A light beam shaping cutter and a lamp having the same

Abstract

The application discloses a light beam shaping cutter and a lamp with the same, wherein the first cutting pair of the light beam shaping cutter comprises two cutting units oppositely arranged along an arrangement axis, the light shielding sheet of the cutting unit has a first posture and a second posture before passing the center point, at this time, the light beam cutting straight edges are respectively at an angle of 60° with the corresponding arrangement axis on both sides of the center point, so that as long as the light beam cutting straight edge of the third light shielding sheet is parallel to the arrangement direction of the two cutting units of the first cutting pair, the light-transmitting shaping hole in a regular triangle around the center point can be ensured, and due to the fact that the light shielding sheet has the first posture at multiple positions and the second posture at multiple positions, the size and position of the regular triangle can be changed by adjusting the position of the light shielding sheet relative to the center point under the premise that the postures remain unchanged.

Description

Technical Field

[0001] This invention relates to the field of stage lighting technology, and more specifically, to a beam shaping cutter and a lighting fixture having the same. Background Technology

[0002] To project light spots with various contours, stage lights typically require a beam shaper cutter. This cutter uses a light-blocking plate to cut into the beam from the outside, blocking the light at its periphery. The position and angle of the light-blocking plate can be freely adjusted to flexibly cut the light spot into various shapes. However, current beam shapers cannot achieve some special shapes. Summary of the Invention

[0003] To overcome at least one of the defects of the prior art, the present invention provides a beam shaping cutter that can form a 60° angle between two opposing light-shielding plates. By using the beam cutting straight edge of a third light-shielding plate that is parallel to the arrangement direction of the two opposing cutting units, an equilateral triangle can be cut.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a beam shaping cutter, comprising a first cutting pair, the first cutting pair comprising two cutting units located on both sides of a center point and symmetrically rotated 180° about the center point, each cutting unit comprising a light-shielding plate, a first linkage mechanism, a second linkage mechanism, and a guiding mechanism; the light-shielding plate has a hinged side and a beam cutting straight edge arranged opposite each other, the beam cutting straight edge being closer to the center point than the hinged side; both the first linkage mechanism and the second linkage mechanism comprise a driving rod and a driven rod hinged to each other, wherein the other end of the driving rod is fixedly connected to the drive shaft of a motor, and the other end of the driven rod is fixedly connected to the drive shaft of the motor. The hinged side is hinged, with two hinge points located at both ends. The guiding mechanism guides one of the hinge points, limiting its trajectory to an arc away from the center point. The two cutting units have an arrangement axis that is the same as the arrangement direction of the two units and passes through the center point. The two motors corresponding to each light-shielding plate are located on both sides of the arrangement axis. Each light-shielding plate has a first posture at multiple positions and a second posture at multiple positions before the straight edge of the beam cutting crosses the center point. When the light-shielding plate is in the first posture and the second posture respectively, the straight edge of its beam cutting forms an angle of 60° with the corresponding arrangement axis on both sides of the center point.

[0005] The first cutting pair of the beam shaping cutter includes two cutting units arranged opposite each other along the arrangement axis. Since the light-shielding plate of the cutting unit has a first posture and a second posture before passing the center point, the beam cutting straight edge forms an angle of 60° with the corresponding arrangement axis on both sides of the center point. Therefore, as long as the beam cutting straight edge of the third light-shielding plate is parallel to the arrangement direction of the two cutting units of the first cutting pair, it can be ensured that an equilateral triangular light-transmitting shaping hole can be formed around the center point. Furthermore, since the light-shielding plate has a first posture in multiple positions and a second posture in multiple positions, the size and position of the equilateral triangle can be changed by adjusting the position of the light-shielding plate relative to the center point while keeping the posture unchanged.

[0006] Furthermore, the arc shape is a circular arc. The circular arc trajectory facilitates the parameter control of the angle and position of the light-shielding plate during software design.

[0007] Furthermore, the guiding mechanism is a rocker arm, one end of which is pivotally fixed, and the other end is hinged to one of the hinge points on the hinge side. Directly using the rocker arm to control the movement trajectory of one of the hinge points on the hinge side is an arc shape away from the center point. This structure is simple, requires low installation precision, and facilitates the restriction of movement of the light-shielding sheets on different planes.

[0008] Furthermore, when the first linkage mechanism and the second linkage mechanism reach their maximum length, the beam-cutting straight edge of the light-shielding plate is located after passing the center point. This allows for complete beam blocking through the cooperation of at least two light-shielding plates.

[0009] Furthermore, it also includes a white circle with a light-transmitting aperture, the center of which coincides with the center point. The white circle can block stray light from the edges of the light beam, preventing stray light from appearing in the light spot projected after passing through the cutter.

[0010] Furthermore, among the multiple positions of the light-shielding plate having a first posture and among the multiple positions having a second posture, each includes a position where the light-shielding plate blocks the 120° arc of the light-transmitting circular hole. Thus, when the two light-shielding plates of the first cutting pair block the 120° arc of the light-transmitting circular hole in the first posture and the second posture respectively, if the third light-shielding plate blocks the 120° arc of the light-transmitting circular hole and its beam-cutting straight edge is parallel to the arrangement direction of the two cutting units of the first cutting pair, a light-transmitting shaped hole with an inscribed equilateral triangle can be formed within the light-transmitting circular hole; that is, the largest possible equilateral triangle light-transmitting shaped hole can be formed within the light-transmitting circular hole.

[0011] Furthermore, all the cutting units of the cutter are located on the same side of the white circle. This is to minimize the spacing between the light-shielding plates, so that the straight edge of the beam cut by each light-shielding plate can be clearly imaged.

[0012] Furthermore, each of the light-shielding plates of the cutter is located in a plane that is parallel and spaced apart from each other. This ensures that the movement of the light-shielding plates is independent and prevents them from colliding with each other.

[0013] Furthermore, it also includes a second cutting pair that is symmetrical to the first cutting pair about a 90° rotation of the center point. That is, the cutter is equivalent to having four cutting units that are rotationally symmetrical about the center point, thus allowing the same pattern with different rotation angles to be cut through the cooperation of the light-shielding plate. In addition, since the four cutting units are rotationally symmetrical about the center point, it is easier to control the angle and position of the light-shielding plate in software, requiring only a single control model.

[0014] Furthermore, it also includes a support member that supports the mounting plate for mounting the cutting unit to rotate around the center point. With the support of the support member, the mounting plate for mounting the cutting unit can rotate freely, thereby enabling the rotation of the shape cut by the light-shielding sheet without driving the first linkage mechanism and the second linkage mechanism, and the rotation is also more continuous and smooth.

[0015] The present invention also provides a lamp holder, including a lamp head, a light source located within the lamp head, and any of the aforementioned cutters. Light emitted from the light source passes through the cutter and exits from the light outlet of the lamp head. This projects a light spot onto the target surface that matches the pattern formed by the light-shielding plate of the cutter.

[0016] Furthermore, the device also includes a focusing lens and / or a magnifying lens disposed on the side of the cutter away from the light source, the focusing lens and / or magnifying lens having a movement drive structure for driving its movement along the optical path. The focusing lens can adjust the sharpness of the light spot, and the magnifying lens can zoom in and out of the light spot. Attached Figure Description

[0017] Figure 1 This is an exploded structural diagram of the beam shaping cutter of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the light-shielding sheet of the present invention, which forms an equilateral triangle inscribed in a white circle.

[0019] Figure 3 This is a schematic diagram of the structure of the light-shielding sheet of the present invention, in which the straight edge of the beam cutting is located beyond the center point.

[0020] Figure 4This is a schematic diagram of the square structure of the light-shielding sheet of the present invention.

[0021] Figure 5 This is a schematic diagram of the cooperative structure of the cutting unit, mounting plate and support member of the present invention.

[0022] Figure 6 This is a cross-sectional structural diagram of the lamp of the present invention.

[0023] In the picture: 100. First cutting pair; 110. Cutting unit; 111. First linkage mechanism; 1111. Drive rod; 1112. Passive rod; 112. Second linkage mechanism; 113. Light shield; 1131. Hinge side; 1132. Beam cutting straight edge; 114. Arrangement axis; 115. Rocker arm; 116. Motor; 1161. Drive shaft; 120. Center point; 130. White circle; 131. Light-transmitting circular hole; 140. Separator; 200. Second cutting pair; 300. Mounting plate; 400. Support; 500. Lamp head; 510. Light source; 520. Light outlet; 530. Focusing lens; 540. Magnifying lens; 600. Arm; 700. Chassis; 800. Cutter. Detailed Implementation

[0024] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0025] like Figure 1 , Figure 2This invention provides a beam shaping method, including a first cutting pair 100. The first cutting pair 100 includes two cutting units 110 located on both sides of a center point 120 and symmetrically rotated 180° about the center point 120. Each cutting unit 110 includes a light-shielding plate 113, a first linkage mechanism 111, a second linkage mechanism 112, and a guiding mechanism. The light-shielding plate 113 has a hinged side 1131 and a beam cutting straight edge 1132 arranged opposite to each other. The beam cutting straight edge 1132 is closer to the center point 120 than the hinged side 1131. The first linkage mechanism 111 and the second linkage mechanism 112 each include a driving rod 1111 and a driven rod 1112 that are hinged to each other. The other end of the driving rod 1111 is fixedly connected to the drive shaft 1161 of the motor 116, and the other end of the driven rod 1112 is fixedly connected to the drive shaft 1161 of the motor 116. Hinged to the hinge side 1131, the two hinge points of the hinge side 1131 are located at the two ends respectively. The guiding mechanism guides one of the hinge points and restricts its trajectory to an arc away from the center point 120. The two cutting units 110 have an arrangement axis 114 with the same arrangement direction as the two and passing through the center point 120. The two motors 116 corresponding to each light shield 113 are located on both sides of the arrangement axis 114. Each light shield 113 has a first posture at multiple positions and a second posture at multiple positions before the beam cutting straight edge 1132 crosses the center point 120. When the light shield 113 is in the first posture and the second posture respectively, its beam cutting straight edge 1132 forms an angle of 60° with the corresponding arrangement axis 114 on both sides of the center point 120.

[0026] In this invention, the two cutting units 110 of the first cutting pair 100 are arranged in the vertical direction. The beam cutting straight edge 1132 of the light shield 113 can form an angle of 60° with the corresponding arrangement axis 114 at multiple positions at different distances from the center point 120. When each light shield 113 is in the first posture and the second posture, its beam cutting straight edge 1132 is located on the left and right sides of the center point 120, respectively.

[0027] The first cutting pair 100 of the beam shaping cutter 800 includes two cutting units 110 arranged opposite each other along the arrangement axis 114. Since the light-shielding plate 113 of the cutting unit 110 has a first posture and a second posture before passing the center point 120, the beam cutting straight edge 1132 forms an angle of 60° with the corresponding arrangement axis 114 on both sides of the center point 120. Therefore, as long as the beam cutting straight edge 1132 of the third light-shielding plate 113 is parallel to the arrangement direction of the two cutting units 110 of the first cutting pair 100, it can be ensured that an equilateral triangular light-transmitting shaping hole can be formed around the center point 120. Since the light-shielding plate 113 has a first posture in multiple positions and a second posture in multiple positions, the size and position of the equilateral triangle can be changed by adjusting the position of the light-shielding plate 113 relative to the center point 120 while keeping the posture unchanged.

[0028] It should be noted that the first cutting pair 100 includes two cutting units 110 located on both sides of the center point 120 and symmetrical about the center point 120 by rotating 180°. This means that when the first linkage mechanism 111 and the second linkage mechanism 112 of the two cutting units 110 are in the same position, the two cutting units 110 are symmetrical about the center point 120 by rotating 180°, but not always symmetrical. The first linkage mechanism 111 and the second linkage mechanism 112 of the two cutting units 110 are driven independently. The two light-shielding plates 113 can have different positions or different postures.

[0029] The guiding mechanism guides one of the hinge points of the hinge side 1131, restricting its trajectory to an arc away from the center point 120, meaning that both ends of the arc trajectory are farther away from the center point 120 than the middle position.

[0030] In a preferred embodiment of the present invention, the arc is a circular arc. The circular arc trajectory facilitates the parameter control of the angle and position of the light-shielding plate 113 during software design.

[0031] In a preferred embodiment of the present invention, the guiding mechanism is a rocker arm 115, one end of which is pivotally fixed, and the other end is hinged to one of the hinge points of the hinge side 1131. Directly using the rocker arm 115 to control the movement trajectory of one of the hinge points of the hinge side 1131 to be an arc away from the center point 120 results in a simple structure, low installation accuracy requirements, and facilitates movement restriction of the light-shielding plates 113 on different planes.

[0032] In this embodiment, both the passive rod 1112 and the rocker arm 115 are straight rods.

[0033] In other embodiments, the guide post and guide groove can be used to guide one of the hinge points of the hinge side 1131.

[0034] like Figure 3 In a preferred embodiment of the present invention, when the first linkage mechanism 111 and the second linkage mechanism 112 reach their maximum length, the beam-cutting straight edge 1132 of the light-shielding plate 113 is located after passing the center point 120. This allows for complete beam blocking through the cooperation of at least two light-shielding plates 113.

[0035] In this embodiment, after the beam cutting straight edge 1132 of the light-shielding plate 113 crosses the center point 120, the distance between the beam cutting straight edge 1132 and the center point 120 is greater than or equal to 1 mm, further greater than or equal to 2 mm, further greater than or equal to 2.5 mm, and further greater than or equal to 3 mm.

[0036] like Figure 1 , Figure 2 In a preferred embodiment of the present invention, a white circle 130 with a light-transmitting circular aperture 131 is further included, the center of which coincides with the center point 120. The white circle 130 can block stray light at the edge of the light beam, preventing stray light from appearing in the light spot projected after passing through the cutter 800.

[0037] In a preferred embodiment of the present invention, among the multiple positions of the light-shielding plate 113 having a first posture and among the multiple positions having a second posture, there is a position in which the light-shielding plate 113 blocks the 120° arc of the light-transmitting circular hole 131. Thus, when the two light-shielding plates 113 of the first cutting pair 100 block the 120° arc of the light-transmitting circular hole 131 in the first posture and the second posture respectively, if the third light-shielding plate 113 blocks the 120° arc of the light-transmitting circular hole 131 and its beam-cutting straight edge 1132 is parallel to the arrangement direction of the two cutting units 110 of the first cutting pair 100, the light-shielding plates 113 within the light-transmitting circular hole 131 can be connected end-to-end, forming an inscribed equilateral triangle light-transmitting hole within the light-transmitting circular hole 131. That is, the largest possible equilateral triangle light-transmitting hole can be formed within the light-transmitting circular hole 131.

[0038] In this embodiment, the length L1 of the line connecting the two drive rods 1111 of the first cutting pair 100 and the drive shaft 1161 of the corresponding motor 116 is 2.66cm, and it is parallel to the corresponding arrangement axis 114. The distance L2 between the center point 120 and the line is 5.78cm. The distance L3 between the connection points of the drive rods 1111 of the first linkage mechanism 111 and the second linkage mechanism 112 and the drive shaft 1161 and the driven rod 1112 is 1.03cm. The distance L4 between the connection points of the driven rods 1112 of the first linkage mechanism 111 and the second linkage mechanism 112 and the drive rods 1111 and the light-shielding plate 113 is 2.89cm. The hinge side 1131 of the light-shielding plate 113 and the two driven rods... The distance L5 between the connection point of 1112 is 2.85cm. The distance L6 between the connection point on the hinge side 1131 of the light shield 113 and the straight edge 1132 of the beam cutting is 2.22cm. The distance L7 between the two connection points of the rocker arm 115 is 4.93cm. The distances L8 and L9 between the pivot fixing point of the rocker arm 115 and the drive shafts 1161 of the two motors 116 in the same first cutting pair 100 are 5.36cm and 5.73cm, respectively. The pivot fixing point of the rocker arm 115 is located on the side of the line connecting the two drive rods 1111 of the first cutting pair 100 and the drive shafts 1161 of the corresponding motors 116, close to the center point 120. The radius R of the light-transmitting circular hole 131 of the white circle 130 is 0.79cm.

[0039] Therefore, when the first linkage mechanism 111 and the second linkage mechanism 112 reach their maximum length, the beam cutting straight edge 1132 of the light shield 113 crosses the center point 120 and the distance between the center point 120 and the center point 120 is 0.29 cm.

[0040] In a preferred embodiment of the present invention, all the cutting units 110 of the cutter 800 are located on the same side of the white circle 130. This is to minimize the spacing between the light-shielding plates 113, so that the beam cutting straight edge 1132 of each light-shielding plate 113 can be clearly imaged.

[0041] In a preferred embodiment of the present invention, each of the light-shielding plates 113 of the cutter 800 is located in a plane that is parallel and spaced apart from each other. This ensures that the movement of the light-shielding plates 113 is independent and avoids collisions between them.

[0042] In this embodiment, a separator 140 is provided between adjacent light-shielding sheets 113.

[0043] In this embodiment, the white circle 130 is located on the back side of all the light-shielding sheets 113, that is, on the side away from the light source 510.

[0044] In a preferred embodiment of the invention, a second cutting pair 200 is further included, which is symmetrical to the first cutting pair 100 about the center point 120 by rotating 90°. That is, the cutter 800 is equivalent to having four cutting units 110 that are rotationally symmetrical about the center point 120, thereby allowing the same pattern with different rotation angles to be cut through the cooperation of the light-shielding plate 113. Furthermore, since the four cutting units 110 are rotationally symmetrical about the center point 120, it is easier to control the angle and position of the light-shielding plate 113 using software, requiring only one control model.

[0045] In this invention, the two cutting units 110 of the second cutting pair 200 are arranged in the left-right direction.

[0046] Thus, as long as the first linkage mechanism 111 and the second linkage mechanism 112 of the first cutting pair 100 and the second cutting pair 200 have the same control parameters, the four light-shielding plates 113 can form a rotationally symmetrical light-transmitting shaped hole within the light-transmitting circular hole 131 of the white circle 130, for example... Figure 4 The square-shaped hole in the middle.

[0047] like Figure 5 In a preferred embodiment of the present invention, a support member 400 is further included to support the mounting plate 300 for mounting the cutting unit 110 to rotate around the center point 120. With the support of the support member 400, the mounting plate 300 for mounting the cutting unit 110 can rotate freely, thereby enabling the rotation of the shape cut by the light-shielding sheet 113 without driving the first linkage mechanism 111 and the second linkage mechanism 112, and the rotation is also more continuous and smooth.

[0048] In this embodiment, the mounting plate 300 is circular, with its center coinciding with the center point 120. The support member 400 consists of four horizontally placed clamping wheels arranged around the mounting plate 300, and the sides of the clamping wheels have clamping grooves for clamping the edge of the mounting plate 300.

[0049] like Figure 6 The present invention also provides a lamp, including a lamp head 500, a light source 510 located within the lamp head 500, and any of the aforementioned cutters 800. Light emitted from the light source 510 passes through the cutter 800 and exits from the light outlet 520 of the lamp head 500. This projects a light spot onto the target surface that matches the pattern formed by the light-shielding plate 113 of the cutter 800.

[0050] In this embodiment, the lamp head 500 is further supported by an arm 600 and a housing 700, which supports the rotation of the arm 600, thereby enabling the light emitted from the lamp head 500 to be projected in any direction.

[0051] In a preferred embodiment of the present invention, a focusing lens 530 and / or a magnifying lens 540 are further disposed on the side of the cutter 800 away from the light source 510. The focusing lens 530 and / or the magnifying lens 540 have a movement drive structure for driving them to move along the optical path. The focusing lens 530 can adjust the sharpness of the light spot, and the magnifying lens 540 can zoom in and out of the light spot.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A beam shaping cutter, characterized in that, The system includes a first cutting pair (100), which comprises two cutting units (110) located on either side of a center point (120) and symmetrically rotated 180° about the center point (120). Each cutting unit (110) includes a light-shielding plate (113), a first linkage mechanism (111), a second linkage mechanism (112), and a guiding mechanism. The light-shielding plate (113) has a hinged side (1131) and a beam cutting straight edge (1132) arranged opposite to each other. The beam cutting straight edge (1132) is closer to the center point (120) than the hinged side (1131). Both the first linkage mechanism (111) and the second linkage mechanism (112) include a driving rod (1111) and a driven rod (1112) that are hinged to each other. The other end of the driving rod (1111) is fixedly connected to the drive shaft (1161) of the motor (116), and the other end of the driven rod (1112) is fixedly connected to the drive shaft (1161) of the motor (116). The end is hinged to the hinge side (1131), and the two hinge points of the hinge side (1131) are located at the two ends respectively. The guide mechanism guides one of the hinge points and restricts its trajectory to an arc away from the center point (120). The two cutting units (110) have an arrangement axis (114) that is the same as the arrangement direction of the two and passes through the center point (120). The two motors (116) corresponding to each light shield (113) are located on both sides of the arrangement axis (114). Each light shield (113) has a first posture and a second posture at multiple positions before the beam cutting straight edge (1132) crosses the center point (120). When the light shield (113) is in the first posture and the second posture respectively, its beam cutting straight edge (1132) forms an angle of 60° with the corresponding arrangement axis (114) on both sides of the center point (120).

2. The beam shaping cutter according to claim 1, characterized in that, The arc is a circular arc.

3. The beam shaping cutter according to claim 2, characterized in that, The guiding mechanism is a rocker arm (115), one end of which is pivotally fixed, and the other end is hinged to one of the hinge points of the hinge side (1131).

4. The beam shaping cutter according to claim 1, characterized in that, When the first linkage (111) and the second linkage (112) reach their maximum length, the beam-cutting straight edge (1132) of the light-shielding plate (113) is located after the center point (120).

5. The beam shaping cutter according to claim 1, characterized in that, It also includes a white circle (130) with a light-transmitting circular hole (131), the center of which coincides with the center point (120).

6. The beam shaping cutter according to claim 5, characterized in that, Among the multiple positions of the light-shielding plate (113) having a first posture and among the multiple positions of the second posture, there is a position in which the light-shielding plate (113) blocks the light-transmitting circular hole (131) by a 120° arc.

7. The beam shaping cutter according to claim 5, characterized in that, All of the cutting units (110) of the cutter are located on the same side of the white circle (130).

8. The beam shaping cutter according to claim 1, characterized in that, Each of the light-shielding plates (113) of the cutter is located in a plane that is parallel and spaced apart from each other.

9. The beam shaping cutter according to any one of claims 1-8, characterized in that, It also includes a second cutting pair (200) that is symmetrical to the first cutting pair (100) about the center point (120) by rotating 90°.

10. The beam shaping cutter according to claim 1, characterized in that, It also includes a support (400) that supports the mounting plate (300) for mounting the cutting unit (110) to rotate about the center point (120).

11. A lamp, characterized in that, Includes a lamp head (500), a light source (510) located within the lamp head (500), and a cutter according to any one of claims 1-10, wherein the light emitted by the light source (510) passes through the cutter and is emitted from the light outlet (520) of the lamp head (500).

12. The lamp according to claim 11, characterized in that, It also includes a focusing lens (530) and / or a magnifying lens (540) disposed on the side of the cutter away from the light source (510), the focusing lens (530) and / or the magnifying lens (540) having a movement drive structure for driving it to move along the optical path.

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