TWI426304B - Lens - Google Patents

Description

lens

This invention relates to a lens and, more particularly, to a lens that provides a halo effect.

Illumination devices are indispensable daily necessities in daily life, changing people's lifestyles. Nowadays, in a general family or in public indoors, you can see the use of a variety of lighting devices, such as: fluorescent lamps, lighting , table lamps, chandeliers, neon lights, etc., the inconvenience caused by dim can be improved by lighting devices.

For different lighting devices, the applications are also different, such as: general fluorescent lamps, lighting lamps, table lamps, etc., which are used for general lighting, and some special-purpose lighting devices such as night lights, It is applied to the illumination provided by people when they fall asleep, and its luminous power is low, which is only for auxiliary use; the recessed lamp is embedded in the ceiling, floor or wall, etc., to provide special lighting.

In an embedded downlight design, light is emitted from one side of the ceiling, floor or wall, etc. toward the other side. For the user, the embedded design does not visually create a feeling of pressure on the foreign object. However, ceilings, floors or walls, etc., are relatively faint and uninteresting due to the inability to directly illuminate the light.

The present invention provides a lens that provides a halo effect when assembled with a recessed luminaire.

The invention proposes a lens arranged on a plane having openings. The first side of the light originating from the plane is ejected toward the second side of the plane by the aperture, wherein the first side and the second side are opposite each other. The lens includes an annular portion disposed on a second side of the plane and surrounding the aperture. The annular portion has an inner wall, the inner wall being at least located within the opening, and the inner diameter defined by the inner wall is gradually increased from one side of the annular portion adjacent to one of the planes to the other side away from the plane.

In an embodiment of the invention, the angle between the inner wall and the plane is from 40 degrees to 65 degrees.

In an embodiment of the present invention, the annular portion further has an outer wall, the outer wall and the inner wall are opposite to each other, and the outer diameter defined by the outer wall is gradually increased from one side of the adjacent portion of the annular portion to the other side of the plane or Maintain a certain. Specifically, the angle between the outer wall and the plane is from 45 degrees to 90 degrees. In addition, the contour of the outer wall may be a wave shape composed of a plurality of curved shapes.

In an embodiment of the invention, the lens further includes an assembly portion disposed on a side of the annular portion that is close to the plane. For example, the assembly contacts the edge of the aperture to secure the lens to the plane. Further, the assembly portion is, for example, projecting from the annular portion toward the first side.

In an embodiment of the invention, the lens further includes a central portion coupled to the inner wall of the annular portion to shield the opening. In addition, the central portion may alternatively be a convex shape.

Based on the above, the lens of the present invention includes an annular portion having an inclined inner wall. The lens can be placed on a flat surface with an embedded lighting device. And the embedded illuminator and the lens can be respectively located on opposite sides of the plane. The slanted inner wall allows the light source emitted by the embedded illuminator to be totally reflected locally within the lens to illuminate the plane. As a result, a circular halo effect will be produced on the plane to enhance the visual aesthetics.

The above described features and advantages of the present invention will be more apparent from the following description.

FIG. 1 is a schematic view of a lens and an installation environment thereof according to an embodiment of the invention. Referring to FIG. 1, the lens 100 is disposed on a plane 10. The plane 10 has an opening 12, and a light source 20 emerges from a first side I of the plane 10 toward the second side II of the plane by the opening 12, wherein the first side I and the second side II oppose each other. The lens 100 includes an annular portion 110. The annular portion 110 is disposed on the second side II of the plane 12 and surrounds the opening 12. The annular portion 110 has an inner wall 112.

It is worth mentioning that an inner diameter Di defined by the inner wall 112 is gradually increased from the one side 102 of the annular portion 110 adjacent to the plane 10 toward the other side 104 away from the plane 10. In other words, the inner wall 112 is a sloping side wall. Further, the inner wall 112 is located at least within the opening 12, and the minimum value of the inner diameter Di is, for example, smaller than the aperture of the opening 12.

When the light source 20 is emitted from the first side I toward the second side II through the opening 12, at least a portion of the light source 20 enters the annular portion 110 of the lens 100. In the present embodiment, the material of the lens 100 is, for example, a transparent or translucent material such as a polymer transparent material (PMMA, PC, PET...), glass, etc. The refractive index is different from air. If the inclination angle of the inner wall 112 is appropriately designed, part of the light source 20 will be totally totally reflected in the inner wall 112 and irradiated toward the plane 10. At this time, a ring-shaped halo effect will be produced on the plane 10. It should be noted that, in this embodiment, a pigment layer (not shown) or a colored annular portion 110 may be selectively coated on the inner wall 112. As such, the halo produced on the plane 10 will have a different color than the source 20.

In particular, in the present embodiment, the annular portion 110 is away from one side 104 of the plane 10, for example parallel to the plane 10. Therefore, after the inner wall 112 is totally totally reflected by the inner wall 112, the light source 20 may be irradiated to the side 104 of the annular portion 110 away from the plane 10, and then irradiated toward the plane 10 through the second total reflection. That is, the light may undergo two total internal reflections in the annular portion 100 to illuminate the plane 10.

Specifically, FIG. 2 is a cross-sectional view of the annular portion of the lens of FIG. 1. Referring to FIG. 1 and FIG. 2 simultaneously, in the present embodiment, an angle A1 between the inner wall 112 and the plane 10 is, for example, from 40 degrees to 65 degrees. In addition, the annular portion 110 of the lens 100 has, for example, an outer wall 114, and the outer wall 114 and the inner wall 112 are opposed to each other. It is worth mentioning that an outer diameter Do defined by the outer wall 114 can be gradually increased or maintained by the annular portion 110 from one side 102 of the plane 10 to the other side 104 away from the plane 10. In other words, an angle A2 between the outer wall 114 and the plane 10 can be from 45 degrees to 90 degrees. In this way, after the inner wall 112 and the one side 104 of the annular portion 110 are totally totally internally reflected, the light source 20 can be refracted on the outer wall 114 to be emitted toward the plane 10, thereby forming a ring shape on the plane 10. Halo. Of course, this embodiment can also selectively coat the inner wall 112 with colored pigments. Helps produce a halo of color.

For example, the design of the present invention can be applied to an embedded lighting device. In one embodiment, the plane 10 can be a ceiling-like structure such as a ceiling, a wall, a table top, a floor, or the like that can be fitted with an embedded lighting device. The opening 12 is for mounting an embedded lighting device, and the light source 20 is, for example, the light provided by the embedded lighting device. In the present embodiment, the lens 100 and the embedded illumination device are respectively disposed on opposite sides I and II of the plane 10 to enhance the light-emitting effect of the embedded illumination device by the optical effect provided by the lens 100. In particular, the arrangement of the lens 100 allows the embedded lighting device to have the effect of a ring glow to increase the visual aesthetic.

In this embodiment, the embedded illuminating device may be various known embedded illuminators, and various illuminating light sources such as a bulb, a lamp tube, a light emitting diode, and the like may be used, and the present invention is not particularly limited. Therefore, the structure of the embedded lighting device is not specifically illustrated in FIG. In addition, in other embodiments, the lens 100 may not be designed in conjunction with the embedded illuminating device, that is, the illuminating light source does not need to be assembled with a specific lamp cover or a lamp into an embedded illuminating device to be installed in the opening 12 . For example, any particular illumination source can be mounted directly to the first side I of the plane 10 as a source 20 for indirect illumination, under specific design requirements. At this time, the light source 20 emitted by the illuminating light source can also cause a visual effect of the annular halo near the opening 12.

It is worth mentioning that the inner wall 112 is concentrated toward the center of the opening 12, and the halo is more pronounced. However, the more pronounced the halo means that the more light is illuminated towards the plane 10 and cannot be used for illumination, which may affect the intensity of the overall illumination. Therefore, in the actual design, it can be adjusted with different design requirements. The diameter Di is sized to achieve the desired illumination intensity and the desired halo effect. In addition, the inclination angle of the material of the lens 100 and the outer wall 114 may affect the angle of refraction of the light to cause different halo distribution areas. Therefore, the inclination angle of the material of the lens 100 and the outer wall 114 may also be adjusted according to different design requirements. The ideal visual effect.

In addition, for the convenience of assembly, FIG. 3 is a schematic view of a lens according to another embodiment of the present invention, and FIG. 4 is a schematic cross-sectional view of the lens of FIG. Referring to FIG. 3 and FIG. 4 simultaneously, in addition to the annular portion 210, the lens 200 can optionally include an assembly portion 220 and a central portion 230. In the present embodiment, an embodiment in which the lens 200 has both the annular portion 210, the assembly portion 220, and the center portion 230 will be described. In other embodiments, in addition to the annular portion 210, the lens 200 can selectively have only one of the assembly portion 220 and the central portion 230.

Specifically, the structural design of the annular portion 210 is similar to the structural design of the annular portion 110 of FIG. That is, the annular portion 210 has an opposite inner wall 212 and an outer wall 214. When the lens 200 is assembled on the plane 10 as shown in FIG. 1, an inner diameter Di defined by the inner wall 212 is gradually increased from the side of the annular portion 210 adjacent to one side of the opening 12 away from the other side of the hole 12. Similarly, an outer diameter Do defined by the outer wall 214 is gradually increased or maintained constant by the annular portion 210 adjacent one side of the opening 12 away from the other side of the aperture 12. Of course, an angle A1 between the inner wall 212 and the plane 10 is, for example, from 40 degrees to 65 degrees, and an angle A2 between the outer wall 214 and the plane 10 may be from 45 degrees to 90 degrees.

In the present embodiment, the lens 200 is assembled in a flat shape as shown in FIG. At 10 o'clock on the surface, the assembly portion 220 can be disposed on one side of the annular portion 210 close to the plane 10. Specifically, the assembly portion 220 protrudes from the annular portion 210 toward the first side I, for example. A contact wall 222 of the assembly portion 220 can contact the edge of the opening 12 in the plane 10 to secure the lens 200 to the plane 10. In other words, the assembly portion 220 can be embedded in the opening 12 . However, in other embodiments, the assembly portion 220 can also be configured to be assembled on the light exit opening of an embedded lighting device. Therefore, the above description is for illustrative purposes only and is not intended to limit the manner in which the assembly portion 220 is mounted or the manner of implementation. In an embodiment, the assembly portion 220 may also be provided with a snap structure to facilitate assembly between the lens 200 and other components.

Further, in the present embodiment, the center portion 230 is coupled to the inner wall of the annular portion 210 to shield the opening 12. When the lens 200 is assembled on a plane 10 as depicted in FIG. 1, the central portion 230 is arranged to provide light diffusion to cause the light source 20 to be uniformly emitted from different directions. In the present embodiment, the center portion 230 may have a flat structure, but the present invention is not limited thereto. In other embodiments, the central portion 230 can have a different structural design.

For example, FIG. 5 is a cross-sectional view of a lens according to still another embodiment of the present invention. Referring to Figure 5, the lens 300 is substantially identical to the lens 200 of the previous embodiment, wherein like elements will be designated by like reference numerals. However, the central portion 330 of the lens 300 is a convex central portion 330. That is to say, the central portion 330 is a convex lens-like structure to provide concentrated light to achieve different light-emitting effects. Of course, in other embodiments, the central portion 330 may be a concave lens structure, a convex concave lenticular structure, a biconcave lens structure, a lenticular lens structure, a matte lens, etc. The same light effect. In general, regardless of the design of the central portion 330 and the design of the assembly portion 220, the design of the annular portion 210 can provide total reflection within the light to create a circular halo visual effect around the annular portion 210 and increase the overall illumination design. The beauty of it.

6 and 7 are schematic views of an annular portion of a lens according to another embodiment of the present invention. Referring first to FIG. 6, the annular portion 410 has an opposite inner wall 412 and an outer wall 414, wherein a contour surrounded by the outer wall 414 may be a wave shape composed of a plurality of curved shapes. That is, a contour surrounded by the outer wall 414 is composed of a plurality of curved shapes. In addition, referring to FIG. 7, the annular portion 510 has an opposite inner wall 512 and an outer wall 514, wherein a contour surrounded by the outer wall 514 is hexagonal. In other words, the present invention does not limit the contour of the outer wall in the annular portion. In other embodiments, the contour of the outer wall may be a circle, a star, another polygon or an irregular shape.

It is worth mentioning that the contour of the inner wall of the annular portion is not particularly limited. When the lens of the present invention is disposed on a plane having an opening, the contour of the inner wall of the annular portion only needs to be substantially surrounded. Opening the hole helps to form a ring-shaped halo on the plane. Therefore, the contour of the inner wall is not limited to be circular, and may be a wave shape as shown in Fig. 6, or other forms such as a polygon, an ellipse or the like.

In summary, the lens of the present invention has an annular portion, and when the lens is disposed on a plane, an inner wall of the annular portion intersects the plane at an angle. During the process of illuminating the side of the annular portion from one side of the plane through the opening on the plane, the light will locally enter the annular portion and cause total internal reflection on the inner wall. The total internal reflection light will illuminate the plane to form a ring halo. Such as As a result, the installation of the lens helps to enhance the aesthetics of the visual effect.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧ plane

12‧‧‧ Opening

20‧‧‧Light source

100, 200, 300‧ ‧ lenses

102, 104‧‧‧ side

110, 210, 410, 510‧‧ ‧ ring

112, 212, 412, 512‧‧‧ inner wall

114, 214, 414, 514 ‧ ‧ outer wall

220‧‧‧Assembly Department

222‧‧‧Contact surface

230, 330‧‧‧ Central Department

A1, A2‧‧‧ angle

Di‧‧‧Down

Do‧‧‧OD

I‧‧‧ first side

II‧‧‧ second side

FIG. 1 is a schematic view of a lens and an installation environment thereof according to an embodiment of the invention.

2 is a cross-sectional view of the ring portion of the lens of FIG. 1.

3 is a schematic view of a lens according to another embodiment of the present invention.

4 is a cross-sectional view of the lens of FIG. 3.

FIG. 5 is a cross-sectional view showing a lens according to still another embodiment of the present invention.

6 and 7 are schematic views of an annular portion of a lens according to another embodiment of the present invention.

10‧‧‧ plane

12‧‧‧ Opening

20‧‧‧Light source

100‧‧‧ lenses

102, 104‧‧‧ side

110‧‧‧ ring

112‧‧‧ inner wall

114‧‧‧ outer wall

Di‧‧‧Down

Do‧‧‧OD

I‧‧‧ first side

II‧‧‧ second side

Claims (10)

A lens disposed on a plane having an opening, and a light source is emitted from a first side of the plane toward the second side of the plane by the opening, wherein the first side and the first side The two sides are opposite to each other, the lens includes: an annular portion disposed on the second side of the plane and surrounding the opening, the annular portion having an inner wall, the inner wall being at least located in the opening, and the inner wall An inner diameter is defined by the annular portion gradually increasing laterally from one side of the plane away from the other side of the plane, wherein a portion of the light emitted by the light source occurs twice on the inner wall of the annular portion and the other side Total reflection. The lens of claim 1, wherein the inner wall forms an angle with the plane from 40 degrees to 65 degrees. The lens of claim 1, wherein the annular portion further has an outer wall opposite to the inner wall, and an outer diameter defined by the outer wall is laterally separated from the annular portion by one of the planes The other side of the plane gradually increases or maintains a certain value. The lens of claim 3, wherein the angle between the outer wall and the plane is from 45 degrees to 90 degrees. The lens of claim 3, wherein the outer wall is a wave shape composed of a plurality of curved shapes. The lens of claim 3, wherein the outer or inner wall is coated with a dye. The lens of claim 1, further comprising an assembly portion disposed on a side of the annular portion that is close to the plane. The lens of claim 1, further comprising a central portion coupled to the inner wall of the annular portion to shield the opening. The lens of claim 8, wherein the central portion is a convex shape. The lens of claim 8, wherein the central portion is a matte surface.