Geometric light guide column and photoflood lamp assembly

Abstract

The geometric light guide column comprises a body, a light inlet part and a light outlet part, the body is connected in a surrounding mode to form an isosceles trapezoid face and an isosceles triangle face, the isosceles trapezoid face comprises a first bottom edge, a second bottom edge and a first waist edge, and the isosceles triangle face comprises a third bottom edge and a second waist edge. The first waist edge and the second waist edge coincide; the light inlet part is located at one end of the body, a regular hexagon surface is formed on the light inlet part, the side length of the regular hexagon surface coincides with the first bottom edge and the third bottom edge, and the regular hexagon surface is used for receiving a light source; the light emitting part is located at the other end of the body, a regular triangle face is formed on the light emitting part, the side length of the regular triangle face coincides with the second bottom edge, and the regular triangle face is used for guiding out light. According to the geometric light guide column, through geometric transformation of the shape of the geometric light guide column, the refraction structure in light rays is improved, then refraction of the light rays is converged and contracted, and the problem that the light emitting angle of multicolor mixed light is difficult to shrink is solved.

Description

Technical Field

[0001] This invention relates to the field of photographic lighting technology, and more particularly to a geometric light guide column and photographic lighting assembly. Background Technology

[0002] Multicolor composite spectra can provide a better lighting experience. Compared to chips and phosphors, which can only emit light with a fixed spectrum, multicolor composite spectra have the advantages of variable spectrum and better simulation of solar light. In the photography industry, simulating realistic scene effects through multicolor composite light is a very important application. However, it is difficult to mix multicolor light to synthesize light at a small angle. The traditional method is to place multicolor light sources at the bottom of a large light guide column, use the light guide column to narrow the angle of the light, and mix the colors.

[0003] In traditional technology, an RGBW color mixing light guide column includes a column body, a light-transmitting block at the top of the column body for emitting light, an RGBW four-color LED at the bottom of the column body, a sloping side of the column body with an inclined angle, and a cross-sectional dimension of the column body that gradually decreases from top to bottom. Inside the column body are transparent beads for refracting light. The refractive index of the column body is different from that of the transparent beads. The transparent beads are ellipsoidal and are arranged inside the column body in an alternating horizontal and vertical arrangement from top to bottom. One end of the light-transmitting block is connected to the column body, and the other end is provided with a micro compound eye for emitting light.

[0004] Another type of light guide column assembly that can mix and collect light includes: an LED module, which is a four-color LED module composed of R, G, B and W, used for emitting multi-color light sources; a control module, connected to the LED module, used to control the adjustment of the multi-color light sources of the LED module; and a light guide column, set in front of the LED module, which mixes the multi-color light sources emitted by the LED module into a unified light.

[0005] However, traditional light guide pillars suffer from complex light guiding structures and difficulties in controlling the light emission angle. Therefore, it is necessary to solve the problem of reducing the light emission angle of multi-color mixed light. Summary of the Invention

[0006] The first objective of this invention is to provide a geometric light guide post that aims to solve the problem of reducing the emission angle of multicolor mixed light.

[0007] To solve the above technical problems, a geometric light guide column is provided, comprising a body, a light-inlet section, and a light-outlet section. The body is formed by connecting an isosceles trapezoidal surface and an isosceles triangular surface. The isosceles trapezoidal surface includes a first base, a second base, and a first side. The isosceles triangular surface includes a third base and a second side. The first side and the second side coincide. The light-inlet section is located at one end of the body and is formed with a regular hexagonal surface. The side lengths of the regular hexagonal surface coincide with the first base and the third base, respectively. The regular hexagonal surface is used to receive light sources. The light-outlet section is located at the other end of the body and is formed with an equilateral triangular surface. The side lengths of the equilateral triangular surface coincide with the second base, respectively. The equilateral triangular surface is used to guide light.

[0008] Furthermore, the two second waist sides are provided with a converging angle, which abuts against one corner of the equilateral triangle face.

[0009] Furthermore, the length of the first base is less than that of the second base, so that the isosceles trapezoidal surface diverges from the light-inlet portion to the light-outlet portion, and the convergence angle abuts against one corner of the equilateral triangle surface, so that the isosceles triangle surface converges from the light-inlet portion to the light-outlet portion.

[0010] Furthermore, the area of ​​the regular hexagonal face is smaller than that of the equilateral triangle.

[0011] Furthermore, let a be the angle between the regular hexagonal surface and the isosceles trapezoidal surface, and b be the angle between the regular hexagonal surface and the isosceles triangular surface, satisfying the following relationships: 91.31°≤a≤93.31°; 95.73°≤b≤97.73°.

[0012] Furthermore, let the side length of the regular hexagonal face be l, the height of the regular hexagonal face to the equilateral triangle face be h, and the side length of the equilateral triangle face be d, satisfying the relationship: l:h:d=13:300:81.

[0013] Furthermore, let c be the maximum deviation angle of the rays emanating from the equilateral triangle, where c ≤ 45°.

[0014] Furthermore, let t be the angle of convergence of the two second sides of the isosceles triangle, where t = 2.46°.

[0015] Furthermore, let f be the angle between the second base and the first waist, where f = 83.55°.

[0016] Furthermore, let the length of the first waist be s, which satisfies the relationship: l:h:d:s=13:300:81:302.

[0017] The second objective of this invention is to provide a photographic light assembly that addresses the problem of reducing the output angle of mixed light in photographic lights.

[0018] To solve the above-mentioned technical problems, a photographic light assembly is provided, including the aforementioned geometric light guide column, LED beads, and light-transmitting plate, wherein the LED beads are attached to the regular hexagonal surface, and the equilateral triangular surface abuts against a portion of the light-transmitting plate.

[0019] Furthermore, the regular hexagonal surface is tightly and softly attached to the surface of the lamp bead.

[0020] Furthermore, at least six of the geometric light guide pillars are connected in parallel at the light-transmitting plate, so that each of the equilateral triangular faces forms a hexagonal face at the light-transmitting plate.

[0021] Implementing the embodiments of the present invention will have the following beneficial effects:

[0022] In this embodiment, the geometric light guide column has an isosceles trapezoidal surface and an isosceles triangular surface surrounding the main body. The isosceles trapezoidal surface includes a first base, a second base, and a first side, while the isosceles triangular surface includes a third base and a second side. The first and second sides coincide. The light-inlet portion forms a regular hexagonal surface, with the side lengths of the regular hexagonal surface coinciding with the first and third bases, respectively. The regular hexagonal surface is used to receive the light source. The light-outlet portion forms an equilateral triangular surface, with the side lengths of the equilateral triangular surface coinciding with the second base, respectively. The equilateral triangular surface is used to guide the light. Thus, through the geometric transformation of the shape of the geometric light guide column, the internal refraction structure of the light is improved, thereby causing the light to refract and contract inward, overcoming the problem of reducing the output angle of multi-color mixed light in traditional technology.

[0023] In the photographic light assembly of this embodiment, since the LED beads are attached to the regular hexagonal surface and the equilateral triangular surface abuts against part of the light-transmitting plate, the light loss can be reduced when the light source of the LED beads passes through the geometric light guide column in this case, and the deflection of the output angle of the mixed light of the photographic light can be reduced. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the first state of the photographic light assembly according to Embodiment 2 of the present invention;

[0026] Figure 2 A schematic diagram of the second state of the photographic light assembly according to Embodiment 2 of the present invention;

[0027] Figure 3 This is a schematic diagram of the geometric light guide column from a first perspective according to Embodiment 1 of the present invention;

[0028] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0029] Figure 5 This is a schematic diagram of the geometric light guide column from a second perspective according to Embodiment 1 of the present invention;

[0030] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0031] Figure 7 This is a front view of the geometric light guide column according to Embodiment 1 of the present invention;

[0032] Figure 8 for Figure 7 Sectional view at CC;

[0033] Figure 9 The test diagram shows the light passing through the light guide column in traditional technology;

[0034] Figure 10 for Figure 9 Simulation diagram of the light output range of the central light guide column;

[0035] Figure 11 This is a test diagram showing the light passing through the geometric light guide column of the present invention;

[0036] Figure 12 for Figure 11 Simulation diagram of the light output range of the geometric light guide post.

[0037] Among them: 10, photographic light assembly; 100, geometric light guide column; 110, body; 111, isosceles trapezoidal surface; 1111, first base; 1112, second base; 1113, first waist; 112, isosceles triangular surface; 1121, third base; 1123, second waist; 1124, convergence angle; 120, light-inlet section; 121, regular hexagonal surface; 130, light-outlet section; 131, equilateral triangular surface; 200, LED bead; 300, light-transmitting plate; 310, hexagonal surface. Detailed Implementation

[0038] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0039] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Example 1

[0042] Please refer to Figures 3-12 Embodiment 1 of the present invention provides a geometric light guide column 100, including a body 110, a light-inlet portion 120, and a light-outlet portion 130. The body 110 is formed by an isosceles trapezoidal surface 111 and an isosceles triangular surface 112 that are connected in a ring. The isosceles trapezoidal surface 111 includes a first base 1111, a second base 1112, and a first side 1113. The isosceles triangular surface 112 includes a third base 1121 and a second side 1123. The first side 1113 and the second side 1123... The light-inlet section 120 is located at one end of the body 110. The light-inlet section 120 forms a regular hexagonal surface 121. The sides of the regular hexagonal surface 121 coincide with the first base side 1111 and the third base side 1121, respectively. The regular hexagonal surface 121 is used to receive the light source. The light-outlet section 130 is located at the other end of the body 110. The light-outlet section 130 forms an equilateral triangle surface 131. The sides of the equilateral triangle surface 131 coincide with the second base side 1112, respectively. The equilateral triangle surface 131 is used to radiate the light. In specific applications, the body 110 is formed by an isosceles trapezoidal surface 111 and an isosceles triangular surface 112. The isosceles trapezoidal surface 111 includes a first base 1111, a second base 1112, and a first side 1113. The isosceles triangular surface 112 includes a third base 1121 and a second side 1123. The first side 1113 and the second side 1123 coincide. The light-inlet portion 120 forms a regular hexagonal surface 121. The sides of the regular hexagonal surface 121 coincide with the first base 1111 and the third base 1121, respectively. The regular hexagonal surface 121 is used to receive the light source. The light-outlet portion 130 forms an equilateral triangular surface 131. The sides of the equilateral triangular surface 131 coincide with the second base 1112, respectively. The equilateral triangular surface 131 is used to guide the light. Thus, the light undergoes a geometric transformation through the geometric light guide column 100, improving the internal refraction structure of the light, thereby causing the refraction of the light to converge and shrink, reducing the range of the emitted light deflection of the mixed light.

[0043] In one possible implementation, the two second waist edges 1123 are provided with a convergence angle 1124, which abuts against one corner of the equilateral triangular face 131. In specific applications, in order to improve the convergence uniformity while enhancing the inward contraction of the light guide column, the two second waist edges 1123 are provided with a convergence angle 1124, which abuts against one corner of the equilateral triangular face 131. This causes the light entering the regular hexagonal face 121 to gradually reduce the reflection on the side of the isosceles triangular face, thereby causing the light to eventually contract and converge into the light-emitting surface of the equilateral triangle, reducing the light deflection range of the mixed light.

[0044] In one possible implementation, the length of the first base 1111 is less than that of the second base 1112, so that the isosceles trapezoidal surface 111 diverges from the light-inlet portion 120 to the light-outlet portion 130, and the convergence angle 1124 abuts against one corner of the equilateral triangle surface 131, so that the isosceles triangle surface 112 converges from the light-inlet portion 120 to the light-outlet portion 130. In specific applications, since the length of the first base 1111 is less than that of the second base 1112, the isosceles trapezoidal surface 111 gradually diverges from the light-inlet portion 120 to the light-outlet portion 130. This can enhance Raman scattering of light on the isosceles trapezoidal surface 111. Raman scattering refers to the energy transfer between molecules and photons in a sample surface when a laser of a certain frequency irradiates the sample surface, causing changes in the vibrational state (e.g., the wobbling and twisting of atoms, the wobbling and vibration of chemical bonds) in different ways and to different degrees, and then scattering light of different frequencies. The frequency change is determined by the characteristics of the scattering material. Different types of atomic groups vibrate in a unique way, thus producing scattered light with a specific difference from the incident light frequency. Its spectrum is called the "fingerprint spectrum". The type of molecules that make up the material can be identified according to this principle, so that the frequency of the light changes continuously and better matches the natural light. Since the convergence angle 1124 abuts against one corner of the equilateral triangle surface 131, the isosceles triangle surface 112 converges from the light-inlet part 120 to the light-outlet part 130. This allows the scattered light from the isosceles trapezoidal surface 111 to gradually contract, thereby allowing the geometric light guide column 100 to better reduce the light deflection range of the frequency-converted mixed light.

[0045] In one possible implementation, the area of ​​the regular hexagonal surface 121 is smaller than the area of ​​the equilateral triangle surface. In specific applications, because the area of ​​the regular hexagonal surface 121 is smaller than the area of ​​the equilateral triangle surface, the light emitted after passing through the geometric light guide post 100 increases in light emission area while decreasing in light emission deflection angle.

[0046] In one possible implementation, let 'a' be the angle between the regular hexagonal surface 121 and the isosceles trapezoidal surface 111, and let 'b' be the angle between the regular hexagonal surface 121 and the isosceles triangular surface 112, satisfying the relationships: 91.31°≤a≤93.31°; 95.73°≤b≤97.73°. In specific applications, to increase the light output range of the geometric light guide 100 and reduce the deflection angle of the light within the geometric light guide 100, let 'a' be the angle between the regular hexagonal surface 121 and the isosceles trapezoidal surface 111, and 'b' be the angle between the regular hexagonal surface 121 and the isosceles triangular surface 112, satisfying the relationships: 91.31°≤a≤93.31°; 95.73°≤b≤97.73°. This allows the geometric light guide 100 to both increase the light output range and reduce the deflection angle of the emitted light.

[0047] In one possible implementation, let the side length of the regular hexagonal surface 121 be l, the height from the regular hexagonal surface 121 to the equilateral triangle surface 131 be h, and the side length of the equilateral triangle surface 131 be d, satisfying the relationship: l:h:d = 13:300:81. In specific applications, among light guide columns with the same adjustable light range, the general structure has a larger volume, resulting in a larger device volume for installing the existing light guide column. Therefore, let the side length of the regular hexagonal surface 121 be l, the height from the regular hexagonal surface 121 to the equilateral triangle surface 131 be h, and the side length of the equilateral triangle surface 131 be d, satisfying the relationship: l:h:d = 13:300:81, thereby optimizing the light output range, deflection angle, and volume reduction of the geometric light guide column 100.

[0048] In one possible implementation, the maximum deviation angle of the light rays from the equilateral triangle is denoted as c, where c ≤ 45°. In specific applications, compared to the light guide column in conventional techniques, refer to... Figure 10 and Figure 11 It can be seen that the light deflection angle range of the light emitted from the light guide post is above 60°, while the deflection angle range of the light emitted from the equilateral triangular face in this case is below 45°. Therefore, through experimental comparison and analysis, it can be concluded that the geometric light guide post 100 in this case has a better light deflection range than the light guide post in the traditional technology.

[0049] In one possible implementation, the convergence angle 1124 of the two second sides 1123 of the isosceles triangular surface 112 is denoted as t, where t = 2.46°. In specific applications, the convergence angle 1124 of the two second sides 1123 of the isosceles triangular surface 112 of the geometric light guide column 100 in this case is t. Ideally, the convergence angle 1124t is infinitely close to zero degrees, while the convergence angle 1124 obtained by the grinding and polishing process is 2.46°. This ensures that the light entering from the regular hexagonal surface 121 is gradually reflected less on the side of the isosceles triangular surface, thereby causing the light to eventually converge into the light-emitting surface of the equilateral triangle, reducing the light deflection range of the mixed light.

[0050] In one possible implementation, the angle between the second base 1112 and the first waist 1113 is denoted as f, where f = 83.55°. In a specific application, the angle between the second base 1112 and the first waist 1113 of the geometric light guide column 100 in this case is f. The angle f obtained through the grinding and polishing process is 83.55°, thereby ensuring that the isosceles trapezoidal surface 111 gradually diverges from the light-inlet portion 120 to the light-outlet portion 130, so that the light is enhanced by Raman scattering on the isosceles trapezoidal surface 111, and the frequency of the light changes continuously, which better matches the natural light.

[0051] In one possible implementation, the length of the first waist side 1113 is denoted as s, satisfying the relationship: l:h:d:s = 13:300:81:302. In specific applications, since the length of the first waist side 1113 is s, when the relationship: l:h:d:s = 13:300:81:302 is satisfied, the geometric requirements of the light guide column in this case can be met.

[0052] Example 2

[0053] This embodiment differs from the subject matter protected in Embodiment 1, specifically in the following ways:

[0054] Please refer to Figures 1-12 Embodiment 2 of the present invention provides a photographic light assembly 10, including the above-mentioned geometric light guide column 100, lamp bead 200 and light-transmitting plate 300. The lamp bead 200 is attached to the regular hexagonal surface 121 and the equilateral triangular surface 131 abuts against a portion of the light-transmitting plate 300. In specific applications, the photographic light assembly 10 includes a geometric light guide column 100, LED beads 200, and a light-transmitting plate 300. The LED beads 200 are attached to the regular hexagonal surface 121, and the equilateral triangular surface 131 abuts against a portion of the light-transmitting plate 300. Multiple geometric light guide columns 100 surround and abut against different surfaces of the LED beads 200. The LED beads 200 emit light of different colors to illuminate the regular hexagonal surface 121 of the light guide column. Then, the equilateral triangular surface 131 of the geometric light guide column 100 abuts against the light-transmitting plate 300, allowing the light from the light guide column to enter the light-transmitting plate 300. In this way, the light from the photographic light increases the light output range and reduces the light output angle through the geometric light guide column 100.

[0055] In one possible implementation, the regular hexagonal surface 121 is softly and tightly bonded to the surface of the LED bead 200. Specifically, to reduce light loss within the photographic lamp, it's worth noting that existing light guide pillars are generally made of glass, and the gap between the light guide pillar and the LED bead 200 causes light loss. However, the geometric light guide pillar 100 in this case is made of silicone. Because the high-power LED bead 200 generates heat, the silicone surface softens, allowing the regular hexagonal surface 121 to soften and tightly bond to the surface of the LED bead 200, thereby eliminating the gap between the LED bead 200 and the surface of the geometric light guide pillar 100, and thus reducing light loss from the LED bead 200 to the geometric light guide pillar 100.

[0056] In one possible implementation, at least six geometric light guide pillars 100 are spliced ​​together at the light-transmitting plate 300, so that each equilateral triangular facet 131 forms a hexagonal facet 310 at the light-transmitting plate 300. In specific applications, when six geometric light guide pillars 100 are spliced ​​together at the light-transmitting plate 300, for example… Figure 1 In the illustrated state of the photographic light assembly 10, the sides of each equilateral triangular face 131 can overlap in pairs, thus forming a hexagonal face 310 at the light-transmitting plate 300. This improves the space utilization within the photographic light assembly 10. Furthermore, it is worth noting that when multiple geometric light guide pillars 100 are joined together at the light-transmitting plate 300, for example… Figure 2 The state of the photographic light assembly 10 shown is that of 24 geometric light guide pillars 100 spliced ​​together. The sides of each equilateral triangular face 131 overlap with each other, thus splicing an approximately circular polygonal face at the light-transmitting plate 300, which further improves the diversity of mixed light while reducing the space occupied by the photographic light assembly 10.

[0057] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A geometric light guide, characterized by, Comprising: a body formed by an isosceles trapezoidal face and an isosceles triangular face connected, the isosceles trapezoidal face comprising a first base, a second base and a first leg, the isosceles triangular face comprising a third base and a second leg, the first leg and the second leg coinciding; a light inlet part located at one end of the body, the light inlet part forming a regular hexagonal face, the edges of the regular hexagonal face coinciding with the first base and the third base respectively, the regular hexagonal face being used to receive a light source; a light outlet part located at the other end of the body, the light outlet part forming a regular triangular face, the edges of the regular triangular face coinciding with the second base respectively, the regular triangular face being used to guide light.

2. A geometric light guide according to claim 1, characterized in that Two of the second legs are provided with a converging angle, which abuts one corner of the regular triangular face.

3. A geometric light guide according to claim 2, characterised in that, The length of the first base is smaller than that of the second base, so that the isosceles trapezoidal face diverges from the light inlet part to the light outlet part, and the converging angle abuts one corner of the regular triangular face, so that the isosceles triangular face converges from the light inlet part to the light outlet part.

4. A geometric light guide according to any one of claims 1-3, characterised in that The area of the regular hexagonal face is smaller than that of the regular triangular face.

5. The geometric light guide according to claim 1, wherein Let the angle between the regular hexagonal face and the isosceles trapezoidal face be a, and the angle between the regular hexagonal face and the isosceles triangular face be b, satisfying the relationship: 91.31°≤a≤93.31°; 95.73°≤b≤97.73°.

6. A geometric light guide according to claim 5, characterized in that Let the side length of the regular hexagonal face be l, the height from the regular hexagonal face to the regular triangular face be h, and the side length of the regular triangular face be d, satisfying the relationship: l:h:d=13:300:

81.

7. A geometric light guide according to claim 6, characterized in that Let the maximum deviation angle of the light guided by the regular triangular face be c, wherein c≤45°.

8. A geometric light guide according to claim 2, characterized in that Let the converging angle of the two second legs of the isosceles triangular face be t, wherein t=2.46°.

9. A geometric light guide according to claim 8, characterized in that Let the angle between the second base and the first leg be f, wherein f=83.55°.

10. A geometric light guide according to claim 5, characterized in that Let the length of the first leg be s, satisfying the relationship: l:h:d:s=13:300:81:

302.

11. A photographic light assembly, characterized by Comprising the geometric light guide column, the lamp bead and the light transmission plate according to any one of claims 1-10, the lamp bead is attached to the regular hexagonal face, and the regular triangular face abuts part of the light transmission plate.

12. The photographic lamp assembly of claim 11, wherein, The regular hexagonal face is closely attached to the surface of the lamp bead.

13. The photographic lamp assembly of claim 11, wherein, At least six geometric light guide columns are spliced at the light transmission plate, so that each regular triangular face splices a hexagonal face at the light transmission plate.

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