CN217384660U

CN217384660U - Lens focal length debugging equipment and lens centre gripping subassembly based on CCD formation of image

Info

Publication number: CN217384660U
Application number: CN202220965181.1U
Authority: CN
Inventors: 黄立新; 黄弢; 杨忠平; 饶刚建
Original assignee: Sichuan Juke Optical Technology Co ltd
Current assignee: Sichuan Juke Optical Technology Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-09-06
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses a lens focal length debugging device and a lens clamping component based on CCD imaging, the lens clamping component comprises a fixed cylinder, the fixed cylinder is used for being installed on a base of the debugging device; the clamping assemblies are movably arranged on the fixed cylinder and can move towards the axis direction of the fixed cylinder to clamp the lens to be tested; the driving assembly is arranged on the fixed cylinder and is used for driving the clamping assembly to act and then clamping the lens to be tested; the driving assembly comprises a guide rod, one end of the guide rod extends into the fixed cylinder, and the guide rod is in sliding fit with the fixed cylinder. The utility model can realize the rapid focusing of the lens in the actual use, and has the advantages of simple structure and convenient operation; and simultaneously, the utility model also provides a lens centre gripping subassembly, its fast and stable centre gripping that can realize the lens improves the clamping efficiency of lens, can guarantee going on of focusing.

Description

Lens focal length debugging equipment and lens centre gripping subassembly based on CCD formation of image

Technical Field

The utility model relates to a lens test technical field, concretely relates to lens centre gripping subassembly, simultaneously, the utility model discloses still relate to a lens focus debugging equipment based on CCD formation of image.

Background

A lens is a commonly used optical element widely used in optical systems, and the focal length is an important parameter reflecting the characteristics of the lens. The focal length of the lens plays an important role in optical imaging, optical filtering, laser detection and the like. Measuring the focal length of the lens is of great significance.

Currently, the measurement of the short focal length generally adopts a magnification method: after parallel light is emitted by a collimator tube with a built-in target to a lens to be detected, the parallel light is imaged at the focal point of the lens through a positive lens and is imaged at the side of the collimator tube through a negative lens; placing a microscope behind the lens to be detected to find a clear imaging surface of the lens; at the moment, the target imaging size is read through the scales and the magnification of the visible area of the microscope, and then the focal length of the lens to be measured is calculated. Obviously, the method has very limited focal length of the negative lens which can be measured due to the limitation of the working distance of the microscope; for the positive lens with longer focal length, the test difficulty and time are also increased due to the limitation of the operation area and the collimation in the optical axis direction.

Utility model with application number CN202120932270.1 discloses a focus testing arrangement, include: a collimator for emitting parallel light and having a target built therein; the auxiliary lens is positioned on the transmission light path of the parallel light and is fixed in position; a movable fixed focus CCD camera for imaging; and the lens to be measured is placed between the auxiliary lens and the fixed-focus CCD camera and is within the focal length range of the auxiliary lens.

This focus testing arrangement in the in-service use, need guarantee that auxiliary lens and lens that awaits measuring are in on the same axis, lens mounting fixture among the prior art when fixed lens adopts one side centre gripping arm fixed, and one side centre gripping arm activity need adjust the height of lens once more after fixing the lens, and the operation is inconvenient. Therefore, equipment for realizing lens focusing and a clamping tool for the lens are urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lens focal length debugging device based on CCD imaging, which can realize the rapid focusing of the lens in the actual use and has the advantages of simple structure and convenient operation;

and simultaneously, the utility model also provides a lens centre gripping subassembly, its fast and stable centre gripping that can realize the lens improves the clamping efficiency of lens, can guarantee going on of focusing.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a lens gripping assembly, comprising:

the fixed cylinder is used for being installed on a base of the debugging equipment;

the clamping assemblies are movably arranged on the fixed cylinder and can move towards the axis direction of the fixed cylinder to clamp the lens to be tested;

the driving assembly is arranged on the fixed cylinder and is used for driving the clamping assembly to act and then clamping the lens to be tested;

the driving assembly comprises a guide rod, an arc-shaped clamping arm and a spring, wherein one end of the guide rod extends into the fixed cylinder and is in sliding fit with the fixed cylinder, the arc-shaped clamping arm is positioned in the fixed cylinder and is fixedly connected with the guide rod, the spring is sleeved on the guide rod outside the fixed cylinder, one end of the spring is fixedly connected with the guide rod, and the other end of the spring is in contact with the fixed cylinder; the driving assembly is used for driving the arc-shaped clamping arms to move towards or away from the axis direction of the fixed cylinder simultaneously.

The driving assembly comprises a rotating cylinder and a driving cylinder, wherein the rotating cylinder is in threaded connection with the fixed cylinder, the driving cylinder is coaxial with the fixed cylinder and is arranged in the fixed cylinder in a sliding manner, guide blocks with the same number of guide rods are arranged on the driving cylinder, a first inclined plane is arranged on each guide block, a guide groove is arranged on each guide rod, and a second inclined plane corresponding to the first inclined plane is arranged in each guide groove; the rotating cylinder is rotatably connected with the driving cylinder.

Further optimize, the rotary cylinder is connected with a connecting part used for cladding the outer side wall of the fixed cylinder.

Further inject, be provided with anti-skidding line on the connecting portion.

Wherein, the protection lines are anti-skid concave lines or anti-skid convex lines.

Further optimize, fixed section of thick bamboo is provided with spacing portion, and the driving cylinder is provided with the ring channel with the section of thick bamboo contact one side of rotating, be provided with a plurality of balls in the ring channel, be located and be provided with a plurality of supporting spring between driving cylinder and the spacing portion, under supporting spring's effect, the driving cylinder passes through the ball with the section of thick bamboo of rotating and realizes rotating the connection.

Wherein, the centre gripping subassembly has two, and two centre gripping subassemblies symmetrical arrangement are on fixed section of thick bamboo.

Further optimize, be provided with anti-skidding blotter in the arc type arm lock.

The disclosed lens focus debugging equipment based on CCD formation of image of this embodiment, concrete structure is as follows, and it includes base, fixed parallel light emission subassembly, the standard auxiliary lens and the tight focus CCD camera of slidable mounting on the base that set up on the base, and the tight focus CCD camera is connected with actuating mechanism, actuating mechanism is used for driving the tight focus CCD camera and removes on the base, is located and is provided with lens centre gripping subassembly between standard auxiliary lens and the tight focus CCD camera, and lens centre gripping unit mount is on the base.

Wherein, the driving mechanism is a screw rod driving mechanism.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a lens centre gripping subassembly can realize the stable centre gripping of the lens that awaits measuring, in the actual use, will await measuring the lens and use the vacuum adsorption dish to adsorb, then move it to arc-shaped arm lock department, at this moment, through drive assembly drive guide arm removal, and then make arc-shaped arm lock be close to the lens, carry out centre gripping fixed with the lens; when the lens needs to be taken down, the vacuum adsorption disc is used for adsorbing the lens, then the driving assembly resets, the guide rod resets under the action of the spring, and at the moment, the arc-shaped clamping arm is far away from the lens to loosen the lens; the utility model discloses can realize the stable centre gripping of lens in the in-service use, be convenient for realize the focus test of lens, more importantly, in this embodiment, drive assembly is used for driving the arc type arm lock and moves towards or keep away from solid fixed cylinder axis direction simultaneously, sets up like this and can guarantee to fix a position the back with the central point of solid fixed cylinder and centre gripping subassembly just before the installation, and the lens axis of awaiting measuring after the clamping will keep in same position, does not need the later stage to adjust behind the lens clamping, and it is more convenient to use, improves the efficiency of lens clamping.

Meanwhile, the utility model also discloses a lens focus debugging device based on CCD imaging, which emits parallel light through the arranged parallel light emitting component in actual use, and simultaneously clamps and fixes the lens to be measured on the lens clamping component, so that the axis of the lens to be measured and the axis of the standard auxiliary lens are collinear, and the fixed-focus CCD camera is used for imaging; when the device is used, the emitted parallel light rays emitted by the parallel light emitting component firstly pass through the standard auxiliary lens, then the fixed-focus CCD camera is moved, and the focal length of the standard auxiliary lens is determined through an image formed by the fixed-focus CCD camera; then clamping the lens to be measured on the lens clamping assembly, moving the fixed-focus CCD camera to enable parallel light rays to sequentially pass through the standard auxiliary lens and the lens to be measured to be projected on the fixed-focus CCD camera, determining the focal length of a combined lens formed by the standard auxiliary lens and the lens to be measured, and then calculating the focal length of the lens to be measured according to the focal length of the standard auxiliary lens and the focal length of the combined lens; the utility model discloses when carrying out lens focus debugging, have the convenient advantage of test.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of the overall structure of the lens clamping assembly of the present invention.

Fig. 2 is a schematic view of the internal structure of the lens holding assembly of the present invention.

Fig. 3 is a schematic view of an overall structure of the first embodiment of the present invention.

Fig. 4 is a partially enlarged view of a portion a in fig. 2 according to the present invention.

Reference numerals:

101-base, 102-parallel light emitting component, 103-standard auxiliary lens, 104-CCD camera, 105-lens clamping component, 106-fixed cylinder, 107-clamping component, 108-lens to be measured, 109-driving component, 110-guide rod, 111-arc clamping arm, 112-spring, 113-rotating cylinder, 114-driving cylinder, 115-guide block, 116-first inclined plane, 117-guide groove, 118-second inclined plane, 119-limiting part, 120-annular groove, 121-ball, 122-supporting spring and 123-connecting part.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "vertical," "horizontal," "top," "bottom," and the like refer to an orientation or positional relationship based on that shown in the drawings, which is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the embodiments of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features through another feature not in direct contact. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

Referring to fig. 1-4, the present embodiment discloses a lens focal length debugging device based on CCD imaging, which includes a base 101, a parallel light emitting assembly 102 fixedly disposed on the base 101, a standard auxiliary lens 103 slidably mounted on the base 101, and a fixed-focus CCD camera 104, wherein the fixed-focus CCD camera 104 is connected to a driving mechanism for driving the fixed-focus CCD camera 104 to move on the base 101, a lens clamping assembly 105 is disposed between the standard auxiliary lens 103 and the fixed-focus CCD camera 104, and the lens clamping assembly 105 is mounted on the base 101;

the driving mechanism is a screw rod driving mechanism, the position of the fixed-focus CCD camera 104 can be conveniently adjusted through the arranged screw rod driving mechanism, and meanwhile, the fixed-focus CCD camera is more stable in moving.

In actual use, parallel light rays are emitted through the arranged parallel light emitting assembly 102, and meanwhile, the lens 108 to be measured is clamped and fixed on the lens clamping assembly 105, so that the axis of the lens 108 to be measured is collinear with the axis of the standard auxiliary lens 103, and the fixed-focus CCD camera 104 is used for imaging; when in use, the emitted parallel light rays emitted by the parallel light emitting component 102 firstly pass through the standard auxiliary lens 103, then the fixed-focus CCD camera 104 is moved, and the focal length of the standard auxiliary lens 103 is determined by the image formed by the fixed-focus CCD camera 104; then clamping the lens 108 to be measured on the lens clamping component 105, moving the fixed focus CCD camera 104 to enable parallel light rays to sequentially pass through the standard auxiliary lens 103 and the lens 108 to be measured and project on the fixed focus CCD camera 104, determining the focal length of a combined lens formed by the standard auxiliary lens 103 and the lens 108 to be measured, and then calculating the focal length of the lens 108 to be measured according to the focal length of the standard auxiliary lens 103 and the focal length of the combined lens; the utility model discloses when carrying out lens focus debugging, have the convenient advantage of test.

In this embodiment, the lens holding assembly 105 has the following structure:

the lens holding assembly 105 includes:

a fixed cylinder 106, wherein the fixed cylinder 106 is used for being installed on the base 101 of the debugging equipment;

the clamping assemblies 107 are movably mounted on the fixed cylinder 106 and can move towards the axis direction of the fixed cylinder 106 to clamp the lens 108 to be tested;

the driving assembly 109 is installed on the fixed cylinder 106 and used for driving the clamping assembly 107 to act and then clamping the lens 108 to be tested;

the driving assembly 109 comprises a guide rod 110, an arc-shaped clamping arm 111 and a spring 112, wherein one end of the guide rod 110 extends into the fixed cylinder 106 and is in sliding fit with the fixed cylinder 106, the arc-shaped clamping arm 111 is positioned in the fixed cylinder 106 and is fixedly connected with the guide rod 110, the spring 112 is sleeved on the guide rod 110 outside the fixed cylinder 106, one end of the spring 112 is fixedly connected with the guide rod 110, and the other end of the spring is in contact with the fixed cylinder 106; the driving assembly 109 is used for driving the arc-shaped clamping arm 111 to move towards or away from the axial direction of the fixed cylinder 106.

The lens clamping assembly 105 can realize stable clamping of the lens 108 to be tested, in actual use, the lens 108 to be tested is adsorbed by a vacuum adsorption disc and then is moved to the arc-shaped clamping arm 111, at the moment, the guide rod 110 is driven to move by the driving assembly 109, so that the arc-shaped clamping arm 111 is close to the lens, and the lens is clamped and fixed; when the lens needs to be taken down, the vacuum adsorption disc is used for adsorbing the lens, then the driving assembly 109 is reset, the guide rod 110 is reset under the action of the spring 112, and at the moment, the arc-shaped clamping arm 111 is far away from the lens to loosen the lens; the utility model discloses can realize the stable centre gripping of lens in the in-service use, be convenient for realize the focus test of lens, more importantly, in this embodiment, drive group 109 piece is used for driving arc type arm lock 111 and moves towards or keep away from solid fixed cylinder 106 axis direction simultaneously, sets up like this and can guarantee to put the location back with the central point of solid fixed cylinder 106 and centre gripping subassembly 107 just before the installation, and the lens 108 axis that awaits measuring after the clamping will keep in same position, does not need the later stage to adjust behind the lens clamping, and it is more convenient to use, improves the efficiency of lens clamping.

The utility model discloses a lens centre gripping subassembly 105 mainly is in order to realize carrying out concentric centre gripping to the lens of different diameters size, that is, install lens centre gripping subassembly 105 back on base 101 at the installation initial stage, lens centre gripping subassembly 105 later stage will await measuring lens 108 and carry out the centre gripping after, the axis of lens 108 that awaits measuring all can carry out the coincidence with auxiliary lens's axis, need not adjust the height of lens 108 that awaits measuring after 108 clamping of lens that awaits measuring once more, it is more convenient in the time of the operation.

The driving assembly 109 comprises a rotating cylinder 113 which is in threaded connection with the fixed cylinder 106 and a driving cylinder 114 which is coaxial with the fixed cylinder 106 and is arranged in the fixed cylinder 106 in a sliding manner, guide blocks 115 with the same number of guide rods 110 are arranged on the driving cylinder 114, a first inclined plane 116 is arranged on the guide blocks 115, a guide groove 117 is arranged on the guide rods 110, and a second inclined plane 118 corresponding to the first inclined plane 116 is arranged in the guide groove 117; the rotary cylinder 113 is rotatably connected to the drive cylinder 114.

In this embodiment, the fixed cylinder 106 is provided with a limiting portion 119, an annular groove 120 is provided on a surface of the driving cylinder 114 contacting the rotating cylinder 113, a plurality of balls 121 are provided in the annular groove 120, a plurality of support springs 122 are provided between the driving cylinder 114 and the limiting portion 119, and the driving cylinder 114 and the rotating cylinder 113 are rotatably connected through the balls 121 under the action of the support springs 122.

Thus, in practical use, the guide rod 110 and the arc-shaped clamping arm 111 are synchronously driven to move towards the direction of the lens 108 to be tested, so that the lens 108 to be tested is clamped in a self-centering manner; under the action of the supporting spring 122, the driving cylinder 114 is rotationally connected with the rotating cylinder 113 through the ball 121, when the lens 108 to be tested needs to be clamped, the rotating cylinder 113 is rotated, the driving cylinder 114 is driven to move towards the clamping assembly 107, and at the moment, the guide block 115 and the guide groove 117 can realize the directional movement of the guide rod 110; meanwhile, under the action of the first inclined plane 116 and the second inclined plane 118, the guide rod 110 moves toward the lens 108 to be tested, and clamps the lens 108 to be tested, and at this time, the spring 112 and the supporting spring 122 are both in a compressed state; when the lens 108 to be tested is loosened, the rotating cylinder 113 is reset, at this time, the driving cylinder 114 is reset under the action of the supporting spring 122, meanwhile, the guide block 115 moves towards the direction away from the guide groove 117, the guide rod 110 is reset under the action of the spring 112, and then the lens 108 to be tested is loosened.

Wherein, the rotating cylinder 113 is connected with a connecting part 123 for coating the outer side wall of the fixed cylinder 106; this facilitates the rotation of the rotary cylinder 113.

Wherein, the connecting part 123 is provided with anti-skid grains; further limiting, the protective grains are anti-skid concave grains or anti-skid convex grains. The anti-slip function can be achieved when the rotary cylinder 113 is rotated.

In the present embodiment, there are two clamping assemblies 107, and the two clamping assemblies 107 are symmetrically arranged on the fixed cylinder 106.

Wherein, be provided with anti-skidding blotter in the arc type arm lock 111, the anti-skidding blotter of setting can make arc type arm lock 111 play buffering and skid-proof purpose in the centre gripping lens 108 that awaits measuring, can be better carry out the centre gripping with lens 108 that awaits measuring.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.

Claims

1. A lens holding assembly, comprising:

2. The lens holding assembly of claim 1, wherein: the driving assembly comprises a rotating cylinder and a driving cylinder, the rotating cylinder is in threaded connection with the fixed cylinder, the driving cylinder is coaxial with the fixed cylinder and is arranged in the fixed cylinder in a sliding mode, guide blocks with the same number of guide rods are arranged on the driving cylinder, first inclined planes are arranged on the guide blocks, guide grooves are formed in the guide rods, and second inclined planes corresponding to the first inclined planes are arranged in the guide grooves; the rotating cylinder is rotatably connected with the driving cylinder.

3. The lens holding assembly of claim 2, wherein: the rotating cylinder is connected with a connecting part used for coating the outer side wall of the fixed cylinder.

4. A lens holding assembly according to claim 3, wherein: the connecting part is provided with anti-skid grains.

5. The lens holding assembly of claim 4, wherein: the protection lines are anti-skid concave lines or anti-skid convex lines.

6. The lens holding assembly of claim 2, wherein: the fixed cylinder is provided with spacing portion, and the driving cylinder is provided with the ring channel with a rotating cylinder contact one side, be provided with a plurality of balls in the ring channel, be located and be provided with a plurality of supporting spring between driving cylinder and the spacing portion, under supporting spring's effect, the driving cylinder passes through the ball with a rotating cylinder and realizes rotating the connection.

7. The lens holding assembly of any one of claims 1 to 6, wherein: the clamping assemblies are two, and the two clamping assemblies are symmetrically arranged on the fixed cylinder.

8. The lens holding assembly of claim 7, wherein: an anti-skid buffer pad is arranged in the arc-shaped clamping arm.

9. The utility model provides a lens focus debugging equipment based on CCD formation of image, includes the base, its characterized in that: the lens clamping device comprises a base, and is characterized by further comprising a parallel light emitting assembly fixedly arranged on the base, a standard auxiliary lens and a fixed focus CCD camera which are slidably arranged on the base, wherein the fixed focus CCD camera is connected with a driving mechanism, the driving mechanism is used for driving the fixed focus CCD camera to move on the base, a lens clamping assembly is arranged between the standard auxiliary lens and the fixed focus CCD camera, the lens clamping assembly is arranged on the base, and the lens clamping assembly is the lens clamping assembly according to any one of claims 1-8.

10. The device for adjusting focal length of lens based on CCD imaging according to claim 9, wherein: the driving mechanism is a screw rod driving mechanism.