Optical fiber scanner centering adjusting structure

Abstract

The utility model discloses an optical fiber scanner centering adjusting structure, a base, an adjusting seat and an optical fiber scanner are sequentially arranged in a shell from back to front, the base is fixedly connected with the shell through a first adjusting assembly, the first adjusting assembly can drive the base to translate in the left-right direction, and the adjusting seat is connected with the base through an elastic connecting piece; the optical fiber scanner is fixedly connected with the adjusting seat, a second adjusting assembly for driving the adjusting seat to deflect in the pitching direction is arranged on the shell, and the optical fiber scanner is fixedly connected with the adjusting seat. According to the invention, the centering adjustment structure has a function of horizontally adjusting the position of the optical fiber scanner through the arrangement of the first adjustment assembly, and the centering adjustment structure has a function of adjusting the deflection angle of the optical fiber scanner in a pitching manner through the elastic connecting piece and the second adjustment assembly. The position translation adjustment and the angle pitching adjustment of the optical fiber scanner are realized by different assemblies of the centering adjustment structure, and the adjustment difficulty is reduced at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber scanning display devices, and particularly relates to a centering adjustment structure of an optical fiber scanner. BACKGROUND

[0002] The imaging principle of the optical fiber scanning projection technology is that an actuator drives a scanning optical fiber to move along a predetermined two-dimensional scanning track, and meanwhile, the light power of a light source is modulated, so that each pixel point information of a to-be-displayed image is projected onto an imaging area one by one, thereby forming a projection picture. In order to achieve a good imaging effect, the optical fiber of the optical fiber scanner needs to have good coaxiality with an imaging lens.

[0003] The packaging of the existing optical fiber scanner is achieved by a connecting piece to realize fixed installation of the optical fiber scanner or by solidified glue to realize fixed installation. However, no matter which fixing mode is used, due to structural or workmanship errors, there will inevitably be a deviation in position or angle, which affects the position of the optical fiber exit light irradiated on the lens, and causes the corresponding exit image to have phenomena such as distortion, eccentricity and difficulty in focusing.

[0004] Meanwhile, the optical fiber scanning device has a small volume, and the maximum diameter of the packaging shell is generally several centimeters to tens of centimeters. It is technically difficult to set a structure meeting the position accurate adjustment function on such a small packaging structure. CONTENT OF THE INVENTION

[0005] The embodiment of the present application provides a centering adjustment structure of an optical fiber scanner, which reduces the assembly and adjustment difficulty under the premise of ensuring assembly precision.

[0006] In order to achieve the above application purpose, the present application provides a centering adjustment structure of an optical fiber scanner, which comprises a shell, a base, an adjustment seat and an optical fiber scanner arranged in the shell in sequence from back to front,

[0007] The base is fixedly connected with the shell through a first adjustment assembly, the first adjustment assembly can drive the base to translate in the left-right direction, the adjustment seat is connected with the base through an elastic connecting piece, the optical fiber scanner is fixedly connected with the adjustment seat, and the shell is provided with a second adjustment assembly for driving the adjustment seat to deflect in the pitch direction;

[0008] The optical fiber scanner is fixedly connected with the adjustment seat.

[0009] The front end of the shell is fixedly installed with an optical lens. Through the first adjustment assembly and the second adjustment assembly, the accurate centering of the optical fiber scanner and the optical lens can be ensured.

[0010] The elastic connecting piece is an elastic material piece with certain deformation and recovery capabilities, such as a plastic piece or a metal piece.

[0011] Preferably, the elastic connecting member only allows the adjustment base to deflect relative to the adjustment base in the pitch direction, and limits the relative displacement of other degrees of freedom between the two.

[0012] Optionally, the elastic connecting member can be an elastic connecting plate or an elastic connecting rib.

[0013] In some embodiments of the present application, the elastic connecting member is an elastic connecting plate extending along a plane parallel to the horizontal plane. The number of elastic connecting plates can be one or more.

[0014] In some embodiments of the present application, the elastic connecting member is a plurality of elastic connecting ribs arranged in sequence in the horizontal direction, and the elastic connecting ribs extend in the front-back direction.

[0015] The first adjustment assembly can adjust the translation of the base in the left-right direction and fix the position of the adjustment base.

[0016] The second adjustment assembly can adjust the deflection angle of the adjustment base in the pitch direction and fix the position of the adjustment base.

[0017] Specifically, the first adjustment assembly includes adjustment bolts arranged on the left and right sides of the base, and the housing is provided with threaded holes for mounting the adjustment bolts. The adjustment bolts are mounted in the corresponding threaded holes by threaded cooperation, and the ends of the adjustment bolts extend into the housing and abut against the corresponding side surfaces of the base. By adjusting the screwing depth of the adjustment bolts on the left and right sides, the distance of the base from the left side of the housing and the distance of the base from the right side of the housing can be adjusted, and the positioning position of the base in the horizontal left-right direction can be adjusted.

[0018] Specifically, the second adjustment assembly includes adjustment bolts arranged on the upper and lower sides of the adjustment base, and the housing is provided with threaded holes for mounting the adjustment bolts. The adjustment bolts are mounted in the corresponding threaded holes by threaded cooperation, and the ends of the adjustment bolts extend into the housing and abut against the corresponding side surfaces of the adjustment base. By adjusting the screwing depth of the adjustment bolts on the upper and lower sides, the distance of the adjustment base from the upper side of the housing and the distance of the adjustment base from the lower side of the housing can be adjusted, and the pitch deflection angle of the first adjustment assembly in the vertical up-down direction can be adjusted by the deformation of the elastic connecting member.

[0019] Alternatively, the first adjustment assembly includes adjustment bolts arranged on the left and right sides of the base, and the left and right side surfaces of the base are respectively provided with threaded holes matched with the adjustment bolts on the corresponding side. The housing is provided with mounting holes for mounting the adjustment bolts, and the mounting holes penetrate the side walls of the housing. The adjustment bolts are mounted in the corresponding mounting holes, and the ends of the adjustment bolts extend into the housing and are connected with the threaded holes on the corresponding side surfaces of the base by threads. By adjusting the screwing depth of the adjustment bolts on the left and right sides, the distance of the base from the left side of the housing and the distance of the base from the right side of the housing can be adjusted, and the positioning position of the base in the horizontal left-right direction can be adjusted.

[0020] Optionally, the second adjusting assembly comprises adjusting bolts arranged on the upper and lower sides of the adjusting base, the upper and lower sides of the adjusting base are respectively provided with threaded holes matched with the adjusting bolts on the corresponding side, the shell is provided with mounting holes for mounting the adjusting bolts, the mounting holes penetrate the side wall of the shell, the adjusting bolts are mounted in the mounting holes on the corresponding side, the ends of the adjusting bolts extend into the shell and are threadedly connected with the threaded holes on the corresponding side of the adjusting base, the hole diameter of the mounting holes is greater than the outer diameter of the screw rod of the adjusting bolts, so as to provide the displacement gap required for the adjusting bolts in the left-right direction during the left-right displacement of the adjusting base with the adjusting base and the displacement gap required for the adjusting bolts in the front-rear direction during the pitching deflection of the adjusting base with the adjusting base. By adjusting the screwing depth of the adjusting bolts on the upper and lower sides, the distance between the adjusting base and the upper side of the shell and the distance between the adjusting base and the lower side of the shell can be adjusted, and the pitching deflection angle of the first adjusting assembly in the up-down direction can be adjusted through the deformation of the elastic connecting piece.

[0021] The one or more technical solutions in the application have at least the following technical effects or advantages:

[0022] The application sets the first adjusting assembly to enable the centering adjusting structure to horizontally adjust the position of the optical fiber scanner, sets the elastic connecting piece and the second adjusting assembly to enable the centering adjusting structure to pitch the deflection angle of the optical fiber scanner, enables the position translation adjustment and the angle pitching adjustment of the optical fiber scanner to be realized by different components of the centering adjusting structure, and reduces the adjustment difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the application;

[0024] Figure 2 It is a structural schematic view after removing the shell. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0026] As shown in Figure 1 , Figure 2 The application provides a centering adjusting structure of an optical fiber scanner 300, which comprises a shell 100, the shell 100 is sequentially provided with a base 201, an adjusting base 202 and the optical fiber scanner 300 in the direction from back to front,

[0027] The base 201 is fixedly connected with the shell 100 through a first adjusting assembly, the first adjusting assembly can drive the base 201 to translate along the left-right direction, the adjusting seat 202 is connected with the base 201 through an elastic connecting piece 203, and the optical fiber scanner 300 is fixedly connected with the adjusting seat 202; and the shell 100 is provided with a second adjusting assembly for driving the adjusting seat 202 to deflect along the pitch direction.

[0028] The optical fiber scanner 300 is fixedly connected with the adjusting seat 202.

[0029] The first adjusting assembly is arranged to enable the centering adjusting structure to horizontally adjust the position of the optical fiber scanner 300, and the elastic connecting piece 203 and the second adjusting assembly are arranged to enable the centering adjusting structure to pitch-adjust the deflection angle of the optical fiber scanner 300, so that the position translation adjustment and the angle pitch adjustment of the optical fiber scanner 300 are realized by different components of the centering adjusting structure, and the adjustment difficulty is reduced.

[0030] The optical lens 400 is fixedly installed at the front end of the shell 100, and the first adjusting assembly and the second adjusting assembly can ensure the accurate centering of the optical fiber scanner 300 and the optical lens 400.

[0031] The elastic connecting piece 203 is an elastic material piece with certain deformation and recovery capabilities, such as a plastic piece or a metal piece.

[0032] Preferably, the elastic connecting piece 203 only allows the adjusting seat 202 to deflect relative to the adjusting seat 202 along the pitch direction and restricts the relative displacement between the two in other degrees of freedom.

[0033] Optionally, the elastic connecting piece 203 can be an elastic connecting plate or an elastic connecting rib.

[0034] In some embodiments of the present application, the elastic connecting piece 203 is an elastic connecting plate, and the elastic connecting plate extends along a plane parallel to the horizontal plane. The number of elastic connecting plates can be one or more.

[0035] In some embodiments of the present application, the elastic connecting piece 203 is a plurality of elastic connecting ribs arranged in sequence along the horizontal direction, and the elastic connecting ribs extend along the front-rear direction.

[0036] The first adjusting assembly can adjust the translation of the base 201 along the left-right direction and fix the position of the adjusting seat 202.

[0037] The second adjusting assembly can adjust the deflection angle of the adjusting seat 202 along the pitch direction and fix the position of the adjusting seat 202.

[0038] Specifically, the first adjusting assembly includes adjusting bolts 501 arranged on the left and right sides of the base 201. The housing 100 is provided with threaded holes for mounting the adjusting bolts 501. The adjusting bolts 501 are mounted in the corresponding threaded holes by threaded cooperation, and the ends thereof extend into the housing 100 and abut against the corresponding side surfaces of the base 201. By adjusting the screwing depth of the adjusting bolts 501 on the left and right sides, the distance of the base 201 from the left side of the housing 100 and the distance of the base 201 from the right side of the housing 100 can be adjusted, and the positioning position of the base 201 in the horizontal left-right direction can be adjusted.

[0039] Specifically, the second adjusting assembly includes adjusting bolts 502 arranged on the upper and lower sides of the adjusting seat 202. The housing 100 is provided with threaded holes for mounting the adjusting bolts 502. The adjusting bolts 502 are mounted in the corresponding threaded holes by threaded cooperation, and the ends thereof extend into the housing 100 and abut against the corresponding side surfaces of the adjusting seat 202. By adjusting the screwing depth of the adjusting bolts 502 on the upper and lower sides, the distance of the adjusting seat 202 from the upper side of the housing 100 and the distance of the adjusting seat 202 from the lower side of the housing 100 can be adjusted. Through the deformation of the elastic connecting member 203, the pitch deflection angle of the first adjusting assembly in the vertical direction can be adjusted.

[0040] Alternatively, the first adjusting assembly includes adjusting bolts 501 arranged on the left and right sides of the base 201. The left and right side surfaces of the base 201 are respectively provided with threaded holes matched with the adjusting bolts 501 on the corresponding side. The housing 100 is provided with mounting holes for mounting the adjusting bolts 501. The mounting holes pass through the side wall of the housing 100. The adjusting bolts 501 are mounted in the corresponding mounting holes, and the ends thereof extend into the housing 100 and are connected with the threaded holes on the corresponding side surfaces of the base 201 by threaded connection. By adjusting the screwing depth of the adjusting bolts 501 on the left and right sides, the distance of the base 201 from the left side of the housing 100 and the distance of the base 201 from the right side of the housing 100 can be adjusted, and the positioning position of the base 201 in the horizontal left-right direction can be adjusted.

[0041] Alternatively, the second adjusting assembly comprises adjusting bolts 502 arranged on the upper and lower sides of the adjusting base 202. The upper and lower sides of the adjusting base 202 are respectively provided with threaded holes matched with the adjusting bolts 502 on the corresponding side. The housing 100 is provided with mounting holes for mounting the adjusting bolts 502. The mounting holes pass through the side wall of the housing 100. The adjusting bolts 502 are mounted in the mounting holes on the corresponding side. The ends of the adjusting bolts 502 extend into the housing 100 and are threadedly connected with the threaded holes on the corresponding side of the adjusting base 202. The hole diameter of the mounting holes is greater than the outer diameter of the screw rod of the adjusting bolt 502, so as to provide the displacement gap required for the adjusting bolt 502 in the left-right direction during the left-right displacement of the adjusting base 202 relative to the base 201 and the displacement gap required for the adjusting bolt 502 in the front-rear direction during the pitching and yawing of the adjusting base 202. By adjusting the screwing depth of the adjusting bolts 502 on the upper and lower sides, the distance between the adjusting base 202 and the upper side of the housing 100 and the distance between the adjusting base 202 and the lower side of the housing 100 can be adjusted. The pitching and yawing angle of the first adjusting assembly in the up-down direction is adjusted by the deformation of the elastic connecting member 203.

[0042] It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that one skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word 'comprising' or 'including' does not exclude the presence of elements or steps other than those listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The usage of the words 'first','second' and 'third', etc. do not limit the number of these elements and do not require any such element to be followed by another one with a different determinant word. The usage of the words 'first','second' and 'third', etc., merely define one of a certain number of such elements, without necessarily requiring any such elements to be present.

[0043] All features disclosed in this specification, unless expressly stated to the contrary, are intended to be within the scope of the present application.

[0044] Any feature described in this specification, unless expressly stated to the contrary, can be replaced by alternative features serving the same, equivalent or similar purpose.

[0045] This application is not restricted to the details of the foregoing specific embodiments. This application extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel method or process steps disclosed in this specification or any novel combination thereof.

Claims

1. A fiber scanner centering adjustment structure, characterized by, The shell is provided with a base, an adjusting seat and an optical fiber scanner in sequence from back to front, The base is fixedly connected with the shell through a first adjusting assembly, the first adjusting assembly drives the base to translate along the left-right direction, the adjusting seat is connected with the base through an elastic connecting piece, the optical fiber scanner is fixedly connected with the adjusting seat, and the shell is provided with a second adjusting assembly for driving the adjusting seat to deflect along the pitch direction. The optical fiber scanner is fixedly connected with the adjusting seat.

2. A fiber scanner centering adjustment structure as claimed in claim 1, characterized in that An optical lens is fixedly installed at the front end of the shell.

3. A fiber scanner centration adjustment structure as claimed in claim 1, wherein, The elastic connecting piece only allows the adjusting seat to deflect along the pitch direction relative to the adjusting seat and limits the relative displacement of other degrees of freedom therebetween.

4. A fiber scanner centering adjustment structure as claimed in claim 1, wherein, The elastic connecting piece is an elastic connecting plate or an elastic connecting rib.

5. A fiber scanner centration adjustment structure as claimed in claim 1, wherein, The first adjusting assembly adjusts the translation of the base along the left-right direction and fixes the position of the adjusting seat.

6. A fiber scanner centration adjustment structure as claimed in claim 1, wherein, The second adjusting assembly adjusts the deflection angle of the adjusting seat along the pitch direction and fixes the position of the adjusting seat.

7. A fiber scanner centration adjustment structure as claimed in claim 1 or 5, characterized in that The first adjusting assembly includes adjusting bolts arranged on the left and right sides of the base, the shell is provided with threaded through holes for mounting the adjusting bolts, the adjusting bolts are mounted in the corresponding threaded through holes through threaded cooperation, and the ends of the adjusting bolts extend into the shell and abut against the corresponding side surfaces of the base.

8. The fiber scanner centration adjustment structure of claim 1 or 6, wherein, The second adjusting assembly includes adjusting bolts arranged on the upper and lower sides of the adjusting seat, the shell is provided with threaded through holes for mounting the adjusting bolts, the adjusting bolts are mounted in the corresponding threaded through holes through threaded cooperation, and the ends of the adjusting bolts extend into the shell and abut against the corresponding side surfaces of the adjusting seat.

9. A fiber scanner centering adjustment structure as claimed in claim 1 or 5, wherein, The first adjusting assembly includes adjusting bolts arranged on the left and right sides of the base, the left and right side surfaces of the base are respectively provided with threaded holes matched with the adjusting bolts on the corresponding side, the shell is provided with mounting holes for mounting the adjusting bolts, the mounting holes penetrate the side walls of the shell, the adjusting bolts are mounted in the mounting holes on the corresponding side, the ends of the adjusting bolts extend into the shell and are connected with the threaded holes on the corresponding side surfaces of the base through threads.

10. The fiber scanner centering adjustment structure of claim 1 or 6, wherein, The second adjusting assembly includes adjusting bolts arranged on the upper and lower sides of the adjusting seat, the upper and lower side surfaces of the adjusting seat are respectively provided with threaded holes matched with the adjusting bolts on the corresponding side, the shell is provided with mounting holes for mounting the adjusting bolts, the mounting holes penetrate the side walls of the shell, the adjusting bolts are mounted in the mounting holes on the corresponding side, the ends of the adjusting bolts extend into the shell and are connected with the threaded holes on the corresponding side surfaces of the adjusting seat through threads, and the hole diameter of the mounting hole is greater than the outer diameter of the screw rod part of the adjusting bolt, so as to provide the displacement gap required for the adjusting bolt in the left-right direction during the left-right displacement of the adjusting seat along with the base and the displacement gap required for the adjusting bolt in the front-back direction during the pitch deflection of the adjusting seat.

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