CN210319856U

CN210319856U - Gradual change formula light filter and have its stage lamp

Info

Publication number: CN210319856U
Application number: CN201921434632.3U
Authority: CN
Inventors: 蒋伟楷; 其他发明人请求不公开姓名
Original assignee: Guangzhou Haoyang Electronic Co Ltd
Current assignee: Guangzhou Haoyang Electronic Co Ltd; Golden Sea Professional Equipment Ltd
Priority date: 2019-08-31
Filing date: 2019-08-31
Publication date: 2020-04-14
Anticipated expiration: 2029-08-31

Abstract

The utility model discloses a gradual change formula light filter, include transparent substrate and cover in filter coating on the substrate, filter coating has linear colour mixture region, the colour mixture is regional the thickness gradual change of filter coating, filter coating's thickness is big more, and the light beam colour after the filtration is darker, and thickness is little more, and the light beam colour after the filtration is lighter. The linear change of the color of the light beam is ensured, and the color mixing of the plurality of optical filters in the color mixing process is uniform, so that the phenomenon of moire is avoided.

Description

Gradual change formula light filter and have its stage lamp

Technical Field

The utility model relates to a stage lamp technical field, more specifically relates to a gradual change formula light filter and have its stage lamp.

Background

With the continuous development of stage lighting technology, in order to shape the stage color rendering effect, the optical filter is generally used for mixing light to stage lighting at present, and the existing optical filter generally adopts a mode of performing laser drilling on a filter film to puncture a film layer so as to realize linear change of colors, wherein the colors are lighter in places with dense holes and darker in places with sparse holes. However, when a plurality of filters are cut into the optical path simultaneously, since there is a possibility that the holes of the two filters are connected in series in a direction perpendicular to the optical path, the projected light beams may have moire phenomenon, which affects the stage lighting effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome at least one kind defect among the above-mentioned prior art, provide a gradual change formula light filter, when the linear change of guarantee light beam color, avoid appearing the mole line phenomenon at the colour mixture in-process.

In order to solve the technical problem, the utility model discloses a technical scheme is: the gradual change type optical filter comprises a transparent substrate and a filter film covering the substrate, wherein the filter film is provided with a linear color mixing area, and the thickness of the filter film in the color mixing area is gradually changed.

Gradual change formula light filter, stage lamp light beam pass through the transparence the substrate gets into the filter coating thereby realize the colour change under the filtering action of filter coating, the thickness of filter coating is big more, and the light beam colour after the filtration is darker, and thickness is little more, and the light beam colour after the filtration is lighter more. Because the thickness of the filter film in the color mixing area is uneven, the color of the light beam passing through the color mixing area is projected to present colors with different depths, the thickness of the filter film in the color mixing area is gradually changed by adopting a film cutting technology, the color of the light beam projected from the color mixing area is changed along with the change of the thickness of the filter film, the change is relatively gentle, and the vision of people presents a linear change. In addition, compared with a method of directly realizing linear color change of the filter film by a perforation density method, the gradual change type filter does not generate a moire phenomenon in the color mixing process.

Furthermore, the color mixing area is semicircular, and the straight edge of the semicircle is positioned at the edge position of the filter film. The shape of colour mixture region and the shape phase-match of stage lighting source light-emitting window, the semicircular straight flange is located the marginal position of filter coating makes when the light beam is originally cut into in the colour mixture region, the regional area of colour mixture is big enough, can be to the process all light beams of light filter.

Furthermore, the filter film in the color mixing region is step-shaped and comprises a plurality of transverse surfaces and a longitudinal surface, the transverse surfaces are sequentially arranged, the longitudinal surface is connected with two adjacent transverse surfaces, and the longitudinal surface and the transverse surface deviate from the semicircular straight edge and are arranged in an arc shape. The transverse face is substantially parallel to the base sheet and the longitudinal face is substantially perpendicular to the base sheet. The longitudinal surface and the transverse surface deviate from the semicircular straight edge and are arranged in an arc shape and matched with the stage lighting source light outlet.

Further, the filter film in the color mixing region is step-shaped and comprises a plurality of transverse surfaces and a longitudinal surface, wherein the transverse surfaces are sequentially arranged, and the longitudinal surface is used for connecting two adjacent transverse surfaces. The transverse surface is approximately parallel to the substrate, the longitudinal surface is approximately perpendicular to the substrate, and laser approximately perpendicular to the filter film can be used for scanning and cutting for multiple times, so that the color mixing area is formed to have a linearly gradually changing thickness, and the manufacturing is simpler.

Further, the transverse plane is perpendicular to the longitudinal plane. The thickness of the filter film is extremely thin and is generally 1-2 mu m, and the transverse plane is vertical to the longitudinal plane, so that the laser can be used for scanning and cutting for multiple times easily.

Further, the lateral surface is disposed obliquely. Namely, the height of the side, close to the color mixing region, of the transverse plane, where the thickness is thicker is higher than that of the side, close to the color mixing region, where the thickness is thinner, so that the thickness of the filter film on the same transverse plane can be slowly changed, and the gradient performance of the color mixing region is enhanced.

Further, the longitudinal faces are arranged obliquely. Namely, the distance between one side of the longitudinal surface far away from the substrate and the thicker side of the color mixing area is smaller than the distance between one side of the longitudinal surface close to the substrate and the thicker side of the color mixing area, so that the thickness of the filter film is gradually transited from one step to the other step as much as possible without being excessively abrupt.

Furthermore, one side of the filter film, which is far away from the substrate, in the color mixing area is a flat inclined plane. The color mixing area is more natural in color mixing, and the color transformation of the color mixing area is completely linear change.

Further, the filter film further comprises a panchromatic area with uniform film layer thickness, and the filter film thickness of the panchromatic area is equal to the maximum thickness of the filter film of the color mixing area. The thickness of the filter film in the full-color area is uniform, so that the color of the light beam passing through the full-color area is the same after being projected. The thickness of the filter film in the panchromatic region is equal to the maximum thickness of the filter film in the color mixing region, so that when the color of the light beam is changed from the gradual change region to the panchromatic region, the color change gradient is gentle, the color change cannot be suddenly changed, and the color change presents uniform and gradual change when seen by naked eyes of people.

A stage lamp comprises any one of the above gradient filters, wherein the filter is a CMY film, an RGB film, a color temperature film, a color rendering index film or a color film. The CMY film is generally cyan, magenta or yellow, and changes the color of light beams passing through the CMY film by adopting a subtractive color mixing mode; the RGB plates are generally red, green or blue, and the color of the light beams passing through the RGB plates is changed by adopting an additive color mixing mode; the color temperature sheet changes the color temperature of the light beam passing through the color temperature sheet; the color rendering index sheet changes the color rendering index of the light beam passing through the color rendering index sheet; the color chips are of specific colors set according to actual requirements, and light beams passing through the color chips can directly project certain colors.

Drawings

Fig. 1 is a schematic structural diagram of a graded filter according to embodiment 1 of the present invention.

Fig. 2 is a schematic top view of the filter film according to embodiment 1 of the present invention.

Fig. 3 is a schematic top view of another embodiment of the filter of the present invention.

Fig. 4 is a schematic partial structural view of the filter film according to embodiment 2 of the present invention.

Fig. 5 is a schematic partial structural view of the filter film according to embodiment 3 of the present invention.

Fig. 6 is a schematic partial structural view of the filter film according to embodiment 4 of the present invention.

Fig. 7 is a schematic partial structural view of the filter film according to embodiment 5 of the present invention.

In the figure:

100. a substrate; 200. a light filtering film; 210. a full-color region; 220. a color mixing area; 221. a transverse plane; 222. a longitudinal plane.

Detailed Description

The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Example 1

As shown in fig. 1 and fig. 2, a gradient filter includes a transparent substrate 100 and a filter 200 covering the substrate 100, wherein the filter 200 has a linear color mixing region 220, and the thickness of the filter 200 in the color mixing region 220 is gradually changed.

In this embodiment, the stage lighting light beam enters the filter 200 through the transparent substrate 100, and the color change is realized by the filtering function of the filter 200, where the larger the thickness of the filter 200 is, the darker the color of the filtered light beam is, and the smaller the thickness is, the lighter the color of the filtered light beam is. Due to the uneven thickness of the filter film 200 in the color mixing region 220, the color of the light beam passing through the color mixing region 220 is projected and then shows different colors. Compared with the method of directly realizing the linear color change of the filter film 200 by the perforation density method, the method of realizing the linear color change of the color by gradually changing the thickness of the color mixing area 220 by adopting the laser film cutting technology does not generate the moire phenomenon in the color mixing process of the gradual-changing type filter.

Optionally, a laser film cutting technique is adopted to gradually thicken the thickness of the filter film 200 in the color mixing region 220 from one side to the other side, so that the color gradually becomes dark, the color change is relatively gentle, and the visual sense of people shows a linear change.

Optionally, when the color mixing region 220 is a circle, the thickness of the filter film 200 gradually increases from the circumferential position of the circle to the center of the circle, and the color of the light beam projected from the color mixing region 220 linearly increases from the circumference to the center of the circle.

Optionally, when the thickness of the filter film 200 in the color mixing region 220 gradually increases from two sides to the middle, the color of the light beam projected from the color mixing region 220 linearly changes from light to dark to light.

Alternatively, the thickness of the filter 200 in the color mixing region 220 may be directly processed according to the thickness variation of the filter 200 simulated in the design process, and the thickness requirement of the filter 200 in the color mixing region 220 is not required to be met by laser cutting.

Preferably, the substrate 100 is made of a material with high light transmittance, less light loss and high temperature resistance, and in this embodiment, a transparent glass material is preferred, which has a lower cost than other materials.

As shown in fig. 2, the color mixing region 220 is a semicircle, and the straight edge of the semicircle is located at the edge of the filter film 200. The shape of color mixing area 220 and the shape of stage lighting source light outlet are adapted, the straight edge of the semicircle is located at the edge position of the filter film 200, so that when the color mixing area 220 is initially cut into the light beam, the area of the color mixing area 220 is large enough to filter all the light beams passing through the filter.

Alternatively, the color mixing area 220 may be semi-elliptical or other shape that matches the shape of the stage lighting source light outlet.

In this embodiment, the filter film 200 in the color mixing region 220 is step-shaped, and includes a plurality of transverse surfaces 221 sequentially arranged and a longitudinal surface 222 connecting two adjacent transverse surfaces 221, and the longitudinal surface 222 and the transverse surface 221 are arranged in an arc shape deviating from the straight edge of the semicircle. The transverse surface 221 is substantially parallel to the substrate 100, and the longitudinal surface 222 is substantially perpendicular to the substrate 100, so that the color mixing region 220 can be formed to have a linearly gradually changing thickness by performing scanning cutting a plurality of times with laser light substantially perpendicular to the filter 200 during laser cutting, and the manufacturing is simpler. As shown in fig. 2, the straight sides of the longitudinal surface 222 and the transverse surface 221, which are away from the semicircle, are arranged in an arc shape, the projection in the light beam direction is a concentric arc with the center of the straight side being a circle, and the projection is matched with the shape of the stage light source light outlet, so that compared with the projection of the longitudinal surface 222 and the transverse surface 221 in the light beam direction shown in fig. 3, which is in a stripe shape parallel to the straight side, when the gradient filter is cut into the light path, the color mixing is more uniform.

Optionally, the thickness of the semicircular straight edge is smaller than that of the semicircular arc-shaped edge, and when the optical filter is cut into the light path, the color of the light beam gradually changes from shallow to deep, and is more natural and cannot suddenly change into a deep color.

In this embodiment, the side of the filter film 200 away from the substrate 100 in the color mixing region 220 is a flat slope. The color mixing area 220 is more natural in color mixing, the gradient of color mixing is relieved, and the color conversion shows complete linear change.

In this embodiment, the filter 200 further includes a full color region 210 with a uniform film thickness, and the thickness of the filter 200 in the full color region 210 is equal to the maximum thickness of the filter 200 in the color mixing region 220. The thickness of the filter film 200 in the full color region 210 is uniform, so that the color of the light beam passing through the full color region 210 is the same after being projected. The thickness of the filter film 200 in the panchromatic region 210 is equal to the maximum thickness of the filter film 200 in the color mixing region 220, so that when the color of the light beam changes from the color mixing region 220 to the panchromatic region 210, the color change gradient is relatively gentle, the color change does not change suddenly, and the color change shows uniform and gradual change when seen by naked eyes of people; the color mixing region 220 with the gradual thickness of the filter 200 is formed by cutting off the film layers with different thicknesses by laser, and the panchromatic region 210 is formed by retaining the original thickness of the filter 200 outside the color mixing region 220.

In this embodiment, there is also provided a stage lamp comprising any one of the above gradient filters, wherein the filter is a CMY filter, an RGB filter, a color temperature filter, a color rendering index filter, or a color filter. The CMY film is generally cyan, magenta or yellow, and changes the color of light beams passing through the CMY film by adopting a subtractive color mixing mode; the RGB plates are generally red, green or blue, and the color of the light beams passing through the RGB plates is changed by adopting an additive color mixing mode; the color temperature sheet changes the color temperature of the light beam passing through the color temperature sheet; the color rendering index sheet changes the color rendering index of the light beam passing through the color rendering index sheet; the color sheet sets specific colors according to actual requirements, and light beams passing through the color sheet can project corresponding colors. The same or different light filter combinations are set according to actual requirements, so that the color rendering effect of the stage lamp is richer. For example, a plurality of the filter combinations may be a combination of the CMY patch and the chroma patch, or the RGB patch and the chroma patch, or the chroma patch and the color rendering index, or other gradually changing filters that may produce a stage color rendering.

Preferably, the optical filters are CMY sheets or RGB sheets, when there are 2 optical filters arranged in a staggered manner from top to bottom, if the 2 optical filters are completely closed, all the light emitted from the stage lighting source light outlet should pass through the color mixing region 220 to mix light and enter other optical elements behind the color mixing region; if 2 of the filters are in the fully open state, the filters should be in a state of not blocking the light beam.

Example 2

As shown in fig. 4, the transverse plane 221 is perpendicular to the longitudinal plane 222. Since the thickness of the filter 200 is very thin, typically 1 to 2 μm, and the transverse plane 221 is perpendicular to the longitudinal plane 222, it is easy to perform a scanning cutting process with a laser for a plurality of times.

Preferably, the widths of two adjacent transverse surfaces 221 are the same, so that the widths of the color mixing region 220 that vary in the same thickness region of the filter 200 are the same, the heights of two adjacent longitudinal surfaces 222 are the same, and the thicknesses of the color mixing region 220 that are adjacent to the filter 200 vary uniformly. When the filter film 200 moves at a constant speed, the thickness of the color mixing region 220 changes linearly, and a sudden jump is not generated.

Example 3

As shown in fig. 5, the transverse plane 221 is obliquely disposed, the longitudinal plane 222 is perpendicular to the substrate 100, and the height of the transverse plane 221 near the color mixing region 220 where the thickness is thicker is higher than the height of the transverse plane 221 near the color mixing region 220 where the thickness is thinner, so that the thickness of the filter 200 on the same transverse plane 221 can be changed slowly, thereby enhancing the gradient performance of the color mixing region 220.

Example 4

As shown in fig. 6, the longitudinal surface 222 is disposed obliquely, the transverse surface 221 is disposed parallel to the substrate 100, and a distance between a side of the longitudinal surface 222 away from the substrate 100 and a side of the color mixing region 220 with a thicker thickness is smaller than a distance between a side of the longitudinal surface 222 close to the substrate 100 and a side of the color mixing region 220 with a thicker thickness, so that the thickness of the filter 200 changes from one step to another step as smoothly as possible without being too abrupt.

Example 5

As shown in fig. 7, the transverse plane 221 and the longitudinal plane 222 are inclined at the same time, and the height of the transverse plane 221 near the mixed color region 220 where the thickness is thicker is higher than that near the mixed color region 220 where the thickness is thinner; the distance between the side of the longitudinal surface 222 away from the substrate 100 and the thicker side of the color mixing region 220 is smaller than the distance between the side of the longitudinal surface 222 close to the substrate 100 and the thicker side of the color mixing region 220, and the angle of the connection part of the transverse surface 221 and the longitudinal surface 222 is 180 degrees or close to 180 degrees, so that the color change of the light beam is closer to linear change.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The gradual change type optical filter is characterized by comprising a transparent substrate (100) and a filter film (200) covering the substrate (100), wherein the filter film (200) is provided with a linear color mixing area (220), and the thickness of the filter film (200) in the color mixing area (220) is gradually changed.

2. The gradual filter of claim 1, wherein the color mixing region (220) is a semi-circle, and a straight side of the semi-circle is located at an edge position of the filter film (200).

3. The gradual filter according to claim 2, wherein the filter film (200) of the color mixing region (220) is stepped and comprises a plurality of transverse surfaces (221) sequentially arranged and a longitudinal surface (222) connecting two adjacent transverse surfaces (221), and the longitudinal surface (222) and the transverse surface (221) are arranged in an arc shape away from the straight edge of the semicircle.

4. The gradual filter according to claim 1, wherein the filter film (200) of the color mixing region (220) is stepped and comprises a plurality of transverse faces (221) arranged in sequence and a longitudinal face (222) connecting two adjacent transverse faces (221).

5. A graded filter as claimed in claim 4, wherein the lateral faces (221) are perpendicular to the longitudinal faces (222).

6. A graded filter as claimed in claim 4, wherein the lateral faces (221) are obliquely arranged.

7. A graded filter as claimed in claim 4, wherein the longitudinal faces (222) are obliquely arranged.

8. The graded filter according to claim 1, wherein the side of the filter film (200) of the color mixing region (220) facing away from the substrate (100) is a flat slope.

9. The graded filter of claim 1, wherein the filter (200) further comprises a full color region (210) having a uniform film thickness, the filter (200) thickness of the full color region (210) being equal to a maximum thickness of the filter (200) in the color mixing region (220).

10. A stage lamp comprising the graded filter of any one of claims 1 to 9, wherein the filter is a CMY sheet, an RGB sheet, a color temperature sheet, a color rendering index sheet or a color sheet.