Positioning mechanism and positioning method

Abstract

The application discloses a positioning mechanism and a positioning method, which are used for positioning an optical element on an optical mechanism. The optical element is carried in a carrying part, and the carrying part has multiple measuring points. The positioning mechanism comprises a reference part, a connecting part, a sliding mechanism, and first, second and third adjusting members. In use, the carrying part carrying the optical element is connected to the connecting part, the reference part is attached to the optical mechanism, a three-dimensional coordinate system is established, the position of the carrying part in a first direction is adjusted by the first adjusting member until a first distance relationship is met, the position of the carrying part in a second direction is adjusted by the second adjusting member until a second distance relationship is met, and the position of the carrying part in a third direction is adjusted by the third adjusting member until a third distance relationship is met. The application can ensure accuracy and improve operation convenience, and can be processed in a production line to improve production capacity.

Description

Technical Field

[0001] This invention relates to a positioning mechanism and a positioning method, and more particularly to a positioning mechanism and a positioning method for accurately and conveniently positioning optical elements within an optical mechanism. Background Technology

[0002] In recent years, large screen has become the hottest keyword in the display field, and the product that leads the way in large screen is none other than projection device. With the decline in the price of projection devices and the enrichment of their functions, the projection device market has gained unprecedented development opportunities and is widely used in homes, offices, schools and entertainment venues.

[0003] When assembling projection devices, optical components need to be precisely installed into the optical mechanism. However, awkward placement often hinders operator maneuverability. Even with the aid of tools such as screws, the accuracy of the optical components remains compromised, failing to meet precision requirements. Therefore, finding a way to accurately and conveniently position optical components within the optical mechanism is one of the research directions for researchers in this field. Summary of the Invention

[0004] The purpose of this invention is to provide a positioning mechanism and positioning method to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention proposes a positioning mechanism for positioning an optical element onto an optical mechanism. The optical element is supported in a support portion, which has multiple measurement points. The positioning mechanism includes a reference portion, a connecting portion, a three-way sliding mechanism, and a first adjustment member, a second adjustment member, and a third adjustment member. The reference portion is used for fitting and connecting with the optical mechanism; the connecting portion is used for detachably connecting with the support portion; the connecting portion is slidably located on the three-way sliding mechanism, which is fixedly connected to the reference portion; the first adjustment member, the second adjustment member, and the third adjustment member are all movably connected to the connecting portion. In use, the support portion carrying the optical element is connected to the connecting portion, and the reference portion is fitted and connected to the optical mechanism. A three-dimensional coordinate system is established with respect to the reference portion in a first direction, a second direction, and a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other. Firstly, by... The first adjustment member adjusts the position of the carrier in the first direction until the plurality of measurement points in the first direction satisfy a first distance relationship with the origin of the three-dimensional coordinate system; then the second adjustment member adjusts the position of the carrier in the second direction until the plurality of measurement points in the second direction satisfy a second distance relationship with the origin of the coordinate system; then the third adjustment member adjusts the position of the carrier in the third direction until the plurality of measurement points in the third direction satisfy a third distance relationship with the origin of the coordinate system, so as to position the optical element at the target position.

[0006] As an optional technical solution, the positioning mechanism also has a first stop structure. After the plurality of measuring points satisfy the first distance relationship with the coordinate origin in the first direction, the first stop structure is fixed to prevent the load-bearing part from displacing in the first direction.

[0007] As an optional technical solution, the plurality of measurement points are located on a circumference with a center. The positioning mechanism also has a second stop structure and a third stop structure. The second direction has opposite first and second sub-directions. The second distance relationship includes the first and second sub-distance relationships. First, the position of the bearing part in the first sub-direction is adjusted by the second adjusting member until the first sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system. The second stop structure is then fixed to prevent displacement of the bearing part in the first sub-direction. Then, the position of the bearing part in the second sub-direction is adjusted by the second adjusting member until the second sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system. The third stop structure is then fixed to prevent displacement of the bearing part in the second sub-direction.

[0008] As an optional technical solution, the positioning mechanism also has a fourth stop structure and a fifth stop structure. The third direction has opposite third and fourth sub-directions, and the third distance relationship includes the third sub-distance relationship and the fourth sub-distance relationship. First, the position of the bearing part in the third sub-direction is adjusted by the third adjusting member until the third sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system. Then, the fourth stop structure is fixed to prevent displacement of the bearing part in the third sub-direction. Next, the position of the bearing part in the fourth sub-direction is adjusted by the third adjusting member until the fourth sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system. Then, the fifth stop structure is fixed to prevent displacement of the bearing part in the fourth sub-direction.

[0009] As an optional technical solution, a first surface is defined on the reference part, and a first line is defined on the reference part. The three-dimensional coordinate system is established based on the first surface and the first line. The optical mechanism has a second surface. When the reference part is attached to the optical mechanism, the first surface is attached to the second surface.

[0010] As an optional technical solution, the optical mechanism is the optical engine of a projector, and the optical element is a condenser lens.

[0011] Furthermore, the present invention also proposes a positioning method for positioning an optical element onto an optical mechanism, the optical element being supported in a support portion having multiple measurement points, the positioning method comprising,

[0012] Step A: A positioning mechanism is provided, which includes a reference part, a connecting part, a three-way sliding mechanism, a first adjusting member, a second adjusting member, and a third adjusting member. The reference part is used to fit and connect with the optical mechanism. The connecting part is used to be detachably connected with the support part and is slidably located on the three-way sliding mechanism. The three-way sliding mechanism is fixedly connected to the reference part. The first adjusting member, the second adjusting member, and the third adjusting member are all movably connected to the connecting part.

[0013] Step B: Connect the carrier portion carrying the optical element to the connecting portion, attach the reference portion to the optical mechanism, and establish a three-dimensional coordinate system with the reference portion in the first direction, the second direction, and the third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other;

[0014] Step C: Adjust the position of the bearing part in the first direction by means of the first adjustment member until the multiple measurement points in the first direction satisfy the first distance relationship with the coordinate origin;

[0015] Step D: Adjust the position of the bearing part in the second direction using the second adjusting member until the plurality of measuring points in the second direction satisfy the second distance relationship with the coordinate origin; and

[0016] Step E involves adjusting the position of the support portion in the third direction using the third adjustment member until the multiple measurement points in the third direction satisfy the third distance relationship with the origin of the coordinate system, thereby positioning the optical element at the target position.

[0017] As an optional technical solution, the positioning mechanism also has a first stop structure. In step C, after the plurality of measuring points satisfy the first distance relationship with the origin of the coordinate system in the first direction, the first stop structure is fixed to prevent the load-bearing part from displacing in the first direction.

[0018] As an optional technical solution, the plurality of measurement points are located on a circle with a center. The positioning mechanism also has a second stop structure and a third stop structure. The second direction includes opposite first sub-directions and second sub-directions. The second distance relationship includes a first sub-distance relationship and a second distance relationship. Step D includes...

[0019] Step D1: Adjust the position of the bearing portion in the first sub-direction using the second adjusting member until the distance between the center of the circle and the origin of the coordinate system satisfies the first sub-distance relationship; fix the second stop structure to prevent displacement of the bearing portion in the first sub-direction; and

[0020] Step D2: Adjust the position of the bearing part in the second sub-direction using the second adjusting member until the second sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system, and fix the third stop structure to prevent the bearing part from displacing in the second sub-direction.

[0021] As an optional technical solution, the positioning mechanism also has a fourth stop structure and a fifth stop structure, the third direction includes opposite fourth and fifth sub-directions, the third distance relationship includes a third sub-distance relationship and a fourth sub-distance relationship, and step E includes,

[0022] Step E1: Adjust the position of the bearing part in the third sub-direction using the third adjusting member until the distance between the center of the circle and the origin of the coordinate system satisfies the third sub-distance relationship; then fix the fourth stop structure to prevent displacement of the bearing part in the third sub-direction; and

[0023] Step E2: Adjust the position of the bearing part in the fourth sub-direction by the third adjustment member until the distance between the center of the circle and the origin of the coordinate system meets the fourth sub-distance relationship, and fix the fifth stop structure to prevent the bearing part from displacing in the fourth sub-direction.

[0024] As an optional technical solution, in step B, a first surface is determined on the reference part, and a first line is determined on the reference part. The three-dimensional coordinate system is established based on the first surface and the first line. The optical mechanism has a second surface. When the reference part is attached to the optical mechanism, the first surface is attached to the second surface.

[0025] The positioning mechanism and method of the present invention connect an optical mechanism to a reference part and support an optical element on a support part. A three-dimensional coordinate system is established on the reference part, and the support part is positioned sequentially in a first direction, a second direction, and a third direction by an adjusting member to achieve precise positioning of the optical element. Furthermore, the positioning mechanism is removed after the optical element is fixedly connected to the optical mechanism. Compared with the prior art, this method ensures accuracy, improves operational convenience, and allows for off-line processing to increase production capacity.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Attached Figure Description

[0027] Figure 1 This is a planar schematic diagram of the positioning mechanism of the present invention;

[0028] Figure 2 This is another planar schematic diagram of the positioning mechanism of the present invention;

[0029] Figure 3 This is a three-dimensional schematic diagram of the positioning mechanism of the present invention;

[0030] Figure 4 This is another perspective view of the positioning mechanism of the present invention;

[0031] Figure 5 This is another perspective view of the positioning mechanism of the present invention;

[0032] Figure 6 This is another perspective view of the positioning mechanism of the present invention;

[0033] Figure 7 This is a flowchart illustrating the positioning method of the present invention. Detailed Implementation

[0034] To provide a further understanding of the purpose, structure, features and functions of the present invention, detailed descriptions are provided below with reference to embodiments.

[0035] Please refer to Figures 1 to 7 , Figure 1 This is a planar schematic diagram of the positioning mechanism of the present invention. Figure 2 This is another planar schematic diagram of the positioning mechanism of the present invention. Figure 3 This is a three-dimensional schematic diagram of the positioning mechanism of the present invention. Figure 4 This is another perspective view of the positioning mechanism of the present invention. Figure 5 This is another perspective view of the positioning mechanism of the present invention. Figure 6 This is another perspective view of the positioning mechanism of the present invention. Figure 7 This is a flowchart illustrating the positioning method of the present invention.

[0036] like Figures 1 to 6 As shown, the present invention proposes a positioning mechanism 100 for positioning an optical element (not shown) within an optical mechanism (not shown). In one embodiment, the optical element is a condenser lens, and the optical mechanism is the optical engine of a projector. The optical engine has an internal space, and the positioning mechanism 100 can be used to position the condenser lens within the internal space of the optical engine to facilitate subsequent assembly and fixation of the condenser lens and the optical engine. In actual operation, the optical element and optical mechanism are not limited to this.

[0037] In this embodiment, the optical element is carried in the support portion 110, which has multiple measurement points 111. The positioning mechanism 100 includes a first adjusting member 120, a second adjusting member 130, a third adjusting member 140, a connecting portion 150, a reference portion 200, and a three-way sliding mechanism 300. The reference portion 200 is used to fit and connect the optical element. The three-way sliding mechanism 300 is fixedly connected to the reference portion 200. The connecting portion 150 is used to detachably connect to the support portion 110 and is slidably located on the three-way sliding mechanism 300, so that the support portion 110 is slidably connected to the three-way sliding mechanism 300 through the connecting portion 150. The first adjusting member 120, the second adjusting member 130, and the third adjusting member 140 are all linked to the connecting portion 150 to drive the connecting portion 150 to move on the three-way sliding mechanism 300, thereby causing the support portion 110 to move in different directions.

[0038] In actual operation, the reference part 200 can have a shape that matches the optical mechanism. In use, the support part 110 carrying the optical element is connected to the connecting part 150, and the reference part 200 is attached to the optical mechanism. A three-dimensional coordinate system is established with the reference part 200 on the first direction X, the second direction Y, and the third direction Z, and the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. First, the position of the carrier 110 in the first direction X is adjusted by the first adjustment member 120 until the multiple measurement points 111 in the first direction X satisfy the first distance relationship with the origin O of the three-dimensional coordinate system. Then, the position of the carrier 110 in the second direction Y is adjusted by the second adjustment member 130 until the multiple measurement points 111 in the second direction Y satisfy the second distance relationship with the origin O. Then, the position of the carrier 110 in the third direction Z is adjusted by the third adjustment member 140 until the multiple measurement points 111 in the third direction Z satisfy the third distance relationship with the origin O, so as to position the optical element at the target position.

[0039] like Figures 1 to 6 As shown, in this embodiment, the reference part 200 has an opening 210, and the support part 110 and part of the connecting part 150 pass through the opening 210. When the reference part 200 is attached to the optical mechanism, the support part 110 can extend into the optical mechanism. At this time, the three-way sliding mechanism 300, the first adjustment member 120, the second adjustment member 130 and the third adjustment member 140 are all located outside the optical mechanism. Thus, the user only needs to perform adjustment operations outside the optical mechanism to complete the position adjustment and positioning of the optical element inside the optical mechanism, which improves the convenience of operation and can be processed by off-line processing to increase production capacity.

[0040] In this embodiment, the support portion 110 has a frustum-shaped groove (or a similar frustum-shaped groove), and multiple measuring points are located on the surface of the frustum-shaped groove. In actual operation, multiple points (e.g., three) can be selected on the inner surface of the groove. The positions of these three points can determine a circumference with a center O'. The optical element can be supported (e.g., clamped and fixed) within the frustum-shaped groove. Furthermore, the optical element has a feature point that coincides with the center O'. This feature point is, for example, the center (or central axis) of the optical element. Thus, by adjusting and positioning the support portion 110 (and the center O'), the optical element supported therein can be adjusted and positioned. In this embodiment, the multiple measuring points are three points located on a circumference of the surface of the frustum-shaped groove. In actual operation, this is not a limitation.

[0041] In this embodiment, the three-way sliding mechanism 300 has slide rails in three directions. When the three-way slide rail mechanism 300 is fixedly connected to the reference part 200, the slide rails in the three directions are parallel to the three axes of the three-dimensional coordinate system established based on the reference part 200. The reference part 200 forms an opening 210 on the side where the first surface S1 (i.e., the plane containing the first direction X and the second direction Y) is located. When the support part 110 carrying the optical element and part of the connecting part 150 pass through the opening 210 on the reference part 200 along the third direction Z and enter the interior of the optical mechanism, since the slide rails in the three directions on the three-way sliding mechanism 300 that allow the connecting part 150 (together with the support part 110) to slide are parallel to the first direction X, the second direction Y and the third direction Z involved in the three-dimensional coordinate system, the accuracy of the subsequent position adjustment of the support part 110 in the three directions can be ensured.

[0042] like Figure 7 As shown, the present invention also proposes a positioning method for positioning an optical element (not shown) within an optical mechanism. The optical element is supported on a support portion 110, which has multiple measurement points 111. The positioning method includes...

[0043] Step A (S110): A positioning mechanism 100 is provided. The positioning mechanism 100 includes a first adjusting member 120, a second adjusting member 130, a third adjusting member 140, a connecting part 150, a reference part 200, and a three-way sliding mechanism 300. The reference part 200 is used to fit and connect with the optical mechanism. The connecting part 150 is detachably connected to the support part 110 and is slidably located on the three-way sliding mechanism 300, so that the support part 110 is located on the three-way sliding mechanism 300 through the connecting part 150. The three-way sliding mechanism 300 is fixedly connected to the reference part 200. The first adjusting member 120, the second adjusting member 130, and the third adjusting member 140 are all linked to the connecting part 150 to drive the support part 110 to move on the three-way sliding mechanism 300.

[0044] Step B (S120): The carrier 110 carrying the optical element is connected to the connecting part 150, the reference part 200 is attached to the optical mechanism, and a three-dimensional coordinate system is established with the reference part 200 on the first direction X, the second direction Y and the third direction Z, with the first direction X, the second direction Y and the third direction Z being perpendicular to each other.

[0045] Step C (S130): The position of the bearing part 110 in the first direction X is adjusted by the first adjustment member 120 until the plurality of measurement points 111 in the first direction X and the coordinate origin O satisfy the first distance relationship.

[0046] Step D (S140): The position of the bearing part 110 in the second direction Y is adjusted by the second adjustment member 130 until the second distance relationship between the plurality of measurement points 111 and the coordinate origin O in the second direction Y is satisfied.

[0047] In step E (S150), the position of the carrier 110 in the third direction Z is adjusted by the third adjustment member 140 until the plurality of measurement points 111 in the third direction Z and the coordinate origin O satisfy the third distance relationship, so as to position the optical element in the target position.

[0048] In one embodiment, a first surface S1 and a first line L1 can be defined on the reference part 200. A three-dimensional coordinate system is established based on the first surface S1 and the first line L1, and the origin O of the coordinate system is determined according to the target position of the optical element. In actual operation, the optical mechanism has a second surface. When the reference part 200 is attached to the optical mechanism, the first surface S1 and the second surface are attached, so that the reference part 200 and the optical mechanism can be accurately connected. The three-dimensional coordinate system established based on the reference part 200 can also be regarded as being established based on the optical mechanism, ensuring the accuracy of subsequent position adjustments.

[0049] In this embodiment, the optical mechanism has multiple connecting posts, and the reference part 200 has multiple matching through holes (not labeled). In use, the multiple connecting posts on the optical mechanism are inserted into the corresponding through holes on the reference part 200, so that the reference part 200 is connected to the optical mechanism, and at this time, the first surface S1 is in contact with the second surface. In actual operation, four points can be selected on the surface of the reference part 200, and a plane can be determined by the positions of these four points, which is the first surface S1; furthermore, the positions of three points can be selected on the reference part 200, and a line can be determined by the positions of these three points, which is the first line L1, and then a three-dimensional coordinate system is established based on the first surface S1 and the first line L1.

[0050] Correspondingly, in the positioning method, in step B, a first surface S1 is determined within the reference portion 200, and a first line L1 is simultaneously determined on the reference portion 200. A three-dimensional coordinate system is established based on the first surface S1 and the first line L1. Further, the origin of the coordinate system is determined based on the target position of the optical element.

[0051] In step C, the position of the bearing portion 110 in the first direction X is adjusted by the first adjusting member 120 until the distance between the plurality of measuring points 111 and the coordinate origin O in the first direction X satisfies the first distance relationship. In this embodiment, the first adjusting member 120 is a knob, and the first direction X is, for example, the front-back direction. In use, the bearing portion 110 is moved back and forth by adjusting the knob in the front-back direction (i.e., the first adjusting member 120), and then each measuring point 111 on the bearing portion 110 is measured until the distance d1 between each measuring point 111 and the coordinate origin O in the first direction X satisfies the first distance relationship. In this embodiment, the first distance relationship can be a first specific distance range. For example, if the distance d1 between each measuring point 111 and the coordinate origin O in the first direction X is within the range of 31.07 ± 0.05 mm, then the first distance relationship is considered to be satisfied.

[0052] like Figure 1 As shown, the positioning mechanism 100 also has a first stop structure 121. After the plurality of measuring points 111 satisfy a first distance relationship with the coordinate origin O in the first direction X, the first stop structure 121 is fixed to prevent displacement of the bearing part 110 in the first direction X. In actual operation, the first stop structure 121 can be a stop screw. After the first distance relationship is satisfied, the stop screw is locked. Correspondingly, in step C of the positioning method, after the plurality of measuring points 111 satisfy the first distance relationship with the coordinate origin O in the first direction X, the first stop structure 121 is fixed to prevent displacement of the connecting part 150 in the first direction X, thereby preventing displacement of the bearing part 110 in the first direction X.

[0053] like Figure 2 , Figure 5 and Figure 6As shown, the positioning mechanism 100 also has a second stop structure 131 and a third stop structure 132. The second direction Y has a first sub-direction +Y and a second sub-direction -Y that are opposite to each other. First, the position of the bearing part 110 in the first sub-direction +Y is adjusted by the second adjustment member 130 until the second distance relationship is satisfied between the center O' and the origin O. The second stop structure 131 is then fixed to prevent the displacement of the connecting part 150 in the first sub-direction +Y, thereby preventing the displacement of the bearing part 110 in the first sub-direction +Y. Then, the position of the bearing part 110 in the second sub-direction -Y is adjusted by the second adjustment member 130 until the second distance relationship is satisfied between the center O' and the origin O. The third stop structure 132 is then fixed to prevent the displacement of the connecting part 150 in the second sub-direction -Y, thereby preventing the displacement of the bearing part 110 in the second sub-direction -Y. Thus, the positioning of the optical element in the second direction Y is completed.

[0054] In this embodiment, the second adjustment member 130 is a knob, and the second direction Y is, for example, the left-right direction. In use, by adjusting the knob in the left-right direction (i.e., the second adjustment member 130), the connecting part 150 drives the supporting part 110 to move left and right. Then, each measuring point 111 on the supporting part 110 is measured until the distance d2 between the center O' of the circumference of each measuring point 111 and the origin O in the second direction Y satisfies the second distance relationship. Further, in this embodiment, the second distance relationship includes a first sub-distance relationship and a second sub-distance relationship.

[0055] Specifically, by adjusting the knobs in the left and right directions (i.e., the second adjusting member 130), the connecting part 150 drives the bearing part 110 to move to the left (i.e., in the first sub-direction + Y). Then, each measuring point 111 on the bearing part 110 is measured until the distance d2 between the center O' of the circumference of each measuring point 111 and the origin O in the second direction Y satisfies the first sub-distance relationship. In this embodiment, the first sub-distance relationship can be a second specific distance range. For example, the bearing part 110 is adjusted to the left (i.e., in the first sub-direction + Y) until the distance d2 between the center O' and the origin O in the second direction Y is within the range of 35.73 ± 0.1 mm. Then, it is considered that the first sub-distance relationship is satisfied. In actual operation, the second stop structure 131 may include a left stop plate. After the first sub-distance relationship is satisfied, the left stop plate is fixed and locked to prevent the connecting part 150 from displacing in the first sub-direction + Y, thereby preventing the bearing part 110 from subsequently displacing in the first sub-direction + Y.

[0056] Then, by adjusting the knobs in the left and right directions (i.e., the second adjustment member 130), the connecting part 150 drives the bearing part 110 to move to the right (i.e., the second sub-direction -Y). Then, each measurement point 111 on the bearing part 110 is measured until the distance d2 between the center O' of the circumference of each measurement point 111 and the origin O in the second direction Y satisfies the second sub-distance relationship. In this embodiment, the second sub-distance relationship can be a third specific distance range. For example, adjusting to the right (i.e., the second sub-direction -Y) until the distance d2 between the center O' and the origin O in the second direction Y is within the range of 36.93 ± 0.1 mm, is considered to satisfy the second sub-distance relationship. In actual operation, the third stop structure 132 may include a right stop plate. After the second sub-distance relationship is satisfied, the right stop plate is fixed and locked to prevent displacement of the connecting part 150 in the second sub-direction -Y, thereby preventing subsequent displacement of the bearing part 110 in the second sub-direction -Y. Thus, the positioning in the second direction Y is completed.

[0057] Correspondingly, in the positioning method, step D includes,

[0058] Step D1: Adjust the position of the bearing portion 110 in the first sub-direction +Y using the second adjusting member 130 until the second distance relationship is satisfied between the center O' and the origin O; fix the second stop structure 131 to prevent displacement of the bearing portion 110 in the first sub-direction +Y; and

[0059] Step D2: Adjust the position of the bearing part 110 in the second sub-direction -Y by means of the second adjustment member 130 until the second distance relationship is satisfied between the center O' and the origin O, and fix the third stop structure 132 to prevent the bearing part 110 from being displaced in the second sub-direction -Y.

[0060] In actual operation, when the optical element is supported in the support part 110, the optical element is symmetrical along the Y-axis and Z-axis. After positioning in the second direction Y by adjusting the position in the first sub-direction +Y and the second sub-direction -Y, a specific small distance range in the second direction Y can be formed. This ensures that the optical element meets the target distance relationship in the second direction Y. When the optical element is a condenser lens, the brightness of the optical element in the second direction Y is maximized. It also avoids the problem of the optical element being twisted and affecting the optical effect due to subsequent operations (such as locking the fixed position).

[0061] In actual operation, the positioning mechanism 100 also has a fourth stop structure (not shown) and a fifth stop structure (not shown). The third direction Z has opposite third sub-direction +Z and fourth sub-direction -Z. First, the position of the bearing part 110 in the third sub-direction +Z is adjusted by the third adjustment member 140 until the center O' of the circumference where each measurement point 111 is located and the origin O of the coordinate system satisfy the third distance relationship. The fourth stop structure is fixed to prevent the connection part 150 from displacing in the third sub-direction +Z, thereby preventing the bearing part 110 from displacing in the third sub-direction +Z. Then, the position of the bearing part 110 in the fourth sub-direction -Z is adjusted by the third adjustment member 140 until the center O' of the circumference where each measurement point 111 is located and the origin O of the coordinate system satisfy the third distance relationship. The fifth stop structure is fixed to prevent the connection part 150 from displacing in the fourth sub-direction -Z, thereby preventing the bearing part 110 from displacing in the fourth sub-direction -Z.

[0062] In this embodiment, the third adjustment member 140 is a knob, and the third direction Z is, for example, the up-down direction. In use, by adjusting the knob in the up-down direction (i.e., the third adjustment member 140), the connecting part 150 drives the supporting part 110 to move up and down. Then, each measuring point 111 on the supporting part 110 is measured until the distance between the center O' of the circle containing each measuring point 111 and the origin O in the third direction Z satisfies the third distance relationship. Further, in this embodiment, the third distance relationship includes a third sub-distance relationship and a fourth sub-distance relationship.

[0063] Specifically, by adjusting the knob in the up-down direction (i.e., the third adjustment member 140), the connecting part 150 drives the bearing part 110 to move downward (i.e., in the third sub-direction +Z). Then, each measuring point 111 on the bearing part 110 is measured until the distance between the center O' of the circumference of each measuring point 111 and the coordinate origin O in the third sub-direction Z satisfies the third sub-distance relationship. In this embodiment, the third sub-distance relationship can be a fourth specific distance range. For example, the bearing part 110 is adjusted downward (i.e., in the third sub-direction +Z) until the distance between the center O' and the coordinate origin O in the third sub-direction Z is within the range of 48.1 + 0.1 / - 0.0 mm, which is considered to satisfy the third sub-distance relationship. In actual operation, the fourth stop structure may include a lower stop plate. After the third sub-distance relationship is satisfied, the lower stop plate is fixed and locked to prevent the bearing part 110 from subsequently displacing in the third sub-direction +Z.

[0064] Then, by adjusting the knob in the up-down direction (i.e., the third adjustment member 140), the connecting part 150 drives the bearing part 110 to move upward (i.e., in the fourth sub-direction -Z). Then, each measurement point 111 on the bearing part 110 is measured until the distance between the center O' of the circumference of each measurement point 111 and the coordinate origin O in the third sub-direction Z satisfies the fourth sub-distance relationship. In this embodiment, the fourth sub-distance relationship can be a fifth specific distance range. For example, adjusting the bearing part 110 upward (i.e., in the fourth sub-direction -Z) until the distance between the center O' and the coordinate origin O in the third sub-direction Z is within the range of 46.9 + 0.0 / - 0.1 mm, is considered to satisfy the fourth sub-distance relationship. In actual operation, the fifth stop structure may include an upper stop plate. After satisfying the fourth sub-distance relationship, the upper stop plate is fixed and locked to prevent subsequent displacement of the bearing part 110 in the fourth sub-direction -Z. Thus, the positioning in the third sub-direction Z is completed.

[0065] Correspondingly, in the positioning method, step E includes,

[0066] Step E1: Adjust the position of the bearing part 110 in the third sub-direction +Z using the third adjusting member 140 until the third distance relationship is satisfied between the center O' and the origin O; fix the fourth stop structure to prevent displacement of the bearing part 110 in the third sub-direction +Z; and

[0067] Step E2: Adjust the position of the bearing part 110 in the fourth sub-direction -Z by the third adjustment member 140 until the third distance relationship is satisfied between the center O' and the origin O, and fix the fifth stop structure to prevent the bearing part 110 from displacing in the fourth sub-direction -Z.

[0068] In actual operation, when the optical element is supported in the support part 110, the optical element is symmetrical along the Y-axis and Z-axis. After the positioning in the third sub-direction Z is completed by adjusting the position in the third sub-direction +Z and the fourth sub-direction -Z, a specific small distance range in the third sub-direction Z is formed. This ensures that the optical element meets the target distance relationship in the third sub-direction Z. When the optical element is a condenser lens, the brightness of the optical element in the third sub-direction Z is maximized. It also avoids the problem of the optical element being twisted and affecting the optical effect due to subsequent operations (such as locking the fixed position).

[0069] In this invention, after positioning in the first direction X, the second direction Y, and the third direction Z, UV adhesive can be applied to a local area between the optical element and the optical mechanism, or between the carrier 110 and the optical mechanism, and then UV light can be irradiated. After the UV adhesive cures, the optical element and the carrier 110 and the optical mechanism can be fixed. At this time, the carrier 110 can be disconnected from the connecting part 150, and then the reference part 200 can be disconnected from the optical mechanism. Thus, the positioning and assembly of the optical element and the optical mechanism 200 are completed.

[0070] During operation, the carrier 110 and the connecting part 150 can be detachably engaged in the first direction X. After the optical element and the carrier 110 are fixedly connected to the optical mechanism, the first stop structure 121 in the first direction X is released, and the position of the connecting part 150 in the first direction X is adjusted by the first adjusting member 120 (at this time, the carrier 110 no longer moves with the connecting part 150 because it is fixedly connected to the optical mechanism) until the carrier 110 and the connecting part 150 are disconnected. Then, each connecting post on the optical mechanism is moved out of each through hole on the reference part 200 to disconnect the reference part 200 from the optical mechanism.

[0071] The positioning mechanism and method of the present invention connect an optical mechanism to a reference part and detachably connect a support part carrying an optical element to a connecting part. A three-dimensional coordinate system is established on the reference part, and the support part is positioned sequentially in a first direction, a second direction, and a third direction by an adjusting member to achieve precise positioning of the optical element carried thereon within the optical mechanism. Furthermore, the positioning mechanism is removed after the optical element is fixedly connected to the optical mechanism. Compared with the prior art, this method ensures accuracy, improves operational convenience, and allows for off-line processing to increase production capacity. In addition, it avoids processing large-sized internal threads on the optical mechanism, reducing the overall cost of parts.

[0072] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A positioning mechanism for positioning an optical element onto an optical mechanism, characterized in that, The optical element is supported in a carrier portion having multiple measurement points, and the positioning mechanism includes, A reference section is used for fitting and connecting with the optical mechanism; A connecting part for detachably connecting to the supporting part; A three-way sliding mechanism, wherein the connecting portion is slidably located on the three-way sliding mechanism, and the three-way sliding mechanism is fixedly connected to the reference portion; and The first adjusting member, the second adjusting member, and the third adjusting member are all connected to the connecting part. In use, the carrier portion carrying the optical element is connected to the connecting portion, and the reference portion is attached to the optical mechanism. A three-dimensional coordinate system is established with the reference portion in a first direction, a second direction, and a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other. First, the position of the carrier portion in the first direction is adjusted by the first adjustment member until the multiple measurement points in the first direction satisfy a first distance relationship with the origin of the three-dimensional coordinate system. Then, the position of the carrier portion in the second direction is adjusted by the second adjustment member until the multiple measurement points in the second direction satisfy a second distance relationship with the origin of the coordinate system. Finally, the position of the carrier portion in the third direction is adjusted by the third adjustment member until the multiple measurement points in the third direction satisfy a third distance relationship with the origin of the coordinate system, thereby positioning the optical element at the target position. The plurality of measurement points are located on a circle with a center that coincides with the center or central axis of the optical element. The second direction has opposite first and second sub-directions, and the second distance relationship includes the first and second sub-distance relationships. The position of the carrier in the first sub-direction is first adjusted by the second adjustment member until the first sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system. The position of the carrier in the second sub-direction is then adjusted by the second adjustment member until the second sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system. The third direction has opposite third and fourth sub-directions, and the third distance relationship includes the third and fourth sub-distance relationships. The position of the carrier in the third sub-direction is first adjusted by the third adjustment member until the third sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system. The position of the carrier in the fourth sub-direction is then adjusted by the third adjustment member until the fourth sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system.

2. The positioning mechanism according to claim 1, characterized in that, The positioning mechanism also has a first stop structure. After the plurality of measuring points satisfy the first distance relationship with the coordinate origin in the first direction, the first stop structure is fixed to prevent the bearing part from displacing in the first direction.

3. The positioning mechanism according to claim 2, characterized in that, The positioning mechanism also has a second stop structure and a third stop structure. After the center of the circle and the origin of the coordinate system satisfy the first sub-distance relationship, the second stop structure is fixed to prevent the load-bearing part from displacing in the first sub-direction. After the center of the circle and the origin of the coordinate system satisfy the second sub-distance relationship, the third stop structure is fixed to prevent the load-bearing part from displacing in the second sub-direction.

4. The positioning mechanism according to claim 3, characterized in that, The positioning mechanism also has a fourth stop structure and a fifth stop structure. After the center of the circle and the origin of the coordinate system satisfy the third sub-distance relationship, the fourth stop structure is fixed to prevent the load-bearing part from displacing in the third sub-direction. After the center of the circle and the origin of the coordinate system satisfy the fourth sub-distance relationship, the fifth stop structure is fixed to prevent the load-bearing part from displacing in the fourth sub-direction.

5. The positioning mechanism according to claim 1, characterized in that, A first surface is defined on the reference portion, and a first line is defined on the reference portion. The three-dimensional coordinate system is established based on the first surface and the first line. The optical mechanism has a second surface. When the reference portion is attached to the optical mechanism, the first surface is attached to the second surface.

6. The positioning mechanism according to claim 1, characterized in that, The optical mechanism is the optical engine of the projector, and the optical element is the condenser lens.

7. A positioning method for positioning an optical element onto an optical mechanism, characterized in that, The optical element is supported in a carrier portion having multiple measurement points, and the positioning method includes... Step A: A positioning mechanism is provided, which includes a reference part, a connecting part, a three-way sliding mechanism, a first adjusting member, a second adjusting member, and a third adjusting member. The reference part is used to fit and connect with the optical mechanism. The connecting part is used to be detachably connected with the support part and is slidably located on the three-way sliding mechanism. The three-way sliding mechanism is fixedly connected to the reference part. The first adjusting member, the second adjusting member, and the third adjusting member are all movably connected to the connecting part. Step B: Connect the carrier portion carrying the optical element to the connecting portion, attach the reference portion to the optical mechanism, and establish a three-dimensional coordinate system with the reference portion in the first direction, the second direction, and the third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other; Step C: Adjust the position of the bearing part in the first direction by means of the first adjustment member until the multiple measurement points in the first direction satisfy the first distance relationship with the origin of the three-dimensional coordinate system; Step D: Adjust the position of the bearing part in the second direction by means of the second adjustment member until the second distance relationship between the plurality of measurement points and the coordinate origin in the second direction is satisfied; Step E: The position of the carrier in the third direction is adjusted by the third adjustment member until the third distance relationship between the plurality of measurement points in the third direction and the origin of the coordinate system is satisfied, so as to position the optical element in the target position. The multiple measurement points are located on a circle with a center that coincides with the center or central axis of the optical element. The second direction has opposite first and second sub-directions, and the second distance relationship includes a first sub-distance relationship and a second sub-distance relationship. Step D includes first adjusting the position of the bearing part in the first sub-direction using the second adjusting member until the first sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system; then adjusting the position of the bearing part in the second sub-direction using the second adjusting member until the second sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system. The third direction has opposite third and fourth sub-directions, and the third distance relationship includes the third sub-distance relationship and the fourth sub-distance relationship; step E includes first adjusting the position of the bearing part in the third sub-direction by the third adjustment member until the third sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate; then adjusting the position of the bearing part in the fourth sub-direction by the third adjustment member until the fourth sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate.

8. The positioning method according to claim 7, characterized in that, The positioning mechanism also has a first stop structure. In step C, after the plurality of measuring points satisfy the first distance relationship with the origin of the coordinate system in the first direction, the first stop structure is fixed to prevent the bearing part from displacing in the first direction.

9. The positioning method according to claim 8, characterized in that, The positioning mechanism also has a second stop structure and a third stop structure. Step D includes... Step D1: After the center of the circle and the origin of the coordinate system satisfy the first sub-distance relationship, fix the second stop structure to prevent the load-bearing part from displacing in the first sub-direction; as well as Step D2: After the center of the circle and the origin of the coordinate system satisfy the second sub-distance relationship, the third stop structure is fixed to prevent the load-bearing part from displacing in the second sub-direction.

10. The positioning method according to claim 9, characterized in that, The positioning mechanism also has a fourth stop structure and a fifth stop structure. Step E includes, Step E1: After the third sub-distance relationship is satisfied between the center of the circle and the origin of the coordinate system, the fourth stop structure is fixed to prevent the load-bearing part from displacing in the third sub-direction. as well as Step E2: After the center of the circle and the origin of the coordinate system satisfy the fourth sub-distance relationship, the fifth stop structure is fixed to prevent the load-bearing part from displacing in the fourth sub-direction.

11. The positioning method according to claim 7, characterized in that, In step B, a first surface is determined on the reference part, and a first line is determined on the reference part. The three-dimensional coordinate system is established based on the first surface and the first line. The optical mechanism has a second surface. When the reference part is attached to the optical mechanism, the first surface is attached to the second surface.

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