Optical Component Mounts

Abstract

The present invention relates to the field of optical technology, and discloses an optical element adjustment frame to independently adjust and lock each dimension, and improve the convenience and stability of operation while avoiding optical crosstalk. The adjustment frame of the present invention includes: a support frame, provided with a translation ring, a first driving mechanism for driving the translation ring to translate toward the X-axis, and a second driving mechanism for driving the translation ring to translate toward the Y-axis; the translation ring is connected to the connecting ring with an internal thread; the connecting ring couples the optical element mounting ring, the front knob, the limit ring, the locking ring, the translation ring and the rear knob, a first top screw is provided between the limit ring and the front knob, and a second top screw is provided between the locking ring and the rear knob; when the second top screw is locked and the first top screw is loosened, the optical element mounting ring is driven to translate along the Z-axis direction by rotating the front knob; when the first top screw is locked and the second top screw is loosened, the optical element mounting ring is driven to rotate around the Z-axis by rotating the rear knob.

Description

Technical Field

[0001] The invention relates to the field of optical technology, and in particular to an optical element adjustment frame. Background Art

[0002] Optical adjustment frames are widely used in the field of optical precision machinery, and related technologies include but are not limited to the prior art disclosed in patents such as 201710000695.7, 201610333357.0, 201821640358.0, 201210300153.9, and 200820206058.1. Optical elements are installed in the adjustment frame to fine-tune the azimuth of the optical axis, the focus of the light spot, etc., thereby realizing the functions of the optical system.

[0003] The more degrees of freedom the adjustment frame has, the simpler the size of the optical system is, and the more convenient it is to adjust. The common multi-dimensional adjustment frames on the market can achieve five degrees of freedom adjustment without optical crosstalk, but lack the degree of freedom adjustment around the Z axis, and are not compatible with the use of polarizers and wave plates. Some six-axis optical adjustment frames can achieve six degrees of freedom adjustment, but their Z-axis translation cannot be adjusted independently, and the three regulators at the back end need to be adjusted to move the same distance at the same time, but it is difficult to ensure that the three regulators move the same distance along the Z axis; at the same time, adjusting the rotation of the XY axis also requires adjusting the two regulators at the back end, which is bound to affect the Z-axis translation and cause crosstalk in the optical path, so multiple adjustments are required to meet system requirements. Summary of the invention

[0004] The present invention aims to disclose an optical element adjustment frame, which can independently adjust and lock each dimension, and improve the convenience and stability of operation while avoiding optical crosstalk.

[0005] To achieve the above object, the present invention discloses an optical element adjustment stand, comprising:

[0006] A support frame is provided with a translation ring, a first driving mechanism for driving the translation ring to translate along the X-axis, and a second driving mechanism for driving the translation ring to translate along the Y-axis;

[0007] The translation ring is connected to the connecting ring by an internal thread;

[0008] An optical element mounting ring, a front knob, a limiting ring and a clamping ring are provided on the left side of the connecting ring, a first top screw is provided between the limiting ring and the front knob; the clamping ring is used to clamp the optical element in the optical element mounting ring, the front knob is connected to the front end of the optical element mounting ring with an internal thread, the limiting ring is provided in a cavity between the front knob and the middle and rear ends of the optical element mounting ring, a groove parallel to the Z axis is also provided on the middle and rear ends of the optical element mounting ring, one end of a limiting pin is accommodated in the groove, and the other end of the limiting pin extends into the limiting ring; the connecting ring is threadedly connected to the limiting ring, and there is a matching gap between the front knob, the limiting ring and the connecting ring;

[0009] A locking ring and a rear knob are provided on the right side of the connecting ring; the translation ring is threadedly connected to the locking ring, the connecting ring is threadedly connected to the rear knob, there is a matching gap between the rear knob and the locking ring, and a second top screw is provided between the locking ring and the rear knob;

[0010] Wherein, the first top screw and the second top screw are also used for:

[0011] When the second top screw is locked and the first top screw is loosened, the front knob is rotated to drive the optical element mounting ring to translate along the Z-axis direction; and

[0012] When the first top screw is locked and the second top screw is loosened, the optical element mounting is driven to rotate around the Z axis by rotating the rear knob.

[0013] Preferably, the specific structure of the second driving mechanism is:

[0014] The support frame is provided with a Y-axis hand-tightening screw, and the Y-axis hand-tightening screw cooperates with the support frame thread to push the Y-axis limit block. The boss groove of the Y-axis limit block cooperates with the translation ring and is symmetrically distributed one up and one down. A pagoda spring for providing reaction force is provided between the lower Y-axis limit block and the support frame.

[0015] Preferably, the specific structure of the first driving mechanism is:

[0016] An X-axis hand screw is provided on the support frame, and the X-axis hand screw cooperates with the support frame thread to push the X-axis limit block. The boss groove of the X-axis limit block cooperates with the translation ring and is symmetrically distributed one on each side. A pagoda spring for providing a reaction force is provided between the X-axis limit block on the side opposite to the X-axis hand screw and the support frame.

[0017] Preferably, the present invention also includes: a rotating frame connected to the support frame by a compression spring; the rotating frame is connected to the support frame by a right pitch bracket, a left pitch bracket, a cylindrical pin and a fixing screw, and the cylindrical pin is distributed on the left and right sides; and the rotating frame is also provided with a threaded hand-tightened screw to push the support frame to rotate around the axis of the cylindrical pin.

[0018] Preferably, the present invention further includes: a base; the rotating frame is connected to the base through a rotating pin to realize the rotation of the adjustment frame around the Y-axis. Specifically, the base is provided with two bosses designed in a seesaw, the fulcrum of the seesaw is the rotating pin, and the rotating frame is provided with two corresponding grooves. The rotating frame is provided with a hand screw to push a boss on the base to rotate around the axis of the rotating pin, and the other boss is connected to a compression spring to provide a reaction force. Furthermore, the present invention also includes: a limit screw for limiting the rotation angle around the Y-axis; and a locking block and a locking screw for locking the rotation state of the adjustment frame around the Y-axis. Similarly, similar limit and fixing components can also be introduced in the adjustment process of other dimensions.

[0019] The present invention has the following beneficial effects:

[0020] The optical element mounting ring, the front knob, the limit ring, the locking ring, the translation ring and the rear knob are coupled with a connecting ring, and the structure is compact and practical. Through the cooperation of the first top screw and the second top screw, the rotation and translation of the optical element around the Z axis can be adjusted independently and without interfering with each other. At the same time, it is also independent of the XY axis translation and does not interfere with each other, which improves the convenience and stability of operation while avoiding optical crosstalk.

[0021] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is a structural front view of the optical element adjustment frame disclosed in an embodiment of the present invention.

[0024] Figure 2 It is a left side view of the structure of the optical element adjustment frame disclosed in the embodiment of the present invention.

[0025] Figure 3 It is a right side view of the structure of the optical element adjustment frame disclosed in the embodiment of the present invention.

[0026] Figure 4 It is a structural elevation view of an optical element adjustment stand disclosed in an embodiment of the present invention.

[0027] Figure 5 yes Figure 1 Middle AA section view.

[0028] Figure 6 yes Figure 1 Middle BB section view.

[0029] Figure 7 yes Figure 1 Middle CC section view. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0031] Embodiment 1

[0032] This embodiment discloses an optical element adjustment stand.

[0033] like Figures 1 to 7 As shown, the adjustment frame of this embodiment includes: a support frame 1, a rotating frame 2, a hand screw 3, a base 4, a compression spring 5, a right pitch bracket 6, a cylindrical pin 7, a locking screw 8, a fixing screw 9, a locking block 10, a locking screw 11, a left pitch bracket 12, a rear cover 13, an optical element mounting ring 14, a retaining ring 15, a cover 16, a front knob 17, a limit ring 18, a first top screw 19, a connecting ring 20, a limit block 21, a translation ring 22, a second top screw 23, a rear knob 24, a locking ring 25, a pagoda spring 26, a rotating pin 27, a compression spring 28, a limit screw 29, and a limit pin 30.

[0034] In this embodiment, the optical element is installed in the optical element installation ring 14 and is fixed by the clamping ring 15. The installation ring has a positioning step. When the installation ring is translated to the final position, the positioning step surface coincides with the rotation center point O.

[0035] The adjustment frame realizes the XY axis translation function in a similar way, see Figure 1 and Figure 5 The hand screw 3 at the upper end is threadedly matched with the support frame 1. The limit block 21 is pushed by the depth of the hand screw 3 screwed into the support frame 1, so that the translation ring 22, the connecting ring 20, the front knob 17, and the optical element mounting ring 14 are translated along the Y axis in sequence. The pagoda spring 26 provides a reaction force for the translation to ensure that the entire structure can move repeatedly along the Y axis. There are 4 limit blocks 21, evenly distributed around the circumference. Figure 5The two upper and lower limit blocks 21 cooperate with the support frame 1 and can only move along the Y axis, similar to the other two limit blocks 21 that can only move along the X axis. The translation ring 22 cooperates with the boss grooves of the four limit blocks 21 to limit their movement only along the XY axis, and through the transmission of force, the optical element mounting ring 14 is driven to translate along the XY axis. The hand screw 3 that controls the XY axis translation can be locked during the adjustment process by locking the thread.

[0036] Adjust the frame to achieve Z-axis translation function Figure 5 The translation ring 22 is threadedly connected and fastened with the locking ring 25. The translation ring 22 can only move in the XY direction. Therefore, the locking ring 25 cannot rotate and can only move with the translation ring 22. There is a second top screw 23 on the locking ring 25, which can lock it with the rear knob 24. The rear knob 24 is threadedly connected and fastened with the connecting ring 20. The connecting ring 20 is threadedly connected and fastened with the limiting ring 18. Therefore, by locking the second top screw 23, the limiting ring 18, the connecting ring 20, the rear knob 24, the translation ring 22, and the locking ring 25 can be connected as a whole. The front knob 17 has an appropriate clearance fit with the limiting ring 18 and the connecting ring 20. The front knob 17 has a threaded fit with the optical element mounting ring 14. The optical element mounting ring 14 has an appropriate clearance fit with the limiting ring 18 and the connecting ring 20. The longitudinal groove in the optical element mounting ring 14 (i.e., the groove parallel to the Z axis) is limited by the limiting pin 30 in the limiting ring 18 (see Figure 6 ) limits the rotation, so when the front knob 17 rotates, the threaded fit of the optical element mounting ring 14 cannot rotate with it, and can only translate along the Z-axis direction. Similarly, the limit pin 30 translates in the longitudinal groove in the optical element mounting ring 14. The step between the cover 16 and the connecting ring 20 controls the translation stroke of the optical element mounting ring 14, and the front knob 17 can be locked by the first top screw 19 to achieve Z-axis motion locking.

[0037] The adjustment frame realizes the function of rotating around the Z axis. Figure 5 , loosen the second top screw 23, lock the first top screw 19, the rear knob 24 and the locking ring 25 have a clearance fit, and the connecting ring 20 and the support frame 1, the translation ring 22, and the locking ring 25 also have an appropriate clearance fit. Therefore, rotate the rear knob 24, through the connecting ring 20, the limit ring 18, the limit pin 30, the optical element mounting ring 14, the first top screw 19, and the front knob 17 to realize the rotation of the entire structure around the Z axis without translation, and the second top screw 23 can be used for locking during the adjustment process.

[0038] The adjustment frame realizes the rotation function around the X axis. Figure 1 , 2 3. The rotating frame 2 is connected to the support frame 1 through the right pitch bracket 6, the left pitch bracket 12, the cylindrical pin 7, and the fixing screw 9. The cylindrical pin 7 is on both sides, and the support frame 1 can rotate around the axis of the cylindrical pin 7. Figure 1The hand screw 3 on the left side of the middle rotating frame 2 pushes the support frame 1 to rotate around the axis of the cylindrical pin 7 to realize the rotation of the adjustment frame around the X-axis. The compression spring 5 provides a reaction force. The locking screw 8 and the right pitch bracket 6 can be locked together during the adjustment process and limit the angle of rotation around the X-axis.

[0039] Adjust the frame to realize the rotation function around the Y axis. Figure 1 , 5 , 7, the rotating frame 2 is connected to the base 4 through a threaded rotating pin 27. Figure 7 There are two bosses on the base 4, and limit screws 29 are installed. The corresponding rotating frame 2 has corresponding grooves, and the rotating frame 2 can rotate around the axis of the rotating pin 27. Figure 7 The hand-tightened screw 3 on the middle right pushes the boss on the base 4 to rotate around the axis of the rotating pin 27, the compression spring 28 provides a reaction force, the limit screw 29 can limit the angle of rotation around the Y axis, and the locking block 10 and the locking screw 11 can be locked together during the adjustment process.

[0040] Thus, the embodiment of the present invention has the following beneficial effects:

[0041] 1. The adjustment frame enables the optical element to be translated along the XYZ axis, rotated around the XYZ axis and locked with a functional structure and assembly method, especially the translation along the Z axis and the rotation around the Z axis 360 degrees.

[0042] 2. The rotation center axis is fixed, and the translation axis always coincides with the geometric axis of the optical element, which effectively avoids crosstalk in optical path adjustment.

[0043] 3. The thread of the hand-tightened screw in the adjustment frame is an ultra-fine thread, which can accurately control the stroke of the screw ejection to achieve the purpose of fine adjustment.

[0044] 4. The mounting surface of the optical element can be adjusted to the center point O of the XYZ axis by adjusting the XYZ axis translation. The geometric center of the optical element completely coincides with the rotation center of the adjustment frame. At this time, when adjusting a single rotational degree of freedom of the optical path, it will not cause changes in the directions of other degrees of freedom, thus achieving completely crosstalk-free adjustment.

[0045] In summary, the embodiment of the present invention discloses an adjustment frame with six-axis independent adjustment and locking without optical crosstalk. The adjustment frame has a compact structure, high functional integration, and a wide range of applications, and can realize three-dimensional translation and three-dimensional angle rotation adjustment of the installed optical element.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical element adjustment stand, characterized in that: include: A support frame is provided with a translation ring, a first driving mechanism for driving the translation ring to translate along the X-axis, and a second driving mechanism for driving the translation ring to translate along the Y-axis; The translation ring is connected to the connecting ring by an internal thread; An optical element mounting ring, a front knob, a limiting ring and a clamping ring are provided on the left side of the connecting ring, a first top screw is provided between the limiting ring and the front knob; the clamping ring is used to clamp the optical element in the optical element mounting ring, the front knob is connected to the front end of the optical element mounting ring with an internal thread, the limiting ring is provided in a cavity between the front knob and the middle and rear ends of the optical element mounting ring, a groove parallel to the Z axis is also provided on the middle and rear ends of the optical element mounting ring, one end of a limiting pin is accommodated in the groove, and the other end of the limiting pin extends into the limiting ring; the connecting ring is threadedly connected to the limiting ring, and there is a matching gap between the front knob, the limiting ring and the connecting ring; A locking ring and a rear knob are provided on the right side of the connecting ring; the translation ring is threadedly connected to the locking ring, the connecting ring is threadedly connected to the rear knob, there is a matching gap between the rear knob and the locking ring, and a second top screw is provided between the locking ring and the rear knob; Wherein, the first top screw and the second top screw are also used for: When the second top screw is locked and the first top screw is loosened, the front knob is rotated to drive the optical element mounting ring to translate along the Z-axis direction; and When the first top screw is locked and the second top screw is loosened, the rear knob is rotated to drive the optical element mounting to rotate around the Z axis; The specific structure of the second driving mechanism is as follows: a Y-axis hand screw is provided on the support frame, the Y-axis hand screw is threadedly matched with the support frame to push the Y-axis limit block, the boss groove of the Y-axis limit block is matched with the translation ring and is symmetrically distributed one above and one below, and a pagoda spring for providing a reaction force is provided between the lower Y-axis limit block and the support frame; Among them, the specific structure of the first driving mechanism is: an X-axis hand-tightening screw is provided on the support frame, and the X-axis hand-tightening screw cooperates with the support frame thread to push the X-axis limit block, the boss groove of the X-axis limit block cooperates with the translation ring and is symmetrically distributed one on each side, and a pagoda spring for providing a reaction force is provided between the X-axis limit block on the side opposite to the X-axis hand-tightening screw and the support frame.

2. The optical element adjustment stand according to claim 1, characterized in that: Also includes: A rotating frame connected to the support frame by a compression spring; The rotating frame is connected to the supporting frame through a right pitch bracket, a left pitch bracket, a cylindrical pin and a fixing screw, and the cylindrical pin is distributed on the left and right sides; and the rotating frame is also provided with a threaded hand screw to push the supporting frame to rotate around the axis of the cylindrical pin.

3. The optical element adjustment stand according to claim 2, characterized in that: Also includes: Base; The rotating frame is connected to the base via a rotating pin to enable the optical element adjustment frame to rotate around the Y axis.

4. The optical element adjustment mount according to claim 3, characterized in that: Also includes: The base is provided with two bosses of seesaw design, the fulcrum of the seesaw is the rotating pin, the rotating frame is provided with two corresponding grooves, the rotating frame is provided with a hand screw to push a boss on the base to rotate around the axis of the rotating pin, and the other boss is connected to a compression spring to provide a reaction force.

5. The optical element adjustment stand according to claim 4, characterized in that: Also includes: A limit screw to limit the rotation angle around the Y axis; as well as A locking block and a locking screw are used to lock the optical element adjustment frame in a rotational state around the Y axis.

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