CN218974754U - Adjustable optical module - Google Patents

Abstract

An adjustable optical module comprises an optical element, an optical bearing seat, a frame, a rotating shaft and a driving assembly. The optical bearing seat bears the optical element. The frame includes a shaft receiving slot. The rotating shaft is positioned between the optical bearing seat and the rotating shaft placing groove, so that the optical bearing seat is adjacent to the frame. The rotating shaft placing groove is provided with a placing cambered surface. The radius of the rotating shaft is smaller than the radius of curvature of the placing cambered surface. The driving assembly drives the optical bearing seat to rotate by taking the rotating shaft as a rotating shaft.

Description

Adjustable optical module

Technical Field

The present utility model relates to an electronic device with an adjustable optical module, and more particularly, to an adjustable optical module.

Background

With the development of technology, electronic products are increasingly requiring a light and thin profile and a good photographic experience. At present, most electronic products are provided with a lens module with a shooting function. However, in order to pursue high-quality photographed images, a structure of the lens module is often disadvantageous to a slim design of the electronic product. Or the focusing function presented by the lens module of the electronic product is poor. Or, the electronic product has a complicated assembly problem.

Disclosure of Invention

In view of the above, according to one embodiment, an adjustable optical module includes an optical element, an optical carrier, a frame, a rotating shaft, and a driving component. The optical bearing seat bears the optical element. The frame includes a shaft receiving slot. The rotating shaft is positioned between the optical bearing seat and the rotating shaft placing groove, so that the optical bearing seat is adjacent to the frame. The rotating shaft placing groove comprises a placing cambered surface. The radius of the rotating shaft is smaller than the radius of curvature of the placing cambered surface. The driving assembly drives the optical bearing seat to rotate by taking the rotating shaft as a rotating shaft.

In some embodiments, the optical carrier further comprises a side groove. The side grooves, the rotating shafts and the rotating shaft placing grooves correspond to each other. The rotating shaft is positioned between the side grooves and the rotating shaft placing groove. The side grooves comprise concave cambered surfaces. The curvature radius of the concave cambered surface is smaller than that of the placing cambered surface.

In some embodiments, the radius of the shaft is equal to the radius of curvature of the concave curved surface.

In some embodiments, one end of the shaft is in substantial contact with the side grooves.

In some embodiments, the tunable optical module further comprises a plurality of intermediaries and a base. The frame further includes a plurality of interposer slots. The base comprises a bottom plate. The bottom plate includes a plurality of guide slots. The intermediate piece placing grooves, the guide grooves and the intermediate pieces correspond to each other. Each intermediate member is positioned between the corresponding intermediate member placement groove and the guide groove. The driving component is used for driving the frame to rotate by taking one axis of the vertical rotating shaft as a rotating shaft.

In some embodiments, the adjustable optical module further comprises a shaft element. The optical carrier further comprises a rear groove. The frame further includes a shaft member placement groove. The shaft element is positioned between the rear groove and the shaft element placement groove with a gap therebetween.

In some embodiments, the two ends of the shaft element substantially contact the rear recess and the shaft element placement groove.

In some embodiments, the shaft member placement groove and the shaft placement groove are located on two adjacent side walls of the frame, respectively.

In some embodiments, the adjustable optical module further includes a base elastic member, and the base includes a base accommodating space. The frame and the optical bearing seat are positioned in the base accommodating space. The first end of the seat elastic piece is fixed on the optical bearing seat; the second end of the seat elastic member is fixed to the base. The seat elastic member has a force to normally push the optical bearing seat towards the rotating shaft.

In some embodiments, the distance from the first end of the seat elastic member to the bottom plate is greater than the distance from the second end of the seat elastic member to the bottom plate.

In some embodiments, the adjustable optical module further comprises a frame elastic member. The frame further comprises an opening. The opening is located in the middle of the frame. The two ends of the frame elastic piece are fixed on the frame. The middle section of the frame elastic piece is clamped and fixed on the base. The position of the opening corresponds to the middle section of the frame elastic piece.

In some embodiments, the tunable optical module further comprises a central axis. The frame further comprises a support plate. The support plate includes a central shaft placement hole and a plurality of intermediate member placement grooves. The bottom plate includes a central aperture. The center shaft is positioned in the center shaft placement hole and the center hole. The central shaft is positioned at a part of the central shaft placement hole and is larger than a part of the central shaft positioned at the central hole. The central axis is substantially perpendicular to the rotation axis. The driving assembly drives the frame to rotate by taking the central shaft as a rotating shaft.

In some embodiments, the central shaft has an upper shaft portion, a collar, and a lower shaft portion. The convex ring is positioned on the outer surface of the central shaft. The collar is in substantial contact with the base plate. The upper shaft portion is located in the center shaft placement hole. The lower shaft portion is located in the central bore.

In summary, according to one embodiment, the optical carrier can rotate relative to the frame about the rotation axis. In addition, in some embodiments, the adjustable optical module has a rotation axis structure and a connection structure of the adjustable optical module, which provide good optical anti-shake compensation effect, and is compact in structure and convenient to assemble.

The utility model will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the utility model thereto.

Drawings

Fig. 1 is a perspective view (one) of an adjustable optical module according to some embodiments.

Fig. 2 is an exploded perspective view of the adjustable optical module shown in fig. 1.

Fig. 3 is a perspective view of a frame of some embodiments.

FIG. 4 is a cross-sectional view of the optical carrier at the position indicated by 4-4 in FIG. 1, showing the connection relationship between the shaft, the frame and the optical carrier.

FIG. 5 is an enlarged view of the location indicated by 5 in FIG. 4, showing the radius of the shaft, the dimensions of the concave arc and the placement arc.

Fig. 6 is a perspective view of an optical carrier of some embodiments.

FIG. 7 is a cross-sectional view of the portion indicated by 7-7 in FIG. 1, showing the connection of the spindle, side grooves and spindle receiving slots.

Fig. 8 is a perspective view (two) of an adjustable optical module according to some embodiments.

Fig. 9 is an exploded perspective view of the adjustable optical module shown in fig. 8.

FIG. 10 is a cross-sectional view taken at the 10-10 position of FIG. 8, showing the frame in a driven rotational position.

Fig. 11 is an exploded perspective view of the frame, base and interposer shown in fig. 8.

FIG. 12 is a cross-sectional view taken at 12-12 of FIG. 8 showing the positions of the axle element, the optical carrier and the frame.

FIG. 13 is a cross-sectional view of the portion 13-13 of FIG. 8 showing the connection of the seat spring, the optical carrier and the base.

FIG. 14 is a cross-sectional view taken at 14-14 of FIG. 8, showing the location of the shaft and shaft element.

Fig. 15 is a perspective view (iii) of an adjustable optical module according to some embodiments.

Fig. 16 is an exploded perspective view of the frame, center shaft and base shown in fig. 15.

FIG. 17 is a cross-sectional view taken at the location indicated by 17-17 in FIG. 15, showing the connection of the center shaft, the center shaft receiving hole and the center hole.

Fig. 18 is an enlarged view of the location indicated at 18 in fig. 17.

FIG. 19 is a cross-sectional view taken at 19-19 of FIG. 15, showing the location of the aperture and the base securing portion.

Fig. 20 is a perspective view of the base shown in fig. 19.

Wherein, the reference numerals:

11 optical element

20 optical bearing seat

21 side grooves

22 rear groove

23, avoiding groove

24 outer flange

25 groove bottom

26 concave cambered surface

27 side end walls

29 rear end wall

201. 202 bearing wall

211 load space

225 gap

30 frame

31 rotating shaft placing groove

32 shaft element placing groove

33, placing cambered surface

34 interposer placement groove

35 end wall is placed on the rotating shaft

36, open pore

37 supporting plate

38 center shaft placing hole

39 frame fixing portion

301. 302 side wall of frame

311, frame accommodating space

321 shaft element placement end wall

41 rotating shaft

42 shaft element

43 center axis

44 upper shaft portion

45 convex ring

46 lower shaft portion

50 base

51 floor board

53 guide groove

53a arc-shaped groove

53b cylindrical groove

54, center hole

58 positioning convex block

59 base fixing portion

511, base accommodating space

60. 60': drive assembly

61. 61': coil

62. 62': magnet

63. 63': position sensor

64. 64': circuit board

70 seat elastic member

72 first end

75 second end

80 interposer

90 frame elastic member

95:

p1, P2 shaft

Alpha arc angle

C1 first frame position

C2 second frame position

D1, D2, D3 length

Radius R4

R3, R2 radius of curvature

B1. First seat

B2. Second seat

L, L': light ray

H2, H5 distance

Detailed Description

The structural and operational principles of the present utility model are described in detail below with reference to the accompanying drawings:

please refer to fig. 1, 2, 3, 4 and 5. Fig. 1 is a perspective view (one) of an adjustable optical module according to some embodiments. Fig. 2 is an exploded perspective view of the adjustable optical module shown in fig. 1. Fig. 3 is a perspective view of a frame of some embodiments. FIG. 4 is a cross-sectional view of the optical carrier at the position indicated by 4-4 in FIG. 1, showing the connection relationship between the shaft, the frame and the optical carrier. FIG. 5 is an enlarged view of the location indicated by 5 in FIG. 4 showing the radius of the shaft, the dimensions of the concave arc and the placement arc.

The adjustable optical module is mounted on an electronic device, such as, but not limited to, a mobile device (e.g., a smart phone, a tablet computer, or a notebook computer), or an electronic device with a photographing function.

The adjustable optical module includes an optical element 11, an optical carrier 20, a frame 30, a rotating shaft 41, and a driving assembly 60.

The optical element 11 may be a prism, or an optical element having a function of reflecting light. For example, the light L may enter the tunable optical module along the Z-axis of fig. 1, be reflected by the optical element 11, leave the tunable optical module along the-Y-axis direction, and be received by a lens module (not shown) in the electronic device for imaging.

The optical carrier 20 carries the optical element 11. The frame 30 includes a rotation shaft placement groove 31. The rotating shaft 41 is located between the optical carrier 20 and the rotating shaft placing groove 31, so that the optical carrier 20 is adjacent to the frame 30. The spindle placement groove 31 includes a placement arcuate surface 33 (see fig. 3). The radius R4 of the rotation shaft 41 is smaller than the radius R3 of curvature of the placement cambered surface 33 (see fig. 5). The shaft 41 may be, but is not limited to, a cylindrical shaft or a ball-type ball. The following description takes the rotary shaft 41 as a cylindrical rotary shaft as an example.

The driving assembly 60 drives the optical carrier 20 to rotate about the rotation axis 41. The drive assembly 60 includes a coil 61, a magnet 62, a position sensor 63, and a circuit board 64. The coil 61 is located on a circuit board 64, which may be a flat plate coil. The position sensor 63 is coupled to a circuit board 64, which may be a hall sensor, a chip for sensing a magnetic field, or other sensor for sensing the position of the magnet 62. The magnet 62 is located on the optical carrier 20, and the magnet 62 is located at the bottom of the optical carrier 20, for example and without limitation. When the coil 61 is driven in a predetermined manner to generate a magnetic force, the electromagnetic force of the coil 61 selectively generates a attraction force or a repulsion force with the magnet 62, so that the optical carrier 20 rotates clockwise or counterclockwise about the rotation shaft 41 (the axis of the rotation shaft 41 is the axis P1 in fig. 2). Details of the rotation of the optical carrier 20 will be described later. It should be noted that the adjustable optical module may include multiple sets of driving components 60. For example, the driving unit 60 for driving the optical carrier 20 to rotate about the first axis is a first driving unit. The driving unit 60 that rotates the driving frame 30 about the second axis is a second driving unit. The first axis and the second axis are substantially perpendicular. The detailed operation of the drive assembly 60 on the two axes will be described below with respect to the first drive assembly and the second drive assembly. Wherein, the reference numeral 60 of the first driving component and the reference numeral 60' of the second driving component are described.

Specifically, in fig. 3, the frame 30 includes a plurality of frame side walls 301, 302. A frame sidewall 302 is connected between the two frame sidewalls 301 to form a frame accommodating space 311, and the frame accommodating space 311 is used for accommodating the optical carrier 20. The frame 30 includes a rotation shaft placement groove 31. The shaft accommodating groove 31 has an accommodating cambered surface 33 and a shaft accommodating end wall 35. In fig. 4, the rotation shaft 41 is located between the optical carrier 20 and the rotation shaft placement groove 31, so that the optical carrier 20 is adjacent to the frame 30. In fig. 5, the arc center of the placement arc surface 33 is at a distance from the axis of the rotation shaft 41. The radius of curvature R3 is greater than the radius R4. The concave cambered surface 26 is in substantial contact (point contact) with the rotation shaft 41. Thus, the optical carrier 20 can rotate about an axis relative to the frame 30.

On the other hand, please refer to fig. 2 and 6. Fig. 6 is a perspective view of an optical carrier of some embodiments. The optical carrier 20 includes a plurality of carrier walls 201, 202 and a plurality of outer ledges 24. Two supporting walls 201 and one supporting wall 202 are connected to form a supporting space 211 for supporting the optical element 11. Each outer flange 24 is connected to a respective one of the carrier walls 201, 202. The outer flange 24 is located above the frame side walls 301, 302, respectively (i.e., the Z-axis position of the outer flange 24 in fig. 2 is higher than the Z-axis position of the frame side walls 301, 302).

The outer flange 24 attached to the carrier wall 201 includes side grooves 21. The side grooves 21 have concave cambered surfaces 26 and side end walls 27 (see fig. 6). In fig. 2, the opening of the side groove 21 located on the same side is opposite to the opening of the rotation shaft placing groove 31. One rotation shaft 41 corresponds to one side groove 21 and one rotation shaft placement groove 31. In fig. 5, the radius of curvature R2 is smaller than the radius of curvature R3. The radius of curvature R2 of the concave cambered surface 26 is substantially equal to the radius R4 of the rotating shaft 41. In this way, there is no gap between the optical carrier 20 and the rotating shaft 41, for example, the optical carrier 20 and the rotating shaft 41 are connected by glue, and the friction between the rotating shaft 41 and the placing cambered surface 33 is small, so that the optical carrier 20 can be driven to rotate by using the rotating shaft 41 as the rotating shaft, and the effects of stability and small rotation resistance are achieved.

The detailed operation of the first driving assembly 60 driving the optical carrier 20 to rotate is shown in fig. 4. The optical carrier 20 is driven by the first driving unit 60 to rotate about the rotation axis 41. The optical carrier 20 rotates between a first position B1 and a second position B2. The first seat position B1 and the second seat position B2 may be positions corresponding to the maximum angles at which the first driving assembly 60 drives the optical carrier 20 to rotate counterclockwise and clockwise (from the perspective of fig. 4). The optical carrier 20 can be driven to be located at any position between the first and second seat positions B1 and B2. The direction in which the first driving unit 60 drives the optical carrier 20 to rotate about the rotation axis 41 is referred to as a PITCH direction (also referred to as a nod direction).

In addition, please refer to fig. 7. FIG. 7 is a cross-sectional view taken at the 7-7 position of FIG. 1, showing the connection of the spindle, side grooves and spindle placement slots. One end of the rotation shaft 41 is substantially in contact with the side groove 21; the other end is substantially in contact with the rotation shaft accommodating groove 31. In fig. 7, the end of the shaft 41 near the optical carrier 20 is substantially in contact with the side end wall 27. The end of the shaft 41 adjacent the frame 30 may be in substantial contact with the shaft-receiving end wall 35 or may be in substantial contact with the shaft-receiving end wall, or may be in a gap of a size that does not interfere with the positioning of the frame 30 and the optical carrier 20. For example, the positioning effect of the distance (gap) between the side end wall 27 and the rotating shaft placement end wall 35 on the rotating shaft 41 may be a slight displacement of the optical carrier 20 relative to the frame 30 along the X-axis, where the slight displacement does not affect the precision of the adjustable optical module.

Please refer to fig. 3, fig. 4 and fig. 6. In some embodiments, the tunable optical module further includes a shaft element 42. The shaft member 42 may be, but is not limited to, a cylindrical shaft or a spherical ball. The following description takes the shaft element 42 as an example of a cylindrical shaft body. The optical carrier 20 further comprises a rear recess 22 (see fig. 6). The frame 30 further includes a shaft member placement groove 32 (see fig. 3). In fig. 4, the shaft member 42 is located between the rear recess 22 and the shaft member placement groove 32. There is a gap 225 between the rear recess 22 and the shaft member 42. The size of the gap 225 can be changed as the optical carrier 20 rotates between the first seat position B1 and the second seat position B2. For example, when the optical carrier 20 is located at the first seat position B1, the gap 225 is minimal; in the second seating position B2, the gap 225 is greatest. In this manner, the shaft member 42 may act as a stop member for the maximum counterclockwise rotation of the PITCH direction.

On the other hand, in fig. 3, the shaft member placing groove 32 and the rotating shaft placing groove 31 are respectively located at the adjacent two side walls of the frame 30. The shaft member placement groove 32 is located at the frame side wall 302. The spindle placement groove 31 is located in the frame side wall 301. Thus, the assembly structure of the adjustable optical module can be compact.

Please refer to fig. 8, 9 and 10. Fig. 8 is a perspective view (two) of an adjustable optical module according to some embodiments. Fig. 9 is an exploded perspective view of the adjustable optical module shown in fig. 8. FIG. 10 is a cross-sectional view, indicated at 10-10 in FIG. 8, showing the frame in a driven rotational position.

According to one embodiment, the tunable optical module includes an optical element 11, an optical carrier 20, a frame 30, a shaft element 42, a base 50, a plurality of intermediaries 80, and a driving assembly 60. The optical carrier 20 carries the optical element 11. The optical carrier 20 includes a rear recess 22. The frame 30 includes a shaft member placement slot 32 and a plurality of intermediate member placement slots 34. The shaft member 42 is located in the rear recess 22 and the shaft member receiving groove 32. Both ends of the shaft member 42 substantially contact the rear recess 22 and the shaft member placement groove 32. The base 50 includes a bottom plate 51 and a plurality of guide grooves 53, and the guide grooves 53 are located on the bottom plate 51. The interposer rest grooves 34, the guide grooves 53, and the interposers 80 correspond. Each interposer 80 is positioned between the corresponding interposer placement slot 34 and the guide slot 53 such that there is a first position and a second position between the frame 30 and the base 50. The driving assembly 60 is used for driving the frame 30 to selectively locate at the first position and the second position. In this way, when the driving unit 60 (i.e. the second driving unit 60') drives the frame 30 to rotate about an axis as the rotation axis through the shaft element 42, the optical carrier 20 is also rotated. The rotational direction of the frame 30 is referred to as the YAW-direction rotation (also referred to as the panning direction).

The second driving assembly 60' drives the frame 30 to perform detailed operations as shown in fig. 9 and 10. The second drive assembly 60' includes a magnet 62', a coil 61', a position sensor 63', and a circuit board 64'. In the embodiment of fig. 9, the second drive assembly 60' includes two magnets 62', two coils 61', a position sensor 63', and two circuit boards 64'. Two magnets 62' are located on either side of the frame 30. The coil 61' and the circuit board 64' are located on the base 50 at positions corresponding to the magnets 62 '. In fig. 10, the second driving unit 60' drives the frame 30 to be selectively positioned at the first frame position C1 and the second frame position C2. The first frame position C1 and the second frame position C2 may be positions corresponding to maximum angles at which the second driving unit 60' drives the frame 30 to rotate counterclockwise and clockwise about the axis P2 (+y-axis direction), respectively. The frame 30 may be driven to be located at any one of the positions between the first frame position C1 and the second frame position C2.

Referring to fig. 11, fig. 11 is an exploded perspective view of the frame, base and interposer shown in fig. 8. The base 50 includes a bottom plate 51 and a base accommodating space 511. The base accommodating space 511 is used for accommodating the frame 30, the optical carrier 20 and the optical element 11. The bottom plate 51 of the base 50 has a plurality of guide grooves 53. The opening of the guide groove 53 is directed toward the frame 30. The frame 30 includes a plurality of interposer rest slots 34. The interposer placement groove 34 opens toward the bottom plate 51. The interposer placement groove 34, the guide groove 53, and the interposer 80 correspond. Each guide groove 53 corresponds to one interposer placing groove 34 and accommodates one interposer 80. The interposer 80 is located between the frame 30 and the base 50. The intermediate member 80 is used for assisting the rotation of the frame 30 driven by the second driving assembly 60'. The intermediary member 80 may be a ball, a cylindrical roller or a member having a rolling function. The intermediary member 80 is used as a ball as described below.

The positional relationship among the optical carrier 20, the shaft member 42, and the frame 30 is shown in fig. 12. FIG. 12 is a cross-sectional view taken at 12-12 of FIG. 8 showing the positions of the axle element, the optical carrier and the frame. Substantially as described in the above embodiments, the shaft member 42 is located between the rear recess 22 of the optical carrier 20 and the shaft member receiving groove 32 of the frame 30. The rear recess 22 comprises a recess bottom 25 and a rear end wall 29 (see fig. 6). In fig. 12, the groove bottom 25 of the rear groove 22 and the shaft element 42 have a gap 225 therebetween. Both ends of the shaft member 42 substantially contact the rear recess 22 and the shaft member placement groove 32. The rear end wall 29 substantially contacts both ends of the shaft member 42. The shaft member placement end walls 321 also substantially contact both ends of the shaft member 42. In this way, the optical carrier 20 and the driven frame 30 can rotate in the YAW direction simultaneously, so that the optical carrier 20 does not rotate after the frame 30 rotates by a small angle.

In addition, please refer to fig. 9. In some embodiments, the adjustable optical module further includes a rotation shaft 41. The optical carrier 20 further comprises a side groove 21. The frame 30 further includes a shaft receiving slot 31. The side grooves 21, the rotating shaft 41 and the rotating shaft placing groove 31 correspond. The rotation shaft 41 is located between the side grooves 21 and the rotation shaft accommodating groove 31. The driving assembly 60 drives the optical carrier 20 to rotate about the rotation axis 41. The driving assembly 60 (i.e. the first driving assembly 60) drives the optical carrier 20 to rotate in the PITCH direction about the rotation axis 41, which is substantially the same as the above embodiment, and will not be described herein. In this way, the adjustable optical module has two sets of driving components 60 (the first driving component 60 and the second driving component 60'), and can adjust the rotation (PITCH direction rotation and YAW direction rotation) of the optical element 11 with two rotation axes.

Refer to fig. 13 and 14 for details of maintaining the optical carrier 20 in a normal position. FIG. 13 is a cross-sectional view of the optical carrier, the elastic member and the base, taken at the position indicated by 13-13 in FIG. 8. FIG. 14 is a cross-sectional view taken at 14-14 of FIG. 8, showing the location of the shaft and shaft element. Referring to fig. 9, in some embodiments, the adjustable optical module further includes a seat elastic member 70. The seat elastic member 70 maintains the optical carrier 20 at a normal position. The seat elastic member 70 may be a reed or an element having elasticity. The first end 72 of the seat elastic member 70 is fixed to the optical carrier 20; the second end 75 of the seat spring 70 is secured to the base 50. The seat elastic member 70 has a force to normally push the optical carrier 20 toward the rotation shaft 41.

In fig. 13, a first end 72 of the seat spring 70 is attached to the outer flange 24. The second end 75 of the seat spring 70 is connected to the base 50. The distance H2 from the first end 72 to the surface of the bottom plate 51 is greater than the distance H5 from the second end 75 to the surface of the bottom plate 51, so the seat elastic member 70 normally presses the optical carrier 20 toward the base 50, so that the optical carrier 20 is maintained at the normal position. The normal position may be a horizontal position of the optical carrier 20 or a predetermined inclination angle of the optical carrier 20. The normal position is a rest position where the optical carrier 20 is not driven by the first driving component 60 and is maintained by the seat elastic member 70 only. In fig. 14, when the optical carrier 20 is horizontally placed on the frame 30 (i.e. the optical carrier 20 is in the normal position), the concave arc surface 26 of the optical carrier 20 contacts the rotating shaft 41, but a predetermined gap (such as the gap 225 in fig. 14) is provided between the rear groove 22 of the optical carrier 20 and the shaft element 42.

In addition, in some embodiments, the seat elastic member 70 may be fixed to the optical carrier 20 at the first end 72 and fixed to the frame 30 at the second end 75. Since the optical carrier 20 rotates in the PITCH direction relative to the frame 30, the elastic member 70 connected between the optical carrier 20 and the frame 30 also has the functions of the foregoing embodiments.

In addition, please refer to fig. 11. The guide groove 53 of the base 50 may be an arc groove 53a or a cylindrical groove 53b. In fig. 11, the base 50 includes three guide grooves 53, which are an arc-shaped groove 53a and two cylindrical grooves 53b, respectively. Each channel 53 receives an intermediate member 80. The diameter of the cylindrical recess 53b is larger than the diameter of the corresponding intermediary member 80. The arc-shaped groove 53a has an arc-shaped track. The arc angle α is defined by two straight lines from the two ends of the arc track to the rotation axis (axis P2) of the frame 30. The magnitude of the arc angle alpha determines the length of the arc track. In this way, the arc-shaped groove 53a can restrict the rotation of the frame 30 within a certain angular range. In some embodiments, the arc angle α is about 5 to 10 degrees.

Please refer to fig. 9 and 10. In some embodiments, the adjustable optical module further includes a frame elastic member 90. The frame 30 includes a frame fixing portion 39. The base 50 includes a base fixing portion 59. The frame elastic member 90 is fixed at both ends to the base fixing portion 59. The middle section of the frame elastic member 90 is fixed to the frame fixing portion 39. The frame elastic member 90 serves to stabilize the position of the frame 30. The frame elastic member 90 may be a reed or an element having elasticity. In fig. 10, the base 50 includes two base fixing portions 59. The frame spring 90 is located between the frame side wall 302 and the base 50. The frame fixing portion 39 is located in the middle of the frame side wall 302. The distance from the frame fixing portion 39 to each base fixing portion 59 is approximately equal. In this way, when the frame 30 rotates in the YAW direction about the axis P2, the tension of the frame elastic member 90 is substantially the same at both ends of the frame 30 to stabilize the rotation axis position of the frame 30. In addition, in some embodiments, the adjustable optical module may also include a plurality of frame elastic members 90, for example 2 or 4, which may be adjusted according to the material of the frame elastic members 90. One end of each frame elastic member 90 is fixed to the frame fixing portion 39; the other end is fixed to the base fixing portion 59. The multiple frame elastic members 90 also function as described in the embodiment of fig. 10.

Please refer to fig. 15 and 16. Fig. 15 is a perspective view (iii) of an adjustable optical module according to some embodiments. Fig. 16 is an exploded perspective view of the frame, center shaft and base of the embodiment of fig. 15.

According to one embodiment, the tunable optical module includes an optical element 11, a frame 30, a base 50, a plurality of intermediaries 80, a central shaft 43, and a driving component 60. The frame 30 includes a plurality of side walls and a support plate 37. The side walls and the support plate 37 form a frame accommodating space 311. The optical element 11 is located in the frame accommodating space 311. The support plate 37 has a plurality of interposer rest grooves 34 and a center shaft rest hole 38. The base 50 includes a bottom plate 51. The bottom plate 51 includes a plurality of guide grooves 53 and a central hole 54. The interposer rest grooves 34, the guide grooves 53, and the interposers 80 correspond. Each interposer 80 is positioned between the corresponding interposer placement slot 34 and the guide slot 53 such that there is a first position and a second position between the frame 30 and the base 50. The center shaft 43 is located in the center shaft placement hole 38 and the center hole 54. The center shaft 43 is located at a portion of the center shaft placement hole 38 larger than a portion of the center shaft 43 located at the center hole 54. The driving assembly 60 is used for driving the frame 30 to selectively locate at the first position and the second position. The distance from the first position to the central axis 43 is equal to the distance from the second position to the central axis 43. In this way, the frame 30 is driven by the second driving unit 60' to rotate about the central shaft 43 (rotation in the YAW direction). The detailed operation of the YAW direction rotation of the frame 30 is substantially as described in the above embodiment, and will not be described here. The relationship between the center shaft 43, the frame 30 and the base 50 will be described below.

Please refer to fig. 16, 17 and 18. FIG. 17 is a cross-sectional view taken at the location indicated by 17-17 in FIG. 15, showing the connection of the center shaft, center shaft receiving hole and center hole. Fig. 18 is an enlarged view of the location indicated at 18 in fig. 17. The frame 30 includes a support plate 37, frame side walls 301, 302, and a frame accommodating space 311. The optical element 11 is located in the frame accommodating space 311. The support plate 37 and the frame side walls 301, 302 may be integrally formed components or may be connected by a locking structure. The support plate 37 has a plurality of interposer rest grooves 34 and a center shaft rest hole 38. The bottom plate 51 of the base 50 includes a central aperture 54 and a plurality of guide slots 53. The center shaft 43 is located between the center shaft placement hole 38 and the center hole 54.

In fig. 17, the center shaft 43 has an upper shaft portion 44, a collar 45, and a lower shaft portion 46. The collar 45 is located on the outer surface of the central shaft 43. The convex ring 45 is an upper shaft 44 at one end of the central shaft 43; the other end of the collar 45 to the central shaft 43 is a lower shaft portion 46. When the center shaft 43 is positioned between the center shaft placement hole 38 and the center hole 54, the upper shaft portion 44 is positioned in the center shaft placement hole 38, and the lower shaft portion 46 is positioned in the center hole 54. The collar 45 is in substantial contact with the surface of the base plate 51. In fig. 18, the length D1 of the upper shaft portion 44 is equal to or greater than the length D2 of the lower shaft portion 46. In this way, the collar 45 can support the position of the central shaft 43. When the frame 30 rotates in the YAW direction about the center axis 43 (the axis of the center axis 43 is the axis P2 in fig. 16), the frame 30 has a substantial rotation axis, and the stability of the rotation of the frame 30 can be improved. It should be noted that, the optical carrier 20 has a avoidance structure (such as the avoidance groove 23 in fig. 17) at a position corresponding to the central axis 43. The depth of the recess 23 is enough to accommodate the central shaft 43, so that the rotation of the optical carrier 20 is not hindered by the central shaft 43 from rotating in the PITCH direction. The material of the intermediate member 80 and the support plate 37 may be metal, so that the friction force between the intermediate member 80 and the intermediate member placement groove 34 is small and the rotation of the frame 30 is smooth.

Further, please refer to fig. 18. In some embodiments, the central axis 43 is located at a depth of the central aperture 54 that is less than the depth of the central aperture 54 at the bottom plate 51. As shown in fig. 18, the length D2 of the lower shaft portion 46 is less than the length D3 of the central bore 54.

In some embodiments, the central shaft 43 is fixedly connected to the bottom plate 51 (e.g., by glue, or by using an insert molding element), i.e., there is no relative displacement between the central shaft 43 and the base 50, and the frame 30 rotates about the central shaft 43.

In addition, referring to fig. 16, in some embodiments, the guiding groove 53 of the base 50 is a cylindrical groove 53b. Each cylindrical recess 53b is substantially equidistant from the central bore 54. In fig. 16, each channel 53 receives an interposer 80. The diameter of the cylindrical recess 53b is larger than the diameter of the corresponding intermediary member 80. Since the movable space of each of the interposers 80 in the cylindrical recess 53b is substantially equal, the interposers 80 are less likely to be caught in the cylindrical recess 53b.

Please refer to fig. 19 and 20. FIG. 19 is a cross-sectional view taken at 19-19 in FIG. 15, showing the location of the aperture and the base securing portion. Fig. 20 is a perspective view (two) of the base of the embodiment of fig. 19. In some embodiments, the frame 30 further includes an aperture 36. The opening 36 is located in the middle of the frame 30. The frame elastic member 90 is fixed to the frame 30 at both ends thereof. The middle section of the frame elastic member 90 is engaged and fixed to the base 50. The location of the aperture 36 corresponds to the middle section of the frame spring 90. In this way, since the frame side wall 302 is provided with the opening 36, the installer can fix the frame elastic member 90 to the base fixing portion 59 through the opening 36, thereby facilitating assembly.

In fig. 19, the frame side wall 302 of the frame 30 includes the opening 36 and two frame fixing portions 39. The opening 36 is located in the middle of the frame sidewall 302. The frame fixing portions 39 are located on both sides of the opening 36. In fig. 20, the base fixing portion 59 is provided with a positioning projection 58. The middle section of the frame elastic member 90 is provided with an engaging portion 95 (see fig. 16) corresponding to the positioning protrusion 58.

Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model, as will be apparent to those skilled in the art, without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (13)

1. An adjustable optical module, comprising:

an optical element;

an optical bearing seat for bearing the optical element;

a frame including a rotating shaft placement groove;

the rotating shaft is positioned between the optical bearing seat and the rotating shaft placing groove, so that the optical bearing seat is adjacent to the frame, the rotating shaft placing groove comprises a placing cambered surface, and a radius of the rotating shaft is smaller than a curvature radius of the placing cambered surface; and

the driving component drives the optical bearing seat to rotate by taking the rotating shaft as a rotating shaft.

2. The adjustable optical module as recited in claim 1, wherein the optical carrier further comprises a side groove, the rotating shaft and the rotating shaft accommodating groove correspond to each other, the rotating shaft is located between the side groove and the rotating shaft accommodating groove, the side groove comprises a concave cambered surface, and a radius of curvature of the concave cambered surface is smaller than that of the accommodating cambered surface.

3. The tunable optical module of claim 2, wherein the radius of the rotational axis is equal to the radius of curvature of the concave curved surface.

4. The tunable optical module of claim 2, wherein one end of the shaft is in substantial contact with the side groove.

5. The tunable optical module of claim 1, further comprising a plurality of interposers and a base, wherein the frame further comprises a plurality of interposers slots, the base comprises a base plate, the base plate comprises a plurality of guide slots, the interposers slots, the guide slots, and the interposers, each of the interposers is located between a corresponding one of the interposers slots and the guide slots, and the driving assembly drives the frame to rotate about an axis perpendicular to the rotation axis.

6. The tunable optical module of claim 5, further comprising a shaft element, the optical carrier further comprising a rear recess, the frame further comprising a shaft element receiving recess, the shaft element being positioned between the rear recess and the shaft element receiving recess, a gap being provided between the rear recess and the shaft element.

7. The tunable optical module of claim 6, wherein the two ends of the shaft element substantially contact the rear recess and the shaft element placement groove.

8. The adjustable optical module according to claim 6, wherein the shaft element receiving groove and the rotating shaft receiving groove are respectively located at two adjacent side walls of the frame.

9. The adjustable optical module of claim 5, further comprising a seat elastic member, wherein the seat comprises a seat accommodating space, the frame and the optical carrier are disposed in the seat accommodating space, a first end of the seat elastic member is fixed to the optical carrier, a second end of the seat elastic member is fixed to the seat, and the seat elastic member comprises a force to normally push the optical carrier toward the rotating shaft.

10. The adjustable optical module according to claim 9, wherein a distance from the first end of the seat elastic member to the base plate is greater than a distance from the second end of the seat elastic member to the base plate.

11. The adjustable optical module of claim 5, further comprising a frame elastic member, wherein the frame further comprises an opening, the opening is located in a middle portion of the frame, two ends of the frame elastic member are fixed to the frame, a middle portion of the frame elastic member is fastened to the base, and a position of the opening corresponds to a middle portion of the frame elastic member.

12. The adjustable optical module as recited in claim 5, further comprising a central shaft, wherein the frame further comprises a support plate, the support plate comprises a central shaft placement hole and the interposer placement grooves, the bottom plate comprises a central hole, the central shaft is located in the central shaft placement hole and the central hole, a portion of the central shaft located in the central shaft placement hole is larger than a portion of the central shaft located in the central hole, the central shaft is substantially perpendicular to the rotation axis, and the driving assembly drives the frame to rotate about the central shaft as the rotation axis.

13. The adjustable optical module according to claim 12, wherein the central shaft has an upper shaft portion, a collar and a lower shaft portion, the collar being located on an outer surface of the central shaft, the collar being in substantial contact with the base plate, the upper shaft portion being located in the central shaft placement hole, the lower shaft portion being located in the central hole.

Images