Soft light type optical lens

Abstract

The utility model particularly relates to a soft light type optical lens which is assembled in a lamp holder and provided with a light inlet hole, a reflecting part and a light outlet part. The reflecting part comprises a reflecting incident light inclined surface and a reflecting curved surface; the light emitting part comprises a reflecting light emitting surface and a refracting light emitting surface; the reflection incident light inclined surface is the side surface of the incident light hole, the top surface of the incident light hole is a refraction incident light surface, and the reflection curved surface is the outer side end surface of the lens; the reflecting light-emitting surface and the refracting light-emitting surface are the top surface of the lens; according to the utility model, through the components of a plurality of free-form surfaces and inclined surfaces, the internal light path structure of the lens is optimized, the cleaning boundary of reflection and refraction is carried out on light rays, and light path optimization is carried out, so that the refraction part and the reflection part can be lighted more uniformly, and stray light rays and light rings are avoided; refracted and reflected light rays are superposed, and a complete light pattern is collected.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting lamps, in particular to a soft light type optical lens. Background Art

[0002] At present, most of the commercial lighting lamps on the market use optical lenses. When using optical lenses with total internal reflection structure, due to the influence of the lamp structure, the light spot will have uneven transition, aperture, and more stray light when lit, which affects the comfort of the lamp. Utility Model Content

[0003] The purpose of the utility model is to provide a soft light optical lens to solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0005] An optical lens of soft light type is installed in a lamp holder, and the lens is provided with a light entrance hole, a reflection part and a light exit part;

[0006] The reflective portion includes a reflective light-incoming inclined surface and a reflective curved surface; the light-emitting portion includes a reflective light-emitting surface and a refracting light-emitting surface; the reflective light-incoming inclined surface is the side surface of the light-incoming hole, the top surface of the light-incoming hole is the refracting light-incoming surface, and the reflective curved surface is the outer end surface of the lens; the reflective light-emitting surface and the refracting light-emitting surface are the top surfaces of the lens;

[0007] Furthermore, the lower edges of the light-reflecting inclined surface and the reflecting curved surface are connected by a dividing inclined surface;

[0008] Furthermore, the reflective curved surface is a total reflective curved surface;

[0009] Furthermore, the light-refraction incident surface and the light-refraction output surface are free-form surfaces with two arc-shaped openings facing each other.

[0010] Furthermore, the reflecting light output surface is an inwardly concave free-form surface, and the refracting light output surface is an outwardly convex free-form surface;

[0011] Furthermore, the outer surfaces of the reflected light surface and the refracted light surface are both Fermat spiral bead surfaces, and the two surfaces have a flexible transition and no edges or corners;

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model optimizes the internal optical path structure of the lens through components of multiple free-form surfaces and inclined surfaces, cleans the boundary between reflection and refraction of light, and optimizes the optical path, so that the refraction part and the reflection part can be illuminated more evenly, avoiding stray light and aperture; superimposes the refracted and reflected light to gather a complete light pattern. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 2 It is an oblique upward view schematic diagram of the overall structure of the utility model.

[0016] Figure 3 It is a schematic diagram of the optical path of the utility model. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] refer to Figure 1-3 As shown, a soft light optical lens is assembled in a lamp holder, characterized in that the lens is provided with a light entrance hole 1, a reflection part 2 and a light exit part 3;

[0019] The reflecting portion 2 includes a reflecting light incident inclined surface 21 and a reflecting curved surface 22; the light emitting portion 3 includes a reflecting light emitting surface 31 and a refracting light emitting surface 32; the reflecting light incident inclined surface 21 is the side surface of the light incident hole 1, the top surface of the light incident hole 1 is the refracting light incident surface 4, and the reflecting curved surface 22 is the outer end surface of the lens; the reflecting light emitting surface 31 and the refracting light emitting surface 32 are the top surfaces of the lens;

[0020] Furthermore, the lower edges of the light-reflecting inclined surface 21 and the reflecting curved surface 22 are connected by a dividing inclined surface 5;

[0021] In this embodiment, the dividing bevel 5 can filter stray light, make a better boundary between reflection and refraction, ensure that the light of the reflected part does not interfere with each other, and avoid the formation of unnecessary aperture and stray light.

[0022] Furthermore, the reflective curved surface 22 is a total reflective curved surface;

[0023] Furthermore, the light-refraction incident surface 4 and the light-refraction outgoing surface 32 are free-curved surfaces with two arc-shaped openings facing each other.

[0024] Furthermore, the reflective light output surface 31 is an inwardly concave free-form surface, and the refracted light output surface 32 is an outwardly convex free-form surface;

[0025] Furthermore, the outer surfaces of the reflective light output surface 31 and the refracted light output surface 32 are both Fermat spiral bead surfaces, and the two surfaces have a flexible transition without edges and corners;

[0026] In this embodiment, the refraction incident light surface 4 and the refraction output light surface 32 in the refraction path are both free-form surfaces, which can better absorb and control light, and the surface structure of the refraction output light surface 32 is a Fermat spiral bead surface, which can be softened multiple times through tiny bead surfaces to control light more evenly.

[0027] In the reflection part, the light enters the reflection light incident inclined plane 21, is refracted, and then is reflected by the reflection curved surface 22, and finally is emitted through the reflection light emitting surface 31. The whole is refracted multiple times, which can disperse the light spot evenly, and the surface structure of the reflection light emitting surface 31 is a Fermat spiral bead surface, which can be softened multiple times by tiny bead surfaces, so that the light can be controlled more evenly.

[0028] The light path of this embodiment is as follows. The light is divided into a reflection part and a light emitting part. When the LED light source is turned on, the light directly passes through the light entrance hole 1 and is divided into a reflection part and a light emitting part. The light of the reflection part enters the interior of the lens from the reflection light entrance inclined surface 21 and reaches the fully reflecting reflection curved surface 22. After being reflected on the surface, the light is refracted by the reflection light emitting surface 31 at the top to be emitted. The light of the light emitting part is refracted upward by the refraction light entrance surface 4 at the top of the light entrance hole 1 and is refracted and emitted through the refraction light emitting surface 32. Finally, the two parts of light are superimposed into a complete light pattern after being emitted.

[0029] The utility model optimizes the internal optical path structure of the lens through components of multiple free-form surfaces and inclined surfaces, cleans the boundary between reflection and refraction of light, and optimizes the optical path, so that the refraction part and the reflection part can be illuminated more evenly, avoiding stray light and aperture; superimposes the refracted and reflected light to gather a complete light pattern.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. An optical lens of soft light type, assembled in a lamp stand, characterized in that: The lens is provided with a light entrance hole (1), a reflection portion (2) and a light exit portion (3); The reflecting portion (2) comprises a reflecting light incident inclined surface (21) and a reflecting curved surface (22); the light emitting portion (3) comprises a reflecting light emitting surface (31) and a refracting light emitting surface (32); the reflecting light incident inclined surface (21) is a side surface of the light incident hole (1), the top surface of the light incident hole (1) is a refracting light incident surface (4), and the reflecting curved surface (22) is an outer end surface of a lens; the reflecting light emitting surface (31) and the refracting light emitting surface (32) are top surfaces of the lens.

2. The soft light type optical lens according to claim 1, characterized in that: The lower edges of the light-reflecting inclined surface (21) and the reflecting curved surface (22) are connected via a dividing inclined surface (5).

3. The soft light type optical lens according to claim 1, characterized in that: The reflective curved surface (22) is a total reflective curved surface.

4. The soft light type optical lens according to claim 2, characterized in that: The light-refraction incident surface (4) and the light-refraction output surface (32) are free-form surfaces with two arc-shaped openings facing each other.

5. The soft light type optical lens according to claim 3, characterized in that: The reflective light output surface (31) is an inwardly concave free-form surface, and the refracted light output surface (32) is an outwardly convex free-form surface.

6. The soft light type optical lens according to claim 3, characterized in that: The outer surfaces of the reflective light output surface (31) and the refracted light output surface (32) are both Fermat spiral bead surfaces, and the two surfaces have a flexible transition and no edges or corners.

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