Collimating architecture and oral cavity scanner

Abstract

A collimating architecture and an oral cavity scanner. The collimating architecture comprises a first light-emitting element (100), a second light-emitting element (200), a first collimating element (300), a second collimating element (400), a first beam splitter (500), and a second beam splitter (600). The first light-emitting element (100) is suitable for providing first light (110) and second light (120), the second light-emitting element (200) is suitable for providing third light (210), the first collimating element (300) is disposed on a light-emitting side of the first light-emitting element (100) for acquiring the first light (110) and acquiring the second light (120), and the second collimating element (400) is disposed on a light-emitting side of the second light-emitting element (200) for acquiring the third light (210); the second beam splitter (600) is arranged above the first beam splitter (500), and the first beam splitter (500) and the second beam splitter (600) are arranged spaced apart on the light-emitting side of the first collimating element (300) and the second collimating element (400). The collimating architecture has the characteristics of a short optical path and a small space occupation, which can remarkably shorten the length of the oral cavity scanner and facilitate the space planning.

Description

Collimation structure and oral scanner Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a collimation structure and an oral scanner. Background Art

[0002] With the continuous development of society and the continuous innovation of technology, more and more types of electronic medical devices are being applied to the market, bringing convenience to patients' diagnosis and treatment.

[0003] Oral scanners are a crucial tool for obtaining oral impressions. They scan the teeth within the mouth, analyze the data, and create an oral impression, providing the patient with a suitable dental mold. By comparing multiple dental molds, doctors can assess treatment outcomes and provide a basis for further diagnosis and treatment. Therefore, oral impressions are a crucial source of information for doctors seeking to obtain information about their patients' oral cavity.

[0004] For some oral scanners, the collimation structure is a crucial component, required for color mixing and alignment. However, oral scanners require deep access to the patient's oral cavity for scanning, placing high demands on size. Existing collimation structures for oral scanners have two types: one uses two parallel, spaced beamsplitters. This large spacing between the beamsplitters results in a long optical path, making the scanner oversized. Another uses two beamsplitters bonded together in an X-shape. While this shortens the optical path, it also significantly reduces optical path efficiency, negatively impacting imaging quality.

[0005] Therefore, how to reduce the size of the oral scanner without adversely affecting the light efficiency has always been a technical problem that needs to be solved urgently by those skilled in the art.

[0006] Utility Model Content

[0007] The purpose of the present utility model is to provide a collimation structure and an oral scanner, in which a first light is transmitted to a first beam splitter and then reflected, a second light is transmitted through the first beam splitter and then reflected to pass out from the second beam splitter, and a third light is transmitted through the second beam splitter and the first beam splitter to pass out, thereby reducing the optical path of the LED lamp, reducing the space occupied, reducing the size of the oral scanner, facilitating use by medical staff, and improving the efficiency of the optical path.

[0008] The technical solutions provided by this utility model are as follows:

[0009] A collimating structure, comprising a first light emitting element, a second light emitting element, a first collimating element, a second collimating element, a first beam splitter and a second beam splitter;

[0010] The first light emitting element is adapted to provide a first light and a second light, and the second light emitting element is adapted to provide a third light;

[0011] The first collimating element is provided on the light-emitting side of the first light-emitting element, and is used to collect the first light and the second light; the second collimating element is provided on the light-emitting side of the second light-emitting element, and is used to collect the third light;

[0012] The second beam splitter is arranged above the first beam splitter, and the first beam splitter and the second beam splitter are separately arranged on the light exit sides of the first collimating element and the second collimating element;

[0013] Among them, when the first light emitting element provides the first light and the second light, and the second light emitting element provides the third light, the first light is reflected after propagating to the first beam splitter, the second light passes through the first beam splitter and propagates to the second beam splitter and is reflected, and passes through the first beam splitter, and the third light passes through the second beam splitter and the first beam splitter to pass through.

[0014] In some embodiments, a light uniforming member is further included, and the light uniforming member is disposed on the light-emitting side of the first beam splitter to uniformly receive light.

[0015] In some embodiments, the angle between the first beam splitter and the second beam splitter is in the range of 30°-60°.

[0016] In some embodiments, the first light, the second light, and the third light have different colors.

[0017] In some embodiments, the color of the first light is blue, the color of the second light is yellow, and the color of the third light is purple;

[0018] or

[0019] The color of the first light is blue, the color of the second light is red, and the color of the third light is green.

[0020] In some embodiments, the surfaces of the first beam splitter and the second beam splitter are provided with coatings of different colors, so that the first beam splitter reflects the first light and the second beam splitter reflects the second light.

[0021] In some embodiments, the first light emitting member is provided with a first lamp bead and a second lamp bead, the second light emitting member is provided with a third lamp bead, and the first light emitting member and the second light emitting member both have an on state and a off state;

[0022] Among them, when the first lamp bead, the second lamp bead and the third lamp bead are all in the on state, they are used to emit the first light, the second light and the third light respectively. When they are in the off state, the first lamp bead does not emit the first light, the second lamp bead does not emit the second light, and the third lamp bead does not emit the third light.

[0023] In some embodiments, the system further includes a third beam splitter, the third beam splitter being disposed above the second beam splitter and located on the light-emitting side of the first collimating element and the second collimating element;

[0024] The first light emitting element is further provided with a fourth lamp bead, and the fourth lamp bead is further capable of emitting a fourth light;

[0025] The third lamp bead is in an off state, the first lamp bead, the second lamp bead and the fourth lamp bead are all in an on state, and the fourth light passes through the first beam splitter and the second beam splitter and is reflected by the third beam splitter.

[0026] In some embodiments, the system further includes a fourth beam splitter, the fourth beam splitter being disposed above the second beam splitter and located on the light-emitting side of the first collimating element and the second collimating element;

[0027] The first light emitting element is further provided with a fifth lamp bead, and the fifth lamp bead can also emit a fifth light;

[0028] The first lamp bead, the second lamp bead, the third lamp bead and the fifth lamp bead are all in the on state, the fifth light passes through the first beam splitter and the second beam splitter, propagates to the third beam splitter and is reflected, and the third light passes through the fourth beam splitter, the second beam splitter and the first beam splitter and then exits.

[0029] An oral scanner comprising a collimation structure according to any one of the above claims.

[0030] The collimation structure and oral scanner provided by the present invention have the following beneficial effects:

[0031] 1. The utility model provides a collimation structure and an oral scanner, wherein the collimation structure is provided with a first light emitting element, a second light emitting element, a first collimating element, a second collimating element, a first beam splitter and a second beam splitter, and the light emitting sides of the first light emitting element and the second light emitting element are respectively provided with a first beam splitter and a second beam splitter, so that the first light generated by the first light emitting element is irradiated on the first beam splitter and reflected, the second light generated by the first light emitting element is reflected at the second beam splitter after passing through the first beam splitter and passes out from the first beam splitter, and the third light generated by the second light emitting element passes through the first beam splitter and the second beam splitter, and then the first light, the second light and the third light propagate in the same direction to form white light, shortening the light path, occupying less space, reducing the size of the oral scanner, facilitating subsequent space planning of the oral scanner, and facilitating operation and use by medical staff.

[0032] 2. The present invention provides a collimation structure and an oral scanner, wherein two lamp beads are provided on the first light emitting component, which can emit a first light and a second light, thereby reducing the number of light emitting components and further reducing the space occupied by the collimation structure, thereby further reducing the size of the oral scanner and facilitating operation by medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of this solution.

[0034] FIG1 is a structural diagram of a collimation structure provided by the present invention.

[0035] Description of Figure Numbers:

[0036] First light output element 100 , first light 110 , second light 120 , second light output element 200 , third light 210 , first collimating element 300 , second collimating element 400 , first beam splitter 500 , second beam splitter 600 . DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0038] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0039] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0040] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0041] In one embodiment, referring to FIG1 of the accompanying drawings of the specification, a collimating structure is described, which is achieved by arranging a first light emitting member 100 and a second light emitting member 200 in the collimating structure, wherein the first light emitting member 100 is suitable for emitting a first light 110 and a second light 120, and the second light emitting member 200 is suitable for emitting a third light 210. The first light 110 and the second light 120 pass through the first collimating member 300 in sequence, and then pass through the first beam splitter 500 and the second beam splitter 600 and propagate in the same direction as the third light 210 passing through the first beam splitter 500 and the second beam splitter 600. The light path is short and the space occupied is small.

[0042] Specifically, referring to Figure 1 of the accompanying drawings, a collimating structure includes a first light emitting element 100, a second light emitting element 200, a first collimating element 300, a second collimating element 400, a first beam splitter 500, and a second beam splitter 600. The second beam splitter 600 is disposed above the first beam splitter 500. It is worth noting that light of the same color as the first beam splitter 500 will be reflected when it propagates to the first beam splitter 500, while light of a different color from the first beam splitter 500 will pass through the first beam splitter 500 when it propagates to the first beam splitter 500. When light propagates to the second beam splitter 600, it will either directly pass through the second beam splitter 600 or be reflected from the second beam splitter 600.

[0043] Accordingly, the first light emitting element 100 can provide a first light 110 and a second light 120, and the second light emitting element 200 can provide a third light 210. Furthermore, the first collimator 300 is disposed on the light-emitting side of the first light emitting element 100, and the second collimator 400 is disposed on the light-emitting side of the second light emitting element 200. The side from which light exits through the first light emitting element 100 or the second light emitting element 200 is referred to as the light-emitting side. Clearly, the first collimator 300 and the second collimator 400 function to gather light. Therefore, when the first light 110 passes through the first collimator 300, the first collimator 300 collects the first light 110, converging the first light 110 and improving the luminosity. Obviously, the second light 120 passes through the first collimator 300, which collects the second light 120, and the third light 210 passes through the second collimator 400, which collects the third light 210. Both the second light 120 and the third light 210 are subjected to the effects of concentration and brightness enhancement.

[0044] Furthermore, the first beam splitter 500 and the second beam splitter 600 are separately disposed on the light-emitting sides of the first collimating element 300 and the second collimating element 400 .

[0045] In this embodiment, referring to FIG. 1 of the accompanying drawings, when the first light emitting element 100 emits a first light 110 and a second light 120, and the second light emitting element 200 emits a third light 210, the first light 110 emitted by the first light emitting element 100 passes through the first collimating element 300 and then propagates to the first beam splitter 500. After being reflected by the first beam splitter 500, the first light 110 continues to propagate. The second light 120 emitted by the first light emitting element 100 passes through the first collimating element 300 and then the first beam splitter 500. After being reflected by the first beam splitter 500, the second light 120 is reflected by the second collimating element 400, then exits the first beam splitter 500 and continues to propagate. The third light 210 emitted by the second light emitting element 200 continues to propagate after passing through the second beam splitter 600 and the first beam splitter 500. Finally, the first light 110, the second light 120, and the third light 210 propagate in the same direction, forming white light.

[0046] Thus, compared to the prior art, where two beam splitters are parallel and spaced apart, the collimating structure of the present invention shortens the optical path of the light. The two beam splitters are bonded together in an X-shape. The two beam splitters of the present invention do not need to be bonded together, thus avoiding the adverse effects of bonding on the optical path efficiency. The size of the collimating structure of the present invention is reduced, and the optical path efficiency is improved.

[0047] It is understood that the first light emitting element 100 is adapted to emit the first light 110 and the second light 120. The first light emitting element 100 may emit one of the first light 110 and the second light 120, or may emit both the first light 110 and the second light 120, or may choose not to emit the first light 110 and the second light 120. Correspondingly, the second light emitting element 200 is adapted to emit the third light 210, and the second light emitting element 200 may or may not emit the third light 210.

[0048] In one embodiment, referring to FIG. 1 of the accompanying drawings, the colors of the first light 110 , the second light 120 , and the third light 210 are different.

[0049] Specifically, when the collimated architecture application scenario requires the use of white light, the first light 110 , the second light 120 , and the third light 210 may be any one of red, green, and blue, respectively.

[0050] Correspondingly, the first beam splitter 500 is arranged close to the first collimating member 300, and the second beam splitter 600 is arranged close to the second collimating member 400, and different colors of coatings are provided on the first beam splitter 500 and the second beam splitter 600. The coating on the first beam splitter 500 is the same as the color of the first light 110, and the coating on the second beam splitter 600 is the same as the color of the second light 120. The colors of the coating on the first beam splitter 500 and the coating on the second beam splitter 600 are both different from the color of the third light 210.

[0051] Furthermore, the first light emitting element 100 and the second light emitting element 200 are LED light sources. Two lamp beads are provided on the first light emitting element 100, namely a first lamp bead and a second lamp bead, which are respectively used to emit a first light 110 and a second light 120. A third lamp bead is provided on the second light emitting element 200, and the third lamp bead is suitable for emitting a third light 210. Moreover, the first light emitting element and the second light emitting element 200 both have an on state and an off state. Specifically, when the first lamp bead, the second lamp bead, and the third lamp bead are all in the on state, they are used to emit the first light 110, the second light 120, and the third light 210, respectively. When in the off state, the first lamp bead does not emit the first light 110, the second lamp bead does not emit the second light 120, and the third lamp bead does not emit the third light 210.

[0052] Specifically, when both the first light emitting element 100 and the second light emitting element 200 are in the on state, referring to FIG1 of the accompanying drawings, for ease of explanation, it is assumed that the first light emitting element 100 emits a blue first light 110 and a red second light 120, and the second light emitting element 200 emits a green third light 210. Accordingly, the coating color on the first beam splitter 500 is blue, and the coating color on the second beam splitter 600 is red. Therefore, after the first light 110 is emitted from the first light emitting element 100 and is focused by the first collimating element 300, because the first light 110 and the coating color of the first beam splitter 500 are the same, both blue, the first light 110 propagates to the first beam splitter 500 and is reflected there. After emitting from the first light emitting element 100, the second light 120 is focused by the first collimating element 300 and then propagates to the first beam splitter 500. Since the color of the first beam splitter 500 is different from that of the second light 120, the second light 120 passes directly through the first beam splitter 500 and propagates to the second beam splitter 600. Since the color of the coating on the second beam splitter 600 is the same as the color of the second light 120, both are red, the second light 120 is reflected by the second beam splitter 600 and then exits the first beam splitter 500. After emitting from the second light emitting element 200, the third light 210 is focused by the second collimating element 400. Since the colors of the first and second beam splitters 500 and 600 are different from those of the third light 210, the third light 210 passes through the second beam splitter 600 and the first beam splitter 500 in sequence before exiting. The first light 110, the second light 120, and the third light 210 then mix to form white light.

[0053] It is worth noting that the color combinations of the first light 110, the second light 120, the third light 210, the first beam splitter 500, and the second beam splitter 600 are various and not limited to the color combinations described above. For example, the first light 110 is red, the second light 120 is green, and the third light 210 is blue. The first beam splitter 500 is coated with red, and the second beam splitter 600 is coated with green. The third light 210 can also sequentially pass through the second beam splitter 600 and the first beam splitter 500. The first light 110 is reflected by the first beam splitter 500 and continues to propagate. The second light 120, after passing through the first beam splitter 500, is reflected by the second beam splitter 600, then reflected by the third beam splitter, and then passes through the second beam splitter 600 and the first beam splitter 500 again before being emitted. Then, the first light 110, the second light 120, and the fourth light are mixed to generate white light.

[0054] In one embodiment, the collimating structure provided in this embodiment further includes a fourth beam splitter, which is disposed above the second beam splitter 600 and located on the light-emitting side of the first collimating element 300 and the second collimating element 400. The first light emitting element 100 is further provided with a fifth lamp bead capable of emitting a fifth light beam. That is, in this embodiment, the collimating structure includes the first beam splitter 500, the second beam splitter 600, the fourth beam splitter, the first light emitting element 100, and the second light emitting element 200. The first light emitting element 100 includes a first lamp bead, a second lamp bead, and a fifth lamp bead, and the second light emitting element 200 includes a third lamp bead.

[0055] Specifically, the first lamp bead, the second lamp bead, the third lamp bead and the fifth lamp bead are all in the on state. For the convenience of explanation, the first light 110 is set to blue, the second light 120 is set to red, the fifth light is set to green, and the third light 210 is set to purple. The coating color on the first beam splitter 500 is blue, the coating color on the second beam splitter 600 is red, and the coating color on the fourth beam splitter is green. The first light 110 propagates to the first beam splitter 500 and is reflected on the first beam splitter 500. The second light 120 passes directly from the first beam splitter 500 and propagates to the second beam splitter 600. The fifth light passes through the first beam splitter 500 and the second beam splitter 600 in sequence, and then reflects on the fourth beam splitter. It passes through the second beam splitter 600 and the first beam splitter 500 again and is emitted. The third light 210 passes through the fourth beam splitter, the second beam splitter 600 and the first beam splitter 500 and is emitted. The first light 110, the second light 120 and the fifth light are mixed to form white light, and the third light 210 is not mixed. The purple light can illuminate the caries, and the caries can emit fluorescence, which is convenient for medical workers to diagnose patients.

[0056] In one embodiment, referring to FIG1 of the accompanying drawings of the specification, the angle between the first beam splitter 500 and the second beam splitter 600 is 30° to 60°, and the first beam splitter 500 and the second beam splitter 600 are both square flat prisms. It is worth noting that the first beam splitter 500 and the second beam splitter 600 are both wedge-shaped prisms. In actual production applications, the first beam splitter 500 and the second beam splitter 600 are not limited to square flat prisms or wedge-shaped prisms, but can also be other forms, which are not described in detail here. After being reflected by the present invention, they pass through the first beam splitter 500, and finally the first light 110, the second light 120 and the third light 210 mix with each other to form white light. There are other color combinations, which are not described in detail here, and are all within the scope of protection of the present invention.

[0057] It is understandable that in actual production applications, the application scenarios of the collimated architecture may also require light of other colors in addition to white light. Thus, the colors of the first light 110, the second light 120, and the third light 210 are not limited to the three primary colors, but may also be lights of other colors to meet different application scenarios.

[0058] Specifically, the color of the first light 110 is blue, the color of the second light 120 is yellow, and the color of the third light 210 is purple. Accordingly, the color of the coating on the first beam splitter 500 is blue, and the color of the second beam splitter 600 is yellow. The third light 210 can also pass through the second beam splitter 600 and the first beam splitter 500 in sequence. The first light 110 is reflected by the first beam splitter 500 and continues to propagate. The second light 120 passes through the first beam splitter 500, reflects on the second beam splitter 600, and then exits the first beam splitter 500. The first light 110 and the second light 120 are mixed to form white light. The third light 210 does not mix. The purple light can illuminate the caries, causing the caries to emit fluorescence, facilitating medical diagnosis.

[0059] In one embodiment, the collimating structure further includes a third beam splitter, which is disposed above the second beam splitter 600 and located on the light-emitting side of the first and second collimating elements 300 and 400. Accordingly, the first light-emitting element 100 is further provided with a fourth lamp bead, which is adapted to emit a fourth light beam. In this embodiment, the third lamp bead is in an off state and does not emit the third light beam 210. The first, second, and fourth lamp beads are all in an on state, emitting the first light beam 110, the second light beam 120, and the fourth light beam, respectively.

[0060] For the sake of convenience, the first light 110 is blue, the second light 120 is red, the fourth light is green, the coating color on the first beam splitter 500 is blue, the coating color on the second beam splitter 600 is red, and the coating color on the third beam splitter is green. The first light 110 propagates to the first beam splitter 500 and is reflected on the first beam splitter 500. The second light 120 passes directly from the first beam splitter 500 and propagates to the second beam splitter 600. The fourth light passes through the first beam splitter 500 and the second beam splitter in sequence.

[0061] In one embodiment, the present embodiment further describes the collimating structure. Specifically, the collimating structure further includes a light homogenizer, which is disposed on the light-emitting side of the first beam splitter 500 to uniformly distribute the received light.

[0062] In one embodiment, this embodiment provides an oral scanner, comprising a collimation structure provided by any of the above embodiments.

[0063] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention, and such improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. A collimation structure, characterized in that: It includes a first light emitting element, a second light emitting element, a first collimating element, a second collimating element, a first beam splitter and a second beam splitter; The first light emitting member is adapted to provide a first light and a second light, and the second light emitting member is adapted to provide a third light; The first collimating member is arranged at the light-emitting side of the first light-emitting member, and is used to collect the first light and the second light; the second collimating member is arranged at the light-emitting side of the second light-emitting member, and is used to collect the third light; The second beam splitter is arranged above the first beam splitter, and the first beam splitter and the second beam splitter are arranged separately from each other on the light exiting sides of the first collimating element and the second collimating element; Among them, when the first light emitting component provides the first light and the second light, and the second light emitting component provides the third light, the first light is reflected after propagating to the first beam splitter, the second light passes through the first beam splitter and propagates to the second beam splitter and then is reflected and passes through the first beam splitter, and the third light passes through the second beam splitter and the first beam splitter to pass through.

2. The collimation structure according to claim 1, characterized in that: It also includes a light homogenizer, which is arranged on the light-emitting side of the first beam splitter to make the received light uniform.

3. The collimation structure according to claim 2, characterized in that: The included angle between the first beam splitter and the second beam splitter is in the range of 30°-60°.

4. A collimation structure according to any one of claims 1 to 3, characterized in that: The first light, the second light and the third light have different colors.

5. The collimation structure according to claim 4, characterized in that: The color of the first light is blue, the color of the second light is yellow, and the color of the third light is purple; or The color of the first light is blue, the color of the second light is red, and the color of the third light is green.

6. The collimation structure according to claim 4, characterized in that: The surfaces of the first beam splitter and the second beam splitter are provided with coatings of different colors, so that the first beam splitter reflects the first light and the second beam splitter reflects the second light.

7. A collimation structure according to any one of claims 1 to 3, characterized in that: The first light emitting member is provided with a first lamp bead and a second lamp bead, the second light emitting member is provided with a third lamp bead, and the first light emitting member and the second light emitting member both have an on state and a off state; Among them, when the first lamp bead, the second lamp bead and the third lamp bead are all in the on state, they are used to emit the first light, the second light and the third light respectively. When they are in the off state, the first lamp bead does not emit the first light, the second lamp bead does not emit the second light, and the third lamp bead does not emit the third light.

8. The collimation structure according to claim 7, characterized in that: It also includes a third beam splitter, which is arranged above the second beam splitter and located on the light exit side of the first collimating element and the second collimating element; The first light emitting member is further provided with a fourth lamp bead, and the fourth lamp bead can also emit a fourth light; The third lamp bead is in an off state, the first lamp bead, the second lamp bead and the fourth lamp bead are all in an on state, and the fourth light passes through the first beam splitter and the second beam splitter. After propagating to the third beam splitter, the light is reflected.

9. The collimation structure according to claim 7, characterized in that: It also includes a fourth beam splitter, which is arranged above the second beam splitter and located on the light exiting side of the first collimating element and the second collimating element; The first light emitting member is further provided with a fifth lamp bead, and the fifth lamp bead can also emit a fifth light; The first lamp bead, the second lamp bead, the third lamp bead and the fifth lamp bead are all in the on state, the fifth light passes through the first beam splitter and the second beam splitter, propagates to the third beam splitter and then is reflected, the third light passes through the fourth beam splitter, the second beam splitter and the first beam splitter and then passes out.

10. An oral scanner, characterized in that: A collimating structure comprising any one of claims 1-9.

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