CN211375286U - Adjustable optical module and projector - Google Patents

Abstract

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

Description

Adjustable Optical Modules and Projectors

technical field

The utility model relates to an optical module and a projector, in particular, the utility model relates to an adjustable optical module and a projector.

Background technique

In the existing adjustable optical module, the bearing member of the optical element and the frame can achieve the effect of pivot connection through the cooperation of the pivot shaft and the pivot hole. Since the pivot shaft needs to rotate in the pivot hole, the size of the pivot hole needs to be larger than that of the pivot shaft for the pivot shaft to be inserted into. In this case, there is a gap between the pivot shaft and the pivot hole. During the vibration test or drop test, the bearing member of the optical element may be radially displaced relative to the frame due to the gap between the pivot shaft and the pivot hole member, thereby causing Optical variation.

This "Background Art" paragraph is only used to illustrate the understanding of the present invention, so the content disclosed in the "Background Art" paragraph may contain some known technologies that are not known to those skilled in the art. The content disclosed in the "Background Art" paragraph does not represent the content or the problem to be solved by one or more embodiments of the present invention, and has been known or recognized by those skilled in the art before the present invention is applied for. Know.

Utility model content

The utility model provides an adjustable optical module, which can avoid the radial displacement of the pivot shaft between the carrier of the optical element and the frame relative to the pivot hole.

The utility model provides a projector, which comprises the above-mentioned adjustable optical module.

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

In order to achieve one or part or all of the above-mentioned purposes or other purposes, according to an embodiment of the present invention, the adjustable optical module includes an optical element, a carrier, a frame, two first positioning members, a base, and two second positioning members. pieces. The carrier carries the optical element. One of the carrier and the frame includes two first pivots protruding from both sides and extending along the first axis, and the other includes two first pivot holes, and the two first pivots are respectively located in the two first pivot holes Inside. The two first positioning members are located on the first axis and press against two ends of the two first pivots. One of the frame and the base includes two second pivots protruding from both sides and extending along the second axis, the other includes two second pivot holes, and the two second pivots are respectively located in the two second pivot holes Inside. The two second positioning members are located on the second axis and press against two ends of the two second pivots.

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 used for emitting illumination beams. A light valve is used to convert the illumination beam into an image beam. The projection lens is used to project the image beam. The adjustable optical module is arranged on the path of the illumination beam or on the path of the image beam. The adjustable optical module includes an optical element, a carrier, a frame, two first positioning members, a base and two second positioning members. The carrier carries the optical element. One of the carrier and the frame includes two first pivots protruding from both sides and extending along the first axis, and the other includes two first pivot holes, and the two first pivots are respectively located in the two first pivot holes Inside. The two first positioning members are located on the first axis and press against two ends of the two first pivots. One of the frame and the base includes two second pivots protruding from both sides and extending along the second axis, the other includes two second pivot holes, and the two second pivots are respectively located in the two second pivot holes Inside. The two second positioning members are located on the second axis and press against two ends of the two second pivots.

To sum up, the adjustable optical module of the present invention maintains the two first pivots relative to the two first pivots by arranging the two first positioning members on the first axis and pressing against the two ends of the two first pivots. The positions of the pivot holes prevent the two first pivot shafts from moving radially in the two first pivot holes. Similarly, the two second positioning members are arranged on the second axis and press against the two ends of the two second pivot shafts. The position of the second pivot hole prevents the two second pivot shafts from moving along the radial direction in the two second pivot holes. In this way, the adjustable optical module of the present invention can effectively avoid the problem that the pivot shaft moves or shakes in the radial direction relative to the pivot hole because the size of the pivot hole is larger than that of the pivot shaft. Therefore, the adjustable optical module of the present invention can provide good optical effects.

Description of drawings

The accompanying drawings are provided to further aid the understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention.

1A is a schematic diagram of a projector according to an embodiment of the present invention;

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

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

3 is an exploded schematic view of the adjustable optical module of FIG. 2;

Fig. 4 is the schematic diagram of another angle of view of Fig. 3;

5 is a schematic cross-sectional view of the adjustable optical module of FIG. 2;

6 is a schematic cross-sectional view around a second axis of the adjustable optical module of FIG. 2;

7 is a schematic cross-sectional view around the first axis of the adjustable optical module of FIG. 2;

8A and 8B are partially enlarged schematic views of FIG. 5;

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

9B is an axial schematic view of the first pivot of FIG. 9A;

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

10 is a partial cross-sectional schematic diagram of an adjustable optical module according to an embodiment of the present invention.

Description of reference numbers:

θ1, θ2: included angle;

A1: the first axis;

A2: the second axis;

D1: the first inner diameter;

D2: the second inner diameter;

D3: the third inner diameter;

D4: Fourth inner diameter;

L1: Lighting beam;

L2: image beam;

R1, R2: outer diameter;

10, 10a: projector;

12: light source module;

14: light valve;

16: Projection lens;

100: Adjustable optical module;

110: optical components;

120: carrier;

130: frame;

140: base;

150, 150a, 150b: the first pivot;

152, 152a, 152b: a first recess;

154, 154c, 155: the first pivot hole;

156: the first hole segment;

158: the second hole segment;

160: second pivot;

162: the second depression;

164, 165: the second pivot hole;

166: the third hole segment;

168: fourth hole segment;

170, 171: the first positioning member;

172: the first fixing piece;

174: the first board part;

176: second plate part;

178: the first cantilever;

180, 181: the second positioning member;

182: the second fixing part;

184: the third board;

186: fourth board section;

188: Second Cantilever.

Detailed ways

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

FIG. 1A is a schematic diagram of a projector according to an embodiment of the present invention. Referring to FIG. 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 for emitting the 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 light emitting diodes or other light sources. The light emitted by the light source module 12 is, for example, blue light, but can also be light beams of other colors, which are not limited herein by the present disclosure. For example, the light source module 12 may include a plurality of laser elements (not shown), for example, these laser elements are arranged in an array, and the laser elements are, for example, laser diodes (LDs). In other embodiments, there may also be multiple light source modules 12 . In other embodiments, the light source module 12 may be, for example, a solid-state illumination source including light emitting diodes. The light source module 12 may also include other optical elements, such as a phosphor wheel, etc., which will not be described in detail here.

In this embodiment, the adjustable optical module 100 is disposed on the path of the illumination light beam L1. That is, the adjustable optical module 100 is disposed between the light source module 12 and the light valve 14 to adjust the light path of the illumination beam L1, but the position of the adjustable optical module 100 is not limited to this.

In this embodiment, the light valve 14 is used to convert the illumination light beam L1 into the image light 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 panel (LCoS panel). In some embodiments, the light valve 14 can be, for example, a transmissive liquid crystal panel (Liquid Crystal Display Panel), an electro-optical modulator (Electro-Optical Modulator), a magneto-optical modulator (Maganeto-Optic modulator), acousto-optic modulator Transmissive light modulators such as Acousto-OpticModulator (AOM). However, the present disclosure does not limit the type and type of the light valve 14 .

In this embodiment, the projection lens 16 is used to project the image beam L2. The projection lens 16 is located on the transmission path of the image beam L2 and can project the image beam L2 out of the projector 10 to display images on a screen, a wall, or other projection targets. In this embodiment, the projection lens 16 includes, for example, a combination of one or more non-planar optical lenses with dioptric power, such as a bi-concave lens, a bi-convex lens, a meniscus lens, a convex-concave lens, a plano-convex lens, and a plano-concave lens and other non-planar lenses. various combinations. In one embodiment, the projection lens 16 may also include a flat optical lens, which projects the image light beam L2 from the light valve 14 out of the projector 10 in a reflective or penetrating manner. The present disclosure does not limit the type and type of the projection lens 16 .

FIG. 1B is a schematic diagram of a projector according to another embodiment of the present invention. Please refer to FIG. 1B . The main difference between the projector 10 a of FIG. 1B and the projector 10 of FIG. 1A is the position of the adjustable optical module 100 . In this embodiment, the adjustable optical module 100 is disposed on the path of the image beam L2. That is, the adjustable optical module 100 is disposed between the light valve 14 and the projection lens 16 for adjusting the optical path of the image beam L2.

In the above-mentioned embodiment, the adjustable optical module 100 can be designed to avoid movement or shaking of the pivot shaft in the radial direction relative to the pivot hole, so as to provide good optical effects. The tunable optical module 100 will be described in detail below.

FIG. 2 is a schematic diagram of an adjustable optical module according to an embodiment of the present invention. FIG. 3 is an exploded schematic view of the adjustable optical module of FIG. 2 . FIG. 4 is a schematic diagram of another viewing angle of FIG. 3 . Please refer to FIGS. 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 ( FIG. 3 ), a base 140 and two second positioning members 180 , 181 (image 3). The optical element 110 is, for example, a lens, a dichroic mirror or a reflecting mirror, but the type of the optical element 110 is not limited thereto.

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 two first pivot shafts 150 protruding from both sides and extending along the first axis A1 ( FIG. 2 ), and the other includes two first pivot holes 154 and 155 . When the carrier 120 and the frame 130 are assembled together, the two first pivot shafts 150 can be respectively disposed in the two first pivot holes 154 and 155 . In the embodiment shown in FIG. 3 , the carrier 120 includes two first pivot shafts 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 pivot shafts 150 protruding inwardly toward the carrier 120 from both sides and extending along the first axis A1, and the carrier 120 may Including two first pivot holes 154 and 155 .

In this embodiment, as can be seen from FIG. 3 , in this embodiment, one of the two first pivot holes 154 and 155 is an annular hole with closed edges, and the other is a horseshoe-shaped hole with non-closed edges, such as U type hole. More specifically, in FIG. 3 , the first pivot hole 154 on the left side of the frame 130 is an annular 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 unclosed edge. The new type is not limited to this.

In the above-mentioned embodiment, the shape design of the first pivot holes 154 and 155 allows the assembler to install the first pivot on the left side of the carrier 120 shown in FIG. 3 when assembling the carrier 120 to the frame 130 . 150 is inserted into the first pivot hole 154 (annular hole) on the left side of the frame 130, and then the first pivot shaft 150 on the right side of the carrier 120 is inserted into the first pivot hole 155 (horseshoe-shaped hole) on the right side of the frame 130, thereby Increase the ease of assembly. In addition, the shapes of the first pivot holes 154 and 155 can prevent the pivot shaft from being deformed due to assembly.

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 two second pivot shafts 160 protruding from both sides and extending along the second axis A2 ( FIG. 2 ), and the other includes two second pivot holes 164 and 165 . When the frame 130 and the base 140 are assembled together, the two second pivot shafts 160 can be respectively located in the two second pivot holes 164 and 165 . In the embodiment shown in FIG. 3 , the frame 130 includes two second pivot shafts 160 protruding from both 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 thereto. In other embodiments, the base 140 may include two second pivots 160 protruding inwardly toward the frame 130 from both sides 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 ring-shaped hole with closed edges, and the other is a horseshoe-shaped hole with non-closed edges, so as to facilitate assembly and prevent the second pivot shaft 160 from being assembled during the assembly process. deformed. In this embodiment, the first axis A1 is perpendicular to the second axis A2.

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

FIG. 5 is a schematic cross-sectional view of the adjustable optical module of FIG. 2 . FIG. 6 is a schematic cross-sectional view around the second axis of the adjustable optical module of FIG. 2 . FIG. 7 is a schematic cross-sectional view around the first axis of the adjustable optical module 100 of FIG. 2 . Referring to FIGS. 5 to 7 , in this embodiment, the adjustable optical module 100 is configured by arranging the two first positioning members 170 and 171 on the first axis A1 and pressing the two ends of the two first pivot shafts 150 to The positions of the two first pivot shafts 150 relative to the two first pivot holes 154 and 155 are maintained, so that the two first pivot shafts 150 will not be in the two first pivot holes 154 and 155 along the first pivot holes 154 and 155 . radial movement. Similarly, the two second positioning members 180 , 181 are disposed on the second axis A2 and press against the two ends of the two second pivot shafts 160 to maintain the two second pivot shafts 160 relative to the two second pivot holes 164 , 165 . position, so that the two second pivot shafts 160 do not move along the radial direction of the two second pivot holes 164 and 165 in the two second pivot holes 164 and 165 .

In this way, the adjustable optical module 100 of the present invention can effectively avoid the problem that the pivot shaft moves or shakes in the radial direction relative to the pivot hole because the inner diameter of the pivot hole is larger than the outer diameter of the pivot shaft. Therefore, the adjustable optical module 100 of the present invention can provide good optical effects.

In this embodiment, the first positioning members 170, 171 or/and the second positioning members 180, 181 are spherical, such as steel balls, but the materials of the first positioning members 170, 171 and the second positioning members 180, 181 are the same as The shape is not limited to this. The first positioning members 170 and 171 are spherical, which can reduce the contact area between the first positioning members 170 and 171 and the first pivot shaft 150 (for example, a line contact or a point contact, but not limited to this), and the two friction force between the two, so as to avoid affecting the rotation of the first pivot shaft 150 . The second positioning members 180 and 181 are spherical, which can reduce the contact area between the second positioning members 180 and 181 and the second pivot shaft 160 (such as line contact or point contact, but not limited to this), while reducing the two friction force between the two, so as to avoid affecting the rotation of the second pivot shaft 160 .

In this embodiment, as can be seen from FIG. 3 , FIG. 5 and FIG. 7 , the adjustable optical module 100 of this embodiment further includes a first fixing member 172 and a first cantilever 178 . For example, in the embodiment shown in FIG. 3 , the first fixing member 172 is fixed on the frame 130 or the carrier 120 having the first pivot hole 155 , and the first fixing member 172 is opposite to the first pivot hole 155 , The first positioning member 170 is located between the first fixing member 172 and the corresponding first pivot shaft 150 , and the first fixing member 172 presses the first positioning member 170 to the end of the corresponding first pivot shaft 150 . For example, one end of the first cantilever 178 is fixed on the frame 130 or the carrier 120 having the first pivot hole 154 , the first cantilever 178 is positioned on the first pivot hole 154 , and the first positioning member 171 is positioned on the first cantilever 178 and the corresponding first pivot 150 , and the first cantilever 178 presses the first positioning member 171 to the end of the corresponding first pivot 150 . However, the present invention is not limited thereto, and in other embodiments, the first fixing member 172 may also be disposed corresponding to the first pivot hole 154 , and the first cantilever 178 may be disposed corresponding to the first pivot hole 155 .

Specifically, in the embodiment shown in FIG. 3 , the first fixing member 172 is provided on the frame 130 , and one end of the first cantilever 178 is fixed on the frame 130 .

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 pushing against the first positioning members 170 and 171 . Due to the mechanical manufacturing tolerance of each component (eg, the frame 130 ), if the two first pivot shafts 150 are pressed against the two first positioning members 170 and 171 by, for example, the first fixing member 172 , the tolerance between the components may lead to failure of assembly or Difficult to assemble. Similarly, if the two first pivots 150 are both pressed against the two first positioning members 170 and 171 by, for example, the first cantilever 178 , the bearing member 120 can achieve a larger adjustment range, which makes the frame 130 more easily shaken, which is difficult to achieve. High precision adjustment.

In the present embodiment, the two first pivot shafts 150 respectively use the first fixing member 172 and the first cantilever 178 , the fixed first fixing member 172 and the elastically deformable first cantilever 178 so that the bearing member 120 can be mounted on the frame 130 . An appropriate amount of movement is performed in the direction of the first axis A1, and a higher precision adjustment can be realized. The first cantilever 178 is, for example, a metal dome.

2 and 7 , in this embodiment, the first fixing member 172 includes a first plate portion 174 and a second plate portion 176 connected by bending, and a clamp between the first plate portion 174 and the second plate portion 176 The angle θ2 (as shown in FIG. 7 ) is between 70 degrees and 90 degrees, and the first plate portion 174 and the second plate portion 176 of the first fixing member 172 press against the first positioning member 170 . The above-mentioned range of the angle θ2 allows the first plate portion 174 and the second plate portion 176 to provide a clamping force to the first positioning member 170 , so that the first positioning member 170 can be more firmly pressed against the end of the first pivot shaft 150 . Of course, the included angle θ2 between the first plate portion 174 and the second plate portion 176 is not limited to this.

In this embodiment, as can be seen from FIGS. 3 , 5 and 6 , the adjustable optical module 100 of this embodiment further includes a second fixing member 182 and a second cantilever 188 . For example, in the embodiment shown in FIG. 3 , the second fixing member 182 is fixed on the frame 130 or the base 140 having the second pivot hole 165 , and the second fixing member 182 is opposite to the second pivot hole 165 . The second positioning member 180 is located between the second fixing member 182 and the corresponding second pivot shaft 160 , and the second fixing member 182 presses the second positioning member 180 to the end of the corresponding second pivot shaft 160 . For example, one end of the second cantilever 188 is fixed on the frame 130 or the base 140 having the second pivot hole 164 , the second cantilever 188 is paired with the two second pivot holes 164 , and the second positioning member 181 is positioned on the second cantilever 188 and the corresponding second pivot 160 , and the second cantilever 188 presses the second positioning member 181 to the end of the corresponding second pivot 160 . However, the present invention is not limited thereto, and in other embodiments, the second fixing member 182 may also 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 dome.

Specifically, in the embodiment shown in FIG. 3 , the second fixing member 182 is disposed on the base 140 , and one end of the second cantilever 188 is fixed on the base 140 .

In this embodiment, the advantages of the combination of the second fixing member 182 and the second cantilever 188 are similar to the matching of the first fixing member 172 and the first cantilever 178 , and details are not repeated here.

It can be seen from FIG. 2 and FIG. 6 , in this embodiment, the second fixing member 182 includes a third plate portion 184 and a fourth plate portion 186 that are connected by bending, and the space between the third plate portion 184 and the fourth plate portion 186 is The included angle θ1 (as shown in FIG. 6 ) is between 70 degrees and 90 degrees. 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 the angle θ1 allows the third plate portion 184 and the fourth plate portion 186 to provide clamping force to the second positioning member 180 , so that the second positioning member 180 can be more firmly pressed against the end of the second pivot shaft 160 . Of course, the included angle θ1 between the third plate portion 184 and the fourth plate portion 186 is not limited to this. 8A and 8B are partially enlarged schematic views of FIG. 5 . Please refer to FIG. 8A . FIG. 8A is a partial enlarged view of the first positioning member 171 in FIG. 5 , and the first cantilever 178 is omitted. In this 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 this 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 They 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 hole section 158 . The second inner diameter D2. As can be seen from FIG. 8A , in this embodiment, the first positioning member 171 and the inner wall surface of the first pivot hole 154 between the first hole segment 156 and the second hole segment 158 are in line contact.

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 . In the embodiment shown in FIG. 8A , the end of the first pivot shaft 150 has a first concave portion 152 , the first positioning member 171 is partially located in the first concave portion 152 , and the first concave portion 152 is a funnel-shaped groove, And the first positioning member 171 is in line contact with the first concave portion 152 , so as to reduce the frictional force between the first pivot shaft 150 and the first positioning member 171 .

Please refer to FIG. 8B . FIG. 8B is a partial enlarged view of the second positioning member 181 in FIG. 5 , and the second cantilever 188 is omitted. In this 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 this embodiment, the second pivot hole 164 is a stepped hole in the depth direction, and includes a third hole section 166 and a fourth hole section 168 , wherein the third hole section 166 and the fourth hole section 168 are respectively It has a third inner diameter D3 and a fourth inner diameter D4. 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 hole segment 168 . Fourth inner diameter D4. As can be seen from FIG. 8B , in this embodiment, the second positioning member 181 is in line contact with the inner wall surface of the second pivot hole 164 .

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 . In the embodiment shown in FIG. 8B , the end of the second pivot shaft 160 has a second concave portion 162 , the second positioning members 180 and 181 are partially located in the second concave portion 162 , and the second concave portion 162 is a funnel-shaped concave A groove is formed, and the second positioning member 181 is in line contact with the second concave portion 162 , so as to reduce the frictional force between the second pivot shaft 160 and the second positioning member 181 .

9A is a partial cross-sectional schematic diagram of an adjustable optical module according to another embodiment of the present invention. FIG. 9B is an axial schematic view of the first pivot shaft 150a of FIG. 9A . Please refer to FIG. 9A and FIG. 9B . The main difference between FIG. 8A and FIG. 9A is the shape of the concave portion. In this embodiment, the first concave portion 152a of the first pivot shaft 150a is a circular groove. In the not-shown embodiment, the second concave portion of the second pivot can also be a circular groove. In the embodiment shown in FIG. 9A , the first concave portion 152a and the first positioning member 171 can be in line contact, so as to reduce the frictional force between the first pivot shaft 150a and the first positioning member 171, and the second pivot shaft The second concave portion of the second positioning member can present a line contact, so as to reduce the friction force between the second pivot and the second positioning member.

9C is an axial schematic diagram of the first pivot of the adjustable optical module according to another embodiment of the present invention. Please refer to FIG. 9C . The main difference between FIG. 9B and FIG. 9C is that in the embodiment shown in FIG. 9C , the first concave portion 152b of the first pivot 150b is a polygonal groove. In the not-shown embodiment, the second concave portion of the second pivot can also be a polygonal groove. In the embodiment shown in FIG. 9C , the first concave portion 152b and the first positioning member 171 may be in line contact to reduce the frictional force between the first pivot shaft 150b and the first positioning member 171, and the second pivot shaft The second concave portion of the second positioning member can present a line contact, so as to reduce the friction force between the second pivot and the second positioning member. Of course, the shapes of the first recessed portion and the second recessed portion are not limited to this.

10 is a partial cross-sectional schematic diagram of an adjustable optical module according to an embodiment of the present invention. Please refer to FIG. 10 . The main difference between FIG. 10 and FIG. 8A is that in the embodiment shown in FIG. 10 , the first pivot hole 154c is a funnel-shaped hole in the depth direction. Of course, the second pivot hole may also be a funnel-shaped hole in the depth direction. The first pivot shaft 150 and the inner wall surface of the first pivot hole 154c may present a line contact to reduce the frictional force between the first pivot shaft 150 and the inner wall surface of the first pivot hole 154c. The shape is not limited to this.

To sum up, the adjustable optical module of the present invention maintains the two first pivots relative to the two first pivots by arranging the two first positioning members on the first axis and pressing against the two ends of the two first pivots. The positions of the pivot holes prevent the two first pivot shafts from moving radially in the two first pivot holes. Similarly, the two second positioning members are arranged on the second axis and press against the two ends of the two second pivot shafts. The position of the second pivot hole prevents the two second pivot shafts from moving along the radial direction in the two second pivot holes. In this way, the adjustable optical module of the present invention can effectively avoid the problem that the pivot shaft moves or shakes in the radial direction relative to the pivot hole because the size of the pivot hole is larger than that of the pivot shaft. Therefore, the adjustable optical module of the present invention can provide good optical effects.

Only the above are only preferred embodiments of the present utility model, and the scope of the present utility model implementation cannot be limited by this, that is, any simple equivalent changes made according to the present utility model claims and the utility model content All modifications and modifications are still within the scope of the present invention patent. In addition, it is not necessary for any embodiment or claim of the present invention to achieve all of the objects or advantages or features disclosed in the present invention. In addition, the abstract and the name of the utility model are only used to assist the retrieval of patent documents, and are not used to limit the scope of rights of the present utility model. In addition, terms such as "first" and "second" mentioned in this specification or the claims are only used to name the names of elements or to distinguish different embodiments or ranges, rather than to limit the upper or lower limit of the number of components .

Claims (26)

1. An adjustable optical module, comprising an optical element, a carrier, a frame, two first positioning members, a base, and two second positioning members, wherein:

the bearing part bears the optical element;

one of the bearing piece and the frame comprises two first pivot shafts which protrude from two sides and extend along a first axis, and the other one of the bearing piece and the frame comprises two first pivot holes, wherein the two first pivot shafts are respectively positioned in the two first pivot holes;

the two first positioning pieces are positioned on the first axis and are pressed against the two tail ends of the two first pivots;

one of the frame and the base comprises two second pivot shafts which protrude from two sides and extend along a second axis, and the other one of the frame and the base comprises two second pivot holes, wherein the two second pivot shafts are respectively positioned in the two second pivot holes; and

the two second positioning parts are positioned on the second axis and are pressed against the two tail ends of the two second pivots.

2. The tunable optical module of claim 1, further comprising:

the first fixing piece is fixed on the frame or the bearing piece with the two first pivot holes and is aligned to one of the two first pivot holes, one of the two first positioning pieces is positioned between the first fixing piece and the corresponding first pivot, and the first fixing piece presses the corresponding first positioning piece to the tail end of the corresponding first pivot; and

and one end of the first cantilever is fixed on the frame or the bearing piece with the two first pivot holes and corresponds to the other one of the two first pivot holes, the other one of the two first positioning pieces is positioned between the first cantilever and the first pivot oppositely positioned, and the first cantilever presses the corresponding first positioning piece to the tail end of the corresponding first pivot.

3. The adjustable optical module according to claim 2, wherein the first fixing member comprises a first plate portion and a second plate portion connected by bending, an included angle between the first plate portion and the second plate portion ranges from 70 degrees to 90 degrees, and the first positioning member pressed by the first fixing member contacts the first plate portion and the second plate portion.

4. The tunable optical module of claim 1, further comprising:

the second fixing piece is fixed on the frame with the two second pivot holes and the base and is aligned to one of the two second pivot holes, one of the two second positioning pieces is positioned between the second fixing piece and the corresponding second pivot, and the second fixing piece presses the corresponding second positioning piece to the tail end of the corresponding second pivot; and

and one end of the second cantilever is fixed on the frame with the two second pivot holes and the base and is aligned with the other one of the two second pivot holes, the other one of the two second positioning pieces is positioned between the second cantilever and the corresponding second pivot, and the second cantilever presses the corresponding second positioning piece to the tail end of the corresponding second pivot.

5. The adjustable optical module according to claim 4, wherein the second fixing member comprises a third plate portion and a fourth plate portion connected by bending, an included angle between the third plate portion and the fourth plate portion ranges from 70 degrees to 90 degrees, and the second positioning member pressed by the second fixing member contacts the third plate portion and the fourth plate portion.

6. The adjustable optical module according to claim 1, wherein each of the first positioning elements and/or each of the second positioning elements is a sphere.

7. The adjustable optical module according to claim 1,

one of the two first pivot holes is an annular hole with a sealed edge, and the other one is a horseshoe hole with a non-sealed edge, or/and

one of the two second pivot holes is an annular hole with a sealed edge, and the other one is a horseshoe-shaped hole with a non-sealed edge.

8. The adjustable optical module according to claim 1,

each first pivot hole is a step-shaped hole or a funnel-shaped hole in the depth direction, and the first positioning piece is positioned in the first pivot hole or/and

each second pivot hole is a step-shaped hole or a funnel-shaped hole in the depth direction, and the second positioning piece is located in the second pivot hole.

9. The adjustable optical module according to claim 1,

each first pivot hole is a step-shaped hole in the depth direction and comprises a first hole section and a second hole section, wherein the first hole section and the second hole section are respectively provided with a first inner diameter and a second inner diameter,

the first positioning piece corresponding to the first pivot hole is positioned in the first pivot hole, and the outer diameter of the first positioning piece is smaller than the first inner diameter of the first hole section and larger than the second inner diameter of the second hole section.

10. The adjustable optical module according to claim 9,

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.

11. The adjustable optical module according to claim 1,

each second pivot hole is a step-shaped hole in the depth direction and comprises a third hole section and a fourth hole section, wherein the third hole section and the fourth hole section are respectively provided with a third inner diameter and a fourth inner diameter,

the second positioning piece corresponding to the second pivot hole is positioned in the second pivot hole, and the outer diameter of the second positioning piece is smaller than the third inner diameter of the third hole section and larger than the fourth inner diameter of the fourth hole section.

12. The adjustable optical module according to claim 11,

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.

13. The adjustable optical module according to claim 1,

each first pivot has a first recess at the end, the first positioning member is partially located in the first recess, the first recess is a funnel-shaped recess, a circular recess or a polygonal recess, or/and

each the end of the second pivot has a second depressed part, the second positioning element is partially located in the second depressed part, and the second depressed part is a funnel-shaped groove, a circular groove or a polygonal groove.

14. A projector is characterized by comprising a light source module, a light valve, a projection lens and an adjustable optical module, wherein:

the light source module is used for emitting an illumination light beam;

the light valve is used for converting the illumination light beam into an image light beam;

the projection lens is used for projecting the image light beam; and

the adjustable optical module is disposed on the path of the illumination beam or on the path of the image beam, and the adjustable optical module includes an optical element, a bearing member, a frame, two first positioning members, a base and two second positioning members, wherein:

the bearing part bears the optical element;

one of the bearing piece and the frame comprises two first pivot shafts which protrude from two sides and extend along a first axis, and the other one of the bearing piece and the frame comprises two first pivot holes, wherein the two first pivot shafts are respectively positioned in the two first pivot holes;

the two first positioning pieces are positioned on the first axis and are pressed against the two tail ends of the two first pivots;

one of the frame and the base comprises two second pivot shafts which protrude from two sides and extend along a second axis, and the other one of the frame and the base comprises two second pivot holes, wherein the two second pivot shafts are respectively positioned in the two second pivot holes; and

the two second positioning parts are positioned on the second axis and are pressed against the two tail ends of the two second pivots.

15. The projector of claim 14 wherein the adjustable optical module further comprises:

the first fixing piece is fixed on the frame or the bearing piece with the two first pivot holes and is aligned to one of the two first pivot holes, one of the two first positioning pieces is positioned between the first fixing piece and the corresponding first pivot, and the first fixing piece presses the corresponding first positioning piece to the tail end of the corresponding first pivot; and

and one end of the first cantilever is fixed on the frame or the bearing piece with the two first pivot holes and is aligned with the other one of the two first pivot holes, the other one of the two first positioning pieces is positioned between the first cantilever and the corresponding first pivot, and the first cantilever presses the corresponding first positioning piece to the tail end of the corresponding first pivot.

16. The projector as claimed in claim 15, wherein the first fixing member includes a first plate portion and a second plate portion connected by bending, an included angle between the first plate portion and the second plate portion is between 70 degrees and 90 degrees, and the first positioning member pressed by the first fixing member contacts the first plate portion and the second plate portion.

17. The projector of claim 14 wherein the adjustable optical module further comprises:

the second fixing piece is fixed on the frame with the two second pivot holes and the base and is aligned to one of the two second pivot holes, one of the two second positioning pieces is positioned between the second fixing piece and the corresponding second pivot, and the second fixing piece presses the corresponding second positioning piece to the tail end of the corresponding second pivot; and

and one end of the second cantilever is fixed on the frame with the two second pivot holes and the base and is aligned with the other one of the two second pivot holes, the other one of the two second positioning pieces is positioned between the second cantilever and the corresponding second pivot, and the second cantilever presses the corresponding second positioning piece to the tail end of the corresponding second pivot.

18. The projector as claimed in claim 17, wherein the second fixing member includes a third plate portion and a fourth plate portion connected by bending, an included angle between the third plate portion and the fourth plate portion ranges from 70 degrees to 90 degrees, and the second positioning member pressed by the second fixing member contacts the third plate portion and the fourth plate portion.

19. The projector as claimed in claim 14, wherein each of the first positioning members and/or each of the second positioning members is a sphere.

20. The projector as defined in claim 14,

one of the two first pivot holes is an annular hole with a sealed edge, and the other one is a horseshoe hole with a non-sealed edge, or/and

one of the two second pivot holes is an annular hole with a sealed edge, and the other one is a horseshoe-shaped hole with a non-sealed edge.

21. The projector as defined in claim 14,

each first pivot hole is a step-shaped hole or a funnel-shaped hole in the depth direction, and the first positioning piece is positioned in the first pivot hole or/and

each second pivot hole is a step-shaped hole or a funnel-shaped hole in the depth direction, and the second positioning piece is located in the second pivot hole.

22. The projector as defined in claim 14,

each first pivot hole is a step-shaped hole in the depth direction and comprises a first hole section and a second hole section, wherein the first hole section and the second hole section are respectively provided with a first inner diameter and a second inner diameter,

the first positioning piece corresponding to the first pivot hole is positioned in the first pivot hole, and the outer diameter of the first positioning piece is smaller than the first inner diameter of the first hole section and larger than the second inner diameter of the second hole section.

23. The projector as claimed in claim 22, wherein an outer diameter of each of the first pivot shafts is smaller than the second inner diameter of the second hole segment of the corresponding first pivot hole, and each of the first pivot shafts is located in the second hole segment of the corresponding first pivot hole.

24. The projector as defined in claim 14,

each second pivot hole is a step-shaped hole in the depth direction and comprises a third hole section and a fourth hole section, wherein the third hole section and the fourth hole section are respectively provided with a third inner diameter and a fourth inner diameter,

the second positioning piece corresponding to the second pivot hole is positioned in the second pivot hole, and the outer diameter of the second positioning piece is smaller than the third inner diameter of the third hole section and larger than the fourth inner diameter of the fourth hole section.

25. The projector as defined in claim 24,

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.

26. The projector as defined in claim 14,

each first pivot has a first recess at the end, the first positioning member is partially located in the first recess, the first recess is a funnel-shaped recess, a circular recess or a polygonal recess, or/and

each the end of the second pivot has a second depressed part, the second positioning element is partially located in the second depressed part, and the second depressed part is a funnel-shaped groove, a circular groove or a polygonal groove.

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