CN211928308U - Optical element, light source module and projection equipment - Google Patents

Abstract

The application discloses optical element, including optical wand (100), lens (200) and supporting part (300), supporting part (300) are the tube-shape structure spare, the tube-shape structure spare includes first open end and second open end, lens (200), optical wand (100) and supporting part (300) formula structure as an organic whole, lens (200) shutoff is at first open end, and lens (200) and supporting part (300) form accommodation space (400), optical wand (100) are located accommodation space (400), the first end of optical wand (100) links to each other with lens (200), the second end of optical wand (100) extends towards the direction of second open end. Above-mentioned scheme can solve present optical wand and be infected with the dust easily at the in-process of assembly, and then lead to the relatively poor problem of even light performance. The application also discloses a light source module and projection equipment.

Description

Optical element, light source module and projection equipment

Technical Field

The application relates to the technical field of projection equipment, in particular to an optical element, a light source module and projection equipment.

Background

With the popularization of smart devices, AR (Augmented Reality) devices have entered the consumer domain. The optical display system of an AR device is usually composed of a miniature display screen and optical elements. The waveguide device has the best development potential as one of optical elements in terms of optical effect, appearance form and mass production prospect.

The light on the miniature display screen needs to be projected to the waveguide device in a micro-projection mode in the working process of the AR equipment, and light needs to be distributed in the projection process so as to achieve more uniform light distribution. Currently, the optical elements of an AR device typically also include a lens array and a light wand. The light bar is adopted for light homogenizing treatment, and the light homogenizing device has the advantages of high light energy utilization rate, good uniformity, simple structure and the like.

However, the light bar is easy to contact with environmental components during installation, and is easy to be stained with dust, and is finally easy to be affected by dust, so that the light-homogenizing performance is poor.

Of course, the above problems may also exist in other electronic products including the projection apparatus, not limited to the AR device.

SUMMERY OF THE UTILITY MODEL

The application discloses an optical element to solve present optical wand and be infected with the dust easily at the in-process of assembly, and then lead to the relatively poor problem of even light performance.

In order to solve the above problems, the following technical solutions are adopted in the present application:

the utility model provides an optical element, includes optical wand, lens and supporting part, the supporting part is the tube-shape structure spare, the tube-shape structure spare includes first open end and second open end, the lens the optical wand with supporting part formula structure as an organic whole, the fixed shutoff of lens is in first open end, just the lens with the supporting part forms accommodation space, the optical wand is located in the accommodation space, the first end of optical wand with the lens is fixed continuous, the second end orientation of optical wand the direction of second open end extends.

A light source module comprises a light source main body and the optical element, wherein the light source main body comprises a light emitting part, the light emitting part is arranged opposite to the second end of the light stick, and the center of the light emitting part is located on the central axis of the light stick.

A projection device comprises the light source module.

The optical element that this application embodiment discloses improves through the structure to the optical element in the correlation technique, with the optical wand, lens and supporting part design formula as an organic whole fashioned structure, avoid the optical wand to be assembled alone at the in-process of optical element assembly, and then can alleviate the phenomenon that the optical wand touched with other component emergence easily at the in-process of assembly, and then can avoid the optical wand to glue the dust betterly, it is visible, the optical element that this application embodiment discloses can solve the optical wand and be infected with the dust easily at the in-process of assembly, and then lead to the relatively poor problem of even light performance.

Drawings

FIG. 1 is a schematic diagram of the structure of an optical element disclosed herein;

fig. 2 is a schematic structural diagram of a first light source module disclosed in the present application;

fig. 3 is a schematic structural diagram of a second light source module disclosed in the present application;

fig. 4 is a schematic partial structure diagram of a third light source module disclosed in the present application;

FIG. 5 is a schematic view of a light source body according to the present disclosure;

fig. 6 is an assembly view of a third light source module disclosed in the present application.

Description of reference numerals:

100-light bar, 200-lens, 300-supporting part, 310-positioning recess, 400-containing space,

500-light source body, 510-light emitting part, 520-base, 521-substrate, 522-supporting and positioning projection, 5221-positioning projection,

600-gap.

Detailed Description

The technical solutions in the present application will be described clearly and completely with reference to the drawings in the present application, and it is obvious that the described applications are part of the present application, but not all of the present application. All other applications that can be made by one of ordinary skill in the art without any inventive effort based on the applications in the present application are within the scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the applications of the present application are capable of operation in sequences other than those illustrated or otherwise described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The optical element provided by the application is described in detail through specific applications and application scenarios thereof in combination with the accompanying drawings.

Referring to fig. 1 to 6, an embodiment of the present application discloses an optical element, which can be applied to a projection apparatus of an electronic product. Specifically, the optical element can be applied to a light source module of projection equipment.

The optical element disclosed in the embodiment of the present application includes an optical wand 100, a lens 200, and a support portion 300, in the embodiment of the present application, the support portion 300 plays a role of supporting the lens 200, the support portion 300 is a cylindrical structural member, the support portion 300 is a through structure, and the support portion 300 includes a first opening end and a second opening end.

The light bar 100 can perform light-homogenizing treatment on the light emitted by the light-emitting part 510 of the light source module, so that the uniformity of the light finally projected through the lens 200 is better. The dodging principle of the light stick 100 is well known in the art and will not be described in detail herein.

In the embodiment of the present application, the lens 200, the optical wand 100 and the supporting portion 300 are of an integrated structure, specifically, the lens 200, the optical wand 100 and the supporting portion 300 can be of an integrated injection molding structure, and the injection molding process is adopted to manufacture the lens, the optical wand and the supporting portion, so that the lens has the advantages of high production efficiency, high processing precision, good structural consistency, simple production process, low production cost and the like. Of course, the lens 200, the light bar 100 and the support portion 300 may be a one-piece machined structure, for example, formed by a cutting process from respective blanks.

The lens 200 is sealed at the first opening end of the support 300, the lens 200 is connected with the first opening end of the support 300, the lens 200 and the support 300 form an accommodating space 400, the light bar 100 is located in the accommodating space 400, the first end of the light bar 100 is connected with the lens 200, and the second end of the light bar 100 extends towards the second opening end of the support 300. In this case, the light stick 100 can be accommodated in the accommodating space 400 formed by the lens 200 and the supporting portion 300, and the exposure of the light stick 100 can be reduced or avoided.

The optical element disclosed in the embodiment of the application is improved through the structure of the optical element in the related art, the optical rod 100, the lens 200 and the supporting part 300 are designed into an integrally formed structural part, the optical rod 100 is prevented from being assembled independently in the assembling process of the optical element, and then the phenomenon that the optical rod 100 is easy to touch other components in the assembling process can be relieved, and further the optical rod 100 can be better prevented from being stuck with dust, therefore, the optical element disclosed in the embodiment of the application can solve the problem that the optical rod 100 is easy to be stained with dust in the assembling process, and further the light uniformizing performance is poor.

In an alternative, the end surface of the light stick 100 away from the first opening end of the support 300 may be recessed in the end surface of the second opening end. By the structure, the optical wand 100 can be better hidden in the accommodating space 400, so that the optical wand 100 can be better prevented from contacting other components in the assembling process, and the condition that the optical wand 100 is stained with dust and damaged can be better relieved.

In the embodiment of the present application, the central axis of the light stick 100 and the central axis of the support 300 may be distributed in a staggered manner. In the process of assembling the light source module, it is necessary to align the light stick 100 with the light emitting part 510, and the light stick 100, the supporting part 300 and the lens 200 are an integral structural member, and in the process of mounting, in order to facilitate the alignment operation, the central axis of the light stick 100 and the central axis of the supporting part 300 may be collinear. In the process of mounting the optical element, the alignment between the light stick 100 and the light emitting portion 510 can be realized by aligning the supporting portion 300 of the optical element with the light emitting portion 510, which can reduce the alignment cost and difficulty and is beneficial to improving the alignment precision.

Based on the optical element disclosed in the embodiment of the present application, the embodiment of the present application discloses a light source module, which includes a light source body 500 and the optical element described in the above embodiment. The light source main body 500 may include a light emitting portion 510, the light emitting portion 510 being disposed opposite to the second end of the light wand 100, the center of the light emitting portion 510 being located on the central axis of the light wand 100.

In a specific operation process, the light emitted from the light emitting portion 510 is incident into the light stick 100 from the second end of the light stick 100, then is transmitted into the lens 200 through the light stick 100, and finally is irradiated into the waveguide through the lens 200 after being homogenized by the light stick 100.

Referring to fig. 3, 5 and 6, in the application embodiment, the light source body 500 may further include a base 520, the base 520 is a base member of the light source body and can provide an installation base for the light emitting portion 510, the optical element may be connected to the base 520 through the supporting portion 300, so as to achieve connection between the light source body 500 and the optical element, and the base 520 is beneficial to simplifying assembly between the optical element and the light emitting portion 510.

In the embodiment of the present application, the base 520 may have various structures, the base 520 may include a substrate 521 and a supporting and positioning protrusion 522 disposed on an edge of the substrate 521, and the supporting and positioning protrusion 522 may be in positioning fit with an end surface of the second opening end of the supporting portion 300, so as to achieve connection between the supporting portion 300 and the base 520, and further achieve assembly between the light bar 100 and the light emitting portion 510, and meanwhile, by designing the structure of the supporting and positioning protrusion 522, after the supporting and positioning protrusion 522 is engaged with the supporting portion 300, alignment fit between the light emitting portion 510 and the light bar 100 can be maintained.

There are multiple ways of positioning and matching the end surfaces of the supporting and positioning protrusions 522 and the second opening end of the supporting portion 300, in an optional scheme, one of the end surfaces of the supporting and positioning protrusions 522 and the second opening end is provided with a positioning convex portion 5221, the other end is provided with a positioning concave portion 310, and the positioning convex portion 5221 is positioned and matched with the positioning concave portion 310, so that the positioning and matching between the supporting and positioning protrusions 522 and the supporting portion 300 can be realized. Of course, other positioning and matching manners may be adopted, for example, the supporting and positioning protrusion 522 may be provided with a first positioning step surface, the end surface of the second opening end of the supporting portion 300 may include a second positioning step surface, and the first positioning step surface may be in positioning and matching with the second positioning step surface.

In order to avoid the light emitting part 510 from being easily damaged or contaminated by the knock, alternatively, the height of the light emitting part 510 may be smaller than the height of the support positioning bosses 522.

After the assembly is completed, the second end of the light wand 100 may contact the light emitting portion 510, but the light emitting portion 510 may be damaged easily, based on which, in the alternative, a gap 600 may be formed between the second end of the light wand 100 and the light emitting portion 510.

In the embodiment of the present application, the Light Emitting portion 510 may be an LED (Light Emitting Diode) Light Emitting body, and the LED Light Emitting body has the advantages of energy saving, environmental protection, low heat generation amount, long service life, and the like.

In the embodiments of the present application, the difference between the embodiments is described in detail, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in view of brevity of the text.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. An optical element is characterized by comprising a light stick (100), a lens (200) and a supporting part (300), wherein the supporting part (300) is a cylindrical structural part which comprises a first opening end and a second opening end, the lens (200), the light stick (100) and the supporting part (300) are of an integrated structure, the lens (200) is sealed at the first opening end, an accommodating space (400) is formed between the lens (200) and the supporting part (300), the light stick (100) is located in the accommodating space (400), the first end of the light stick (100) is connected with the lens (200), and the second end of the light stick (100) extends towards the direction of the second opening end.

2. An optical element according to claim 1, characterized in that the end surface of the light stick (100) facing away from the first open end is recessed with respect to the end surface of the second open end.

3. The optical element of claim 1, wherein the lens (200), the light bar (100) and the support (300) are a one-piece injection molded structural part.

4. An optical element according to claim 1, characterized in that the central axis of the light stick (100) is collinear with the central axis of the support (300).

5. A light source module comprising a light source main body (500) and the optical element of any one of claims 1 to 4, wherein the light source main body (500) comprises a light emitting portion (510), the light emitting portion (510) is disposed opposite to the second end of the light stick (100), and the center of the light emitting portion (510) is located on the central axis of the light stick (100).

6. The light source module according to claim 5, wherein the light source body (500) further comprises a base (520), the light emitting part (510) is disposed on the base (520), and the base (520) is connected to the supporting part (300).

7. The light source module according to claim 6, wherein the base (520) comprises a substrate (521) and a supporting and positioning protrusion (522) disposed at an edge of the substrate (521), and the supporting and positioning protrusion (522) is in positioning fit with an end face of the second open end.

8. The light source module of claim 7, wherein one of the supporting and positioning protrusion (522) and the end surface of the second opening end is provided with a positioning protrusion (5221), and the other one is provided with a positioning recess (310), and the positioning protrusion (5221) is in positioning fit with the positioning recess (310).

9. The light source module of claim 5, wherein a gap (600) is formed between the second end of the light wand (100) and the light emitting portion (510).

10. A projection apparatus, comprising the light source module of any one of claims 5 to 9.

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