A deep ultraviolet condenser light source module and a color sorter using the same

Abstract

The present invention discloses a deep ultraviolet condenser light source module, which includes a housing and an LED lamp installed in the housing. A filter is also provided on the housing. The LED lamp includes a main LED lamp and a side LED lamp located on the same side of the filter, and further includes a reflector. The reflector receives the light emitted by the side LED lamp, and the light reflected by the reflector and the light emitted by the main LED lamp both pass through the filter and intersect outside the housing. Compared with the LED condenser scheme, the new structure combines the optical paths of at least two groups of LED light sources through a reflection and transmission structure, and focuses on one point on the material surface. Under the condition of increasing the volume by 20%, the light source brightness is increased by at least twice. Under the condition that the optical path arrangement in the color sorter is not affected, the lighting conditions required for deep ultraviolet identification are satisfied.

Description

Technical Field

[0001] The present invention relates to the technical field of light source condensing in optoelectronic technology, and particularly relates to a deep ultraviolet condensing light source module and a color sorter using the same. Background Art

[0002] In a color sorter, a light source is required to illuminate materials. As shown in the existing LED light source condensing module Figure 1 , in order to converge the divergence angle of the light source LED and improve the light source brightness, a condensing device is generally added in front of the light source to make the light source brightness more concentrated. In the field of deep ultraviolet applications, the fluorescence information is weaker. Simply adding a condensing rod and changing the convergence angle cannot meet the requirements. As shown in Figure 1 , during use, it is necessary to fix the filter, the condensing rod, and the LED lamp assembly. Due to the limitation of the external profile size, it is impossible to arrange multiple light sources in the limited space of the color sorter chassis. However, when the existing color sorter performs color sorting on minerals, the brightness of the original condensing module is insufficient, and the excited fluorescence is difficult to effectively identify. Moreover, the limitation of the external dimensions and the installation dimensions of the color sorter results in a brightness bottleneck in the actual use of the overall solution. Summary of the Invention

[0003] To solve the technical problems in the background art, the present invention proposes a deep ultraviolet condensing light source module.

[0004] A deep ultraviolet condensing light source module proposed by the present invention includes a housing and an LED lamp installed in the housing. A filter is also provided on the housing. The LED lamp includes a main LED lamp and side LED lamps on the same side of the filter. The module further includes a reflector. The reflector receives the light emitted by the side LED lamps, and the light reflected by the reflector and the light emitted by the main LED lamp both pass through the filter and intersect outside the housing.

[0005] Preferably, a main condensing rod and side condensing rods are also installed in the housing. The main condensing rod is located between the main LED lamp and the reflector, and the side condensing rods are located between the side LED lamps and the reflector.

[0006] Preferably, the side LED lamps include a first side LED lamp and a second side LED lamp, and the first side LED lamp and the second side LED lamp are symmetric with respect to the middle light emitted by the main LED lamp.

[0007] Preferably, the reflector includes a middle support, a first reflector plate, and a second reflector plate. The middle support is fixed inside the housing, and a through hole is formed in the middle support. The light emitted by the main LED lamp passes through the through hole and then passes through the filter. The first reflector plate faces the first side LED lamp, and the second reflector plate faces the second side LED lamp. The first reflector plate and the second reflector plate are symmetric with respect to the central axis of the through hole.

[0008] Preferably, the first reflector plate and the second reflector plate can rotate synchronously relative to the middle support.

[0009] Specifically, in some embodiments, a first shaft with an axis coaxial with the axis of rotation of the first reflector plate relative to the middle support is fixed on the first reflector plate, and a second shaft with an axis coaxial with the axis of rotation of the second reflector plate relative to the middle support is fixed on the second reflector plate. A transmission mechanism is provided between the first shaft and the second shaft. The transmission mechanism drives the first shaft and the second shaft to rotate at the same speed but in opposite directions. The structure is simple, and the first reflector plate and the second reflector plate can be rotated at the same speed but in opposite directions. The transmission mechanism can be a gear transmission mechanism in the prior art, and of course, it can also be other transmission mechanisms that can achieve the same speed but opposite directions of rotation of the two shafts.

[0010] Specifically, in some embodiments, the bottom of the first reflector plate is horizontally rotatably mounted on the middle support, and the bottom of the second reflector plate is horizontally rotatably mounted on the middle support. Vertical sliding rods are vertically slidably mounted on both sides of the first reflector plate and the second reflector plate. The top of the vertical sliding rod can slide relative to the middle support. An active clamping member is provided on the vertical sliding rod, and the active clamping member can slide vertically on the vertical sliding rod. A horizontal moving member is further included. The horizontal moving member is used to drive the active clamping member to move horizontally, thereby driving the vertical sliding rod to move horizontally, and further driving the first reflector plate or the second reflector plate to rotate. This implementation method has less noise and smoother transmission compared to directly driving the rotation of the first reflector plate and the second reflector plate through a gear transmission structure.

[0011] Preferably, a chute is formed on both the first reflector plate and the second reflector plate. A vertical sliding rod is provided in each chute. An elastic member is provided between the vertical sliding rod and the chute, and the elastic member is in a compressed state.

[0012] Preferably, the first reflector plate and / or the second reflector plate is a coated reflector plate.

[0013] A color sorter, characterized by comprising the above-mentioned deep ultraviolet condenser light source module.

[0014] In the present invention, the proposed deep ultraviolet condenser light source module:

[0015] 1. Compared with the LED condenser light source solution, the new structure combines the optical paths of at least two groups of LED light sources through a reflection and transmission structure and focuses them to a point on the material surface. Under the condition of increasing the volume by 20%, the light source brightness is increased by at least twice. Under the condition that the optical path arrangement in the color sorter is not affected, the lighting conditions required for deep ultraviolet identification are satisfied.

[0016] 2. The focused illumination provides a larger illumination angle for the entire illumination condition and reduces the shadow on the material surface. Some material gaps are easily blocked under the traditional vertical optical path, and the fluorescence reaction is not obvious, resulting in missed selection. Under the schematic optical path, the new light source provides an inclination angle, which can stimulate more fluorescence information on the material surface.

[0017] 3. The focusing angle is adjustable. The focusing distance of a single LED is adjusted by adjusting the distance of the condenser rod. For at least two combined optical paths, different lighting angle requirements of different models can be met by changing the inclination angle of the coating.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the structure of the condenser light source module in the prior art;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the reflector in some embodiments of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the reflector in some embodiments of the present invention;

[0023] Figure 5 It is a partial enlarged view of area A of the present invention;

[0024] 1. Filter; 2. Side condenser rod; 3. Main LED lamp; 4. Outer shell; 50. First side LED lamp; 51. Second side LED lamp; 6. Main condenser rod; 7. Middle support; 70. Extension part; 700. Sliding groove; 8. First reflector; 9. Second reflector; 10. First shaft; 11. Second shaft; 12. Vertical sliding rod; 120. Sliding through hole; 13. Roller; 14. Movable clamping part; 140. Penetrating part; 141. First abutting part; 142. Second abutting part; 15. Horizontal moving part; 16. Sliding groove; 17. Elastic part. Detailed Embodiments

[0025] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar symbols represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0026] As Figure 2 shown, a deep ultraviolet condenser light source module includes a housing 4 and an LED lamp installed in the housing 4. A filter 1 is also provided on the housing 4. The LED lamp includes a main LED lamp 3 and a side LED lamp 5 on the same side of the filter 1, that is, both the main LED lamp 3 and the side LED lamp 5 are installed on the same side of the filter 1. Specifically, the light emitted by the main LED lamp 3 is perpendicular to the light emitted by the side LED lamp 5. It also includes a reflecting member that receives the light emitted by the side LED lamp 5, and the light reflected by the reflecting member and the light emitted by the main LED lamp 3 both pass through the filter 1 and intersect outside the housing 4.

[0027] To further enhance the condensing effect, preferably, it also includes a main condenser rod 6 and a side condenser rod 2 installed in the housing 4. The main condenser rod 6 is located between the main LED lamp 3 and the reflecting member, and the side condenser rod 2 is located between the side LED lamp 5 and the reflecting member.

[0028] In this embodiment, specifically, the side LED lamp 5 includes a first side LED lamp 50 and a second side LED lamp 51. The first side LED lamp 50 and the second side LED lamp 51 are symmetric with respect to the middle light emitted by the main LED lamp 3. The intersection of the light emitted by the first side LED lamp 50 and the light emitted by the second side LED lamp 51 after being reflected by the reflecting member and then filtered by the filter 1 coincides with the intersection of the light emitted by the main LED lamp 3 after being filtered by the filter 1, thereby enhancing the condensing effect.

[0029] Specifically, the reflecting member includes a middle support 7, a first reflecting plate 8, and a second reflecting plate 9. The middle support 7 is fixed in the housing 4, and a through hole is provided on the middle support 7. The light emitted by the main LED lamp 3 passes through the through hole and then through the filter 1. The width of the through hole is greater than the outer diameter of the main condenser rod 6. The first reflecting plate is opposite to the first side LED lamp 50, and the second reflecting plate 9 is opposite to the second side LED lamp 51. The first reflecting plate 8 and the second reflecting plate are symmetric with respect to the central axis of the through hole. Specifically, both the first reflecting plate 8 and the second reflecting plate 9 are coated reflecting plates.

[0030] To ensure the condensing effect, preferably, the first reflecting plate 8 and the second reflecting plate 9 can rotate synchronously relative to the middle support 7.

[0031] As Figure 3Shown in some embodiments, specifically, a first shaft 10 with an axis coaxial with the axis of the central support 7 of the first reflector 8 is fixed on the first reflector 8, and a second shaft 11 with an axis coaxial with the axis of the central support 7 of the second reflector 9 is fixed on the second reflector 9. A transmission mechanism (not shown in the figure) is provided between the first shaft 10 and the second shaft 11. The transmission mechanism drives the first shaft 10 and the second shaft 11 to rotate at the same speed but in opposite directions. The structure is simple and can achieve the rotation of the first reflector 8 and the second reflector 9 at the same speed but in opposite directions. The transmission mechanism can be a gear transmission mechanism in the prior art. Of course, it can also be other transmission mechanisms that can achieve the same speed but opposite directions of rotation of two shafts. Of course, a driving motor can also be provided to drive the rotation of the first shaft 10 or the second shaft 11, thereby realizing the change of the angles of the first reflector 8 and the second reflector 9, and further meeting the requirements of different lighting angles for different models.

[0032] As Figures 4 - 5As shown, specifically in some embodiments, the bottom of the first reflector 8 is horizontally rotatably mounted on the middle support 7, and the bottom of the second reflector 9 is horizontally rotatably mounted on the middle support 7. Vertical sliding rods 12 are vertically slidably mounted on both sides of the first reflector 8 and the second reflector 9. The top of the vertical sliding rod 12 can slide relative to the middle support 7 in the vertical direction. Specifically, the top of one side of the middle support 7 is provided with an extending portion 70 extending outward. A sliding groove 700 is formed in the extending portion 70. The top of the vertical sliding rod 12 slides in the sliding groove 700. Preferably, the top of the sliding groove 700 is gradually inclined downward from the side close to the middle support 7 to the side away from the middle support 7. In order to further reduce friction, a roller 13 is rotatably mounted on the top of the vertical sliding rod 12, and the roller 13 contacts the top of the sliding groove 700; an active clamping member 14 is provided on the vertical sliding rod 12, and the active clamping member 14 can vertically slide on the vertical sliding rod 12. Specifically, a horizontally U-shaped sliding through hole 120 is formed in the vertical sliding rod 12. The active clamping member 14 includes a penetrating portion 140, a first abutting portion 141 and a second abutting portion 142. The penetrating portion 140 penetrates through the sliding through hole 120 and the penetrating portion 140 can vertically slide in the sliding through hole 120. The first abutting portion 141 abuts against the side of the first reflector 8 or the second reflector 9 away from the middle support 7, and the second abutting portion 142 abuts against the side of the first reflector 8 or the second reflector 9 close to the middle support 7. A horizontal moving member 15 is further included. The horizontal moving member 15 can be an electric cylinder or a pneumatic cylinder. In order to realize the synchronous rotation of the first reflector 8 and the second reflector 9, the horizontal moving members 15 connected to the first reflector 8 and the second reflector 9 act synchronously. The horizontal moving member 15 is used to drive the active clamping member 14 to move horizontally, thereby driving the sliding rod to move horizontally, and further driving the first reflector 8 or the second reflector 9 to rotate; during the process of the first reflector 8 or the second reflector 9 rotating towards the middle support 7, the vertical sliding rod 12 moves upward in the vertical direction, and the vertical sliding rod 12 moves towards the middle support 7. This implementation method has less noise and smoother transmission compared with directly driving the rotation of the first reflector 8 and the second reflector 9 through a gear transmission structure.

[0033] In order to further increase the stability, preferably, sliding grooves 16 are formed on both the first reflector 8 and the second reflector 9. A vertical sliding rod 12 is provided in each sliding groove 16. An elastic member 17 is provided between the vertical sliding rod 12 and the sliding groove 16. The elastic member 17 can be a spring, and the elastic member 17 is in a compressed state throughout the process.

[0034] A color sorter, characterized in that it includes the above-mentioned deep ultraviolet condenser light source module.

[0035] It should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0037] In the present invention, unless otherwise clearly defined and limited, terms such as "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium. It may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A deep ultraviolet focusing light source module, comprising a housing (4) and an LED lamp installed in the housing (4), characterized in that: The housing (4) is also provided with a filter (1), the LED lamp comprises a main LED lamp (3) and a side LED lamp located on the same side of the filter (1), and also comprises a reflector, the reflector receives light emitted by the side LED lamp, and the light reflected by the reflector and the light emitted by the main LED lamp (3) both pass through the filter (1) and intersect outside the housing (4); The side LED lights include a first side LED light (50) and a second side LED light (51), wherein the first side LED light (50) and the second side LED light (51) are symmetrical with respect to the middle light emitted by the main LED light (3); The reflector comprises a middle support (7), a first reflector (8) and a second reflector (9); the middle support (7) is fixed in the housing (4); a through hole is formed in the middle support (7); light emitted by the main LED lamp (3) passes through the filter (1) via the through hole; the first reflector (8) is opposite to the first side LED lamp (50); the second reflector (9) is opposite to the second side LED lamp (51); and the first reflector (8) and the second reflector (9) are symmetrical relative to the central axis of the through hole; The first reflective plate (8) and the second reflective plate (9) can rotate synchronously relative to the middle support (7); The bottom of the first reflector (8) is installed on the middle support (7) in a transversely rotatable manner, and the bottom of the second reflector (9) is installed on the middle support (7) in a transversely rotatable manner. Both sides of the first reflector (8) and the second reflector (9) are vertically slidably installed with vertical sliding rods (12). The top of the vertical sliding rod (12) can slide relative to the middle support (7). The vertical sliding rod (12) is provided with a movable clamping member (14). The movable clamping member (14) can slide vertically on the vertical sliding rod (12). The vertical sliding rod (12) also includes a horizontal moving member (15). The horizontal moving member (15) is used to drive the movable clamping member (14) to move horizontally, thereby driving the vertical sliding rod (12) to move horizontally, and thereby driving the first reflector (8) or the second reflector (9) to rotate. The first reflective plate (8) and the second reflective plate (9) are both provided with a sliding groove (16), a vertical sliding rod (12) is provided in each of the sliding grooves (16), an elastic member (17) is provided between the vertical sliding rod (12) and the sliding groove (16), and the elastic member (17) is in a compressed state.

2. The deep ultraviolet focusing light source module according to claim 1, characterized in that: It also includes a main focusing rod (6) and a side focusing rod (2) installed in the housing (4), wherein the main focusing rod (6) is located between the main LED lamp (3) and the reflector, and the side focusing rod (2) is located between the side LED lamp and the reflector.

3. The deep ultraviolet focusing light source module according to claim 1, characterized in that: A first shaft (10) is fixed on the first reflector (8), the axis of which is coaxial with the axis of the first reflector (8) relative to the middle support (7); a second shaft (11) is fixed on the second reflector (9), the axis of which is coaxial with the axis of the second reflector (9) relative to the middle support (7); a transmission mechanism is provided between the first shaft (10) and the second shaft (11), the transmission mechanism drives the first shaft (10) and the second shaft (11) to rotate at equal speeds but in opposite directions.

4. The deep ultraviolet focusing light source module according to claim 1, characterized in that: The first reflective plate (8) and / or the second reflective plate (9) are coated reflective plates.

5. A color sorter, characterized in that: It comprises the deep ultraviolet focusing light source module as described in any one of claims 1 to 4.

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