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CN118775809B - Polarizing optical system, mirror cabinet lighting device and mirror cabinet - Google Patents

Polarizing optical system, mirror cabinet lighting device and mirror cabinet Download PDF

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Publication number
CN118775809B
CN118775809B CN202411262291.1A CN202411262291A CN118775809B CN 118775809 B CN118775809 B CN 118775809B CN 202411262291 A CN202411262291 A CN 202411262291A CN 118775809 B CN118775809 B CN 118775809B
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CN
China
Prior art keywords
light
plane
light source
plate
polarized
Prior art date
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Application number
CN202411262291.1A
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Chinese (zh)
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CN118775809A (en
Inventor
陈俄振
谢伟藩
刘承贵
叶小毅
彭志遒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hengjie Intelligent Sanitary Ware Shenzhen Co ltd
Original Assignee
Hengjie Intelligent Sanitary Ware Shenzhen Co ltd
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Priority to CN202411262291.1A priority Critical patent/CN118775809B/en
Publication of CN118775809A publication Critical patent/CN118775809A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B67/00—Chests; Dressing-tables; Medicine cabinets or the like; Cabinets characterised by the arrangement of drawers
    • A47B67/005—Mirror cabinets; Dressing-tables
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/005—Refractors for light sources using microoptical elements for redirecting or diffusing light using microprisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2220/00—General furniture construction, e.g. fittings
    • A47B2220/0075—Lighting
    • A47B2220/0077—Lighting for furniture, e.g. cupboards and racks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/30—Lighting for domestic or personal use
    • F21W2131/302—Lighting for domestic or personal use for mirrors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

本发明涉及镜柜照明技术领域，公开了一种偏光光学系统、镜柜照明装置及镜柜，偏光光学系统包括：沿出光方向依次设置的光源板、偏光透镜和扩散板；光源板上设有光源，光源位于偏光透镜的入射面内；偏光透镜设置在光源板上，偏光透镜的入射面的曲率沿偏光透镜的左端至偏光透镜的右端逐渐变小，偏光透镜的出射面的曲率沿偏光透镜的左端至偏光透镜的右端逐渐变大，用于使光源出射的光线向第一方向偏转；扩散板的入射面设有若干沿第一方向排列设置的微棱镜，用于使光线再次向第一方向偏转，本发明可以使位于镜柜边缘的光源出射的光线向镜柜中部照射，偏向镜子前方，能为镜柜的中部提高清晰的照明。

The invention relates to the technical field of mirror cabinet lighting, and discloses a polarized optical system, a mirror cabinet lighting device and a mirror cabinet. The polarized optical system comprises: a light source board, a polarized lens and a diffusion board which are sequentially arranged along a light emitting direction; a light source is arranged on the light source board, and the light source is located in an incident plane of the polarized lens; the polarized lens is arranged on the light source board, and the curvature of the incident plane of the polarized lens gradually decreases from the left end of the polarized lens to the right end of the polarized lens, and the curvature of the exit plane of the polarized lens gradually increases from the left end of the polarized lens to the right end of the polarized lens, so as to deflect the light emitted by the light source toward a first direction; the incident plane of the diffusion board is provided with a plurality of microprisms arranged along a first direction, so as to deflect the light toward the first direction again. The invention can make the light emitted by the light source located at the edge of the mirror cabinet irradiate toward the middle of the mirror cabinet, and deviate toward the front of the mirror, so as to improve clear lighting for the middle of the mirror cabinet.

Description

Polarizing optical system, mirror cabinet lighting device and mirror cabinet
Technical Field
The invention relates to the technical field of mirror cabinet illumination, in particular to a polarized light optical system, a mirror cabinet illumination device and a mirror cabinet.
Background
Currently, toilets are often used as cosmetic places for convenient and quick make-up. The lamplight required for makeup is softer and more realistic, and additional lamplight is often provided as auxiliary illumination. Therefore, cosmetic lights are usually provided on the mirror cabinet of a bathroom or bedroom, but in order to avoid affecting the normal use of the mirror cabinet, the cosmetic lights are usually disposed on the top, two sides or around the mirror cabinet, and for the mirror cabinet with larger size, the light interval installed on two sides is larger, and because the light irradiation direction or the main optical axis direction faces the right front of the light emitting surface, i.e. the direction perpendicular to the light emitting surface, it is difficult to irradiate the front of the mirror, which can cause dark areas on the face.
Therefore, the illumination device on the mirror cabinet cannot achieve illumination and reality required by makeup, and shadow on the face often occurs, so that the face in the middle area of the mirror cabinet cannot be clearly illuminated comprehensively.
Disclosure of Invention
In view of the above, the invention provides a polarized light optical system, a mirror cabinet lighting device and a mirror cabinet, which are used for solving or partially solving the technical problem that the lighting device on the existing mirror cabinet cannot clearly illuminate a human face.
The technical scheme provided by the invention is as follows:
The first aspect of the present invention provides a polarizing optical system comprising: the light source plate, the polarized lens and the diffusion plate are sequentially arranged along the light emitting direction; the light source plate is provided with a light source, and the light source is positioned in the incident plane of the polarized lens; the light source plate is provided with a light source, the light source is provided with a polarized light lens, the polarized light lens is arranged on the light source plate, the curvature of an incident surface of the polarized light lens is gradually reduced from the left end of the polarized light lens to the right end of the polarized light lens, the curvature of an emergent surface of the polarized light lens is gradually increased from the left end of the polarized light lens to the right end of the polarized light lens, and the polarized light lens is used for deflecting light emitted by the light source to a first direction which is parallel to a light emergent surface of the polarized light optical system; the incidence surface of the diffusion plate is provided with a plurality of microprisms arranged along a first direction, and the microprisms are used for deflecting the light rays emitted by the polarized lens towards the first direction again.
Optionally, the microprism comprises a first plane and a second plane, the first plane and the second plane being connected to form a wedge, and the tip of the wedge being inclined to the first direction.
Optionally, the first plane is an optical plane, and the second plane is a non-optical plane.
Optionally, the included angle between the first plane and the light-emitting surface and the included angle between the second plane and the light-emitting surface decrease in sequence along the first direction.
Optionally, an included angle between the first plane and the light emitting surface, which are arranged along the first direction, is:
In the formula, Is the included angle between the first plane and the light-emitting surface,For the horizontal distance between the light source and one end of the diffusion plate,As the refractive index of the diffusion plate,A vertical distance between the light source and the diffusion plate;
The included angle between the last first plane arranged along the first direction and the light-emitting surface is:
In the formula, For the last included angle between the first plane and the light-emitting surface,A horizontal distance between the light source and the other end of the diffusion plate;
the decreasing angle of the adjacent first planes is as follows:
In the formula, For a decreasing angle of the first plane,The number of the microprisms is the number;
the included angle between the first second plane arranged along the first direction and the light emitting surface is:
In the formula, An included angle between the first second plane and the light-emitting surface;
the included angle between the last second plane arranged along the first direction and the light-emitting surface is as follows:
In the formula, The included angle between the last second plane and the light-emitting surface is the last included angle;
the decreasing angle of the adjacent second plane is:
In the formula, Is a decreasing angle of the second plane.
Optionally, the main optical axis of the light source plate is biased towards the first direction, and an included angle between the main optical axis and the vertical direction is:
In the formula, Is the included angle between the main optical axis and the vertical direction,Is the width of the diffusion plate,For the horizontal distance between the light source and one end of the diffusion plate,Is the vertical distance between the light source and the diffusion plate.
Optionally, the light source device further comprises a first reflector, wherein the first reflector is arranged in a left side area between the diffusion plate and the light source plate, and a first reflector surface is arranged on one side of the first reflector, which is close to the light source, and is used for reflecting light rays irradiated to the left side area onto the diffusion plate; and/or the second reflector is arranged in a right side area between the diffusion plate and the light source plate, and one side of the second reflector, which is close to the light source, is provided with a second reflector surface for reflecting the light rays irradiated to the right side area onto the diffusion plate.
Optionally, the first reflecting surface is a plane; and/or, the second reflecting surface is a plane.
Optionally, the curvature of the first reflecting surface gradually increases from one side close to the light source to the other side far away from the light source; and/or the curvature of the second reflecting surface gradually decreases from one side close to the light source to the other side far away from the light source.
A second aspect of the present invention provides a mirror cabinet lighting device comprising the polarizing optical system according to any one of the first aspect and the first aspect of the present invention.
A third aspect of the invention provides a mirror cabinet comprising a mirror cabinet lighting device according to the second aspect of the invention.
From the above technical scheme, the invention has the following advantages:
According to the polarized light optical system, the mirror cabinet lighting device and the mirror cabinet, the light source plate, the polarized light lens and the diffusion plate are sequentially arranged along the light outlet direction, the curvature of the incident surface of the polarized light lens gradually becomes smaller from left to right along the length direction of the polarized light lens, the curvature of the emergent surface of the polarized light lens gradually becomes larger from left to right along the length direction of the polarized light lens, the light rays emitted by the light source can be deflected primarily towards the first direction, the incident surface of the diffusion plate is provided with the plurality of micro prisms arranged along the first direction, the light rays emitted by the polarized light lens are deflected towards the first direction again, the light rays generated by the light source are deflected secondarily, the emergent light rays can be deflected towards the first direction greatly, the applicable scene of the polarized light optical system is enlarged, the emergent light rays are deflected to the right front of the mirror cabinet lighting device, and the mirror cabinet lighting device is usually arranged on the periphery of the mirror cabinet, so that the light rays emitted by the light source positioned at the edge of the mirror cabinet can be irradiated towards the middle of the mirror cabinet, the middle of the mirror cabinet can be deflected towards the front, and the related mirror cabinet can be increased, and the mirror cabinet lighting device is convenient for people can use the mirror clearly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a polarizing optical system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an overall optical path of a polarizing optical system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an optical path of a polarized lens according to an embodiment of the invention;
FIG. 4 is a schematic view of a diffuser plate according to an embodiment of the present invention;
FIG. 5is an enlarged view of a portion A of FIG. 4;
FIG. 6 is an enlarged view of part B of FIG. 4;
FIG. 7 is a schematic view of an optical path when the included angle between adjacent microprisms decreases in an embodiment of the present invention;
FIG. 8 is a schematic view of the light path when the angle between adjacent microprisms is unchanged in the embodiment of the present invention;
FIG. 9 is a schematic diagram of a lighting device for a mirror cabinet according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a mirror cabinet according to an embodiment of the invention.
Reference numerals:
1-a light source board; 11-a light source; 2-polarized lenses; 3-a diffusion plate; 31-microprisms; 311-a first plane; 312-a second plane; 41-a first reflector; 42-a second reflector; 5-a shell.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, or can be communicated inside the two components, or can be connected wirelessly or in a wired way. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The embodiment of the invention provides a polarized light optical system which can be applied to mirror cabinets in various scenes such as bathrooms, toilets and bedrooms, and the emergent light is deflected to the front of a mirror, so that the lighting requirements of a user when using the mirror cabinet to make up, arrange and the like are met.
As shown in fig. 1 and 2, an embodiment of the present invention provides a polarized optical system including a light source plate 1, a polarized lens 2, and a diffusion plate 3 sequentially arranged in a light-emitting direction; the light source plate 1 is provided with a light source 11, and the light source 11 is positioned in the incident plane of the polarized lens 2; the polarized lens 2 is arranged on the light source plate 1, the curvature of the incident surface of the polarized lens 2 gradually decreases from the left end of the polarized lens 2 to the right end of the polarized lens 2, and the curvature of the emergent surface of the polarized lens 2 gradually increases from the left end of the polarized lens 2 to the right end of the polarized lens 2, so as to deflect the light emitted by the light source 11 in a first direction, wherein the first direction is parallel to the emergent surface of the polarized optical system; the incidence surface of the diffusion plate 3 is provided with a plurality of microprisms 31 arranged in a first direction for deflecting the light emitted from the polarized lens 2 in the first direction again.
The light source 11 may employ various types of light emitting devices such as LED beads, incandescent lamps, halogen lamps, and the like.
In an example, the light source 11 adopts LED beads, and correspondingly, the light source board 1 is a plurality of LED beads and electronic elements arranged on the LED light source 11.
The color of the LED lamp beads is at least two colors of a plurality of LED lamp beads. Particularly, the low color temperature of one LED lamp bead is less than or equal to 3000K, and the high color temperature of the other LED lamp bead is more than or equal to 5000K. Two or more different color temperatures can achieve other color temperatures between the lowest color temperature and the highest color temperature with a certain proportion of brightness. Thereby meeting the illumination color requirements under different environments. In addition, the color rendering index CRI of the LED lamp beads is more than 90Ra, and the high color rendering index can restore the real irradiation effect.
As shown in fig. 3, the polarized lens 2 is composed of mainly two optical surfaces, i.e., an incident surface and an exit surface. The light source 11 is placed in the incidence plane of the polarized lens 2.
The polarized lens 2 is formed by extrusion molding process, and is made of optical plastic, including but not limited to polymethyl methacrylate (PMMA), polycarbonate (PC), polyvinyl chloride (PVC), etc.
The polarized lens 2 is provided on the light source plate 1, the bottom surface of the lens is parallel to the light source plate 1, and the polarized lens 2 and the light source plate 1 jointly surround the light source 11. The light source plate 1 can be obliquely arranged, and the light source 11 and the polarized lens 2 are correspondingly inclined, so that emergent light of the light source plate deviates to a first direction. The first direction is any direction parallel to the light emitting surface of the polarized light optical system, for example, the first direction is parallel to the light emitting surface to the right, so that the light emitting surface deflects to the right, and the polarized light optical system can be correspondingly arranged at the left side of the mirror cabinet to deflect the light to the middle of the mirror.
In an example, assuming that the light emitting surface is upward, the light source plate 1, the polarized lens 2, and the diffusion plate 3 are disposed in this order from bottom to top, and the polarized lens 2 and the light source plate 1 are disposed obliquely and directed to the upper right, the first direction is the left-to-right direction, i.e., the positive X-axis direction. Since the curvature of the incident surface of the polarized lens 2 gradually decreases from the left end of the polarized lens 2 to the right end of the polarized lens 2, the curvature of the exit surface of the polarized lens 2 gradually increases from the left end of the polarized lens 2 to the right end of the polarized lens 2, and according to the light refraction principle, the light emitted from the light source 11 can deflect rightward after passing through the polarized lens 2 and is totally deflected in the positive direction of the X axis. In addition, the polarized lens 2 can also reduce the light distribution angle of the light source 11, has the function of light receiving, enables more light to directly act on the diffusion plate 3, can improve the light extraction efficiency, and has brighter overall illumination effect.
The diffusion plate 3 is formed by extrusion molding, and is made of optical plastics including but not limited to polymethyl methacrylate (PMMA), polycarbonate (PC), polyvinyl chloride (PVC), etc. The optical surface of the diffusion plate 3 has two surfaces, namely an incident surface and an exit surface.
As shown in fig. 4, 5 and 6, the incident surface of the diffusion plate 3 is mainly composed of a plurality of wedge-shaped prisms, and the plurality of microprisms 31 are arranged along the first direction to form a zigzag incident surface.
By adjusting the angle of the prism micro, the light emitted through the diffusion plate 3 can be deflected again in the first direction by using the refraction principle of light.
The emergent surface of the diffusion plate 3 is a plane, namely, the emergent surface of the diffusion plate 3 is parallel to the emergent surface of the polarized light optical system, so that the processing is convenient.
According to the polarized light optical system provided by the embodiment of the invention, through the light source plate 1, the polarized lens 2 and the diffusion plate 3 which are sequentially arranged along the light emitting direction, the curvature of the incident surface of the polarized lens 2 gradually becomes smaller from left to right along the length direction of the polarized lens 2, and the curvature of the emergent surface of the polarized lens 2 gradually becomes larger from left to right along the length direction of the polarized lens 2, so that the light emitted by the light source 11 can be deflected primarily towards the first direction, the incident surface of the diffusion plate 3 is provided with the plurality of microprisms 31 which are arranged in a row along the first direction, the light emitted by the polarized lens 2 is deflected again towards the first direction, the light generated by the light source 11 is deflected secondarily, the applicable scene of the polarized light optical system can be greatly deflected towards the first direction, the emergent light is deflected towards the right front of the mirror cabinet lighting device, and the mirror cabinet lighting device is usually arranged on the periphery of the mirror cabinet, thus the light emitted by the light source 11 positioned at the edge of the mirror cabinet can be deflected towards the middle of the mirror cabinet, the mirror cabinet can be clearly lighted, and the related personnel can use the mirror cabinet conveniently.
The embodiment of the invention utilizes the polarized lens 2 and the diffusion plate 3 to carry out polarized light, and only needs to carry out simple structural adjustment on the existing optical system, has simple structure and is beneficial to reducing the volume of the optical system.
In some embodiments, microprisms 31 comprise a first plane 311 and a second plane 312, where first plane 311 and second plane 312 are connected to form a wedge, the tips of which slope in a first direction.
Specifically, each of the microprisms 31 includes a first plane 311 and a second plane 312, the adjacent microprisms 31 are equally spaced, and the second plane 312 is located on the right side of the first plane 311 in the same microprism 31.
The embodiment of the present invention makes the incident light of the light source 11 to be irradiated onto the first plane 311 as much as possible by tilting the tip of the wedge shape of each micro prism 31 toward the first direction, and deflects the light toward the first direction through the first plane 311.
In some embodiments, the first plane 311 is an optical plane, which mainly refracts and deflects the light emitted by the light source 11 in a first direction, and the second plane 312 is a non-optical plane, which mainly connects the first plane 311 of the next microprism 31 in the first direction.
By distinguishing the functions of the first plane 311 and the second plane 312 from each other, by such an arrangement, the light deflection situation is as shown in fig. 7, so that the incident light of the light source 11 can not strike the second plane 312 as much as possible, and the light can be deflected effectively. At the same time, when light is prevented from shining on the second plane 312, as shown in fig. 8, the light is deflected in the opposite direction to the first direction, i.e., the negative direction of the X-axis, to generate ineffective light.
Further, the angle between the first plane 311 and the light-emitting surface and the angle between the second plane 312 and the light-emitting surface decrease in sequence along the first direction.
Specifically, for each micro prism 31, the angle between the first plane 311 and the light exit surface of the next micro prism 31 in the first direction and the angle between the second plane 312 and the light exit surface are smaller than those of the previous micro prism 31, and decrease in sequence.
By means of the way that the included angle between the first plane 311 and the light-emitting surface and the included angle between the second plane 312 and the light-emitting surface are gradually decreased along the first direction, the purpose that the first plane 311 is used as an optical surface and the second plane 312 is used as a non-optical surface is achieved, namely, light rays can be refracted out through the first plane 311 and cannot irradiate on the second plane 312 as far as possible.
Further, in an embodiment, the included angle between the first plane 311 arranged along the first direction and the light-emitting surface, that is, the included angle between the first plane 311 of the first microprism 31 and the light-emitting surface is:
In the formula, The angle between the first plane 311 and the light-emitting surface,For the horizontal distance between the light source 11 and one end of the diffusion plate 3,Is the refractive index of the diffusion plate 3,Is the vertical distance between the light source 11 and the diffusion plate 3.
The included angle between the last first plane 311 arranged along the first direction and the light emitting surface, that is, the included angle between the first plane 311 of the last microprism 31 and the light emitting surface is:
In the formula, The last first plane 311 forms an angle with the light-emitting surface,Is the horizontal distance between the light source 11 and the other end of the diffusion plate 3. In one example of the implementation of the method,For the horizontal distance between the light source 11 and the left end of the diffusion plate 3,Is the horizontal distance between the light source 11 and the right end of the diffusion plate 3.
The decreasing angle of the adjacent first planes 311 is:
In the formula, At a decreasing angle to the first plane 311,The number of microprisms 31.
The first plane 311 of the second microprism 31 forms an angle with the light-emitting surfaceThe method comprises the following steps:
the first plane 311 of the third microprism 31 forms an angle with the light-emitting surface The method comprises the following steps:
and so on.
The included angle between the first second plane 312 and the light emitting surface, that is, the included angle between the first microprism 31 and the light emitting surface, is:
In the formula, Is the angle between the first and second planes 312 and the light-emitting surface;
the included angle between the last second plane 312 arranged along the first direction and the light-emitting surface, that is, the included angle between the last microprism 31 and the light-emitting surface is:
In the formula, An included angle between the last second plane 312 and the light-emitting surface;
The decreasing angle of the adjacent second plane 312 is:
In the formula, Is a decreasing angle of the second plane 312.
The second plane 312 of the second microprism 31 forms an angle with the light-emitting surfaceThe method comprises the following steps:
the second plane 312 of the third microprism 31 forms an angle with the light-emitting surface The method comprises the following steps:
and so on.
When light is obliquely incident, refraction occurs at the junction of the two media, and the propagation direction changes. Therefore, the light emitted from the light source 11 is refracted and deflected on both the incident surface and the exit surface of the diffusion plate 3. The angle of the first plane 311 and the second plane 312 of the microprism 31 is reasonably designed to deflect the outgoing light.
By setting the angle between the first plane 311 and the second plane 312 of each microprism 31 in accordance with the above conditions, the generation of ineffective polarization can be reduced as much as possible, and the polarization effect of the diffusion plate 3 for deflection in the first direction can be improved.
It should be understood that the polarizing optical system of the embodiments of the present invention is applied to a cabinet lighting device,AndThe deflection angles are different according to different values, and the deflection angles in different environments can be designed according to actual requirements, so that the deflection angles are adjustedAndIs a value of (a). For the bathroom scene, the value ranges of the bathroom scene can be the following value ranges:
the value range of the product is 30 mm-50 mm, The value range of the product is 5 mm-15 mm,The value range of the product is 25 mm-45 mm,The value range of the product is 15 mm-25 mm,The value range of the product is 30-70,The range of the value is 25-35 degrees,The range of the value of the (C) is 80-120 degrees.
In addition, a small amount of diffusion powder can be added into the diffusion plate 3, so that the emergent light is diffusely scattered, and the effect of softness and no dazzling of the light is achieved.
Further, the second plane 312 of the current microprism 31 is connected to the first plane 311 of the next microprism 31 in the first direction.
Specifically, each of the microprisms 31 is connected to each other and closely connected to be discharged closely on the incident surface of the diffusion plate 3, thereby improving the surface utilization efficiency.
In some embodiments, the main optical axis of the light source board 1 is biased towards the first direction, and an included angle between the main optical axis and the vertical direction is:
In the formula, Is the included angle between the main optical axis and the vertical direction,Is the width of the diffusion plate 3,For the horizontal distance between the light source 11 and one end of the diffusion plate 3,Is the vertical distance between the light source 11 and the diffusion plate 3.
Specifically, the vertical direction is the Y direction, which is perpendicular to the light emitting surface of the polarizing optical system, and by obliquely setting the main optical axis according to the above, the main optical axis of the light source plate 1 can be irradiated to the center position of the diffusion plate 3, so that the light which cannot be directly irradiated to the diffusion plate 3 is mainly reduced, more light can be irradiated to the diffusion plate 3 as much as possible, and excessive energy loss is avoided.
In some embodiments, the polarizing optical system further includes a first reflecting plate 41, the first reflecting plate 41 is disposed at a left side area between the diffusion plate 3 and the light source plate 1, and a side of the first reflecting plate 41 near the light source 11 is provided with a first reflecting surface for reflecting light irradiated to the left side area onto the diffusion plate 3.
Further, a second reflecting plate 42 may be further provided, the second reflecting plate 42 being provided in a right side area between the diffusion plate 3 and the light source plate 1, the second reflecting plate 42 being provided with a second reflecting surface on a side close to the light source 11 for reflecting light irradiated to the right side area onto the diffusion plate 3.
The first reflecting plate 41 and the second reflecting plate 42 may be provided separately or simultaneously.
The diffusion plates 3 of the first reflecting plate 41 and the second reflecting plate 42 are formed by adopting an extrusion molding process, and are made of aluminum profiles or plastics.
The first reflecting surface receives left side light, the second reflecting surface receives right side light, and in order to increase the reflecting efficiency, the surfaces of the first reflecting surface and the second reflecting surface are polished, electroplated reflecting coatings are added, or matte treatment is carried out, and a reflecting film can be additionally adhered.
The light emitted from the light source 11 is divided into three parts, i.e., left side light, middle light and right side light. The middle light is directly emitted to the diffusion plate 3, the left light is emitted to the first reflecting surface of the first reflecting plate 41, and the right light is emitted to the second reflecting surface of the second reflecting plate 42.
The left side light irradiates the first reflecting surface to reflect, and the direction of reflected light is deviated from the Y axis to the X axis, so that the light deflection is realized.
The right side light irradiates the second reflecting surface to reflect, and the direction of the reflected light is Y-axis deflection X-axis, so that the light deflection is realized.
By providing the first reflecting surface and the second reflecting surface, the left side light and the right side light which cannot directly irradiate the diffusion plate 3 can be effectively utilized, the energy utilization efficiency is improved, and the illumination effect is enhanced.
Further, the first reflecting surface may be a plane or a curved surface, and the second reflecting surface may be a plane or a curved surface.
In an example, the first reflecting surface is a plane, the curvature is 0, the shape of the second reflecting surface is a curved surface with a curvature change, and the shape gradually decreases from one side close to the light source 11 to the other side far from the light source 11, that is, the curvature value close to the light source 11 is large, and the curvature value far from the light source 11 gradually decreases.
In another example, the first reflecting surface and the second reflecting surface are curved surfaces with changing curvature, and gradually increase from one side close to the light source 11 to the other side far from the light source 11, that is, the curvature value of the curved surface close to the light source 11 is small, and the curvature value of the curved surface far from the light source 11 gradually increases.
The light-emitting effect of the curved surface is better than that of the plane, and the curvature change of the first reflecting surface and the second reflecting surface is different, so that light rays can be deflected to the positive direction of the X axis, and polarization is facilitated.
In the polarizing optical system of the embodiment of the invention, light is emitted from the light source 11, is irradiated onto the diffusion plate 3, the first reflection surface and the second reflection surface after being polarized and converged for the first time by the polarizing lens 2, the light irradiated onto the first reflection surface and the second reflection surface is reflected onto the diffusion plate 3, and is polarized and emitted again by the micro prism 31 on the diffusion plate 3, so that the light is deflected in the first direction, and the light is deflected for the second time by the matching of the polarizing lens 2 and the diffusion plate 3, so that the emitted light can be deflected in the first direction greatly.
By the angle design of the first plane 311 and the second plane 312 of the microprism 31, the light can be irradiated to the first plane 311 as much as possible, thereby avoiding invalid polarized light and improving the deflection effect.
By obliquely arranging the light source plate 1, more light emitted by the light source 11 can be irradiated onto the diffusion plate 3, and light waste is avoided.
By providing the first reflecting surface and the second reflecting surface, light which cannot directly irradiate the diffusion plate 3 can be effectively utilized, and the illumination effect is enhanced.
The embodiment of the invention also provides a mirror cabinet lighting device, as shown in fig. 9, comprising the polarized optical system according to any one of the above embodiments. The mirror cabinet lighting device further comprises a shell 5, and the polarized optical system is arranged in the shell 5.
The embodiment of the invention also provides a mirror cabinet, which comprises the mirror cabinet lighting device in the embodiment.
Specifically, as shown in fig. 10, the mirror cabinet further includes a mirror cabinet body, and the mirror cabinet lighting device is disposed at an edge area of the mirror cabinet body. For example, the light emitted from the emitting surface of the diffusion plate 3 is deflected and irradiates the middle part of the mirror cabinet body, so that the user can conveniently illuminate.
Although the exemplary embodiments and their advantages have been described in detail, those skilled in the art can make various changes, substitutions, and alterations to these embodiments without departing from the spirit and scope of the invention as defined by the claims.

Claims (7)

1. A polarizing optical system, comprising:
a light source plate (1), a polarized lens (2) and a diffusion plate (3) which are sequentially arranged along the light emitting direction;
a light source (11) is arranged on the light source plate (1), and the light source (11) is positioned in the incidence plane of the polarized lens (2);
The polarized lens (2) is arranged on the light source plate (1), the curvature of an incident surface of the polarized lens (2) gradually decreases from the left end of the polarized lens (2) to the right end of the polarized lens (2), and the curvature of an emergent surface of the polarized lens (2) gradually increases from the left end of the polarized lens (2) to the right end of the polarized lens (2) and is used for deflecting light emitted by the light source (11) towards a first direction, wherein the first direction is parallel to the emergent surface of the polarized optical system;
the incidence surface of the diffusion plate (3) is provided with a plurality of microprisms (31) which are arranged along a first direction and are used for deflecting the light rays emitted by the polarized lens (2) towards the first direction again;
the microprism (31) comprises a first plane (311) and a second plane (312), the first plane (311) and the second plane (312) being connected to form a wedge, the tip of the wedge being inclined to the first direction;
The first plane (311) is an optical plane, and the second plane (312) is a non-optical plane;
The included angle between the first plane (311) and the light-emitting surface and the included angle between the second plane (312) and the light-emitting surface are gradually decreased along a first direction, and the included angle between the first plane (311) and the light-emitting surface, which are arranged along the first direction, is as follows:
In the formula, Is the included angle between the first plane (311) and the light-emitting surface,Is a horizontal distance between the light source (11) and one end of the diffusion plate (3),Is the refractive index of the diffusion plate (3),Is the vertical distance of the light source (11) from the diffusion plate (3);
the included angle between the last first plane (311) arranged along the first direction and the light emitting surface is:
In the formula, Is the last included angle between the first plane (311) and the light-emitting surface,A horizontal distance between the light source (11) and the other end of the diffusion plate (3);
the decreasing angle of the adjacent first planes (311) is:
In the formula, For a decreasing angle of said first plane (311),Is the number of microprisms (31);
the included angle between the first second plane (312) and the light emitting surface, which are arranged along the first direction, is:
In the formula, Is the included angle between the first second plane (312) and the light-emitting surface;
The included angle between the last second plane (312) arranged along the first direction and the light emitting surface is:
In the formula, An included angle between the last second plane (312) and the light-emitting surface;
The decreasing angle of the adjacent second plane (312) is:
In the formula, Is a decreasing angle of the second plane (312).
2. The polarized optical system according to claim 1, wherein the main optical axis of the light source plate (1) is biased toward the first direction, and an angle between the main optical axis and the vertical direction is:
In the formula, For the included angle between the main optical axis and the vertical direction,Is the width of the diffusion plate (3),Is a horizontal distance between the light source (11) and one end of the diffusion plate (3),Is the vertical distance of the light source (11) from the diffusion plate (3).
3. The polarized optical system according to claim 1, further comprising a first light reflecting plate (41), the first light reflecting plate (41) being disposed in a left side area between the diffusion plate (3) and the light source plate (1), a first reflecting surface being provided on a side of the first light reflecting plate (41) close to the light source (11) for reflecting light irradiated to the left side area onto the diffusion plate (3);
And/or a second reflecting plate (42), wherein the second reflecting plate (42) is arranged in a right side area between the diffusion plate (3) and the light source plate (1), and a second reflecting surface is arranged on one side of the second reflecting plate (42) close to the light source (11) and used for reflecting light rays irradiated to the right side area onto the diffusion plate (3).
4. A polarizing optical system according to claim 3, wherein the first reflecting surface is a plane;
And/or, the second reflecting surface is a plane.
5. A polarizing optical system according to claim 3, wherein the curvature of the first reflecting surface gradually increases from one side closer to the light source (11) to the other side farther from the light source (11);
and/or the curvature of the second reflecting surface gradually decreases from one side close to the light source (11) to the other side far from the light source (11).
6. A mirror cabinet lighting device comprising the polarized optical system according to any one of claims 1 to 5.
7. A mirror cabinet comprising the mirror cabinet lighting device of claim 6.
CN202411262291.1A 2024-09-10 2024-09-10 Polarizing optical system, mirror cabinet lighting device and mirror cabinet Active CN118775809B (en)

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CN214009126U (en) * 2020-12-24 2021-08-20 深圳市百康光电有限公司 Polarizing lens and high-pole lamp
CN218095589U (en) * 2022-07-01 2022-12-20 厦门通士达照明有限公司 Lighting lamp

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JP5626060B2 (en) * 2011-03-23 2014-11-19 市光工業株式会社 Vehicle lighting
CN207301390U (en) * 2017-07-19 2018-05-01 华格照明灯具（上海）有限公司 A kind of light guide plate and illuminating module
CN208475112U (en) * 2018-08-09 2019-02-05 华格照明科技（上海）有限公司 A kind of lamps and lanterns and showcase
CN113219731B (en) * 2021-05-21 2022-08-12 厦门天马微电子有限公司 Backlight module and display device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1281556A (en) * 1997-12-11 2001-01-24 美国3M公司 Planar polarizer for LCD projectors
CN214009126U (en) * 2020-12-24 2021-08-20 深圳市百康光电有限公司 Polarizing lens and high-pole lamp
CN218095589U (en) * 2022-07-01 2022-12-20 厦门通士达照明有限公司 Lighting lamp

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