Linear laser projectors and electronic equipment

Abstract

This utility model discloses a linear laser projector and electronic device. The linear laser projector includes: a substrate; a laser emitter disposed on one side of the substrate; a collimating and shaping lens, which includes a collimating surface and a linear shaping surface opposite to the collimating surface. The collimating surface faces the laser emitter. The laser emitted by the laser emitter is incident on the collimating surface of the collimating and shaping lens and then exits from the linear shaping surface. The laser emitted by the laser emitter is collimated and linearly shaped by the collimating and shaping lens to obtain a linear beam. The collimating and shaping lens is integrally formed; an adhesive layer is disposed on the periphery of the side of the collimating and shaping lens connected to the substrate. The linear laser projector and electronic device of this utility model adopts an integral molding design for the collimating and shaping lens, requiring only one set of molds for injection molding. Compared with the existing linear projector solutions that use separate collimating and wavy mirror designs, this reduces the number of molds required and decreases the assembly cost.

Description

Technical Field

[0001] This utility model specifically relates to a linear laser projector and electronic device. Background Technology

[0002] Linear laser projectors, as devices capable of projecting lasers, have been widely used in daily life, medical equipment, and industrial production, such as as lidar in robotic vacuum cleaners. As competition intensifies in the robotic vacuum cleaner market, end-users are becoming increasingly price-sensitive to laser projectors, demanding higher costs while maintaining performance. Whoever can manufacture products with equivalent performance at a lower BOM and manufacturing costs will have a competitive advantage.

[0003] Existing linear laser projector solutions employ a separate design for the collimating lens and the wave mirror, which are then assembled together using adhesive bonding or ultrasonic welding. This combination results in high material and assembly costs. Furthermore, the collimating lens and the wave mirror exhibit offset and tilt tolerances during the adhesive bonding or ultrasonic welding process, which affects the final optical performance of the laser projector. Utility Model Content

[0004] This utility model provides a linear laser projector and electronic device to solve the aforementioned technical problems, specifically adopting the following technical solution: A line laser projector, comprising: substrate; A laser emitter is mounted on one side of the substrate; A collimating and shaping lens is connected to the side of the substrate where the laser emitter is located. The collimating and shaping lens includes a collimating surface and a linear shaping surface opposite to the collimating surface. The collimating surface faces the laser emitter. The laser emitted by the laser emitter is incident on the collimating surface of the collimating and shaping lens and then exits from the linear shaping surface. The laser emitted by the laser emitter is collimated and linearly shaped by the collimating and shaping lens to obtain a linear beam. The collimating and shaping lens is integrally formed. An adhesive layer is disposed on the periphery of the side of the collimating and shaping lens that is connected to the substrate.

[0005] Furthermore, the collimating and shaping lens includes a main body and a connecting part, the connecting part being connected to the substrate.

[0006] Furthermore, the substrate is a ceramic substrate.

[0007] Furthermore, the substrate is an FR4 substrate.

[0008] Furthermore, the laser emitter is a VCSEL.

[0009] Furthermore, the collimating and shaping lens is a resin lens.

[0010] Furthermore, the collimating and shaping lens is an acrylic lens.

[0011] Furthermore, the collimating and shaping lens is a polycarbonate lens.

[0012] An electronic device comprising the aforementioned line laser projector.

[0013] The advantage of this utility model is that the provided linear laser projector and electronic device adopt an integrated molding design for the collimating and shaping lens, which only requires one set of mold injection molding. Compared with the existing linear projector solution that adopts a separate design of collimating lens and wave lens, it requires one less set of mold and reduces assembly cost. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a linear laser projector according to this utility model; Figure 2 This is a cross-sectional view of a linear laser projector according to this utility model.

[0016] Linear laser projector 100, substrate 10, laser emitter 20, collimating and shaping lens 30, collimating surface 31, linear shaping surface 32, main body 33, connecting part 34, adhesive layer 40. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0018] It is understood that the term "a" should be understood as "at least one" or "one or more," meaning that in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple. The term "a" should not be construed as a limitation on the quantity. Although ordinal numbers such as "first," "second," etc., will be used to describe various components, they are not limiting to those components herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular form also includes the plural form, unless the context clearly indicates otherwise. It will also be understood that the terms "comprising" and / or "having," when used in this specification, specify the presence of the described features, numbers, steps, operations, components, elements, or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0019] like Figure 1 and 2 The image shows a linear laser projector 100 according to this application, comprising: a substrate 10, a laser emitter 20, a collimating and shaping lens 30, and an adhesive layer 40.

[0020] The substrate 10 can be a ceramic substrate 10 or an FR4 substrate 10. FR4 is an epoxy fiberglass laminate, a flame-retardant composite material, made of epoxy resin as the matrix and alkali-free E-fiberglass cloth as the reinforcing skeleton, laminated and cured under high temperature and pressure. It also has good mechanical strength, dimensional stability, electrical insulation and moisture resistance.

[0021] In the embodiments of this application, the substrate 10 is an alumina ceramic substrate 10, which can quickly dissipate the heat of the laser. It is understood that the substrate 10 can also be made of other types of materials, and this application does not impose any limitations.

[0022] The laser emitter 20 is disposed on one side of the substrate 10. In this application, the laser emitter 20 is a VCSEL (vertical cavity surface emission laser).

[0023] A collimating and shaping lens 30 is attached to the side of the substrate 10 where the laser emitter 20 is located. The collimating and shaping lens 30 includes a collimating surface 31 and a linear shaping surface 32 opposite to the collimating surface 31. The collimating surface 31 faces the laser emitter 20. The laser emitted by the laser emitter 20 is incident on the collimating surface 31 of the collimating and shaping lens 30 and then exits from the linear shaping surface 32. After being collimated and linearly shaped by the collimating and shaping lens 30, the laser emitted by the laser emitter 20 becomes a linear beam.

[0024] In the embodiments of this application, the collimating and shaping lens 30 is integrally formed. The integrally formed collimating and shaping lens 30 only requires one set of molds for injection molding, which saves one set of molds compared to the separate design of collimating lens and wave lens, and reduces assembly costs.

[0025] It is understandable that the collimating and shaping lens 30 can be a resin lens or an acrylic lens. For example, PMMA (polymethyl methacrylate) acrylic glass, EP5000 type polycarbonate resin plastic, etc. The collimating and shaping lens 30 can also be a PC (polycarbonate) lens.

[0026] In a preferred embodiment, the collimating and shaping lens 30 includes a main body 33 and a connecting portion 34, the connecting portion 34 being connected to the substrate 10. The connecting portion 34 surrounds the main body 33 and forms a sealed optical cavity after being bonded to the substrate 10. A collimating surface 31 and a linear shaping surface 32 are formed on the main body 33. The connecting portion 34 is disposed between the substrate 10 and the main body 33, creating a certain gap between the main body 33 and the substrate 10, which facilitates setting the distance between the laser emitter 20 and the main body 33.

[0027] The adhesive layer 40 is disposed on the periphery of the side of the collimating and shaping lens 30 that is connected to the substrate 10. The adhesive layer 40 may be formed by curing a UV-curable adhesive.

[0028] This application also discloses electronic devices that use the aforementioned linear laser projector 100, such as robotic vacuum cleaners.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A linear laser projector, characterized by, Include: substrate; A laser emitter is mounted on one side of the substrate; A collimating and shaping lens is connected to the side of the substrate where the laser emitter is located. The collimating and shaping lens includes a collimating surface and a linear shaping surface opposite to the collimating surface. The collimating surface faces the laser emitter. The laser emitted by the laser emitter is incident on the collimating surface of the collimating and shaping lens and then exits from the linear shaping surface. The laser emitted by the laser emitter is collimated and linearly shaped by the collimating and shaping lens to obtain a linear beam. The collimating and shaping lens is integrally formed. An adhesive layer is disposed on the periphery of the side of the collimating and shaping lens that is connected to the substrate.

2. The linear laser projector according to claim 1, characterized in that, The collimating and shaping lens includes a main body and a connecting part, and the connecting part is connected to the substrate.

3. The linear laser projector according to claim 1, characterized in that, The substrate is a ceramic substrate.

4. The linear laser projector according to claim 1, characterized in that, The substrate is an FR4 substrate.

5. The linear laser projector according to claim 1, characterized in that, The laser emitter is a VCSEL.

6. The linear laser projector according to claim 1, characterized in that, The collimating and shaping lens is a resin lens.

7. The linear laser projector according to claim 1, characterized in that, The collimating and shaping lens is an acrylic lens.

8. The linear laser projector according to claim 1, characterized in that, The collimating and shaping lens is a polycarbonate lens.

9. An electronic device, comprising: Includes a line laser projector as described in any one of claims 1-8.

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