WO2020133110A1

WO2020133110A1 - Light field lamp assembly, light field indicator and radiotherapy device

Info

Publication number: WO2020133110A1
Application number: PCT/CN2018/124492
Authority: WO
Inventors: 唐子明; 王慧亮; 杨跃明
Original assignee: 深圳市奥沃医学新技术发展有限公司
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2020-07-02
Also published as: CN212298858U

Abstract

A light field lamp assembly (100), a light field indicator and a radiotherapy device, relating to the technical field of radiotherapy devices, and being used for improving the accuracy of radiation field verification. The light field lamp assembly (100) comprises an optical component. The optical component comprises a light source (110) and a condensing lens group (120) provided on one side of the light source (110), the condensing lens group (120) comprising at least two condensing lenses (121, 122) which are coaxially provided. The light field indicator comprises the light field lamp assembly (100) mentioned in the solution above. The radiotherapy device comprises the light field indicator mentioned in the solution above. The light field lamp assembly (100) provided by the present solution is used for simulating an irradiation position of a radiation beam in the radiotherapy device.

Description

Light field lamp assembly, light field indicator and radiotherapy equipment

Technical field

The invention relates to the technical field of radiotherapy equipment, in particular to a light field lamp assembly, a light field indicator and a radiotherapy equipment.

Background technique

At this stage, when removing tumor cells of the human body, the electron beam generated by the electron accelerator is usually used to bombard the target to generate a radiation beam (such as an X-ray radiation beam), and the radiation beam is used to lethally kill the tumor cells in the patient's lesion area. .

Because the radiation beam is usually invisible to the human eye, and the radiation beam will also damage the normal cells of the human body, in order to avoid the radiation beam irradiating the non-focal area of the human body, usually, before the radiation treatment, the visible light of the light field indicator will be used The line irradiation area (ie light field) simulates the irradiation area (ie radiation field) of the radiation beam to verify the consistency of the theoretical radiation field and the actual irradiation field.

However, although the light field lamp assembly of the light field indicator in the related art can meet the standard requirements, its light intensity (ie, illuminance) and contrast are still relatively small, which affects the accuracy of radiation field verification.

Summary of the invention

The object of the present invention is to provide a light field lamp assembly, a light field indicator and a radiotherapy device, which are used to improve the accuracy of radiation field verification.

In order to achieve the above objectives, the present invention provides the following technical solutions:

A first aspect of the present invention provides a light field lamp assembly including an optical component; wherein the optical component includes: a light source, and a condenser lens group disposed on one side of the light source, wherein the condenser The optical lens group includes at least two condensing lenses arranged coaxially.

In some embodiments, the condensing lens group includes two coaxially arranged convex lenses, at least one side of each convex lens is a convex surface, and the convex surfaces of the two convex lenses are oppositely arranged.

In some embodiments, the optical component further includes: a diaphragm component disposed on a side of the condenser lens group that is away from the light source; the diaphragm component includes a through-hole The light passing through the condensing lens group is irradiated to the outside of the light field lamp assembly through the through hole.

In some embodiments, the through hole is a fixed size through hole or an adjustable size through hole.

In some embodiments, a light diffusing member, the light diffusing member is disposed between the diaphragm member and the condenser lens group.

In some embodiments, the light homogenizing member includes frosted glass.

In some embodiments, the light field lamp assembly further includes a fixing component for accommodating the optical component.

In some embodiments, a light source accommodating cavity for accommodating the light source and a light channel communicating with the light source accommodating cavity are provided inside the fixing member; the light source is disposed in the light source accommodating cavity, the The condenser lens group is arranged in the light channel.

In some embodiments, the fixing component includes: a first fixing portion, a second fixing portion, and a third fixing portion connected in sequence; wherein the light source accommodating cavity is provided in the first fixing portion, the first A side wall of a fixing portion is provided with a first opening communicating with the light source accommodating cavity; a first sub-channel communicating with the first opening is provided in the second fixing portion, and a third opening is provided in the third fixing portion A second sub-channel in communication with the first sub-channel, the first sub-channel and the second sub-channel being coaxially arranged to form at least a part of the light channel.

In some embodiments, the condensing lens group includes: a first condensing lens mounted on an end of the first opening and/or the first sub-channel close to the first opening; An end of the first sub-channel close to the second sub-channel and/or a second condenser lens close to an end of the second sub-channel close to the first sub-channel.

In some embodiments, one side of the light source accommodating cavity is provided with a light source mounting port; the light field lamp assembly further includes: a light source base covered on the light source mounting port, and a side connected to the light source base A handle, the light source is installed on the other side of the light source base, and is disposed inside the light source accommodating cavity through the light source installation port.

In some embodiments, the light field lamp assembly further includes: an adjustment member provided on the fixing member, and the adjustment member is used to adjust a light irradiation position of the optical member.

In some embodiments, the light field lamp assembly further includes: a heat dissipation component for dissipating heat from the light field lamp assembly.

In some embodiments, the heat dissipation component includes a heat dissipation fan.

Compared with the related art, the light field lamp assembly provided by the present invention, by providing a condensing lens group on one side of the light source, can cause the light from the light source to converge through the condensing lens group and radiate to the outside of the light field lamp assembly; The optical lens group includes at least two coaxially arranged condenser lenses, which can make the condenser lens group have better light converging ability. In this way, the light field indicator can generate a light field with high illuminance and contrast, thereby improving the accuracy of radiation field verification.

A second aspect of the present invention provides a light field indicator including: a reflector, and the light field lamp assembly described above, and the light emitted by the light field lamp assembly is reflected by the reflector and irradiated to the device Positioning to form a light irradiation area.

The beneficial effects of the light field indicator provided by the present invention are the same as those of the light field lamp assembly described above, and will not be repeated here.

A third aspect of the present invention provides a radiotherapy apparatus including a medical accelerator and a light field indicator as described above.

The beneficial effects of the radiotherapy device provided by the present invention are the same as the beneficial effects of the above-mentioned light field indicator, which will not be repeated here.

BRIEF DESCRIPTION

The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation on the present invention. In the drawings:

1 is a perspective schematic view of a light field lamp assembly in some embodiments of the invention;

2 is a schematic side view of a light field lamp assembly in some embodiments of the invention;

3 is a schematic cross-sectional view of FIG. 2 along the A-A direction;

4 is an exploded schematic view of a light field lamp assembly in some embodiments of the invention;

5 is a schematic side view of a fixing component in a light field lamp assembly in some embodiments of the present invention;

6 is a perspective schematic view of a light field lamp assembly in other embodiments of the present invention;

7 is a schematic structural diagram of a radiotherapy apparatus in some embodiments of the present invention.

Reference mark:

100-light field lamp assembly, 110-light source, 120-condensing lens group, 121-first condensing lens, 122-second condensing lens, 130-aperture part, 140-uniform light part, 150-fixing part, 150a-light source accommodating cavity, 150b-light channel, 151-first fixing part, 151a-first opening, 152-second fixing part, 152a-first sub-channel, 153-third fixing part, 153a-second sub Channel, 160-light source base, 170-handle, 180-adjustment part, 190-heat dissipation part, 200-reflector.

detailed description

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a light field lamp assembly 100. Please refer to FIGS. 1 to 4, the light field lamp assembly 100 includes optical components, wherein the optical components include: a light source 110, and a condenser lens disposed on one side of the light source 110 Group 120, wherein the condenser lens group 120 includes at least two coaxially arranged condenser lenses.

In specific implementation, the light field lamp assembly 100 is provided in the light field indicator of the radiotherapy device, and the number of the condenser lenses in the condenser lens group 120 may be two, such as the first condenser lens 121 and the second condenser lens 122, It can also be multiple; the condensing lens can be a spherical lens or a condensing lens of other structures, for example, even-order aspherical surface, which is not limited here, as long as it can achieve the condensing effect; light from the light source 110 After condensing through the condensing lens group 120, it is irradiated to the outside of the light field lamp assembly 100.

In the light field lamp assembly 100 provided by the embodiment of the present invention, by setting the condenser lens group 120 on one side of the light source 110, the light from the light source 110 can be condensed through the condenser lens group 120 and irradiated to the outside of the light field lamp assembly 100 ; By making the condenser lens group 120 include at least two coaxially arranged condenser lenses, the condenser lens group 120 can have a better light gathering ability. In this way, the light field indicator can generate a light field with high illuminance and contrast, thereby improving the accuracy of radiation field verification.

In order to facilitate the condensing lens group 120 to have better light gathering ability, please refer to FIG. 3 and FIG. 4, optionally, in some embodiments of the present invention, the condensing lens group 120 includes two coaxially arranged convex lenses At least one side of each convex lens is a convex surface, and the convex surfaces of the two convex lenses are oppositely arranged. In specific implementation, the convex lens may be a plano-convex lens, a positive meniscus lens, a biconvex lens, or the like. Exemplarily, as shown in FIG. 3, the first condensing lens 121 and the second condensing lens 122 are plano-convex lenses arranged coaxially, and the convex surfaces are arranged oppositely.

Optionally, in some embodiments of the present invention, the optical component further includes: a diaphragm component 130 disposed on a side of the condenser lens group 120 away from the light source 110; the diaphragm component 130 includes light Through the light hole, the light passing through the condenser lens group 120 is irradiated to the outside of the light field lamp assembly 100. In the embodiment of the present invention, by providing the diaphragm member 130, a high-contrast light field can be formed in the light field region, thereby increasing the visibility of the light field.

In a specific implementation, the light-through hole may be a fixed-size light-through hole or an adjustable-size light-through hole; wherein, by making the light-through hole a fixed-size light-through hole, it helps to simplify the diaphragm member 130 By making the light-through hole an adjustable-size light-through hole, it is convenient for the diaphragm member 130 to have different light adjustment capabilities according to actual needs.

In the embodiment of the present invention, when the through hole is a fixed size through hole, optionally, the diaphragm member 130 includes: a light blocking plate, the through hole is opened on the light blocking plate, of course, it may be a plurality of blocking The light plates together form a fixed-size light hole; when the light hole is an adjustable-size light hole, optionally, the diaphragm component 130 includes: a plurality of light blocking plates, the plurality of light blocking plates are partially overlapped in turn, surrounding A through hole is formed, wherein the overlapping area of the plurality of light blocking plates is adjustable, and the aperture diameter of the through hole is adjusted by adjusting the overlapping area of the multiple light blocking plates.

Please refer to Fig. 3 and Fig. 4, in order to improve the uniformity of the outgoing light, to avoid the light field indicator into a light field with uneven brightness. Optionally, in the embodiment of the present invention, the optical component further includes: a uniform light component 140, and the uniform light component 140 is disposed between the diaphragm component 130 and the condenser lens group 120. During specific implementation, optionally, the light uniformity component 140 may include frosted glass, or may also include a light-transmitting film of other matte structure.

Please refer to FIGS. 3 and 5. In order to support and fix the optical components, optionally, in some embodiments of the present invention, the light field lamp assembly 100 further includes a fixing component 150, which is used to accommodate the optical components. During specific implementation, optionally, a light source accommodating cavity 150a for accommodating the light source 110 and a light channel 150b communicating with the light source accommodating cavity 150a are provided inside the fixing member 150; the light source 110 is disposed in the light source accommodating cavity 150a, and a condenser lens The group 120 is provided in the light channel 150b. In the embodiment of the present invention, by providing the light source accommodating cavity 150a and the light channel 150b in the fixing member 150, the degree of divergence of light can be effectively reduced, so that the light of the light field lamp assembly 100 is irradiated in a desired direction.

In order to facilitate the installation of the light field lamp assembly 100, optionally, as shown in FIGS. 3 to 5, the light source 110 fixing member 150 includes: a first fixing portion 151, a second fixing portion 152, and a third fixing portion 153 connected in sequence ; Among them, the light source accommodating cavity 150a is provided in the first fixing portion 151, the side wall of the first fixing portion 151 is provided with a first opening 151a communicating with the light source accommodating cavity 150a; the second fixing portion 152 is provided with a first opening The first sub-channel 152a communicating with the 151a, the third fixing portion 153 is provided with a second sub-channel 153a communicating with the first sub-channel 152a, the first sub-channel 152a and the second sub-channel 153a are arranged coaxially, forming a light channel 150b At least part of it.

It should be noted here that the diaphragm member 130 may be provided in the third fixing portion 153, and the third fixing portion 153 may also serve as the diaphragm member 130 by itself. For example, as shown in FIG. 3, the third fixing portion 153 has a fixing The entire size of the light transmission hole serves as the diaphragm member 130.

Optionally, in some embodiments of the present invention, as shown in FIG. 3, the condenser lens group 120 includes: a first condenser lens 121 and a second condenser lens 122; wherein, the first condenser lens 121 is clamped At the end of the first opening 151a and/or the first sub-channel 152a near the first opening 151a, the second condenser lens 122 is clamped at the end of the first sub-channel 152a near the second sub-channel 153a and/or the first The end of the two sub-channels 153a near the first sub-channel 152a; in this way, the installation of the condenser lens group 120 can be facilitated. Moreover, in order to better ensure the installation stability of the first condenser lens 121 and the second condenser lens 122, optionally, in this embodiment, the light field lamp assembly 100 further includes a first condenser lens 121 for fixing And/or the snap ring of the second condenser lens 122, the first condenser lens 121 and/or the second condenser lens 122 are installed at corresponding locations through the snap ring.

Referring to FIG. 3, in order to facilitate the installation and removal of the light source 110, optionally, in some embodiments of the present invention, a side of the light source accommodating cavity 150a is provided with a light source installation port; the light field lamp assembly 100 further includes: a cover is provided on the light source The light source base 160 of the mounting port and the handle 170 connected to one side of the light source base 160, the light source 110 is mounted on the other side of the light source base 160, and is disposed inside the light source receiving cavity 150a through the light source mounting port. During specific implementation, optionally, the fixing member 150 is provided with a limiting piece for clamping the light source base 160 near the light source mounting opening, so as to prevent the light source base 160 from falling off from the fixing part; when the limiting piece is removed The light source base 160 can be separated from the fixing member 150.

In order to effectively ensure that the light field generated by the light field indicator coincides with the actual light field of the radiation source, please refer to FIG. 6. In some embodiments of the present invention, optionally, the light field lamp assembly further includes: an adjustment component provided on the fixed component 150 180. The adjusting component 180 is used to adjust the light irradiation position of the optical component.

Please refer to FIG. 6. In order to prevent the light field lamp assembly 100 from being damaged due to overheating, optionally, in some embodiments of the present invention, the light field lamp assembly 100 further includes a heat dissipation component 190 for dissipating heat from the light field lamp assembly 100. In specific implementation, the heat dissipation member 190 is disposed at a position opposite to the position of the light source 110 in the fixing member 150 to dissipate heat from the light source 110. Further, the heat dissipation component 190 may include a heat dissipation fan.

An embodiment of the present invention also provides a light field indicator, please refer to FIG. 7, the light field indicator includes a reflector 200, and the light field lamp assembly 100 as described above, wherein the light emitted by the light field lamp assembly 100 passes through the reflector 200 After being reflected, it is irradiated to a set position (such as the surface of the human body) to form a light irradiation area, and the light field formed by the light can indicate the radiation field formed by the radiation beam.

It should be noted that the beneficial effects of the light field indicator provided by the embodiment of the present invention are the same as the beneficial effects of the light field lamp group described above, which will not be repeated here.

An embodiment of the present invention also provides a radiotherapy device. Please continue to refer to FIG. 1. The radiotherapy device includes: a medical accelerator, and a light field indicator as described above. In specific implementation, the light field of the light field indicator is used to indicate the radiation field of the radiation beam in the medical accelerator.

It should be noted that the beneficial effects of the radiotherapy device provided by the embodiments of the present invention are the same as the beneficial effects of the above-mentioned light field indicator, which will not be repeated here.

The above are only the specific embodiments of the present invention, but the scope of protection of the present invention is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present invention. It should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

A light field lamp assembly, characterized by comprising: an optical component, the optical component comprising: a light source, and a condenser lens group disposed on one side of the light source, wherein the condenser lens group includes at least two Condenser lens set on the axis.
The light field lamp assembly according to claim 1, wherein the condensing lens group comprises: two coaxially arranged convex lenses, at least one side of each convex lens is convex, and two convex surfaces of the convex lenses Relative settings.
The light field lamp assembly according to claim 1, wherein the optical component further comprises: a diaphragm component, the diaphragm component is disposed on a side of the condenser lens group away from the light source; The diaphragm part includes a through hole through which light rays passing through the condenser lens group are irradiated to the outside of the light field lamp assembly.
The light field lamp assembly according to claim 3, wherein the light hole is a light hole of a fixed size or a light hole of an adjustable size.
The light field lamp assembly according to claim 3, wherein the optical component further comprises: a uniform light component, the uniform light component is disposed between the diaphragm component and the condenser lens group.
The light field lamp assembly according to claim 5, wherein the light diffusing member includes frosted glass.
The light field lamp assembly according to claim 1, wherein the light field lamp assembly further comprises a fixing member for accommodating the optical member.
The light field lamp assembly according to claim 7, wherein a light source accommodating cavity for accommodating the light source and a light channel communicating with the light source accommodating cavity are provided inside the fixing member;

The light source is arranged in the light source accommodating cavity, and the condenser lens group is arranged in the light channel.
The light field lamp assembly according to claim 8, wherein the fixing member comprises: a first fixing portion, a second fixing portion, and a third fixing portion connected in sequence; wherein,

The light source accommodating cavity is provided in the first fixing portion, and a side wall of the first fixing portion is provided with a first opening communicating with the light source accommodating cavity;

A first sub-channel communicating with the first opening is provided in the second fixing portion, a second sub-channel communicating with the first sub-channel is provided in the third fixing portion, the first sub-channel is The second sub-channel is arranged coaxially, forming at least a part of the light channel.
The light field lamp assembly according to claim 9, wherein the condenser lens group comprises:

A first condenser lens mounted on an end of the first opening and/or the first sub-channel close to the first opening;

A second condensing lens mounted on an end of the first sub-channel close to the second sub-channel and/or an end of the second sub-channel close to the first sub-channel.
The light field lamp assembly according to claim 8, wherein a light source mounting port is opened on one side of the light source receiving cavity;

The light field lamp assembly further includes a light source base covered on the light source mounting port, and a handle connected to one side of the light source base, the light source is installed on the other side of the light source base, and passes the The light source mounting port is provided inside the light source receiving cavity.
The light field lamp assembly according to claim 7, wherein the light field lamp assembly further comprises: an adjusting member provided on the fixing member, the adjusting member is used to adjust the light irradiation of the optical member position.
The light field lamp assembly according to claim 1, wherein the light field lamp assembly further comprises: a heat dissipation component for dissipating heat from the light field lamp assembly.
The light field lamp assembly according to claim 13, wherein the heat dissipation component includes a heat dissipation fan.
A light field indicator, including a reflector, characterized in that the light field indicator further comprises a light field lamp assembly according to any one of claims 1 to 14, and light emitted by the light field lamp assembly passes through the reflector After reflection, the light is irradiated to the set position to form a light irradiation area.
A radiotherapy apparatus, including a medical accelerator, characterized in that the radiotherapy apparatus further includes a light field indicator according to claim 15.