Optical mechanisms and their packaging structures with multiple light sources

Abstract

An optomechanical system for a navigation device includes a first light source, a second light source, a lens, a carrier, and an image sensor. The carrier has a light source mount, a lens mount, a receiving space, and an inclined wall. The first light source is disposed on the light source mount of the carrier, and reflected light associated with the first light source passes through the lens and is transmitted to the image sensor within the receiving space. Reflected light associated with the second light source passes through the inclined wall of the carrier and is transmitted to the image sensor.

Description

Technical Field

[0001] This invention relates to a multi-source optomechanical structure, and more particularly to a multi-source optomechanical structure and its carrier suitable for navigation devices, which can avoid the problem of mutual interference between the multiple sources. Background Technology

[0002] Optical navigation devices utilize a light source to illuminate a working surface and use an image sensor to capture reflected light from the working surface to generate image frames. The processor then calculates the navigation device's distance traveled and / or speed relative to the working surface based on these image frames.

[0003] However, different working surfaces typically have different reflectivities, which can cause significant changes in image features within an image frame. Therefore, navigation devices capable of distinguishing between working surfaces of different materials are essential. Summary of the Invention

[0004] The present invention provides an optomechanical structure for a navigation device, which uses multiple light sources to switch relative to different working surfaces to facilitate operation on different working surfaces.

[0005] The present invention also provides a multi-source optomechanical structure, which has a blocking structure to effectively prevent interference between emitted and reflected light from different sources.

[0006] The present invention also provides a multi-source optomechanical structure and its carrier or packaging structure, which has high light utilization efficiency and can obtain information of the same area of ​​the working surface.

[0007] This invention provides an optomechanical structure comprising a substrate, a first light source, a second light source, a lens, an image sensor, and a carrier. The first light source is electrically connected to the substrate and emits light of a first wavelength. The second light source is disposed on the substrate and emits light of a second wavelength. The image sensor is disposed on the substrate. The carrier is disposed on the substrate and includes a light source frame, a lens frame, a receiving space, and an inclined wall. The light source frame fixes the first light source. The lens frame fixes the lens. The receiving space accommodates the second light source and the image sensor. The inclined wall is disposed above the image sensor, wherein reflected light associated with the first light source passes through the lens and is transmitted to the image sensor, and reflected light associated with the second light source passes through the inclined wall and is transmitted to the image sensor.

[0008] The present invention also provides a support member comprising a light source frame, a lens frame, a receiving space, and an inclined wall. The light source frame is used to fix a first light source. The lens frame has a first opening for mounting a lens. The receiving space is used to accommodate a second light source and an image sensor. The inclined wall is disposed above the receiving space, wherein the light source frame is made of an opaque material, and the inclined wall is transparent to the emitted light from the second light source but opaque to the emitted light from the first light source.

[0009] The present invention also provides a support member for an optomechanical structure comprising a light source frame, a lens frame, an inclined wall, and a receiving space. The lens frame is adjacent to the light source frame in a first direction. The inclined wall is adjacent to the lens frame in the first direction. The receiving space is located below the inclined wall, wherein the lens frame is higher than the light source frame and the inclined wall.

[0010] The present invention also provides an optomechanical structure comprising a packaging structure, a first light source, a second light source, a lens, and an image sensor. The packaging structure includes a light source housing structure, an optical carrier structure, a chip housing structure, and a filter sidewall. The light source housing structure has a light source housing space. The optical carrier structure has a lens housing space. The chip housing structure has a chip housing space. The filter sidewall is located above the chip housing space. The first light source is disposed in the light source housing space. The second light source is disposed in the chip housing space. The lens is disposed in the lens housing space. The image sensor is disposed in the chip housing space.

[0011] The present invention also provides an optomechanical packaging structure comprising a light source housing structure, an optical carrier structure, a chip housing structure, and an inclined wall. The light source housing structure has a light source housing space. The optical carrier structure has a lens housing space. The chip housing structure has a chip housing space. The inclined wall is disposed above the chip housing structure.

[0012] The present invention also provides an optomechanical packaging structure comprising a light source housing structure, an optical carrier structure, a chip housing structure, and a filter sidewall. The light source housing structure has a light source housing space. The optical carrier structure has a lens housing space. The chip housing structure has a chip housing space. The filter sidewall is located above the chip housing space.

[0013] To make the above and other objects, features and advantages of the present invention more apparent, a detailed description will be provided below with reference to the accompanying drawings. Furthermore, in the description of the present invention, the same components are denoted by the same reference numerals, which will be stated herein as well. Attached Figure Description

[0014] Figure 1This is a perspective view of the optomechanical structure according to an embodiment of the present invention;

[0015] Figure 2 This is a top view of the optomechanical structure according to an embodiment of the present invention;

[0016] Figure 3 yes Figure 2 A cross-sectional view of the optomechanical structure and shielding cylinder along line A-A'.

[0017] Figure 4 This is a cross-sectional view of the optomechanical structure according to another embodiment of the present invention;

[0018] Figure 5 This is a cross-sectional view of the optomechanical structure of another embodiment of the present invention;

[0019] Figure 6 This is another perspective view of the optomechanical structure according to an embodiment of the present invention;

[0020] Figure 7 This is a perspective view of the optomechanical structure and its shielding cylinder according to the second embodiment of the present invention;

[0021] Figure 8 yes Figure 7 A cross-sectional view of the optomechanical structure and its shielding cylinder along line B-B'; and

[0022] Figure 9 This is a top view of the optomechanical structure of the second embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures

[0024] 700 Optomechanical Structure

[0025] 11 base plate

[0026] 12 First Light Source

[0027] 16 Second Light Source

[0028] 18 Image Sensors

[0029] 73 Load-bearing components

[0030] 731 First Opening

[0031] 732 Light Source Stand

[0032] 733 Second Opening

[0033] 734 Lens Mount

[0034] 735 Capacity

[0035] 736 Inclined Wall

[0036] 74 Lenses

[0037] 80 Shielding Cylinder Detailed Implementation

[0038] This invention provides a multi-source optomechanical structure with a barrier structure to protect its internal components and prevent interference between emitted light from different light sources and reflected light from the working surface, thereby improving judgment accuracy. The optomechanical structure can be configured, for example, in a navigation device operating on a working surface, such as, but not limited to, a cleaning robot.

[0039] Please refer to the following at the same time Figures 1 to 3 As shown, Figure 1 This is a perspective view of an optomechanical structure 100 according to an embodiment of the present invention; Figure 2 This is a top view of an optomechanical structure 100 according to an embodiment of the present invention; Figure 3 yes Figure 2 A cross-sectional view of the optomechanical structure 100 and the shielding cylinder 20 along line A-A'.

[0040] The optomechanical structure 100 includes a first light source 12, a lens 14, a second light source 16, an image sensor 18, a substrate 11, and a barrier structure 13 disposed on the substrate 11. The barrier structure 13 can be attached to the substrate 11 by adhesive or fasteners, without specific limitations. The substrate 11 can be a printed circuit board (PCB) or a flexible substrate, without specific limitations. In some embodiments, the optomechanical structure 100 further includes a shielding cylinder 20 disposed on the substrate 11 and covering the barrier structure 13 (see also...). Figure 6 The shielding cylinder 20 is used for dust prevention and blocking ambient light. It can be attached to the substrate 11 by adhesive or fasteners, without specific limitations.

[0041] The barrier structure 13 is preferably opaque to light emitted from the first light source 12 and the second light source 16. The material of the barrier structure 13 is not particularly limited; for example, it can be made of plastic, and can be manufactured using an injection molding process. The barrier structure 13 has a first platform 132 and a second platform 134 parallel to the substrate 11. In one embodiment, the first platform 132 is higher than the second platform 134. The first platform 132 has a first opening 131 and a first space below it. The second platform 134 has a second opening 133 and a third opening 135 adjacent to each other and a second space and a third space below it, respectively. The openings and spaces serve as channels for providing light to enter and exit the barrier structure 13.

[0042] The first light source 12 is disposed within the first opening 131 (i.e., located within the first space) and electrically connected to the substrate 11 to receive control signals and power. The first light source 12 is illustrated here using a light-emitting diode (e.g., but not limited to, an infrared light-emitting diode) as an example, for emitting emitted light from the first opening 131 in a direction generally perpendicular to the substrate 11 to illuminate the working surface S. In some embodiments, to secure the first light source 12, the barrier structure 13 further includes a protruding structure 136 abutting against the first light source 12. It must be noted that, although... Figure 3 The protruding structure 136 extends laterally and vertically from the barrier structure 13, but this is for illustrative purposes only and not intended to limit the invention. In other embodiments, the protruding structure 136 may extend obliquely (upward or downward) from the barrier structure 13 to abut against the surface of the first light source 12. In other embodiments, the sidewalls of the barrier structure 13 surrounding the first opening 131 (or the first space) are made with a greater thickness to directly abut against the side of the first light source 12, rather than fixing the first light source 12 by the lateral protruding structure 136, i.e., the first light source 12 precisely conforms to the first space.

[0043] Lens 14 is disposed within the second opening 133 (or the second space) to guide reflected light from the working surface S, relative to the first light source 12, to the image sensor 18. In some embodiments, to allow lens 14 to be placed within the second opening 133, lens 14 may be cut to adjust its shape (e.g., non-circular cross-section). It must be noted that, although Figure 3 The second opening 133 shows that only one lens 14 is provided, but the present invention is not limited thereto. Depending on the application, a lens group containing more than one lens can be provided in the second opening 133, and the blocking structure 13 is made to support the lens group.

[0044] The second light source 16 is disposed within the third opening 135 (i.e., located within the third space) and electrically connected to the substrate 11 to receive control signals and power. The second light source 16 is illustrated here using a laser diode as an example (e.g., but not limited to, an infrared laser diode), whose emitted light exits the barrier structure 13 through the third opening 135 to illuminate the working surface S. In one embodiment, the second light source 16 and the first light source 12 illuminate different areas of the working surface S, respectively. In another embodiment, no optical elements are disposed within the third opening 135 to amplify the emitted light of the second light source 16.

[0045] Image sensor 18 is disposed below (or within) the third opening 135 and electrically connected to substrate 11 for transmitting and receiving signals. Image sensor 18 is, for example, a CMOS image sensor or a CCD image sensor. In one embodiment, second light source 16 and image sensor 18 are formed in the same chip package, which is configured and electrically connected to substrate 11. In this case, a blocking layer is preferably provided between second light source 16 and image sensor 18 to prevent the emitted light from second light source 16 from being directly received by image sensor 18. In other embodiments, the chip package is further configured with a processor, such as an application-specific integrated circuit (ASIC) or digital signal processor (DSP), to process the image signals acquired by image sensor 18.

[0046] Image sensor 18 has a photosensitive surface (e.g. Figures 3 to 5 The lower surface of the image sensor 18 is partially overlapped with the third opening 135 and the other part overlaps with the second opening 133 and the lens 14. In this way, a portion of the photosensitive surface of the image sensor 18 receives the reflected light from the second light source 16, which is reflected by the working surface S and enters the barrier structure 13 through the third opening 135; the other portion of the photosensitive surface of the image sensor 18 receives the reflected light from the first light source 12, which is received by the lens 14 within the second opening 133 and reflected by the working surface S.

[0047] In this embodiment, to prevent reflected light from the first light source 12 from being received by the image sensor 18 through the third opening 135, the first platform 132 blocks a portion of the first light source 12 (e.g., Figure 2 and Figure 3 The first platform 132 is partially obscured (with the other half exposed) to prevent reflected light from the first light source 12 from entering the third opening 135. The size of the obscured cross-sectional area is determined by the lateral distance between the first light source 12 and the image sensor 18, and the vertical distance between the first light source 12 and the working surface S. The inner surface of the first platform 132 can directly abut against the top surface of the first light source 12 to fix the first light source 12, or it can be separated from the first light source 12.

[0048] In this embodiment, different regions of the image frame from the image sensor 18 can be used by a processor (which is contained in the aforementioned chip package or coupled to the image sensor 18 via the substrate 11) to calculate the detection results of different light sources. The present invention can also utilize other configurations to prevent light from different light sources from interfering with each other.

[0049] Please refer to Figure 4 The diagram shows a cross-sectional view of the optomechanical structure and shielding cylinder 20 according to another embodiment of the present invention. In this embodiment, the first platform 132 does not block the first light source 12, by tilting the first light source 12 toward a direction away from the lens 14 (e.g., Figure 4The light emitted from the first light source 12 (facing downward to the right) leaves the first opening 131, so that the reflected light from the first light source 12 only reaches the second opening 133 and does not enter the third opening 135.

[0050] This embodiment and Figure 3 The only difference in this embodiment is that the first light source 12 is tilted (its light-emitting axis is not perpendicular to the substrate 11) to eliminate interference; the configuration of other components is the same. Figure 3 The same applies, so I will not repeat it here.

[0051] In this embodiment, since the first light source 12 is arranged at an angle, the blocking structure 13 may optionally include at least one protruding structure (two protruding structures 136 and 136' are shown here, but it is not limited to this) inside the first opening 131 to abut and fix the first light source 12. In other embodiments, the size of the first opening 131 (or the first space) may be directly made to conform to the size of the first light source 12, so that the first light source 12 is fixed and has a predetermined tilt angle after being placed in the first opening 131.

[0052] Please refer to Figure 5 The diagram shows a cross-sectional view of the optomechanical structure and shielding cylinder 20 according to another embodiment of the present invention. In this embodiment, the barrier structure 13 has a first platform 132, a second platform 134, and a third platform 134'. The first platform 132 has a first opening 131 and a first space below it; the second platform 134 has a second opening 133 and a second space below it; the third platform 134' has a third opening 135 and a third space below it, and the second platform 134 is lower than the first platform 132 and the third platform 134'. More specifically, in this embodiment, the sidewall of the third opening 135 is raised to prevent reflected light from the first light source 12 after reflection from the working surface S from entering the third opening 135. In one embodiment, the first platform 132 and the third platform 134' have the same height, but this is not a limitation. This embodiment and... Figure 3 The only difference in the optomechanical structure is that the sidewall of the third opening 135 (third space) is increased to be higher than the second platform 134; the configuration of other components is the same. Figure 3 The same applies, so I will not repeat it here.

[0053] The shielding cylinder 20 preferably has an inclined portion 201 and a transverse portion 203 inside (e.g., Figures 3 to 5As shown, the light source 16 is transparent to the emitted light of the second light source 16 and the first light source 12, respectively, or to the detection spectrum of the image sensor 18. The tilted portion 201 preferably allows the emitted light from the second light source 16 to refract (e.g., refracted towards the lower right in the figure) as it passes through, with the refraction angle configured such that reflected light from the working surface S and associated with the second light source 16 is transmitted to the image sensor 18 through the third opening 135 instead of through the second opening 133. The emitted light from the first light source 12 preferably does not refract when passing through the transverse portion 203.

[0054] In another embodiment, the lateral portion 203 may be configured to refract the emitted light from the first light source 12 toward the right side of the figure as it passes by, to achieve, as shown in the figure. Figure 4 This achieves the desired effect. Therefore, it is not necessary to tilt the first light source 12, yet the emitted light from the first light source 12 can still be prevented from entering the third opening 135 after reflection.

[0055] It is understood that, although the above embodiments state that the reflected light related to the first light source 12 does not enter the third opening 135 and the reflected light related to the second light source 16 does not enter the second opening 133, this refers to the fact that most of the energy of the emitted light from the first light source 12 and the second light source 16 does not enter the openings. Because the working surface S has a light scattering effect, a small portion of the emitted light from the first light source 12 will still be scattered to the third opening 135 and a small portion of the emitted light from the second light source 16 will still be scattered to the second opening 133. However, since the energy proportion of the scattered light is very low, it is considered here that it does not affect the detection efficiency.

[0056] It is understood that the shapes of the openings in the above embodiments are for illustrative purposes only and are not intended to limit the present invention.

[0057] Please refer to Figures 7 to 9 As shown, Figure 7 This is a perspective view of the optomechanical structure 700 and its shielding cylinder 80 according to the second embodiment of the present invention; Figure 8 yes Figure 7 A cross-sectional view of the optomechanical structure 700 and its shielding cylinder 80 along line B-B'; and Figure 9 This is a top view of the optomechanical structure of the second embodiment of the present invention.

[0058] In the second embodiment, as described above Figures 1 to 3 Identical components are designated by the same reference numerals. For example, the substrate 11, first light source 12, second light source 16, and image sensor 18 in the second embodiment are the same as those in the above embodiments, and therefore will not be described again here. In the second embodiment, the lens 74 is, for example, a condenser lens, which can also be cut to adjust its shape. The lens 74 can be a single lens or a lens group.

[0059] In the second embodiment, the first light source 12 is a light-emitting diode (LED) electrically connected to the substrate 11, used to emit light of a first wavelength. There is no specific limitation on the manner in which the first light source 12 is electrically connected to the substrate 11. The second light source 16 is a laser diode (LD) disposed on the substrate 11, used to emit light of a second wavelength. In one embodiment, the first wavelength is different from the second wavelength to produce different reflection and scattering effects relative to the working surface S of different materials. For example, the first wavelength is 600 to 660 nanometers and the second wavelength is 820 to 880 nanometers, but this is not a limitation. The image sensor 18 is also disposed on the substrate 11.

[0060] As described above, the second light source 16 and the image sensor 18 can be independent components (each disposed on the substrate 11) or packaged in the same chip package, without any specific limitations.

[0061] In the second embodiment, the carrier (or encapsulation structure) 73 is, for example, manufactured by injection molding and fixed to the substrate 11. Figure 9 The display carrier 73 has two wings (displayed on the upper and lower sides) for fixing to the substrate 11 by fasteners. The carrier 73 can also be fixed to the substrate 11 in other ways, such as by adhesive.

[0062] The carrier 73 includes a light source holder 732 (as one embodiment of a light source housing structure), a lens holder 734 (as one embodiment of an optical carrier structure), a receiving space 735 (as a chip housing space located within the chip housing structure), and an inclined wall 736 (referred to as a filter sidewall when it has a filtering function). In one embodiment, the lens holder 734 is in the lateral direction (e.g., Figure 8 The lens holder 734 is located between the light source frame 732 and the inclined wall surface 736 in the left-right direction, and the lens holder 734 is higher than the light source frame 732 and the inclined wall surface 736 in the longitudinal direction.

[0063] In one embodiment, the inclined wall 736 is integrally formed with the lens holder 734 (e.g., the inclined wall 736 is part of the lens holder 734) and extends from the lens holder 734 toward the side away from the light source holder 732 (e.g., Figure 8 The inclined wall 736 extends downward at an angle (left side). The angle of inclination of the inclined wall 736 can be determined according to the height of the lens holder 734, i.e., the lateral distance between the lens holder 734 and the second opening 733 (shown as the upper plate of the receiving space 735 and adjacent to the inclined wall 736).

[0064] In one embodiment, the light source holder 732 and the lens holder 734 are two independent components (e.g., separately manufactured and made of different materials) that are combined (e.g., snap-fitted or glued, without specific limitations) to form a single unit as part of the support member 73. For example Figure 8The display light source bracket 732 is attached to the lens bracket 734 from below.

[0065] The light source holder 732 is used to fix the first light source 12 (e.g., inserted into a holder hole) so that the first light source 12 illuminates the working surface S opposite to the substrate 11. That is, the light source holder 732 has a light source accommodating space for accommodating the first light source 12. It must be noted that, although... Figure 8 The diagram shows the first light source 12 being vertically fixed in the light source holder 732, but the invention is not limited thereto. In other embodiments, the first light source 12 may be fixed at an angle in the light source holder 732, for example, tilted toward the lens holder 734.

[0066] Lens holder 734 in the first direction (e.g.) Figure 8 The lens holder 734 is adjacent to the light source holder 732 (located on the left side) and has a first opening 731 for setting and fixing the lens 74. That is, the lens holder 734 has a lens accommodating space for accommodating the lens 74.

[0067] The receiving space 735 of the chip housing structure is used to accommodate the second light source 16 and the image sensor 18. Furthermore, the carrier 73 also has a second opening 733 located in the chip housing structure and communicating with the receiving space 735, allowing the emitted light from the second light source 16 to exit the receiving space 735. When the carrier 73 is composed of two independently manufactured light source holders 732 and lens holders 734, the receiving space 735 is located within the lens holder 734 and the second opening 733 is located on the lens holder 734. In one embodiment, the second light source 16 is positioned directly below the second opening 733.

[0068] The inclined wall 736 is adjacent to the lens holder 734 in the first direction and is positioned above the image sensor 18 in the receiving space 735. Preferably, the light source holder 732 also has a through hole located between the first opening 731 and the receiving space 735 to allow reflected light from the lens 74 to pass through and reach the image sensor 18.

[0069] In the second embodiment, reflected light associated with the first light source 12 (reflected by the working surface S) passes through the lens 74 and is transmitted to the image sensor 18. In one embodiment, a portion of the receiving space 735 is also located below the lens holder 734, so that a portion of the image sensor 18 within the receiving space 735 can be located below the lens 74. Reflected light associated with the second light source 16 (reflected by the working surface S) passes through the inclined wall 736 and is transmitted to the image sensor 18.

[0070] To avoid interference between the emitted light from the two light sources, in one embodiment, the light source frame 732 is made of an opaque material; the inclined wall surface 736 is opaque to the emitted light of the first wavelength of the first light source 12 but transparent to the emitted light of the second wavelength of the second light source 16; the lens 74 is opaque to the emitted light of the second wavelength of the second light source 16 but transparent to the emitted light of the first wavelength of the first light source 12.

[0071] The emission angle θ2 of the first light source 12 can be configured such that the emitted light of the first wavelength will not be reflected to the inclined wall 736. The inclined wall 736 may not have a light filtering effect, that is, it is made of a transparent material.

[0072] In an embodiment where the lens holder 734 and the inclined wall 736 are integrally formed, the lens holder 734 is opaque to the first wavelength but transparent to the second wavelength.

[0073] In order for the image sensor 18 to sense features of the same area on the working surface S, the first illumination area of ​​the first light source 12 (displayed with an emission angle θ2) on the working surface S at a preset distance partially overlaps with the second illumination area of ​​the second light source 16 (displayed with an emission angle θ6) on the working surface S, such as... Figure 8 The oblique area of ​​the working surface S.

[0074] In the second embodiment, since the transmission of a specific wavelength of light is limited by the configuration of the lens 74 and the inclined wall 736 (e.g. by selecting the material), the emitted light of the first light source 12 and the second light source 16 will not interfere with each other. Therefore, there is no need to set a light-blocking member in front of the first light source 12 to limit its emission angle θ2, thus improving the light utilization efficiency.

[0075] In one embodiment, the second embodiment also includes a shielding cylinder 80 disposed on the substrate 11 and covering the carrier 73 to protect the entire optomechanical system. The walls of the shielding cylinder 80 (e.g., Figure 7 Displayed as an elliptical cylinder, it is configured as a vertical substrate 11 to facilitate manufacturing and improve production yield. The shielding cylinder 80 has a separating surface 80S for separating two spaces, wherein one side of the separating surface 80S (e.g., Figure 7 and Figure 8 The upper surface) faces the working surface S during operation, while the other side (e.g.) Figure 7 and Figure 8 The lower surface of the shielding cylinder 80 faces the support member 73. In one embodiment, the entire shielding cylinder 80 is made of transparent material. In another embodiment, only the partition surface 80S of the shielding cylinder 80 is made of transparent material, while the walls of the shielding cylinder 80 are opaque, for example, coated with an opaque material.

[0076] It should be noted that although the filter structure (i.e., filter sidewall 736) used in the above embodiments to block the first wavelength and allow the second wavelength to pass through is described as an inclined wall, the present invention is not limited thereto. In other embodiments, the filter structure may also be configured as a horizontal plate located above the image sensor 18, for example, extending horizontally from the lens holder 734 and then vertically downward, without any particular limitation, as long as the reflected light from the second light source 16 can pass through the filter structure (e.g., the horizontal plate) before reaching the light sensor 18.

[0077] In summary, to ensure smooth operation on different working surfaces, besides enhancing the processor's post-processing capabilities, using multiple light sources operating on relatively different working surfaces is also an option. However, avoiding interference between different light sources remains a problem to be solved. Therefore, this invention proposes an optomechanical system for a navigation device and its carrier (e.g., Figures 7 to 9 When the working surface changes, different light sources can be used to enhance image features in the image frame. The optomechanic of this embodiment, through the configuration of the lenses and the transmittance wavelengths of the inclined walls, ensures that the emitted and reflected light from different light sources do not interfere with each other, thereby improving judgment accuracy.

[0078] While the present invention has been disclosed through the foregoing examples, it is not intended to limit the invention. Anyone skilled in the art to which this invention pertains can make various modifications and alterations without departing from the spirit and scope of the invention. Therefore, the scope of protection of this invention shall be determined by the appended claims.

Claims

1. An optical engine structure, comprising: a package structure, comprising: a light source housing structure having a light source housing space; an optical bearing structure having a lens housing space; a chip housing structure having a chip housing space; and a light filtering side wall above the chip housing space; a first light source disposed in the light source housing space; a second light source disposed in the chip housing space; a lens disposed in the lens housing space; and an image sensor disposed in the chip housing space and above the light filtering side wall, wherein the light filtering side wall is opaque to a first wavelength of the first light source but transparent to a second wavelength of the second light source, and the lens is opaque to the second wavelength but transparent to the first wavelength, wherein the optical bearing structure is integrally formed with the light filtering side wall, emitted light from the first light source is transmitted to the image sensor through the lens after being reflected by a work surface, and emitted light from the second light source is transmitted to the image sensor through the light filtering side wall after being reflected by the work surface, the optical bearing structure is higher than the light source housing structure and the light filtering side wall, and the optical bearing structure is between the light source housing structure and the light filtering side wall in a lateral direction. The light source housing structure and the optical bearing structure are two independent components combined to form an integral structure.

3. The optical engine structure of claim 1, wherein 2. The optical engine structure of claim 1, wherein, a first illumination area of the work surface at a predetermined distance of the first light source partially overlaps a second illumination area of the work surface at the predetermined distance of the second light source.

4. The optical engine structure of claim 1, wherein the first light source is a light emitting diode, the second light source is a laser diode, and the first wavelength of the first light source is different from the second wavelength of the second light source.

5. The optical engine structure of claim 1, further comprising: a substrate, the package structure disposed on the substrate; and a wall surface of the shielding cylinder is perpendicular to the substrate.

6. A package structure of an optical engine, comprising: A shielding cylinder is arranged on the substrate and covers the packaging structure, wherein, a light source housing structure having a light source housing space for accommodating a first light source; an optical bearing structure having a lens housing space; a chip housing structure having a chip housing space for accommodating a second light source and an image sensor; and an inclined wall surface disposed above the image sensor within the chip housing space of the chip housing structure, wherein the inclined wall surface is transparent to emitted light of the second light source but opaque to emitted light of the first light source, the optical bearing structure is between the light source housing structure and the inclined wall surface in a lateral direction, the optical bearing structure is higher than the light source housing structure and the inclined wall surface, and the optical bearing structure is between the light source housing structure and the inclined wall surface in a lateral direction. ​ ​ The inclined wall is integrally formed with the optical support structure and extends downwardly and obliquely from the optical support structure toward a side away from the light source housing structure, The reflected light of the emitted light of the first light source reflected by the work surface is transmitted to the image sensor through the lens housing space, and the reflected light of the emitted light of the second light source reflected by the work surface is transmitted to the image sensor through the light filtering side wall.

7. The package structure of claim 6, wherein, The light source housing structure and the optical support structure are two independent components and are combined to form an integral.

8. A package structure of an optical engine, the package structure comprising: a light source housing structure having a light source housing space for accommodating a first light source; an optical support structure having a lens housing space; a chip housing structure having a chip housing space for accommodating a second light source and an image sensor, and having an opening; and a light filtering side wall located above the chip housing space and laterally adjacent to the opening and being opaque to the emitted light of the first light source but transparent to the emitted light of the second light source, wherein the light filtering side wall is integrally formed with the optical support structure, the optical support structure is between the light source housing structure and the light filtering side wall in a lateral direction, and the optical support structure is higher than the light source housing structure and the light filtering side wall, the reflected light of the emitted light of the first light source reflected by a work surface is transmitted to the image sensor through the lens housing space, and the reflected light of the emitted light of the second light source reflected by the work surface is transmitted to the image sensor through the light filtering side wall.

9. The package structure of claim 8, wherein, The light filtering side wall extends downwardly and obliquely from the optical support structure.

10. The package structure of claim 8, wherein, The light source housing structure and the optical support structure are two independent components and are combined to form an integral.

11. The package structure of claim 8, wherein, The light filtering side wall is an inclined wall.

12. The package structure of claim 8, wherein, A part of the chip housing space is located below the optical support structure.

Images