CN105588077B - Optical lens and projecting lamp - Google Patents
Optical lens and projecting lamp Download PDFInfo
- Publication number
- CN105588077B CN105588077B CN201610052750.2A CN201610052750A CN105588077B CN 105588077 B CN105588077 B CN 105588077B CN 201610052750 A CN201610052750 A CN 201610052750A CN 105588077 B CN105588077 B CN 105588077B
- Authority
- CN
- China
- Prior art keywords
- light
- guide module
- emitting element
- light guide
- optical lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 68
- 239000004417 polycarbonate Substances 0.000 claims description 6
- 229920000515 polycarbonate Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 15
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000009537 plain noodles Nutrition 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
The disclosure is directed to optical lenses and projecting lamp.The optical lens includes: light guide module；Wherein, the light guide module has the central channel to accommodate each light-emitting component close to the side of light-emitting component, and the groove face of the central channel is incidence surface；There is the serrated step of at least two concentric circles on the groove face of the central channel on position corresponding with each light-emitting component respectively, wherein the center of circle of the serrated step is upright projection point of the center of corresponding light-emitting component on the groove face；Side of the light guide module far from the light-emitting component includes horizontal light-emitting surface.In the technical solution, by the leaded light of the serrated step of the concentric circles on the incidence surface of light guide module, the light beam Relatively centralized that light-emitting component can be made to launch, and center light intensity can be reduced, enhance luminous intensity in peripheral region, so that illumination is more evenly.
Description
Technical Field
The present disclosure relates to smart home technologies, and in particular, to an optical lens and a projector.
Background
A Light Emitting Diode (LED) is a solid semiconductor device capable of converting electric energy into visible Light, and can directly convert electricity into Light. Because the LED has the advantages of small volume, low power consumption, long service life, various color temperatures, environmental protection and the like, the LED gradually replaces fluorescent lamps and incandescent lamps and becomes a fourth-generation lighting source.
In order to enhance the use efficiency and the luminous efficiency of the LED lamp, an LED lens can be added. The LED lens is closely associated with the LED, and the lens may be used to alter the light field distribution of the LED. The light guide module of the current LED lens is provided with a concave surface at one side close to an LED lamp bead, and light rays right below an LED smooth surface can be dispersed all around through the concave surface, so that the light intensity of the peripheral area is increased, the light intensity of the central area is reduced, and the illumination uniformity is improved.
Disclosure of Invention
The disclosed embodiments provide an optical lens and a projection lamp. The technical scheme is as follows:
according to a first aspect of embodiments of the present disclosure, there is provided an optical lens, which may include: a light guide module; wherein,
a central groove for accommodating each light-emitting element is formed in one side, close to the light-emitting element, of the light guide module, and the groove surface of the central groove is a light incident surface;
at least two concentric sawtooth steps are respectively arranged on the groove surface of the central groove at positions corresponding to the light-emitting elements, wherein the circle center of each sawtooth step is a vertical projection point of the center of the corresponding light-emitting element on the groove surface;
one side of the light guide module, which is far away from the light-emitting element, comprises a horizontal light-emitting surface.
It can be seen that there are two more concentric circles's sawtooth steps on the income plain noodles of light guide module, and through the leaded light of the sawtooth step of concentric circles, can make the light beam that light emitting component launches concentrate relatively to can reduce central luminous intensity, strengthen regional internal light intensity around, make illumination more even.
In one embodiment, a center line of the central groove is on the same plane as a center of each of the light emitting elements.
Since the center line of the center groove is on the same plane as the center of each light emitting element, the center groove can be symmetrical about the center of the light emitting element, so that the optical lens is beautiful and simple to manufacture.
In one embodiment, the optical lens further comprises: the positioning module is connected with the light guide module; wherein,
the positioning module is used for being connected with a lamp panel provided with each light-emitting element.
Therefore, the optical lens can be matched with the light-emitting element for use through the positioning module, and the optical lens and the lamp panel can form the projection lamp together.
In one embodiment, there are two positioning modules located at two ends of the light guide module, the first positioning module has at least one threaded positioning hole, and the second positioning module has a buckle connected to the lamp panel through the threaded positioning hole and the buckle.
Like this, through the one end buckle, one end screw thread locating hole is connected with the lamp plate for it is more nimble to connect, and easy adjustment can ensure that the centre of a circle of sawtooth step can be on the central line of leaded light module.
In one embodiment, the light guide module is made of materials including: polycarbonate PC.
Thus, the optical lens can be manufactured by adopting an injection molding process, and the production efficiency is higher.
In one embodiment, the light guide module directly transmits a first light ray emitted by each of the light emitting elements, wherein an angle between the first light ray and a corresponding light ray vertically downward from the light emitting element is 0 degree.
Therefore, the central light emitted by the light-emitting element can be directly emitted from the optical lens, and the intensity of the central light is ensured.
In one embodiment, the inclined plane of the sawtooth step of the first concentric circle in the light guide module is a refraction interface of the second light emitted by the corresponding light emitting element, so that the second light enters the light guide module through the refraction of the corresponding inclined plane and is refracted out from the light exit surface of the light guide module, wherein an angle between the second light and the corresponding light vertically downward from the light emitting element is greater than 0 degree and smaller than or equal to a first setting angle.
Therefore, light emitted by the light-emitting element and close to the center can be diffused to the periphery through light guiding of the inclined plane of the sawtooth step of the first concentric circle, and the light intensity of the center is reduced.
In one embodiment, the first set angle is determined according to the medium density of the light guide module and the inclination angle of the sawtooth step.
Therefore, different application scenes can correspond to different inclination angles of the sawtooth steps, and accordingly, the corresponding first set angle is determined, so that the degree of reducing the central light intensity can be further determined, and the flexibility of improving the light field distribution according to the application scenes is improved.
In one embodiment, the inclined plane of the sawtooth step of the second concentric circle in the light guide module is a refraction interface of a third light ray emitted by the corresponding light emitting element, so that the third light ray enters the light guide module through the refraction of the corresponding inclined plane, is totally reflected by the side surface of the light guide module, and is refracted out from the light exit surface, wherein an angle between the third light ray and the corresponding vertically downward light ray of the light emitting element is greater than a first set angle and less than or equal to a second set angle.
Therefore, through the inclined plane of the sawtooth step of the second concentric circle and the light guide of the side face of the light guide module, the light rays emitted by the light emitting element and far away from the center can be collected into the area to be irradiated, and the light path is relatively concentrated.
In one embodiment, the second setting angle is determined according to a light emitting area of the light emitting element.
Therefore, different second setting angles can be determined according to different light-emitting elements, the degree of gathering light concentration intensity is further determined, and flexibility of improving light field distribution according to application scenes is improved.
According to a second aspect of embodiments of the present disclosure, there is provided a projector lamp, which may include:
a lamp panel;
at least one light emitting element mounted on the lamp panel;
and the optical lens is connected with the lamp panel, wherein the optical lens is as described above.
It can be seen that the light guide module of the optical lens in the projector lamp is provided with two concentric sawtooth steps on the light incident surface, and light beams emitted by the light emitting element in the projector lamp can be relatively concentrated by guiding light through the concentric sawtooth steps, so that the central light intensity can be reduced, the light intensity in the surrounding area can be enhanced, and the illumination is more uniform.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the technical scheme, the light guide module in the optical lens is provided with the sawtooth steps of the two concentric circles on the light incident surface, light beams emitted by the light emitting element can be relatively concentrated through light guide of the sawtooth steps of the concentric circles, central light intensity can be reduced, light intensity in the surrounding area is enhanced, and illumination is more uniform.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a schematic diagram illustrating a structure of an optical lens according to an exemplary embodiment.
FIG. 2 is a schematic cross-sectional view of a projector lamp according to an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating an optical path of a first light ray according to an exemplary embodiment.
Fig. 4 is a schematic diagram illustrating an optical path of a second light ray according to an exemplary embodiment.
FIG. 5 is a schematic diagram illustrating an optical path of a third light ray according to an exemplary embodiment.
FIG. 6 is a schematic axial cross-sectional view of a projector lamp according to an exemplary embodiment.
FIG. 7 is a schematic diagram illustrating the illuminance of a projector lamp according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the technical scheme provided by the embodiment of the disclosure, the light incident surface of the central groove of the optical lens is provided with two saw-tooth steps of multiple concentric circles, and light beams emitted by the light emitting element in the projection lamp can be relatively concentrated by guiding light through the saw-tooth steps of the concentric circles, so that the central light intensity can be reduced, the light intensity in the peripheral area can be enhanced, and the illumination is more uniform.
Fig. 1 is a schematic structural diagram illustrating an optical lens according to an exemplary embodiment, as shown in fig. 1, the optical lens includes: the light guide module 1000.
The light guide module 1000 has a central groove 1100 for accommodating each light emitting device on a side thereof close to the light emitting device, and a groove surface 1110 of the central groove 1100 is a light incident surface.
At least two concentric saw-tooth steps 1111 are respectively arranged on the groove surface 1110 of the central groove 1100 at positions corresponding to each light-emitting element, wherein the center of the saw-tooth step 1111 is the vertical projection point of the center of the corresponding light-emitting element on the groove surface.
One side of the light guide module 1000 away from the light emitting element includes a horizontal light emitting surface.
It can be seen that there are two more concentric circles's sawtooth steps on the income plain noodles of light guide module, and through the leaded light of the sawtooth step of concentric circles, can make the light beam that light emitting component launches concentrate relatively to can reduce central luminous intensity, strengthen regional internal light intensity around, make illumination more even.
Because the optical lens is generally closely associated with the light-emitting elements, the two types of light-emitting elements can be used in a matched manner to form a projection lamp, and the optical lens can be connected with a lamp panel provided with each light-emitting element to form the projection lamp. Therefore, the optical lens in the embodiments of the present disclosure further includes: the positioning module is connected with the light guide module; wherein, the orientation module is used for being connected with the lamp plate that is equipped with every light emitting component. As shown in fig. 1, the optical lens includes: a light guide module 1000 and a positioning module 2000 connected to the light guide module 1000. And the positioning module 2000 is used to connect with the lamp panel equipped with each light emitting element.
Of course, the optical lens can be connected with the lamp panel provided with each light-emitting element to form the projection lamp, and therefore, the embodiment of the disclosure also discloses the projection lamp.
FIG. 2 is a schematic cross-sectional view of a projector lamp according to an exemplary embodiment. As shown in fig. 2, in the embodiment of the present disclosure, the projection lamp includes: the lighting unit includes a lamp panel 210, at least one light emitting element 220 mounted on the lamp panel 210, and an optical lens 230 connected to the lamp panel 210.
Wherein, the positioning module in the optical lens 230 may be connected with the lamp panel 210. The specific structure of the optical lens 230 in the embodiment of the present disclosure may be as shown in fig. 1. That is, the optical lens may include: the light guide module and the positioning module are connected with the light guide module; the light guide module is provided with a light guide surface, wherein one side of the light guide module close to the light emitting elements is provided with a central groove for accommodating each light emitting element, and the groove surface of the central groove is a light incident surface; at least two concentric sawtooth steps are respectively arranged on the groove surface of the central groove at the position corresponding to each light-emitting element, wherein the circle center of each sawtooth step is the vertical projection point of the center of the corresponding light-emitting element on the groove surface; one side of the light guide module, which is far away from the light-emitting element, comprises a horizontal light-emitting surface; the positioning module is used for being connected with a lamp panel provided with each light-emitting element.
In the embodiment of the disclosure, when the projection lamp is a linear projection lamp, that is, the light emitting elements on the lamp panel in the projection lamp are linearly arranged, and the center of each light emitting element is on a straight line, because the optical lens is used in cooperation with the light emitting elements, the center line of the center groove of the light guide module of the optical lens and the center of each light emitting element can be on the same plane. In this way, the central slot can be symmetrical about the centre of the light-emitting element, making the optical lens aesthetically pleasing and simple to manufacture.
Since the central groove is used for accommodating the light-emitting element, the width and the depth of the central groove correspond to the size of the light-emitting element and the light-emitting area of the light-emitting element. The length of the central slot is related to the number of the light-emitting elements arranged on the lamp panel. Only one light-emitting element is arranged on the lamp panel, and the central groove is shorter, while the central groove is longer when a plurality of light-emitting elements are arranged on the lamp panel.
In the embodiments of the present disclosure, the positioning module and the light guide module may be integrally formed or fixedly connected. The positioning module can enable the optical lens to be connected with the projection lamp
The positioning module can be connected with the lamp panel through one or two modes of the threaded positioning hole and the clamping. For example: the positioning modules are two and are respectively positioned at two ends of the light guide module, at least one thread positioning hole is formed in the first positioning module, at least one thread positioning hole is also formed in the second positioning module, and therefore the first positioning module is connected with the lamp panel through the thread positioning holes, or at least one thread positioning hole is formed in the first positioning module, and the second positioning module is buckled and is connected with the lamp panel through the thread positioning holes and the buckles.
Wherein, the positioning module passes through the screw thread locating hole and the buckle is connected the back with the lamp plate for it is more nimble to connect, and easy adjustment can ensure that the centre of a circle of sawtooth step can be on the central line of leaded light module. Thus, as shown in fig. 1, the positioning module 2000 may include a threaded positioning hole 2100 and a snap 2200. The number of the threaded positioning holes 2100 may be one, two or more, and the threaded positioning holes 2100 and the fasteners 2200 are respectively located at two ends of the positioning module.
In the embodiment of the present disclosure, the light emitting element used in cooperation with the optical lens may be a fourth generation light source, for example: LED or laser light source elements. The optical lens may be made of various materials, such as: a silicone lens, a polymethylmethacrylate lens, a Polycarbonate (PC) lens, or a glass lens. The polycarbonate PC can be integrally molded by adopting an injection molding process, so that the process of producing the optical lens is simpler and the production efficiency is higher.
Because the light incoming surface of the light guide module is provided with the sawtooth steps of two concentric circles, the light guide of the sawtooth steps of the concentric circles can improve the light field distribution of the light-emitting element, so that light beams emitted by the light-emitting element are relatively concentrated, the central light intensity can be reduced, the light intensity in the surrounding area is enhanced, and the illumination is more uniform.
Moreover, the central groove can accommodate each light-emitting element, the light beam of the light-emitting element is circularly diverged by taking the center of the light-emitting element as a starting point, and at least two concentric circular sawtooth steps are respectively arranged on the groove surface of the central groove at the position corresponding to each light-emitting element, so that the improvement of the sawtooth steps on the light field distribution of the light-emitting elements can be described by taking one light-emitting element and the corresponding sawtooth step as an example.
Fig. 3 is a schematic diagram illustrating an optical path of a first light ray according to an exemplary embodiment. As shown in fig. 3, the optical lens has a partially enlarged axial section, and includes: the light emitting device 220, the optical lens 230, the concentric saw-tooth step 1111, and the first light ray 310. The angle between the first light 310 and the light emitted from the light emitting device is 0 degree, that is, the first light 310 is the light emitted from the light emitting device. The first light 310 is irradiated vertically downward, and can enter vertically from the center of the corresponding concentric saw-tooth step 1111 of the optical lens and vertically pass out from the light exit surface of the optical lens light guide module.
Therefore, the light guide module directly transmits the first light emitted by each light emitting element, so that the central light emitted by the light emitting element can be directly emitted from the optical lens, and the intensity of the central light is ensured.
Fig. 4 is a schematic diagram illustrating an optical path of a second light ray according to an exemplary embodiment. As shown in fig. 4, the optical lens has a partially enlarged axial cross section, and includes: a light emitting element 220, an optical lens 230, concentric saw-tooth steps 1111, and a second light ray 410. The angle between the second light ray 410 and the corresponding light ray vertically downward from the light emitting element is θ, and the inclined plane of the first concentric circular sawtooth step 1111 in the light guide module forms an angle with the horizontal plane, i.e., the inclined angle of the sawtooth step is Φ. Thus, the second light ray 410 irradiates the inclined surface of the sawtooth step 1111 of the first concentric circle, enters the light guide module through the corresponding inclined surface, and is refracted out of the light exit surface of the light guide module. Since the inclination angle of the sawtooth step is Φ and the light-emitting surface of the light guide module is a horizontal plane, the angle between the second light refracted from the light-emitting surface of the light guide module and the vertical plane is not θ, but θ + κ Φ, where κ is related to the refractive index of the optical lens, i.e. the medium density of the light guide module. It can be seen that the second light rays diverge towards the surroundings after passing through the optical lens.
Therefore, the inclined plane of the sawtooth step of the first concentric circle in the light guide module is a refraction interface of the second light emitted by the corresponding light emitting element, so that the second light enters the light guide module through the refraction of the corresponding inclined plane and is refracted out of the light exit surface of the light guide module. Therefore, light emitted by the light-emitting element and close to the center can be diffused to the periphery through light guide of the inclined plane of the sawtooth step of the first concentric circle, and the light intensity of the center is reduced.
After the second light beam irradiates the inclined plane of the sawtooth step of the first concentric circle, the second light beam enters the light guide module through the corresponding inclined plane, and may be refracted to the light emitting surface of the light guide module or may be refracted to the side surface of the light guide module, which is related to the size of theta, when theta is larger, the second light beam may be refracted to the side surface of the light guide module, so theta needs to be smaller than a certain angle, here, the angle is a first set angle, the angle between the second light beam and the corresponding light beam of the light emitting element which is vertically downward is larger than 0 degree and smaller than or equal to the first set angle, namely theta is larger than 0 degree and smaller than or equal to α degree.
The first set angle is determined based on the dielectric density of the light guide module and the slope angle of the sawtooth step, and more particularly, is related to the size of the slope angle Φ of the sawtooth step, the dielectric density of the light guide module, and the size of the central groove, thus, when the dielectric density of the light guide module, the size of the central groove, and the slope angle Φ of the sawtooth step are determined, then the first set angle α can be determined.
Of course, the first setting angle α can be determined according to the application scenario, and then the inclination angle of the sawtooth step is determined to be Φ according to the medium density of the light guiding module of the first setting angle α and the size of the central slot, for example, if the light of the application scenario needs to be greatly diffused to the periphery, the inclination angle Φ of the sawtooth step can be designed to be larger, and the first setting angle α will also become larger.
FIG. 5 is a schematic diagram illustrating an optical path of a third light ray according to an exemplary embodiment. As shown in fig. 5, the optical lens has a partially enlarged axial cross section, and includes: the light emitting device 220, the optical lens 230, the concentric saw-tooth step 1111, and the third light ray 510. The angle between the third light ray 510 and the corresponding light ray vertically downward from the light emitting element is γ, and the included angle between the inclined plane of the sawtooth step 1111 of the second concentric circle in the light guiding module and the horizontal plane, i.e. the inclined angle of the sawtooth step, is Φ. Thus, the third light ray 510 irradiates the inclined surface of the sawtooth step 1111 of the second concentric circle, and then enters the light guide module through the corresponding inclined surface refraction, and then emits to the side surface of the light guide module. Thus, the light path of the third light ray is changed, so that the light rays originally diffused to the periphery are gathered to the center.
Therefore, the inclined plane of the sawtooth step of the second concentric circle in the light guide module is a refraction interface of the third light emitted by the corresponding light emitting element, so that the third light enters the light guide module through the refraction of the corresponding inclined plane and is refracted out from the light emergent surface after being totally reflected by the side surface of the light guide module, wherein the angle between the second light and the vertical downward light of the corresponding light emitting element is greater than a first set angle and smaller than or equal to a second set angle. Therefore, through the inclined plane of the sawtooth step of the second concentric circle and the light guide of the side face of the light guide module, the light rays emitted by the light emitting element and far away from the center can be collected into the area to be irradiated, and the light path is relatively concentrated.
In one embodiment, the second setting angle is determined based on the light emitting area of the light emitting element, and the second setting angle is β, then γ is greater than the first setting angle α and less than or equal to the second setting angle β. thus, different second setting angles are determined based on the light emitting element, and the degree of the collected light concentration intensity is further determined, which increases the flexibility of improving the light field distribution according to the application scene.
In the embodiment of the present disclosure, the sawtooth step of the first concentric circle and the sawtooth step of the second concentric circle may be the same sawtooth step or may be different sawtooth steps. There may be one, two or more first concentric circular saw tooth steps in the central groove of the optical lens, of course, there may also be one, two or more second concentric circular saw tooth steps. The inclination angle of the sawtooth step of each concentric circle may be the same, and may also be different according to the requirements of the application scene on the light field distribution, the size of the central groove, the power of the light emitting element, and the like.
In this embodiment, the light emitting element is an LED, and the light emitting area of the LED determines that the light emitting angle is 110 °, and thus, the second setting angle β is 55 °.
FIG. 6 is a schematic axial cross-sectional view of a projector lamp according to an exemplary embodiment. As shown in fig. 6, includes: a lamp panel 210, an LED220, and an optical lens 230.
The angle between the first light and the corresponding light of the light-emitting element which vertically faces downwards is 0 degrees, namely, the light beam at the central point is vertically irradiated downwards, and the area of the area is small.
The angle between the second light and the corresponding light which vertically faces downwards of the light-emitting element is larger than 0 degrees and smaller than or equal to 40 degrees, at the moment, the inclined plane of the sawtooth step of the first concentric circle in the light guide module is a refraction interface of the second light emitted by the corresponding light-emitting element, so that the second light enters the light guide module through the corresponding inclined plane in a refraction mode and is refracted out from the light-emitting surface of the light guide module. It can be seen that the light beam in the range of 0 ° to 40 ° is refracted through the air in the inner cavity, enters the lens, and is then refracted out by the lens. Thus, the light beam near the center can be relatively diverged to the periphery, thereby reducing the center brightness.
The angle between the third light and the corresponding light which vertically faces downwards of the light-emitting element is greater than 40 degrees and less than or equal to 55 degrees, at the moment, the inclined plane of the sawtooth step of the second concentric circle in the light guide module is a refraction interface of the third light emitted by the corresponding light-emitting element, so that the third light enters the light guide module through the refraction of the corresponding inclined plane and is refracted out from the light-emitting surface after being totally reflected by the side surface of the light guide module. It can be seen that light beams in the range of 40 ° to 55 ° are refracted into the lens first and then emitted via total reflection. Therefore, the light beams originally positioned at the periphery can be converged, so that the illumination area is controlled in a limited use area.
The illuminance of the projection lamp in the embodiment is tested, and it can be determined that the illuminance of the position 30cm away from the central point right below the projection lamp is obviously improved.
FIG. 7 is a schematic diagram illustrating the illuminance of a projector lamp according to an exemplary embodiment. As shown in fig. 7, the fan shape is an illumination area centered directly below the projector lamp and having a radius of 0.3m, and the data therein is the illumination value of each point. According to the illumination value data, after light is guided through the optical lens, the illumination uniformity in the LED lamp illumination area is determined to be less than 2(1104/610 is equal to 1.8), so that the phenomenon of uneven brightness can be effectively avoided, and visual fatigue is relieved.
Therefore, in the embodiment, because the light incident surface of the light guide module of the optical lens is provided with the two concentric sawtooth steps, the light guide by the sawtooth steps of the concentric circles can relatively concentrate the light path, so that the light outside the effective irradiation area can be collected into the area to be irradiated, and the waste of the light source is avoided; in addition, the central light intensity can be reduced, the light intensity in the surrounding area is enhanced, and the illumination is more uniform; the phenomenon that light rays in blank areas between the lamp beads are weak can be compensated, and light spots can be avoided.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (9)
1. An optical lens, comprising: a light guide module; wherein,
a central groove for accommodating each light-emitting element is formed in one side, close to the light-emitting element, of the light guide module, and the groove surface of the central groove is a light incident surface;
at least two concentric sawtooth steps are respectively arranged on the groove surface of the central groove at positions corresponding to the light-emitting elements, wherein the circle center of each sawtooth step is a vertical projection point of the center of the corresponding light-emitting element on the groove surface;
one side of the light guide module, which is far away from the light-emitting element, comprises a horizontal light-emitting surface;
the inclined plane of the sawtooth step of the first concentric circle in the light guide module is a refraction interface of the second light emitted by the corresponding light-emitting element, so that the second light enters the light guide module through the refraction of the corresponding inclined plane and is refracted out from the light emergent surface of the light guide module, wherein the angle between the second light and the corresponding light vertically downward from the light-emitting element is greater than 0 degree and less than or equal to a first set angle;
the inclined plane of the sawtooth step of the second concentric circle in the light guide module is a refraction interface of a third light ray emitted by the corresponding light-emitting element, so that the third light ray enters the light guide module through the refraction of the corresponding inclined plane and is refracted out from the light emergent surface after being totally reflected by the side surface of the light guide module, wherein the angle between the third light ray and the corresponding vertically downward light ray of the light-emitting element is larger than a first set angle and smaller than or equal to a second set angle.
2. The optical lens of claim 1 wherein a centerline of the central groove is in the same plane as a center of each of the light emitting elements.
3. The optical lens of claim 1 or 2, further comprising: the positioning module is connected with the light guide module; wherein,
the positioning module is used for being connected with a lamp panel provided with each light-emitting element.
4. The optical lens of claim 3, wherein there are two positioning modules located at two ends of the light guide module, the first positioning module has at least one threaded positioning hole, and the second positioning module has a buckle, and is connected to the lamp panel through the threaded positioning hole and the buckle.
5. The optical lens of claim 1, wherein the light guide module is made of a material comprising: polycarbonate (PC).
6. The optical lens according to claim 1 or 2, wherein the light guide module directly transmits a first light emitted by each of the light emitting elements, and an angle between the first light and a corresponding light vertically downward from the light emitting element is 0 degree.
7. The optical lens of claim 1 wherein the first set angle is determined based on a dielectric density of the light guide module and a tilt angle of the sawtooth step.
8. The optical lens of claim 1 wherein the second set angle is determined based on a light emitting area of the light emitting element.
9. A projector lamp, comprising:
a lamp panel;
at least one light emitting element mounted on the lamp panel;
an optical lens connected with the lamp panel, wherein the optical lens is as claimed in any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052750.2A CN105588077B (en) | 2016-01-26 | 2016-01-26 | Optical lens and projecting lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610052750.2A CN105588077B (en) | 2016-01-26 | 2016-01-26 | Optical lens and projecting lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105588077A CN105588077A (en) | 2016-05-18 |
| CN105588077B true CN105588077B (en) | 2019-05-21 |
Family
ID=55927858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610052750.2A Active CN105588077B (en) | 2016-01-26 | 2016-01-26 | Optical lens and projecting lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105588077B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201401725Y (en) * | 2009-04-08 | 2010-02-10 | 一品国际科技股份有限公司 | Fresnel light-emitting diode lens and light-emitting diode assembly formed by Fresnel light-emitting diode lens |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956950B (en) * | 2009-07-15 | 2012-09-05 | 颖台科技股份有限公司 | Optical thin plate, manufacturing method thereof, and backlight module |
| EP2343578A1 (en) * | 2009-12-23 | 2011-07-13 | José Vicente Garcia Ortiz | A fresnel-type lens |
| CN103423701A (en) * | 2012-05-25 | 2013-12-04 | 惠州元晖光电股份有限公司 | Compound curved lens for LED (light-emitting diode) projection lamp |
| WO2015058983A1 (en) * | 2013-10-24 | 2015-04-30 | Koninklijke Philips N.V. | Optical configurations with two or more micro structured films |
-
2016
- 2016-01-26 CN CN201610052750.2A patent/CN105588077B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201401725Y (en) * | 2009-04-08 | 2010-02-10 | 一品国际科技股份有限公司 | Fresnel light-emitting diode lens and light-emitting diode assembly formed by Fresnel light-emitting diode lens |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105588077A (en) | 2016-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8556456B2 (en) | Light emitting device and luminaire | |
| KR101131152B1 (en) | Led diffusion lense, light diffusing sheet using it and light apparatus having it | |
| KR101440476B1 (en) | Optical element and illuminant device using the same | |
| JP6868016B2 (en) | Lighting system and how to generate light output | |
| CN106151924B (en) | A kind of spreadlight lens and LED bar graph lamp | |
| KR101833016B1 (en) | Light diffusion lens and Lighting fixtures having the same | |
| CN107614964B (en) | Light flux controlling member, light emitting device, and lighting device | |
| CN106164581B (en) | Illuminator | |
| CN105757610A (en) | Small-beam-angle and low-glare LED lens with square light spots | |
| US9010963B2 (en) | Lens member for directing light in a square pattern | |
| JP2016075833A (en) | Fresnel-lens optical system and lighting system using the optical system | |
| KR20150137959A (en) | Secondary optical element and light source module | |
| CN105333397B (en) | Polarizing lens and lighting lamp with same | |
| CN208546927U (en) | A kind of reflector | |
| US20210041080A1 (en) | Lens, Lens Group and Lamp | |
| CN105588077B (en) | Optical lens and projecting lamp | |
| CN213066003U (en) | Lens for generating linear light spots and LED lamp | |
| KR101683625B1 (en) | Automotive lamp using indirect lighting type | |
| CN209415237U (en) | A kind of blackboard lights | |
| JP2015111523A (en) | Lighting device and optical lens | |
| CN109416154A (en) | Asymmetric light distribution from lighting apparatus | |
| CN221881245U (en) | Lighting | |
| KR101191406B1 (en) | Led lamp device with distribution pattern of luminous intensity of incandescent lamp | |
| JP6914091B2 (en) | Light source device and lighting device | |
| JP6224451B2 (en) | LED light distribution control lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100085 Huarun Qingcai Street 68, Haidian District, Beijing, two stage, 9 floor, 01 rooms. Patentee after: BEIJING XIAOMI MOBILE SOFTWARE Co.,Ltd. Patentee after: Qingdao Yilai Intelligent Technology Co.,Ltd. Address before: 100085 Huarun Qingcai Street 68, Haidian District, Beijing, two stage, 9 floor, 01 rooms. Patentee before: BEIJING XIAOMI MOBILE SOFTWARE Co.,Ltd. Patentee before: Qingdao Yeelink Information Technology Co.,Ltd. |