Optical filter disc capable of reducing light source reflected light problem and lamp

Abstract

An optical filter disc capable of relieving the light source reflected light problem and a lamp comprise a disc body with a plurality of light through holes evenly distributed in the outer circumferential edge and a plurality of optical filters used for covering the light through holes and matched with the light through holes in size, and are characterized by further comprising a base plate which shares the same center axis with the disc body and is tightly attached and fixed. One end of the optical filter is adhered to the outer circumferential edge of the disc, and the other end of the optical filter is adhered to the boundary of the base plate.

Description

Technical Field

[0001] The utility model relates to the technical field of stage lamps, and more specifically to a filter disc and a lamp capable of alleviating the problem of light reflection from a light source. Background Art

[0002] In stage lights, in order to obtain the best rendering effect, the filter disc is generally installed closest to the light source. This creates a problem. When the light source generates a strong light beam and the light beam passes through the filter, most of the light is refracted to form the light spot effect of the stage light; but some of the light is reflected back to the light source, causing the light source to overheat and shorten the life of the light source. In the existing technology, most of the reflected light reflected back to the light source is reduced by bending or tilting the color filter; however, the existing technology occupies a large space and is not suitable for smaller lamps. Summary of the invention

[0003] The utility model provides a filter plate and a lamp which can alleviate the problem of light source reflection, reduces the light reflected on the light source, and prevents the light source from burning out due to over-high temperature; and occupies little space, and can be applied to lamps of different volumes.

[0004] In order to solve the above problems, the utility model adopts the following solutions:

[0005] On the one hand, the technical solution adopted by the utility model is a filter disk that can reduce the problem of light reflection from a light source, including a disk with a plurality of through-hole lights evenly distributed on the outer circumference, and a plurality of filters with matching sizes for covering the through-holes. The utility model is characterized in that it also includes a pad tightly fixed with the disk coaxially, one end of the filter is adhered to the outer circumference of the disk, and the other end is adhered to the edge of the pad.

[0006] As a further improvement of the present invention, the number of light-through holes is one more than the number of filters.

[0007] As a further improvement of the utility model, the projection of the pad in the direction of the disk is located within the area surrounded by the inner edges of the plurality of light-through holes.

[0008] As a further improvement of the utility model, the pad includes a plurality of outer edges, and the plurality of edges are parallel to the inner edge of the light-through hole.

[0009] As a further improvement of the present invention, the thickness of the pad is 2 to 10 mm.

[0010] As a further improvement of the utility model, the filter, the disc and the backing plate are fixed by gluing.

[0011] As a further improvement of the present invention, a mounting hole for mounting a transmission member is provided at the center of the disc.

[0012] As a further improvement of the utility model, the light-through hole and the filter are both in the shape of arc trapezoids.

[0013] As a further improvement of the utility model, the filter is made of optical glass and has a color-plated film.

[0014] On the other hand, the utility model provides a lamp, including any one of the above-mentioned filter disks that can reduce the problem of light reflection from the light source, and also including a light source assembly and a light output lens. The filter disk can be rotatably arranged on the main light path between the light source assembly and the light output lens and is perpendicular to the main optical axis. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an expanded view of the filter disc of the utility model.

[0016] Figure 2 This is a schematic diagram of the assembly of the filter disc of the utility model.

[0017] Figure 3 The figure is a schematic diagram of the optical path of the filter disc of the utility model.

[0018] Figure 4 This is a schematic diagram of the assembly of the filter disc and the light source assembly of the utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the lamp of the present utility model.

[0020] In the figure: filter disc 10; disc 1; light hole 11; inner edge 111; mounting hole 12; mounting hole 13; mounting hole 14; outer circumference 15; filter 2; arc end 21; straight end 22; pad 3; boundary 31; outer edge 32; mounting hole 33; inner circle 34; central axis 4; transmission member 5; mounting hole 51; motor 6; light source assembly 20; light output lens 30. DETAILED DESCRIPTION

[0021] The utility model is described in detail below in conjunction with the accompanying drawings.

[0022] Combined with Figure 1 To Attachment Figure 3, a filter disc capable of alleviating the problem of light reflection from a light source, comprising a disc 1 having a plurality of light holes 11 evenly distributed on an outer circumference 15, a plurality of filters 2 of suitable size for covering the light holes 11, and a backing plate 3 tightly fixed to the disc 1 with a co-central axis 4, wherein one end of the filter 2 is adhered to the outer circumference 15 of the disc 1, and the other end is adhered to the boundary 31 of the backing plate 3. The disc 1 is a hollow circular flat plate, and a plurality of mounting holes (12, 13, 14) are provided on the plate. The backing plate 3 is located on the side of the disc 1 close to the light source and the side of the disc 1 away from the light source. The backing plate 3 has a plurality of mounting holes 33 corresponding to the mounting holes 14 on the disc; a fastener passes through the mounting holes (14, 33) on the backing plate 3 and the disc 1 to fix the backing plate 3 on the disc 1. The filter 2 is located below the disc 1 and just completely covers the light holes 11. There is a gap of 1 to 2 mm between every two adjacent filters 2, so that the filters 2 are arranged in an orderly and uniform manner on the filter disc 10. The two ends of the filter 2 are respectively attached to the outer circumference 15 of the disc 1 and the boundary 31 of the pad 3. Since there is a height difference between the boundary 31 of the pad 3 and the outer circumference 15 of the disc 1, the filter 2 is attached at both ends and is installed obliquely on the filter disc 10 in a suspended manner in the middle. The beneficial effect of this embodiment is that the oblique installation of the filter 2 effectively reduces the reflected light reflected on the light source, solving the problem of short service life of the light source due to overheating of the reflected light from the light source.

[0023] As a new implementation method, combined with the Figure 1 and attached Figure 2 , the number of light holes 11 is one more than the number of filters 2. The filter disc 10 includes a disc 1 and a filter 2. There are multiple light holes 11 on the disc 1 for installing the filter 2, and the filter 2 can completely cover the light holes 11 on the disc 1. In this embodiment, there is a light hole 11 on the filter disc 10 that is not installed with the filter 2, and the remaining light holes 11 are installed with filters 2. When other light holes 11 on the filter disc 10 are installed with filters 2 for changing the color and effect of the light, leaving one light hole 11 without the filter 2 can ensure that the basic white light or original light can pass through, providing basic lighting for the stage. The beneficial effect of this embodiment is that not only various colored light beams are emitted from the filter disc 10, but also basic white light, enriching the light spot effect emitted by the stage light.

[0024] As a new implementation method, combined with the Figure 1 and attached Figure 2, the projection of the pad 3 in the direction of the disk 1 is located within the area surrounded by the inner edges 111 of the multiple light-through holes 11. That is, the area surrounded by the boundary 31 is slightly smaller than the area surrounded by the inner edges 111, and the boundary 31 is located within the area surrounded by the inner edges 111. The pad 3 is a hollow flat plate, which is tightly installed below the disk 1. The beneficial effect of this embodiment is that the boundary 31 is located within the area surrounded by the inner edges 111 to ensure that the pad 3 does not exceed the area surrounded by the inner edges 111 of the light-through holes, thereby not hindering the light from passing through the light-through holes 11. In addition, the distance between the boundary 31 and the inner edge 111 of the light-through holes is small, which facilitates the adhesion of one end of the filter 2 to the boundary 31 of the pad 3.

[0025] Based on the above content, in this embodiment, combined with the attached Figure 1 and attached Figure 2 , the pad 3 includes a plurality of outer edges 32. The plurality of outer edges 32 are parallel to the inner edge 111 of the light-through hole 11, and each outer edge 32 of the pad 3 corresponds to a light-through hole 11, which is used to assist in the positioning and installation of the optical filter 2; the boundary 31 of the pad 3 is a polygon to adapt to the layout of the plurality of light-through holes 11. The beneficial effect of this embodiment is that the polygonal structure of the boundary 31 of the pad 3 facilitates the positioning and installation of the optical filter 2. Due to the parallel design of the outer edge 32 and the inner edge 111 of the light-through hole 11, and the one-to-one correspondence between each outer edge 32 and the light-through hole 11; when installing the optical filter 2, only one end of the optical filter 2 needs to be pasted to the outer edge 32 to realize its positioning function; this design ensures that the distance between each two adjacent optical filters 2 is consistent, and effectively prevents the misaligned installation of the optical filter 2.

[0026] Based on the above content, in this embodiment, combined with the attached Figure 1 , the thickness of the pad 3 is 2 to 10 mm. The thickness of the pad 3 determines the tilt angle of the filter 2. The tilt of the filter 2 is caused by the height difference between the pad boundary 31 and the outer circumference 15 of the disc 1. If the pad 3 is thick, the tilt angle of the filter 2 is large; if the pad 3 is thin, the tilt angle of the filter 2 is small. If the pad 3 is too thick, the filter disc 10 occupies a large space; if the pad 3 is too thin, the effect of reducing the reflected light of the light source is not good. The beneficial effect of this embodiment is that an optimal range is selected, so that the filter disc 10 occupies a small space and the effect of reducing the reflected light of the light source is good.

[0027] Based on the above content, in this embodiment, combined with the attached Figure 1, the filter 2 is fixed to the disc 1 and the pad 3 by glue dispensing. The pad 3 is located below the disc 1, and the filter 2 is installed on the boundary 31 of the pad 3 and the outer circumference 15 of the disc 1. Glue dispensing is to apply glue to both ends of the filter 2, that is, the positions where the two ends of the filter 2 are in contact with the boundary 31 and the outer circumference 15. Fixing the filter 2 on the filter disc 10 presents a richer light spot effect. The beneficial effect of this embodiment is that when the filter disc 10 is installed, the filter 2 is firmly fixed to the lower part of the filter disc 10, and it is not easy to fall or shift; and the filter 2 is installed at an angle, which effectively alleviates the problem of light reflected from the light source.

[0028] As a new implementation method, combined with the Figure 3 and attached Figure 4 , a mounting hole 12 for mounting a transmission member is provided at the center of the disk 1, and a plurality of mounting holes 13 for fixing the transmission member are distributed around the mounting hole 12. The transmission member of the utility model is a flange, and one end of the transmission member 5 passes through the mounting hole 12, which has a plurality of mounting holes 51 for fixing the transmission member 5, and the mounting holes 51 correspond to the mounting holes 13 of the disk 1; the transmission member 5 abuts against the disk 1 and is mounted on the disk 1 through fasteners. The pad 3 is a flat plate with a hollow polygonal structure; the mounting hole 12 on the disk 1 is circular and smaller than the inner circle 34 at the center of the pad 3. The beneficial effect of this embodiment is that the transmission member 5 is fixed on the disk 1 to transmit power to the filter disk 10.

[0029] As a new implementation method, combined with the Figure 1 and attached Figure 2 , the light hole 11 and the filter 2 are both arc-shaped trapezoids. The disk 1 is a circular flat plate, and the light hole 11 is an arc-shaped trapezoid, which can better fit the outer circumference 15 of the disk 1, so that the area of ​​the light hole 11 is maximized. The filter 2 is an arc-shaped trapezoid, and its arc end 21 is more closely fitted with the outer circumference 15 of the disk 1, and its other straight end 22 is better in line with the pad boundary 31. The beneficial effect of this embodiment is that the light hole 11 can pass more light, making the formed light spot brighter; the shape of the filter 2 allows the filter 2 to be more closely and tiltedly installed on the filter disk 10.

[0030] As a new implementation method, combined with the Figure 1 , the material of the filter 2 is optical glass, and the filter 2 is coated with a color film. The beneficial effect of this embodiment is that, since the optical glass has high light transmittance, the loss of light passing through the filter 2 can be reduced; the optical glass has high wear resistance, so the light incident surface of the filter 2 is a smooth plane, which can make the color film more firmly attached to the light incident surface; the light incident surface of the filter can also be coated with color films of different colors, making the light spot effect formed by the stage light more colorful.

[0031] Combined with Figure 5 A lamp 50 includes any filter disc 10 described above, and also includes a light source assembly 20 and a light output lens 30. The filter disc 10 is rotatably arranged on the main light path between the light source assembly 20 and the light output lens 30 and is perpendicular to the main optical axis 40. The filter disc 10 and the light source assembly 20 are installed inside the lamp 50. The light hole 11 of the filter disc 10 is located between the light source assembly 20 and the light output lens 30, and the center of the light hole 11 overlaps with the main optical axis 40. The filter disc 10 is rotatable and is driven to rotate by a motor 6 installed below it. Filters 2 of different colors or different functions can be switched according to different needs. The traditional device for reducing light reflected from the light source adopts a tilting method of the filter disc mounting part. Although this device can effectively reduce the problem of light reflected from the light source, it occupies a large space and is not suitable for lamps with smaller volumes. The filter disc 10 of the utility model is perpendicular to the main optical axis 40, and because the filter 2, the disc 1 and the pad 3 are all flat structures, the filter 2 is installed obliquely on the filter disc 10, so the filter disc 10 occupies a small space. The beneficial effect of this embodiment is that the filter disc 10 that occupies a small space is suitable for lamps 50 of different volumes, and the filter 2 installed obliquely on the filter disc 10 can effectively reduce the problem of light reflected from the light source.

Claims

1. A filter disc capable of alleviating the problem of light reflection from a light source, comprising a disc having a plurality of light holes evenly distributed on the outer circumference, and a plurality of filters with matching sizes for covering the light holes, characterized in that: It also includes a backing plate which is tightly fixed with the disk coaxially. One end of the filter is pasted to the outer circumference of the disk, and the other end is pasted to the edge of the backing plate.

2. The filter disc capable of alleviating the problem of light source reflection according to claim 1, characterized in that: The number of the light-through holes is one more than the number of the filters.

3. The filter disc capable of alleviating the problem of light source reflection according to claim 1, characterized in that: The projection of the pad in the direction of the disk is located within the area surrounded by the inner edges of the plurality of light-through holes.

4. The filter disc capable of alleviating the problem of light source reflection according to claim 3, characterized in that: The pad includes a plurality of outer edges, and the plurality of outer edges are parallel to the inner edge of the light-through hole.

5. The filter disc capable of alleviating the problem of light source reflection according to claim 3, characterized in that: The thickness of the backing plate is 2 to 10 mm.

6. The filter disc capable of alleviating the problem of light source reflection according to claim 4, characterized in that: The filter, the disc and the backing plate are fixed by gluing.

7. The filter disc capable of alleviating the problem of light source reflection according to claim 1, characterized in that: A mounting hole for mounting a transmission member is provided at the center of the disc.

8. The filter disc capable of alleviating the problem of light source reflection according to claim 1, characterized in that: The light-through hole and the filter are both in the shape of arc trapezoids.

9. The filter disc capable of alleviating the problem of light source reflection according to claim 1, characterized in that: The filter is made of optical glass and has a color-coated film.

10. A lamp, characterized in that: It comprises a filter disk capable of alleviating the problem of light reflected from a light source as described in any one of claims 1 to 9, and also comprises a light source assembly and a light output lens, wherein the filter disk is rotatably arranged on a main light path between the light source assembly and the light output lens and is perpendicular to the main optical axis.

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