CN212321979U

CN212321979U - Image scanner light path structure and image scanner

Info

Publication number: CN212321979U
Application number: CN202021862519.8U
Authority: CN
Inventors: 吴坤优; 全超; 张金品; 王艳
Original assignee: Guilin Woodpecker Medical Instruments Co Ltd
Current assignee: Guilin Woodpecker Medical Instruments Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-01-08
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses an image scanner light path structure and image scanner relates to computer X ray photography imaging technical field. Including base, laser instrument module and light reflection module, it is provided with the mounting hole to correspond on the base, the laser instrument module is worn to locate in the mounting hole, the light reflection module passes through the mount pad setting and is in on the base, the laser instrument module with the light reflection module can respectively for base adjustment fixed position, so that the light-emitting focal length of laser instrument module with the light reflection module is corresponding, the laser beam warp of laser instrument module transmission the light reflection module reflects to the image board, is used for right latent image information of image board record scans the excitation. The application discloses image scanner light path structure and image scanner can finely tune the light path of formation of image to promote the formation of image quality.

Description

Image scanner light path structure and image scanner

Technical Field

The utility model relates to a computer X radiographic imaging technical field particularly, relates to an image scanner light path structure and image scanner.

Background

Computer Radiography (CR) has been widely used in the medical health field, and is mainly characterized by using a flexible and erasable Image Plate (IP) instead of a silver halide film and storing and displaying image information by a computer, compared with the conventional Radiography technology.

The X-ray penetrates the object and irradiates the Image plate containing the light-excited fluorescent powder, and a frame Latent Image (Latent Image) is generated and stored in the Image plate. When laser with a certain wavelength is used for irradiation, the image plate can excite fluorescence with a specific wavelength, the energy distribution characteristic of the fluorescence is completely related to the shape of a latent image, and the fluorescence is collected, converted into an electric signal and digitized, so that the latent image is converted into a two-dimensional digital image which can be stored and transmitted.

In the prior art, the precision of the light path for irradiating the image plate by using laser is high, and the conventional arrangement mode is not beneficial to the adjustment of the imaging light path and influences the imaging quality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an image scanner light path structure and image scanner can finely tune the light path of formation of image to promote the imaging quality.

The embodiment of the utility model is realized like this:

the embodiment of the utility model provides an aspect provides an image scanner light path structure, including base, laser instrument module and light reflection module, it is provided with the mounting hole to correspond on the base, the laser instrument module is worn to locate in the mounting hole, the light reflection module passes through the mount pad setting and is in on the base, the laser instrument module with the light reflection module can respectively for base adjustment fixed position, so that the light-emitting focus of laser instrument module with the light reflection module is corresponding, the laser beam warp of laser instrument module transmission light reflection module reflection to image board is used for right the latent image information of image board record scans the excitation.

Optionally, the mounting base includes a first fixing plate and a second fixing plate connected to each other, the first fixing plate is connected to the base, and the second fixing plate is connected to the light reflection module.

Optionally, a positioning hole is formed in the center of the first fixing plate, a plurality of fixing holes are further formed in the first fixing plate, and the first fixing plate is positioned with the base through the positioning hole and connected with the base through the fixing holes.

Optionally, the optical reflection module includes the support frame, and sets up linear electric motor and speculum on the support frame, the speculum with the support frame passes through the axis of rotation and rotates the connection, linear electric motor's output with speculum plain noodles supports and holds, the speculum with be provided with the elasticity piece that resets between the support frame, be used for making the speculum has and deviates from the output supports and holds power direction pivoted trend, wherein, the support frame with the second fixed plate is connected, just the support frame or second fixed plate junction is provided with the slotted hole.

Optionally, the light reflection module includes a swing motor and a reflector connected to an output shaft of the swing motor, wherein the swing motor is connected to the second fixing plate, and a slot is disposed at a joint of the second fixing plate.

Optionally, the frequency of the mirror swing is 150Hz to 500 Hz.

Optionally, the maximum deflection angle of the mirror oscillation is less than or equal to 30 °.

Optionally, a fastener is disposed on a side wall of the mounting hole, and the laser module can be axially adjusted along the mounting hole and fixed by the fastener.

In another aspect of the embodiments of the present invention, an image scanner is provided, which includes an image bearing plate and an optical path structure of the image scanner described above; the image scanner further comprises a light receiving cover arranged on the base and a photoelectric converter corresponding to the light receiving cover, wherein the photoelectric converter is used for receiving the fluorescence of the stimulated radiation of the image plate collected by the light receiving cover.

Optionally, a through hole is formed in the light receiving cover, so that the laser beam reflected by the light reflection module is incident on the image bearing plate.

The utility model discloses beneficial effect includes:

the embodiment of the utility model provides an image scanner light path structure and image scanner through the mounting hole that corresponds the setting on the base, and when the mounting hole was worn to locate by the laser instrument module, mounting hole axial displacement can be followed. The light reflection module passes through the mount pad setting on the base for light reflection module and laser instrument module assembly are in same part, are favorable to guaranteeing position degree between them, and then guarantee the stability of light path transmission. The laser module and the light reflection module can be respectively adjusted to fixed positions relative to the base so that the light-emitting focal length of the laser module corresponds to the light reflection module, the imaged light path can be finely adjusted, and the quality of the light path is adjusted to the best state. The laser beam that the laser instrument module launched reflects to the image board through the light reflection module, is favorable to promoting the latent image information to the image board recording and carries out the effect of scanning the excitation to promote the formation of image quality.

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 structural diagram of an image scanner according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of an image scanner according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

fig. 4 is a partially enlarged view of fig. 2 at B.

Icon: 100-image scanner; 105-an image plate; 110-a base; 120-a laser module; 130-a light reflection module; 132-a support frame; 134-linear motor; 136-a mirror; 140-a mount; 142-a first retaining plate; 1422-positioning holes; 144-a second fixing plate; 150-a fastener; 160-image carrier plate; 170-collecting the light shade; 172-via holes; 180-photoelectric converter.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "inside", "outside", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, the present embodiment provides an optical path structure of an image scanner, including a base 110, a laser module 120 and a light reflection module 130, wherein the base 110 is correspondingly provided with a mounting hole, the laser module 120 is disposed in the mounting hole in a penetrating manner, the light reflection module 130 is disposed on the base 110 through a mounting seat 140, the laser module 120 and the light reflection module 130 can respectively adjust a fixed position relative to the base 110, so that an outgoing focal length of the laser module 120 corresponds to the light reflection module 130, and a laser beam emitted by the laser module 120 is reflected to an image plate 105 through the light reflection module 130 for scanning and exciting latent image information recorded by the image plate 105.

Specifically, the laser module 120 is used for emitting a laser beam for exciting latent image information recorded on the image plate 105, and the laser module 120 includes a laser source and an optical module on a light path of the laser source. The optical module can converge the laser beam emitted by the laser source to improve the laser beam directly emitted by the laser source, so as to improve the quality of the laser emitted by the laser module 120.

Because the laser emitted from the laser module 120 has a converging characteristic, in order to ensure the quality of the optical path, the relative positions of the laser module 120 and the light reflection module 130 need to be kept within a preset range, so that the light-emitting focal length of the laser module 120 corresponds to the light reflection module 130, thereby improving the quality of the optical path. In the actual production and processing process, a certain processing error exists, which may cause deviation between the actually generated optical path and the expected optical path in the actual assembly process, thereby affecting the use effect.

This application is through wearing to locate laser module 120 in the mounting hole for laser module 120 can be followed the mounting hole axial and adjusted, so that laser module 120's light-emitting focus can be adjusted according to the installation effect of reality. Meanwhile, the light reflection module 130 may also adjust the fixed position relative to the base 110, which is beneficial to adjusting the laser beam incident to the light reflection module 130, so that the irradiation range of the laser beam reflected to the image plate 105 is on the image plate 105, and the reflected laser beam is prevented from generating deviation.

The embodiment of the utility model provides an image scanner light path structure, through the mounting hole that corresponds the setting on base 110, when laser instrument module 120 wears to locate in the mounting hole, can follow the axial removal of mounting hole. Light reflection module 130 passes through mount pad 140 and sets up on base 110 for light reflection module 130 and laser instrument module 120 assemble at same part, are favorable to guaranteeing both's position degree, and then guarantee the stability of light path transmission. The laser module 120 and the light reflection module 130 can be respectively adjusted to a fixed position relative to the base 110, so that the light-emitting focal length of the laser module 120 corresponds to the light reflection module 130, and the imaging light path can be finely adjusted, so that the quality of the light path can be adjusted to an optimal state. The laser beam emitted by the laser module 120 is reflected to the image plate 105 through the light reflection module 130, which is beneficial to improving the effect of scanning and exciting the latent image information recorded by the image plate 105, thereby improving the imaging quality.

As shown in fig. 1 and 3, the mounting base 140 includes a first fixing plate 142 and a second fixing plate 144 connected to each other, the first fixing plate 142 is connected to the base 110, and the second fixing plate 144 is connected to the light reflection module 130.

Specifically, the first fixing plate 142 and the second fixing plate 144 may be integrally formed or separated, as long as the stable connection between the light reflection module 130 and the base 110 can be ensured. When being connected between light reflection module 130 and base 110 through mount pad 140, can be earlier with light reflection module 130 and mount pad 140 fixed connection, be connected between and the base 110 again, be favorable to reducing the installation degree of difficulty, also be favorable to going on simultaneously with light reflection module 130's installation of the installation of other parts on base 110, be favorable to promoting the installation effectiveness.

As shown in fig. 3, a positioning hole 1422 is disposed in the center of the first fixing plate 142, a plurality of fixing holes are further disposed on the first fixing plate 142, and the first fixing plate 142 is positioned with the base 110 through the positioning hole 1422 and connected with the base 110 through the fixing holes.

Specifically, by providing the positioning hole 1422 in the center of the first fixing plate 142, the mounting position of the first fixing plate 142 can be positioned when the mounting base 140 is connected to the base 110 through the first fixing plate 142. Meanwhile, when the first fixing plate 142 is fixed, the first fixing plate 142 can rotate along the positioning hole 1422 to finely adjust the first fixing plate 142, so that a scanning line formed by the light reflected by the light reflection module 130 on the image plate 105 is parallel to one side of the image plate 105, which is beneficial to improving the scanning quality.

As shown in fig. 2 and 4, in an alternative embodiment of the present application, the light reflection module 130 includes a supporting frame 132, and a linear motor 134 and a reflector 136 that are disposed on the supporting frame 132, the reflector 136 is rotatably connected to the supporting frame 132 through a rotating shaft, an output end of the linear motor 134 abuts against a backlight surface of the reflector 136, an elastic reset element is disposed between the reflector 136 and the supporting frame 132, and is used for enabling the reflector 136 to have a tendency of rotating away from a direction of an abutting force of the output end, wherein the supporting frame 132 is connected to a second fixing plate 144, and a slot is disposed at a connection position of the supporting frame 132 or the second fixing plate 144.

Specifically, the reflector 136 is used to change the transmission direction of the optical path, so that the laser beam emitted from the laser module 120 is incident on the image plate 105. When the reflecting mirror 136 is rotatably coupled to the supporting bracket 132 by the rotating shaft, the laser beam incident to the reflecting mirror 136 is directed to different positions of the impact plate when the reflecting mirror 136 rotates. By abutting the output end of the linear motor 134 against the backlight surface of the reflector 136, the reflector 136 can be pushed to rotate along the rotation axis when the linear motor 134 moves. By arranging the elastic reset piece between the reflector 136 and the supporting frame 132, when the reflector 136 retracts at the output end of the linear motor 134, the reflector 136 timely rotates, so that when the output end of the linear motor 134 extends again, the reflector 136 can be pushed to rotate again. The mirror 136 is rotated back and forth within a certain range by the cooperation of the linear motor 134 and the elastic restoring member, and the reflection direction of the laser beam is changed while the mirror 136 is rotated, so that the laser beam is rotated within a certain range to form a scanning line.

It should be noted that the present embodiment does not specifically limit the arrangement form of the linear motor 134 and the elastic reset element, as long as the mirror 136 can be stably rotated back and forth. For example, linear motor 134 may be a voice coil motor including a magnet and a coil that are spaced apart, and applying a voltage to the coil generates a current in the coil, which in turn generates a force on the coil that is proportional to the current, causing the coil and magnet to move axially relative to each other within the air gap, the direction of movement being determined by the direction of current flow through the coil. In the embodiment of the present application, the coil may be connected to the supporting frame 132, and the magnet may be connected to the mirror 136 to provide a pushing force to the mirror 136, where the magnet is equivalent to the output end of the linear motor 134. The voice coil motor has the characteristics of rapidness, smoothness, no cog, no lag response and the like, so that the voice coil motor can be well applied to control high-speed, high-acceleration and linear forces, and the voice coil motor is few in parts for assembling, simple in assembling, convenient and fast to assemble, reliable to use, favorable for improving the use performance and capable of reducing the assembling difficulty.

In addition, the elastic restoring member and the arrangement form thereof are not particularly limited in the embodiments of the present application as long as the mirror 136 can be made to satisfy the required movement. For example, the elastic restoring member may be configured as a compression spring, and the output end of the linear motor 134 is located at both sides of the rotation shaft. The elastic reset member may also be provided in the form of a spring, and the spring is disposed on the supporting frame 132 and abuts against the reflector 136, so that the spring provides the elastic force required by the rotation of the reflector 136.

Through the arrangement of the slot at the joint of the supporting frame 132 or the second fixing plate 144, when the supporting frame 132 is connected with the second fixing plate 144, the relative position between the supporting frame 132 and the second fixing plate 144 can be adjusted according to actual requirements, thereby achieving the fine adjustment of the position of the light reflection module 130 and more conveniently changing the transmission direction of the light path.

In another alternative embodiment of the present application, the light reflection module 130 includes a swing motor, and a reflection mirror 136 connected to an output shaft of the swing motor, wherein the swing motor is connected to the second fixing plate 144, and a slot is disposed at a connection position of the second fixing plate 144.

Specifically, the swing motor swings a certain angle according to a conversion ratio of a certain voltage to the angle, so that the reflecting mirror 136 rotates back and forth within a certain range, and the reflecting direction of the laser beam is changed while the reflecting mirror 136 rotates, so that the laser beam rotates within a certain range to form a scanning line. Similarly, by providing the slot at the joint of the second fixing plate 144, when the swing motor is connected to the second fixing plate 144, the relative position between the swing motor and the second fixing plate 144 can be adjusted according to actual requirements, thereby implementing fine adjustment of the position of the light reflection module 130, and changing the transmission direction of the light path more conveniently.

Optionally, the frequency of the oscillating mirror 136 is 150Hz to 500 Hz. Specifically, when the mirror 136 rotates back and forth with respect to the rotation axis, the mirror oscillates back and forth. The frequency of the oscillating mirror 136 may be set to 150Hz, 250Hz, 350Hz or 400Hz according to the moving speed of the image plate 105, so that the scanning line formed by the laser beam on the image plate 105 is stable and reliable, and the imaging quality is improved.

Optionally, the maximum deflection angle of the mirror 136 swing is less than or equal to 30 °. As shown in fig. 4, the dotted boxes in fig. 4 represent the left and right extreme rotational positions of the mirror 136, respectively, and the rotational angle between the left and right extreme rotational positions is less than or equal to 30 °. As an example, the maximum deflection angle of the swing of the mirror 136 may be set to be equal to 10 °, 15 °, or 20 °. When the deflection angle is large, the swing stroke of the reflector 136 is too large, which is not beneficial to the lifting of the swing frequency.

As shown in fig. 1, the side wall of the mounting hole is provided with a fastener 150, and the laser can be axially adjusted along the mounting hole and fixed by the fastener 150.

Specifically, when the laser module 120 is too far away or too close to the light reflection module 130, the laser assembly may be axially adjusted along the mounting hole, so that the distance between the laser module 120 and the light reflection module 130 is optimally adjusted and fixed by the fastener 150. For example, the fastening member 150 of the present application may employ a screw-supported component such as a bolt, which may simplify the assembly form and improve the installation and debugging efficiency.

As shown in fig. 1, an embodiment of the present invention further provides an image scanner 100, which includes an image carrier 160 and the optical path structure of the image scanner in the foregoing embodiment; the image scanner 100 further includes a light-receiving cover 170 disposed on the base 110, and a photoelectric converter 180 corresponding to the light-receiving cover 170, wherein the photoelectric converter 180 is configured to receive fluorescence emitted by the image plate 105 and collected by the light-receiving cover 170.

Specifically, the working process of the image scanner 100 of the present application is that when the laser beam emitted from the laser module 120 irradiates the light reflection module 130, the light reflection module 130 swings back and forth at a specific frequency, so that the laser beam is reflected and then sweeps back and forth on the image plate 105 to form a scanning line. The surface of image plate 105 illuminated by the scan lines emits fluorescent light having an intensity consistent with the energy of the latent image. These fluorescent lights are collected by the light receiving cover 170, and the optical signals are amplified and converted into electrical signals by the photoelectric converter 180 provided corresponding to the light receiving cover 170. When the image plate 105 moves linearly, the whole image plate 105 is scanned by the scanning line, and the information of the whole image plate 105 is converted into an electric signal through the combined action of the light receiving cover 170 and the photoelectric converter 180, so that the user can store the information conveniently. The photoelectric converter 180 may be a photomultiplier tube to perform the conversion of the desired signal.

Optionally, as shown in fig. 2, a through hole 172 is formed on the light receiving cover 170, so that the laser beam reflected by the light reflection module 130 is incident to the image bearing plate 160.

Specifically, through the through hole 172 opened on the light-receiving cover 170, the laser beam can pass through the light-receiving cover 170 and form a scanning line on the image plate 105, and the fluorescence emitted by the image plate 105 is collected by the light-receiving cover 170. By adopting the above form, the light receiving cover 170, the laser module 120 and the light reflection module 130 do not need to consider the problems of light shielding and the like, which is beneficial to improving the compactness of the equipment and improving the quality of the scanning line. In addition, the image carrier 160 of the present application can be configured to be a linear driving type, which is beneficial to make the image plate 105 perform a linear motion when scanning the image plate 105, so as to scan the whole image plate 105.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an image scanner light path structure, its characterized in that, includes base, laser instrument module and light reflection module, it is provided with the mounting hole to correspond on the base, the laser instrument module wears to locate in the mounting hole, the light reflection module passes through the mount pad setting and is in on the base, the laser instrument module with the light reflection module can respectively for base adjustment fixed position, so that the light-emitting focus of laser instrument module with the light reflection module is corresponding, the laser beam warp of laser instrument module transmission light reflection module reflection to image board is used for right the latent image information of image board record scans the excitation.

2. The optical path structure of claim 1, wherein the mounting base comprises a first fixing plate and a second fixing plate connected to each other, the first fixing plate is connected to the base, and the second fixing plate is connected to the light reflection module.

3. The optical path structure of claim 2, wherein a positioning hole is disposed at the center of the first fixing plate, and a plurality of fixing holes are disposed on the first fixing plate, and the first fixing plate is positioned with the base through the positioning hole and connected with the base through the fixing holes.

4. The optical path structure of image scanner as claimed in claim 2, wherein the optical reflection module comprises a supporting frame, and a linear motor and a reflector disposed on the supporting frame, the reflector is rotatably connected to the supporting frame via a rotating shaft, an output end of the linear motor abuts against a backlight surface of the reflector, an elastic reset member is disposed between the reflector and the supporting frame, so that the reflector tends to rotate in a direction deviating from the abutting force of the output end, wherein the supporting frame is connected to the second fixing plate, and a slot is disposed at a joint of the supporting frame or the second fixing plate.

5. The optical path structure of claim 2, wherein the optical reflection module comprises a swing motor and a mirror connected to an output shaft of the swing motor, wherein the swing motor is connected to the second fixing plate, and a slot is disposed at a connection position of the second fixing plate.

6. The optical path structure of image scanner as claimed in claim 4 or 5, wherein the frequency of the oscillating mirror is 150 Hz-500 Hz.

7. The optical path structure of image scanner as claimed in claim 4 or 5, wherein the maximum deflection angle of the mirror swing is less than or equal to 30 °.

8. The optical path structure of claim 1, wherein a fastening member is disposed on a side wall of the mounting hole, and the laser module is axially adjustable along the mounting hole and fixed by the fastening member.

9. An image scanner, comprising an image carrier plate and the optical path structure of the image scanner of any one of claims 1-8; the image scanner further comprises a light receiving cover arranged on the base and a photoelectric converter corresponding to the light receiving cover, wherein the photoelectric converter is used for receiving the fluorescence of the stimulated radiation of the image plate collected by the light receiving cover.

10. The image scanner of claim 9, wherein the light-receiving cover has a through hole for allowing the laser beam reflected by the light-reflecting module to be incident on the image-bearing plate.