figure 3 In the illustrated embodiment, the second fixing member 182 is fixed to the frame 130 or base 140 having the second pivot hole 165, and the second fixing member 182 is aligned with the second pivot hole 165. The second positioning member 180 is located between the second fixing member 182 and the corresponding second pivot 160, and the second fixing member 182 presses the second positioning member 180 against the end of the corresponding second pivot 160. For example, one end of the second cantilever 188 is fixed to the frame 130 or base 140 having the second pivot hole 164, and the second cantilever 188 is aligned with the second pivot hole 164. The second positioning member 181 is located between the second cantilever 188 and the corresponding second pivot 160, and the second cantilever 188 presses the second positioning member 181 against the end of the corresponding second pivot 160. However, the present invention is not limited to this. In other embodiments, the second fixing member 182 may be disposed corresponding to the second pivot hole 164, and the second cantilever 188 may be disposed corresponding to the first pivot hole 165. The second cantilever 188 is, for example, a metal spring.

[0087] Specifically, in Figure 3 In the illustrated embodiment, the second fixing member 182 is disposed on the base 140 , and one end of the second cantilever 188 is fixed to the base 140 .

[0088] In this embodiment, the advantages of the combination of the second fixing member 182 and the second cantilever 188 are similar to the advantages of the combination of the first fixing member 172 and the first cantilever 178 , and are not further elaborated here.

[0089] Depend on Figure 2 and Figure 6 It can be seen that in this embodiment, the second fixing member 182 includes a third plate portion 184 and a fourth plate portion 186 that are bent and connected, and the angle θ1 between the third plate portion 184 and the fourth plate portion 186 (as shown in FIG. Figure 6The angle θ1 between the third plate portion 184 and the fourth plate portion 186 of the second fixing member 182 is between 70 and 90 degrees, and the third plate portion 184 and the fourth plate portion 186 of the second fixing member 182 press against the second positioning member 180. The above-mentioned range of angle θ1 allows the third plate portion 184 and the fourth plate portion 186 to provide a clamping force on the second positioning member 180, so that the second positioning member 180 is more firmly pressed against the end of the second pivot 160. Of course, the angle θ1 between the third plate portion 184 and the fourth plate portion 186 is not limited to this. Figure 8A and Figure 8B yes Figure 5 See the enlarged diagram of the part. Figure 8A , Figure 8A yes Figure 5 A partial enlarged view of the first positioning member 171, and the first cantilever 178 is omitted. In the present embodiment, the first pivot hole 154 is a stepped hole or a funnel-shaped hole in the depth direction, and the first positioning member 171 is located in the first pivot hole 154. For example, in the present embodiment, the first pivot hole 154 is a stepped hole in the depth direction, and includes a first hole section 156 and a second hole section 158, wherein the first hole section 156 and the second hole section 158 have a first inner diameter D1 and a second inner diameter D2, respectively. The first positioning member 171 corresponding to the first pivot hole 154 is located in the first pivot hole 154, and the outer diameter R1 of the first positioning member 171 is smaller than the first inner diameter D1 of the first hole section 156, and larger than the second inner diameter D2 of the second hole section 158. By Figure 8A It can be seen that in this embodiment, the first positioning member 171 is in line contact with the inner wall surface of the first pivot hole 154 between the first hole section 156 and the second hole section 158 .

[0090] In addition, the outer diameter R2 of the first pivot shaft 150 is smaller than the second inner diameter D2 of the second hole section 158 of the first pivot hole 154, and the first pivot shaft 150 is located in the second hole section 158 of the first pivot hole 154. Figure 8A In the illustrated embodiment, the end of the first pivot 150 has a first recess 152, the first positioning member 171 is partially located in the first recess 152, the first recess 152 is a funnel-shaped groove, and the first positioning member 171 is in line contact with the first recess 152 to reduce the friction between the first pivot 150 and the first positioning member 171.

[0091] See also Figure 8B , Figure 8B yes Figure 5A partial enlarged view of the second positioning member 181, and the second cantilever 188 is omitted. In the present embodiment, the second pivot hole 164 is a stepped hole or a funnel-shaped hole in the depth direction, and the second positioning member 181 is located in the second pivot hole 164. For example, in the present embodiment, the second pivot hole 164 is a stepped hole in the depth direction, and includes a third hole segment 166 and a fourth hole segment 168, wherein the third hole segment 166 and the fourth hole segment 168 have a third inner diameter D3 and a fourth inner diameter D4, respectively. The second positioning member 181 corresponding to the second pivot hole 164 is located in the second pivot hole 164, and the outer diameter R1 of the second positioning member 181 is smaller than the third inner diameter D3 of the third hole segment 166, and larger than the fourth inner diameter D4 of the fourth hole segment 168. By Figure 8B It can be seen that in this embodiment, the second positioning member 181 is in line contact with the inner wall surface of the second pivot hole 164 .

[0092] The outer diameter R2 of the second pivot shaft 160 is smaller than the fourth inner diameter D4 of the fourth hole section 168 of the second pivot hole 164, and the second pivot shaft 160 is located in the fourth hole section 168 of the second pivot hole 164. Figure 8B In the illustrated embodiment, the end of the second pivot 160 has a second recess 162, the second positioning members 180 and 181 are partially located in the second recess 162, the second recess 162 is a funnel-shaped groove, and the second positioning member 181 is in line contact with the second recess 162 to reduce the friction between the second pivot 160 and the second positioning member 181.

[0093] Figure 9A FIG. 4 is a partial cross-sectional schematic diagram of an adjustable optical module according to another embodiment of the present invention. Figure 9B yes Figure 9A Schematic diagram of the axial direction of the first pivot 150a. Figure 9A and Figure 9B , Figure 8A and Figure 9A The main difference lies in the shape of the recessed portion. In this embodiment, the first recessed portion 152a of the first pivot 150a is a circular groove. In an embodiment not shown, the second recessed portion of the second pivot may also be a circular groove. Figure 9A In the embodiment shown, the first recessed portion 152a and the first positioning member 171 can be in line contact to reduce the friction between the first pivot 150a and the first positioning member 171, and the second recessed portion of the second pivot can be in line contact with the second positioning member to reduce the friction between the second pivot and the second positioning member.

[0094] Figure 9C FIG is a schematic axial diagram of a first pivot of an adjustable optical module according to another embodiment of the present invention. Figure 9C , Figure 9B and Figure 9C The main difference is that: Figure 9C In the embodiment shown, the first recessed portion 152b of the first pivot 150b is a polygonal groove. In an embodiment not shown, the second recessed portion of the second pivot may also be a polygonal groove. Figure 9C In the illustrated embodiment, the first recessed portion 152b can be in line contact with the first positioning member 171 to reduce friction between the first pivot 150b and the first positioning member 171, and the second recessed portion of the second pivot can be in line contact with the second positioning member to reduce friction between the second pivot and the second positioning member. Of course, the shapes of the first and second recessed portions are not limited to this.

[0095] Figure 10 FIG is a partial cross-sectional diagram of an adjustable optical module according to an embodiment of the present invention. Figure 10 , Figure 10 and Figure 8A The main difference is that: Figure 10 In the illustrated embodiment, the first pivot hole 154c is funnel-shaped in the depth direction. Of course, the second pivot hole can also be funnel-shaped in the depth direction. The first pivot shaft 150 and the inner wall of the first pivot hole 154c can be in line contact to reduce friction between the first pivot shaft 150 and the inner wall of the first pivot hole 154c. However, the shape of the first pivot hole 154c is not limited to this.

[0096] In summary, the adjustable optical module of the present invention utilizes two first positioning members disposed on the first axis and pressing against the ends of the two first pivots to maintain the positions of the two first pivots relative to the two first pivot holes, thereby preventing the two first pivots from moving radially within the two first pivot holes. Similarly, two second positioning members are disposed on the second axis and pressing against the ends of the two second pivots. The two first positioning members and the ends of the two first pivots maintain the positions of the two second pivots relative to the two second pivot holes, thereby preventing the two second pivots from moving radially within the two second pivot holes. In this way, the adjustable optical module of the present invention can effectively avoid the problem of radial movement or shaking of the pivot relative to the pivot hole due to the size of the pivot hole being larger than the size of the pivot. Therefore, the adjustable optical module of the present invention can provide excellent optical effects.

[0097] However, what is described above is only a preferred embodiment of the present invention, and it cannot be used to limit the scope of implementation of the present invention. That is, any simple equivalent changes and modifications made in accordance with the claims and the content of the invention are still within the scope of the patent of the present invention. In addition, any embodiment or claim of the present invention does not need to achieve all the purposes, advantages or features disclosed by the present invention. In addition, the abstract and the title of the invention are only used to assist in the retrieval of patent documents and are not used to limit the scope of rights of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name the names of components or to distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of components.

Claims

1. An adjustable optical module, characterized in that: It includes an optical element, a carrier, a frame, two first positioning members, a base, two second positioning members, a second fixing member and a second cantilever, wherein: The carrier carries the optical element; One of the carrier and the frame includes two first pivots protruding from two sides and extending along a first axis, and the other includes two first pivot holes, wherein the two first pivots are respectively located in the two first pivot holes; The two first positioning members are located on the first axis and press against the two ends of the two first pivots, and the two first positioning members and the two first pivots are both located on the first axis; One of the frame and the base includes two second pivots protruding from two sides and extending along a second axis, and the other includes two second pivot holes, wherein the two second pivots are respectively located in the two second pivot holes, wherein the first axis is perpendicular to the second axis; The two second positioning members are located on the second axis and press against the two ends of the two second pivots; The second fixing member is fixed to the frame or the base having the two second pivot holes and is aligned with one of the two second pivot holes. One of the two second positioning members is located between the second fixing member and the corresponding second pivot shaft, and the second fixing member presses the corresponding second positioning member to the end of the corresponding second pivot shaft. One end of the second cantilever is fixed on the frame or the base having the two second pivot holes and is located opposite the other of the two second pivot holes. The other of the two second positioning members is located between the second cantilever and the corresponding second pivot, and the second cantilever presses the corresponding second positioning member to the end of the corresponding second pivot.

2. The adjustable optical module according to claim 1, wherein: The second fixing member includes a third plate portion and a fourth plate portion that are bent and connected. The angle between the third plate portion and the fourth plate portion is between 70 degrees and 90 degrees. The second positioning member pressed by the second fixing member contacts the third plate portion and the fourth plate portion.

3. The adjustable optical module according to claim 1, wherein: Each of the first positioning members and / or each of the second positioning members is in the form of a sphere.

4. The adjustable optical module according to claim 1, wherein: One of the two first pivot holes is a ring-shaped hole with closed edges, and the other is a horseshoe-shaped hole with open edges, or / and One of the two second pivot holes is a ring-shaped hole with closed edges, and the other is a horseshoe-shaped hole with open edges.

5. The adjustable optical module according to claim 1, wherein: Each of the first pivot holes is a stepped hole or a funnel-shaped hole in the depth direction, and the first positioning member is located in the first pivot hole, or / and Each of the second pivot holes is a stepped hole or a funnel-shaped hole in the depth direction, and the second positioning member is located in the second pivot hole.

6. The adjustable optical module according to claim 1, wherein: Each of the first pivot holes is a stepped hole in the depth direction and includes a first hole section and a second hole section, wherein the first hole section and the second hole section have a first inner diameter and a second inner diameter respectively. The first positioning member corresponding to the first pivot hole is located in the first pivot hole, and the outer diameter of the first positioning member is smaller than the first inner diameter of the first hole segment and larger than the second inner diameter of the second hole segment.

7. The adjustable optical module according to claim 6, wherein: The outer diameter of each first pivot is smaller than the second inner diameter of the second hole section of the corresponding first pivot hole, and each first pivot is located in the second hole section of the corresponding first pivot hole.

8. The adjustable optical module according to claim 1, wherein: Each of the second pivot holes is a stepped hole in the depth direction and includes a third hole segment and a fourth hole segment, wherein the third hole segment and the fourth hole segment have a third inner diameter and a fourth inner diameter respectively. The second positioning member corresponding to the second pivot hole is located in the second pivot hole, and the outer diameter of the second positioning member is smaller than the third inner diameter of the third hole segment and larger than the fourth inner diameter of the fourth hole segment.

9. The adjustable optical module according to claim 8, wherein: The outer diameter of each second pivot shaft is smaller than the fourth inner diameter of the fourth hole section of the corresponding second pivot hole, and each second pivot shaft is located in the fourth hole section of the corresponding second pivot hole.

10. The adjustable optical module according to claim 1, wherein: The end of each first pivot has a first recessed portion, the first positioning member is partially located in the first recessed portion, the first recessed portion is a funnel-shaped groove, a circular groove or a polygonal groove, or / and The end of each second pivot has a second recessed portion, the second positioning member is partially located in the second recessed portion, and the second recessed portion is a funnel-shaped groove, a circular groove or a polygonal groove.

11. A projector, characterized in that: It includes a light source module, a light valve, a projection lens and an adjustable optical module, wherein: The light source module is used to emit an illumination light beam; The light valve is used to convert the illumination light beam into an image light beam; The projection lens is used to project the image light beam; and The adjustable optical module is configured on the path of the illumination beam or the path of the image beam, and includes an optical element, a carrier, a frame, two first positioning members, a base, two second positioning members, a second fixing member, and a second cantilever, wherein: The carrier carries the optical element; One of the carrier and the frame includes two first pivots protruding from two sides and extending along a first axis, and the other includes two first pivot holes, wherein the two first pivots are respectively located in the two first pivot holes; The two first positioning members are located on the first axis and press against the two ends of the two first pivots, and the two first positioning members and the two first pivots are both located on the first axis; One of the frame and the base includes two second pivots protruding from two sides and extending along a second axis, and the other includes two second pivot holes, wherein the two second pivots are respectively located in the two second pivot holes, wherein the first axis is perpendicular to the second axis; The two second positioning members are located on the second axis and press against the two ends of the two second pivots; The second fixing member is fixed to the frame or the base having the two second pivot holes and is aligned with one of the two second pivot holes. One of the two second positioning members is located between the second fixing member and the corresponding second pivot shaft, and the second fixing member presses the corresponding second positioning member to the end of the corresponding second pivot shaft. One end of the second cantilever is fixed on the frame or the base having the two second pivot holes and is located opposite the other of the two second pivot holes. The other of the two second positioning members is located between the second cantilever and the corresponding second pivot, and the second cantilever presses the corresponding second positioning member to the end of the corresponding second pivot.

12. The projector according to claim 11, wherein The second fixing member includes a third plate portion and a fourth plate portion that are bent and connected. The angle between the third plate portion and the fourth plate portion is between 70 degrees and 90 degrees. The second positioning member pressed by the second fixing member contacts the third plate portion and the fourth plate portion.

13. The projector according to claim 11, wherein Each of the first positioning members and / or each of the second positioning members is in the form of a sphere.

14. The projector according to claim 11, wherein One of the two first pivot holes is a ring-shaped hole with closed edges, and the other is a horseshoe-shaped hole with open edges, or / and One of the two second pivot holes is a ring-shaped hole with closed edges, and the other is a horseshoe-shaped hole with open edges.

15. The projector according to claim 11, wherein Each of the first pivot holes is a stepped hole or a funnel-shaped hole in the depth direction, and the first positioning member is located in the first pivot hole, or / and Each of the second pivot holes is a stepped hole or a funnel-shaped hole in the depth direction, and the second positioning member is located in the second pivot hole.

16. The projector according to claim 11, wherein Each of the first pivot holes is a stepped hole in the depth direction and includes a first hole section and a second hole section, wherein the first hole section and the second hole section have a first inner diameter and a second inner diameter respectively. The first positioning member corresponding to the first pivot hole is located in the first pivot hole, and the outer diameter of the first positioning member is smaller than the first inner diameter of the first hole segment and larger than the second inner diameter of the second hole segment.

17. The projector according to claim 16, wherein: The outer diameter of each first pivot is smaller than the second inner diameter of the second hole section of the corresponding first pivot hole, and each first pivot is located in the second hole section of the corresponding first pivot hole.

18. The projector according to claim 11, wherein Each of the second pivot holes is a stepped hole in the depth direction and includes a third hole segment and a fourth hole segment, wherein the third hole segment and the fourth hole segment have a third inner diameter and a fourth inner diameter respectively. The second positioning member corresponding to the second pivot hole is located in the second pivot hole, and the outer diameter of the second positioning member is smaller than the third inner diameter of the third hole segment and larger than the fourth inner diameter of the fourth hole segment.

19. The projector according to claim 18, wherein The outer diameter of each second pivot shaft is smaller than the fourth inner diameter of the fourth hole section of the corresponding second pivot hole, and each second pivot shaft is located in the fourth hole section of the corresponding second pivot hole.

20. The projector according to claim 11, wherein The end of each first pivot has a first recessed portion, the first positioning member is partially located in the first recessed portion, the first recessed portion is a funnel-shaped groove, a circular groove or a polygonal groove, or / and The end of each second pivot has a second recessed portion, the second positioning member is partially located in the second recessed portion, and the second recessed portion is a funnel-shaped groove, a circular groove or a polygonal groove.

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