Method for determining cross-sectional profile of lampshade and high-intensity full-spectrum fill light set

Abstract

The present application provides a method for determining the cross-sectional profile of a lampshade and a high-intensity full-spectrum fill-in light set, the high-intensity full-spectrum fill-in light set comprising: a housing, a first reflector; a lamp holder is provided at the bottom of the housing for mounting a halogen lamp; a lampshade is provided above the lamp holder, a first curved portion and a second curved portion are provided on the corresponding two sides of the lampshade, the first curved portion and the second curved portion are symmetrically arranged to form a parabolic profile, the first curved portion and the second curved portion include a first surface close to the halogen lamp; the first reflector is pressed onto the first surface of the first curved portion and the second curved portion to form a third curved portion, wherein the third curved portion includes a third surface away from the first surface, the third curved portion is a parabolic profile, and is used to reflect the emitted light of the halogen lamp into parallel light. The fill-in light set composed of multiple halogen lamps is difficult to focus as a fill-in light and the problem of uniform light intensity and spectrum is solved. The present application also provides a method for determining the cross-sectional profile of a lampshade.

Description

Technical Field

[0001] The present application relates to the technical field of plant fill light, and in particular to a method for determining a lampshade cross-sectional profile and a high-intensity full-spectrum fill light group. Background Art

[0002] Hyperspectral imaging is becoming more and more popular in agricultural automation and high-throughput measurement, and has been widely used in track-mounted, vehicle-mounted, and airborne high-throughput phenotyping platforms. However, in practice, it is found that for near-ground high-throughput phenotyping measurements, an experiment often lasts for several hours, and the measurement using sunlight as the light source is greatly affected by the intensity and spectral changes of sunlight, which brings great trouble to subsequent data analysis.

[0003] Since the current LED technology cannot provide high-power continuous full-spectrum light (300nm~5000nm band), the consensus of scientists is to use incandescent bulbs or halogen bulbs (hereinafter referred to as halogen lamps) to supplement the light to obtain a high-intensity full-spectrum similar to sunlight, which is particularly suitable for measurements under shading conditions or at night. However, halogen lamps generate a lot of heat and are difficult to focus, especially the near-infrared band (800nm~5000nm), where the focusing efficiency is low. For mobile phenotyping based on push-broom hyperspectral imaging technology, in order to achieve the required light intensity, it is often necessary to configure a large number of high-power halogen lamps very close to the canopy. Not only is the equipment cumbersome and bulky, but also because the height of the canopy of plants in the field varies greatly, it is very easy for the halogen lamp to directly contact the canopy and burn the canopy when moving the hyperspectral sensor and the supplementary light. Summary of the invention

[0004] In view of this, the purpose of this application is to propose a method for determining a high-intensity full-spectrum fill light group and a lampshade cross-sectional profile that is convenient for heat dissipation, near-parallel light reflection, and good focusing effect, suitable for mobile hyperspectral phenotyping measurement, and at the same time meets the requirements of small light intensity and spectrum changes.

[0005] Based on the above objectives, in a first aspect, the present application provides a method for determining a cross-sectional profile of a lampshade, the method comprising:

[0006] Determine the tungsten filament of the halogen lamp as the coordinate origin of the third surface of the first reflector, and determine the curve function of the third surface of the first reflector ;

[0007] Determine the thickness H of the first reflective sheet;

[0008] A curve function based on the thickness H of the first reflector and the third surface of the first reflector , calculate the curve function of the fourth surface of the first reflector parametric equations;

[0009] Determine correction values ​​of the first surface of the first curved portion and the second curved portion of the lampshade;

[0010] A curve function based on the fourth surface of the first reflecting sheet The parameter equation and the correction value of the first surface of the first curved portion and the second curved portion of the lampshade are used to determine the contour function formed by the first surface of the first curved portion and the second curved portion of the lampshade. ;

[0011] According to the contour function Determine the cross-sectional profile of the lampshade.

[0012] In one embodiment, the curve function based on the thickness H of the first reflector and the third surface of the first reflector is , calculate the curve function of the fourth surface of the first reflector The parametric equation is calculated using the following formula:

[0013]

[0014] In the formula, is the coordinate, for The first derivative of ;

[0015] Corrected contour function for:

[0016]

[0017] in, , are correction values ​​of the first surfaces of the first curved surface portion and the second curved surface portion of the lampshade.

[0018] In one embodiment, the tungsten filament of the halogen lamp is determined as the coordinate origin of the third surface of the first reflector, and the curve function of the third surface of the first reflector is determined. , A typical implementation uses the following calculation:

[0019] ,in is the diameter of the third surface of the first reflecting sheet, The value range is -100~100.

[0020] In one embodiment, the parameter equation of the curve function based on the fourth surface of the first reflector is and the correction values ​​of the first surfaces of the first curved surface and the second curved surface of the lampshade, determine the contour function formed by the first surfaces of the first curved surface and the second curved surface of the lampshade, after calculation and adding the correction parameters, The calculation is done using the following formula:

[0021]

[0022] in, , are correction values ​​of the first surfaces of the first curved surface portion and the second curved surface portion of the lampshade.

[0023] In a second aspect, the present application provides a high-intensity full-spectrum fill light set, comprising: a housing and a first reflector;

[0024] The bottom end of the housing is provided with a lamp holder for mounting and fixing a halogen lamp;

[0025] The lamp holder cover is provided with a lamp cover, the lamp cover comprises a first curved surface portion and a second curved surface portion opposite to each other, the first curved surface portion and the second curved surface portion are symmetrically arranged to form a parabolic profile, and the first curved surface portion and the second curved surface portion both comprise a first surface close to the halogen lamp;

[0026] The first reflective sheet is pressed onto the first surface of the first curved surface portion and the second curved surface portion to form a third curved surface portion, wherein the third curved surface portion has a parabolic profile, wherein the third curved surface portion includes a third surface and a fourth surface, wherein the fourth surface is adhered to the first surface, and the third surface is used to reflect the emitted light of the halogen lamp into parallel light.

[0027] In one embodiment, the housing includes a first end and a second end, a plurality of lamp holders are arranged at equal intervals between the first end and the second end, and at least some of the lamp holders are provided with halogen lamps.

[0028] In one embodiment, the extension directions of the tungsten filaments of the halogen lamps are configured to extend from the first end to the second end, and the extension directions of the tungsten filaments of the halogen lamps are on the same straight line.

[0029] In one embodiment, a second reflector is wedge-shapedly disposed between the halogen lamps, and the second reflector is configured to focus the emitted light of the tungsten filament of the halogen lamp.

[0030] In one embodiment, the first reflective sheet is mirror aluminum produced by laser engraving process, and the mirror aluminum is configured to have a reflectivity of 90% to 98% and a near-infrared reflectivity of 90% to 95%.

[0031] In one embodiment, an isolation layer, a PCB circuit board and a support layer are sequentially provided between the bottom end of the lamp holder and the bottom end of the housing, wherein the PCB circuit board is electrically connected to the lamp holder.

[0032] In one embodiment, a cooling fan is provided at the first end and the second end of the shell, and the cooling fan is electrically connected to the PCB circuit board via a temperature sensor for intelligently cooling the halogen lamp and the shell.

[0033] In one embodiment, the shell and the lampshade are integrally formed, and a convection air duct is formed between the shell and the lampshade.

[0034] In one embodiment, a pressing tongue is provided above the connection ends between the first curved surface portion, the second curved surface portion and the shell, and the pressing tongue is provided with an embedding groove opening toward the first surface, and the first reflective sheet is inserted into the embedding groove.

[0035] It can be seen from the above that the present application has the following beneficial effects:

[0036] By using mirror aluminum as the first reflector to reflect the emitted light of the halogen lamp, the full spectrum of the emitted light of the halogen lamp (especially the near-infrared band of 800nm~5000nm) can be effectively reflected, and the first curved surface portion and the second curved surface portion of the lampshade are used as substrates, and the first reflector is pressed on the first curved surface portion and the second curved surface portion to form a third curved surface portion. The parabolic profile of the third curved surface portion focuses the reflected light of the mirror aluminum of the halogen lamp and focuses it into parallel light to effectively supplement the light for the plants. At the same time, the heat dissipation fans at the first end and the second end of the shell enable the heat dissipation fans on the lampshade to form wind flow inside the cavity of the shell, effectively dissipating the heat of the halogen lamp to achieve a good cooling effect; at the same time, the shell and the lampshade are integrally formed, and when in use, it can be effectively applied to outdoor humid environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 This is a schematic cross-sectional view of the housing and lampshade of an embodiment of the present application;

[0039] Figure 2 This is a schematic cross-sectional view of a lamp assembly according to an embodiment of the present application;

[0040] Figure 3 This is a schematic cross-sectional view of a housing and a lampshade according to another embodiment of the present application;

[0041] Figure 4 This is a cross-sectional schematic diagram of a lamp assembly according to another embodiment of the present application;

[0042] Figure 5 This is a schematic cross-sectional view of an embodiment of the present application;

[0043] Figure 6 It is a schematic perspective view of an embodiment of the present application;

[0044] Figure 7 This is a schematic diagram of the thickness of the first reflector in the embodiment of the present application;

[0045] Figure 8 This is a schematic diagram of the first reflector reflecting parallel light in an embodiment of the present application;

[0046] Fig. 9 This is a schematic diagram of parallel light reflected by a full-spectrum high-intensity fill light group according to an embodiment of the present application;

[0047] Fig.10 This is a front cross-sectional view of the full-spectrum high-intensity fill light assembly according to an embodiment of the present application.

[0048] Description of the drawings: shell 1, first reflector 2, lamp holder 11, halogen lamp 12, lampshade 3, first end 101, second end 102, tungsten filament 121, second reflector 4, isolation layer 122, PCB board 123, support layer 124, cooling fan 5, pressing tongue 6, embedding groove 61, fan fixing hole 51, connector 7, first curved surface part 31, second curved surface part 32. DETAILED DESCRIPTION

[0049] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0050] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the present application provides a high-intensity full-spectrum fill light group, including: a shell 1, a first reflector 2, and a lamp holder 11; the lamp holder 11 is arranged at the bottom end of the shell 1, and is used to install a halogen lamp 12; the shell 1 is provided with a lampshade 3, and the lampshade 3 is provided with a first curved surface portion 31 and a second curved surface portion 32 on two corresponding sides, the first curved surface portion 31 and the second curved surface portion 32 are symmetrically arranged to form a parabolic profile, and the first curved surface portion 31 and the second curved surface portion 32 include a first surface close to the halogen lamp 12; the first reflector 2 is pressed on the first surface of the first curved surface portion 31 and the second curved surface portion 32 to form a third curved surface portion, wherein the third curved surface portion includes a third surface away from the first surface, and the third curved surface portion is a parabolic profile, which is used to reflect the emitted light of the halogen lamp 12 as parallel light.

[0052] In order to overcome the problem of the difficulty in focusing the halogen lamp 12 in the related art, the cross section of the lampshade 3 is made into a parabola shape, and the housing 1 provides support for the lampshade 3. The halogen lamp 12 is arranged at the bottom end of the lampshade 3, that is, at the connection between the first curved surface portion 31 and the second curved surface portion 32, and the first reflector 2 is arranged on the first surface of the first curved surface portion 31 and the second curved surface portion 32. It should be noted that the first surface of the first curved surface portion 31 and the second curved surface portion 32 is as follows: Figure 1 The first curved surface 31 and the second curved surface 32 are formed on the upper surface of the reflector. The function of the reflector is to use the lampshade 3 to form a parabolic profile as a basis. After the reflector is attached to the lampshade 3, the third surface is as shown in FIG. Figure 2 The upper surface of the first reflective sheet 2 can converge and reflect the emitted light from the halogen lamp 12, thereby solving the problem of the difficulty in focusing the halogen lamp 12 in the related art.

[0053] At the same time, during the manufacturing process, the material of the shell 1 is selected to have a certain hardness, such as an aluminum alloy material. The lampshade 3 also needs to have a certain hardness and be a material that is convenient for die pressing. Since the lampshade 3 not only supports the first reflector 2, but also has a first curved surface portion 31 and a second curved surface portion 32.

[0054] In addition, Figure 8 , Fig. 9 As shown, when the first reflector 2 reflects the emitted light of the halogen lamp 12, it is necessary to be able to reflect the light along the opening direction of the first reflector 2 (ie Figure 2 The light is reflected in parallel (directly above the center) to achieve the purpose of effective focusing.

[0055] In the selection of the lamp holder 11, based on the fact that the light source used in this application is a halogen lamp 12, a material that is resistant to high temperatures and not easily deformed, such as a ceramic lamp holder, is selected as the material for making the lamp holder 11. At the same time, the halogen lamp in this application is selected as a tungsten filament bulb, in which the tungsten filament is used as the light source to emit light.

[0056] In the present application, the first reflective sheet 2 is covered on the first surface of the first curved surface portion and the second curved surface portion of the lampshade 3 by pressing, which is different from the related art that also uses a reflective sheet for reflection and adopts a back-adhesive pasting method. It is easy to cause the reflective surface of the first reflective sheet 2, that is, the third surface, to be uneven during the pasting process due to the uneven distribution of the back adhesive on the first curved surface portion 31 and the second curved surface portion 32.

[0057] like Figure 5 , Figure 6 As shown, further, the housing 1 includes a first end 101 and a second end 102 , a plurality of lamp holders 11 are arranged at equal intervals between the first end 101 and the second end 102 , and a halogen lamp 12 is disposed on each of the lamp holders 11 .

[0058] In the present application, a situation in which supplementary lighting is provided for more than a single plant is provided. The housing 1 is selected to be in an elongated strip shape, and a plurality of lamp holders 11 can be arranged along the interior of the elongated strip housing 1. A halogen lamp 12 is provided in each lamp holder 11. In this way, when supplementary lighting is provided for the plants, a connector 7 is installed on a side of the housing 1 away from the lampshade 3. When there are relatively many plants that need supplementary lighting, the connector 7 is hoisted so that the reflected light faces downward and is swept over the plants that need supplementary lighting to provide supplementary lighting for the plants. Figure 3 , Figure 4 As shown in the figure, 10 lamp holders 11 and 10 halogen lamps 12 are arranged on the shell 1 of the present application. The 10 halogen lamps 12 are arranged in a row or a column, and then the reflected light is emitted in the direction of the first reflector 2 to emit long parallel light to provide supplementary light for multiple plants at the same time.

[0059] Of course, it should be noted that the first end 101 and the second end 102 of the housing 1 are respectively Figure 3 and Figure 4 The number of lamp holders 11 and halogen lamps 12 installed at the left and right ends of the middle housing 1 needs to be selected based on the actual voltage conditions and the power of the halogen lamps 12 .

[0060] The tungsten filaments 121 of the halogen lamp 12 are configured to extend in directions from the first end 101 to the second end 102 , and the extending directions of the tungsten filaments 121 of the halogen lamp 12 are on the same straight line.

[0061] In the present application, through the above description, a lampshade 3 is uniformly installed inside the long shell 1, and the parabolic cross-section formed by the lampshade 3 is the same. In order to effectively reflect the emitted light, and the reflected light is uniform parallel light, the halogen lamp 12 is used as the light source. When emitting light, since the tungsten filament 121 of the halogen lamp 12 is used as the light source, in order to match the first reflector 2 with a parabolic profile, the overall light source needs to be adapted in shape to the extension direction of the first reflector 2, and also to the extension direction of the lampshade 3. The extension direction is the direction from the first end 101 to the second end 102 of the shell 1. Therefore, the tungsten filaments 121 of each halogen lamp 12 are required to be on the same straight line, and the length direction of the tungsten filament 121 is also along the direction from the first end 101 to the second end 102 of the shell 1. Here, the reflected light of each halogen lamp 12 in the lampshade 3 is in the same direction.

[0062] Furthermore, the first reflective sheet 2 is mirror aluminum made by laser engraving technology, and the mirror aluminum is configured to have a reflectivity of 90% to 98% and a near-infrared reflectivity of 90% to 95%.

[0063] The mirror aluminum made by laser engraving technology is used as the first reflector 2. The mirror aluminum has high long-term stability, high temperature resistance, scratch resistance, and anti-static properties. At the same time, the maximum reflectivity of professional mirror aluminum is 90%~98%, which meets the reflection requirements. At the same time, the reflectivity of near-infrared (band 800nm~5000nm) can also reach 93%, further meeting the full spectrum requirements of the fill light.

[0064] Furthermore, a wedge-shaped second reflector 4 is provided between the halogen lamps 12 , and the second reflector 4 is configured to focus the emitted light of the tungsten filament 121 of the halogen lamp 12 .

[0065] like Figure 5 , Figure 6 , Fig.10 As shown in the above description, it can be seen that when the tungsten filament 121 of the halogen lamp 12 between the first end and the second end of the housing emits light, it is easy to cause the diffusion of the emitted light along the direction from the first end to the second end of the housing 1. In order to reduce the diffusion of the emitted light, a wedge-shaped second reflector 4 is arranged between the halogen lamps 12, as shown in FIG. Fig.10 As shown in the figure, the wedge-shaped second reflector 4 has an inclination angle from the bottom end of the lampshade 2 to the opening direction of the lampshade 2, and the inclination angle is 30° to 80°, thereby causing light diffusion in the lampshade 2 along the direction from the first end to the second end of the shell 1, and it is impossible to focus light more effectively.

[0066] Furthermore, an isolation layer 122 , a PCB circuit board and a support layer 124 are sequentially provided between the bottom end of the lamp holder 11 and the bottom end of the housing 1 , wherein the PCB circuit board is electrically connected to the lamp holder 11 .

[0067] like Figure 2 , Figure 4 As shown, in the present application, a plurality of lamp holders 11 in the present application are electrically connected to each other using a PCB board 123, wherein the PCB board 123 is fixed by screws below the lamp holder 11, and the PCB board 123 is used as a connection line between the lamp holders 11, which can simplify the line connection. At the same time, an isolation layer 122 is added between the lamp holder 11 and the PCB, wherein the material of the isolation layer 122 is selected from high-temperature resistant silicone, and the isolation layer 122 can isolate strong electricity and meet the power frequency withstand voltage test and the DC withstand voltage test; a support layer 124 is provided below the PCB board 123 of the lamp holder 11, so that the PCB board 123 and the shell 1 does not make direct contact, and heat dissipation is convenient. Bolts pass through the isolation layer 122, the PCB board 123 and the support layer 124. The bolts press the bottom of the shell 1, so that the isolation layer 122, the PCB board 123 and the support plate are suspended as a whole. At the same time, a blocking member capable of fixing the top of the isolation layer 122 is provided on the shell 1, and the support layer 124 can support the PCB board 123. At the same time, the material of the support layer 124 also needs to be strong enough and not easy to deform, and resistant to high temperature, such as a stainless steel plate, to avoid damage to the PCB board 123 caused by the rigid contact force between the PCB board 123 and the bolts.

[0068] It should be noted that the lamp holder 11 is connected through the PCB board 123, and the series connection or parallel connection needs to be selected according to the actual situation. For example, the voltage in some areas is 220V, and the halogen lamp 12 is generally 100W, 24V, then all 10 lamp holders 11 need to be connected in series to achieve the desired fill light effect. The voltage in some areas is 110V, then the 10 lamp holders 11 need to be divided into two groups, 5 in the first group are connected in series, and 5 in the second group are connected in series, and then the first group and the second group are connected in parallel to meet the luminous effect of the halogen lamp 12, thereby achieving fill light.

[0069] Furthermore, a cooling fan 5 is provided at the first end 101 and the second end 102 of the housing 1 . The cooling fan 5 is electrically connected to the PCB circuit board via a temperature sensor for cooling the halogen lamp 12 and the housing 1 .

[0070] While the halogen lamp 12 is emitting light, due to its high heat generation, it is often necessary to provide supplementary light very close to the plant canopy. During mobile phenotyping measurements based on hyperspectral imaging technology, the large amount of heat emitted by the halogen lamp 12 is likely to cause burns to the plant canopy. In the present application, due to the internal space of the parabolic profile formed by the lampshade 3 and the first reflector 2, it is impossible to effectively dissipate heat during long-term use. A fan fixing hole 51 is reserved on the shell 1 to fix the cooling fan 5, wherein there are two cooling fans 5, which are respectively fixed at the first end 101 and the second end 102 of the shell 1 for heat dissipation, wherein reference Figure 1 , Figure 2 , Figure 3 , Figure 4 In the figure, two cooling fans 5 can dissipate heat simultaneously to the internal space of the parabolic profile formed by the lampshade 3 and the first reflector 2, and the convection air duct formed between the lampshade 3 and the shell 1, and the shell 1. The air outlet directions of the two cooling fans 5 are the same, thereby forming a wind flow to achieve a good heat dissipation and cooling effect. At the same time, the temperature sensor collects the current temperature. When the temperature reaches the critical temperature, the cooling fan 5 automatically turns on to achieve an intelligent heat dissipation effect.

[0071] Furthermore, the housing 1 and the lampshade 3 are integrally formed, and a convection air duct is formed between the housing 1 and the lampshade 2. According to the above description, the lampshade 3 and the housing 1 can be made of a material with a certain hardness, and both can be made of aluminum alloy. The housing 1 and the lampshade 3 are integrally formed using an aluminum extrusion manufacturing process, so that the housing 1 and the lampshade 3 are tightly connected, and there is no need to make them separately and then assemble them, which saves production steps and manpower, and the convection air duct is more convenient for the two cooling fans 5 to form convection wind for heat dissipation.

[0072] In one embodiment, the present application provides a method for determining a cross-sectional profile of a lampshade, comprising:

[0073] Determine the tungsten filament of the halogen lamp as the coordinate origin of the third surface of the first reflector, and determine the curve function of the third surface of the first reflector ;

[0074] Determine the thickness H of the first reflective sheet;

[0075] A curve function based on the thickness H of the first reflector and the third surface of the first reflector , calculate the curve function of the fourth surface of the first reflector The parametric equation of .

[0076] At the same time, it should be noted that the thickness of the first reflector 2 is 0.3mm~1mm. Here, in order to reflect the emitted light, it is necessary to calculate the parabola of the cross section of the lampshade 3 when the lampshade 3 and the shell 1 are integrally formed, so as to adapt to the first reflector 2 being pressed onto the first surfaces of the first curved surface portion and the second curved surface portion of the lampshade 3. The parabolic profile formed by the third surface of the first reflector 2 can complete the reflection of the emitted light into parallel light and reflect it out from the opening of the lampshade 3. That is to say, the parabolic profile formed by the first curved surface portion 31 and the second curved surface portion 32 of the lampshade 3 needs to satisfy the surface parameter equation of the third surface of the first reflector 2 plus the thickness of the first reflector 2.

[0077] like Figure 7 As shown, the tungsten filament of the halogen lamp is determined as the coordinate origin of the third surface of the first reflector, and the curve function of the third surface of the first reflector is determined. , here, let the arbitrary curve is the main function, and this main function is used as the curve function of the third surface of the first reflecting sheet, for The thickness function, that is, is the curve function of the fourth surface of the first reflection sheet 2, H is the length of the line segment AB (the thickness of the first reflection sheet 2), then,

[0078] , for The first derivative (slope) of

[0079] Then the parametric equation of the curve function of the fourth surface of the first reflector is as follows:

[0080]

[0081] in, is the coordinate, for The first derivative of .

[0082] Then, the correction values ​​of the first surfaces of the first curved surface portion 31 and the second curved surface portion 32 of the lamp housing 2 are determined.

[0083] When the fourth surface of the first reflector 2 is attached to the first surface of the first curved surface portion and the second curved surface portion of the lampshade, the curve function of the fourth surface of the first reflector 2 is the same as the curve function of the curve profile of the first surface of the first curved surface portion 31 and the second curved surface portion 32 of the lampshade 3. However, considering that in the process of producing the lampshade 3, the curve function of the first surface of the first curved surface portion 31 and the second curved surface portion 32 of the lampshade 3 may have an error with the curve function of the fourth surface of the first reflector 2 actually calculated, then considering this error as a correction value, the parameter equation of the curve function of the curve profile of the first surface of the first curved surface portion 31 and the second curved surface portion 32 of the lampshade 3 can be corrected to:

[0084]

[0085] in, , are correction values ​​of the first surfaces of the first curved surface portion and the second curved surface portion of the lampshade.

[0086] Determine the tungsten filament of the halogen lamp as the coordinate origin of the third surface of the first reflector, and determine the curve function of the third surface of the first reflector .

[0087] The third surface (parabolic profile) of the first reflector 2 designed in the present application takes the tungsten filament 121 of the halogen lamp 12 as the coordinate origin, so the parameter equation of the curve function of the third surface of the first reflector 2 is:

[0088] ,in is the diameter of the third surface of the first reflecting sheet, The value range is -100~100.

[0089] The tungsten filament 121 of the halogen lamp 12 is used as the coordinate origin of the third surface of the first reflector 2, so that the emitted light of the tungsten filament is reflected by the third surface of the first reflector to form parallel light.

[0090] A curve function based on the fourth surface of the first reflecting sheet The parameter equation and the correction value of the first surface of the first curved portion and the second curved portion of the lampshade are used to determine the contour function formed by the first surface of the first curved portion and the second curved portion of the lampshade. .

[0091] The parametric equation of the parabolic profile of the first surface composed of the first curved surface portion and the second curved surface portion of the lampshade 3 required by the present application is as follows:

[0092]

[0093] The parameter equation is used to calculate and produce the curve profile composed of the first surface of the first curved surface portion 31 and the second curved surface portion 32 of the lampshade 2, so as to adapt the first reflector 2 to be pressed on the first surface of the first curved surface portion and the second curved surface portion, and to satisfy the first reflector 2 to reflect the emitted light of the tungsten filament of the halogen lamp as parallel light. It should be noted here that according to the profile function Determining the cross-sectional profile of the lampshade is mainly used to determine the curved profiles of the first surfaces of the first curved surface portion 31 and the second curved surface portion 32 of the lampshade 2. The profile of the side away from the first surface can be set to a desired profile shape according to actual needs.

[0094] Table 1 below shows example data of a parabola profile formed by the first curved surface portion 31 and the second curved surface portion 32 of the lampshade 3 (with the tungsten filament 121 of the halogen lamp 12 as the coordinate origin).

[0095]

[0096] Table 1

[0097] Furthermore, a pressing tongue 6 is provided above the connecting end of the first curved surface portion, the second curved surface portion and the shell 1, and the pressing tongue 6 is provided with an embedding groove 61 opening toward the first surface, which is used to attach the first reflective sheet 2 to the first surface of the first curved surface portion and the second curved surface portion.

[0098] like Figure 1 middle, Figure 2 As shown, in the laminating process, when the first reflector 2 is pressed onto the lampshade 3, it is necessary to first fit the fourth surface of the first reflector 2 onto the first surfaces of the first curved surface portion 31 and the second curved surface portion 32 of the lampshade 3, by first inserting the two ends of the first reflector 2 into the embedding groove 61 of the pressing tongue 6, and then pressing the pressing tongue 6 downward to deform the pressing tongue 6, so that the reflector is naturally fitted onto the first surfaces of the first curved surface portion 31 and the second curved surface portion 32, in preparation for subsequently pressing the first reflector 2 onto the lampshade 3 through the laminating process.

[0099] In the embodiment of the present application, the first curved portion and the second curved portion of the lampshade are combined to form a parabolic contour section. The present application aims to reflect the emitted light of the halogen lamp into parallel light, and under the action of the overall shell and the lampshade, the reflected parallel light forms a long strip of light spot contour. In addition, according to different fill light requirements, the lampshade can be designed as a hyperboloid, a mixed surface of a parabola and a hyperboloid, etc., which is not limited here.

[0100] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0101] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A method for determining a cross-sectional profile of a lampshade, characterized in that: Applicable to a high-intensity full-spectrum fill light set, comprising: a housing and a first reflector; The bottom end of the housing is provided with a lamp holder for mounting and fixing a halogen lamp; The lamp holder cover is provided with a lamp cover, the lamp cover comprises a first curved surface portion and a second curved surface portion opposite to each other, the first curved surface portion and the second curved surface portion are symmetrically arranged to form a parabolic profile, and the first curved surface portion and the second curved surface portion both comprise a first surface close to the halogen lamp; A first reflective sheet is pressed onto the first surface of the first curved surface portion and the second curved surface portion to form a third curved surface portion, wherein the third curved surface portion has a parabolic profile, wherein the third curved surface portion includes a third surface and a fourth surface, wherein the fourth surface is attached to the first surface, and the third surface is used to reflect the emitted light of the halogen lamp into parallel light; The housing comprises a first end and a second end, a plurality of lamp holders are arranged at equal intervals between the first end and the second end, and at least some of the lamp holders are provided with halogen lamps; The extension directions of the tungsten filaments of the halogen lamps are configured to extend from the first end to the second end, and the extension directions of the tungsten filaments of the halogen lamps are on the same straight line; A wedge-shaped second reflector is provided between the halogen lamps, and the second reflector is configured to focus the emitted light of the tungsten filament of the halogen lamp; The first reflective sheet is a mirror aluminum made by laser engraving, and the mirror aluminum is configured to have a reflectivity of 90% to 98% and a near-infrared reflectivity of 90% to 95%; An isolation layer, a PCB circuit board and a support layer are sequentially arranged between the bottom end of the lamp holder and the bottom end of the housing, wherein the PCB circuit board is electrically connected to the lamp holder; A cooling fan is provided at the first end and the second end of the housing, and the cooling fan is electrically connected to the PCB circuit board via a temperature sensor, and is used for intelligently cooling the halogen lamp and the housing; The housing and the lampshade are integrally formed, and a convection air duct is formed between the housing and the lampshade; A pressing tongue is provided above the connection ends of the first curved surface portion, the second curved surface portion and the housing, the pressing tongue is provided with an embedding groove opening toward the first surface, and the first reflective sheet is inserted into the embedding groove; The method comprises: Determine the tungsten filament of the halogen lamp as the coordinate origin of the third surface of the first reflector, and determine the curve function f(x) of the third surface of the first reflector; Determine the thickness H of the first reflective sheet; Calculate a parameter equation of a curve function F(x) of a fourth surface of the first reflector based on the thickness H of the first reflector and the curve function f(x) of the third surface of the first reflector; Determine correction values ​​of the first surface of the first curved portion and the second curved portion of the lampshade; Determine a contour function G(x) formed by the first surfaces of the first curved surface portion and the second curved surface portion of the lampshade based on a parameter equation of a curve function F(x) of the fourth surface of the first reflector and correction values ​​of the first surfaces of the first curved surface portion and the second curved surface portion of the lampshade; The cross-sectional profile of the lampshade is determined according to the profile function G(x).

2. The method according to claim 1, characterized in that The parameter equation of the curve function F(x) of the fourth surface of the first reflector is calculated based on the thickness H of the first reflector and the curve function f(x) of the third surface of the first reflector, and the calculation is performed using the following formula: Where x and y are coordinates, f'(t) is the first-order derivative of f(t); The corrected contour function G(x) is: Among them, t x , t y are correction values ​​of the first surfaces of the first curved surface portion and the second curved surface portion of the lampshade.

3. The method according to claim 2, characterized in that The tungsten filament of the halogen lamp is determined as the coordinate origin of the third surface of the first reflector, and the curve function f(x) of the third surface of the first reflector is determined. The typical implementation of f(x) is calculated using the following formula: Wherein, a is the diameter of the third surface of the first reflector, and the value range of a is -100 to 100.

4. The method according to claim 3, characterized in that The parametric equation F(x) of the curve function based on the fourth surface of the first reflector and the correction value of the first surface of the first curved surface portion and the second curved surface portion of the lampshade are used to determine the contour function formed by the first surface of the first curved surface portion and the second curved surface portion of the lampshade. After calculation and adding the correction parameter, G(x) is calculated using the following formula: Among them, t x , t y are correction values ​​of the first surfaces of the first curved surface portion and the second curved surface portion of the lampshade.

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