Integrated optical device

Abstract

The utility model discloses an integrated optical device which comprises a base and an optical element. The number of the optical elements is at least two, the base comprises a base plate, the base plate is provided with installation grooves corresponding to the number of the optical elements, the installation grooves are formed by downwards sinking the upper surface of the base plate, and the optical elements are partially arranged in the installation grooves and fixed to the base plate. The part, exposed out of the upper surface of the substrate, of the optical element is a light transmission part, so that the space between the adjacent light transmission parts can form a light transmission channel.

Description

Technical Field

[0001] The utility model relates to optical fiber technology, in particular to an integrated optical device. Background Art

[0002] Traditional fiber optic devices are mostly packaged coaxially and then fused together to form a multifunctional module containing multiple devices, as disclosed in Chinese patent application number 202110460518.3. However, the fiber fusion and coiling process results in a large size for this multifunctional module, hindering its miniaturization.

[0003] Some spatial composite systems are currently being developed, but due to the limitations of spatial optical components, they are often large and impractical for practical use. For example, the optical building block system developed by the applicant's utility model, as shown in Chinese patent application number 202210186150.0, solves the stability issues of traditional large-scale optical systems, but the scale is still large and cannot replace traditional optical components.

[0004] Furthermore, existing structures for constructing spatial optical paths typically mount optical elements 3' on the top surface of a substrate 11' and secure them with various structural components 2' to form a composite optical system. With increasing demand for system miniaturization, if the substrate 11' is too thin, deformation may occur (e.g., due to temperature and stress). However, if the substrate 11' is too thick, the height of the entire system cannot be reduced, making miniaturization difficult.

[0005] Therefore, there is room for further improvement. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide an integrated optical device in view of the deficiencies in the above-mentioned prior art, which can not only improve the stability but also reduce the package size.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: an integrated optical device, including a base and an optical element; characterized in that:

[0008] There are at least two optical elements, and the base includes a substrate. The substrate is provided with mounting grooves corresponding to the number of optical elements. The mounting grooves are formed by the upper surface of the substrate being recessed downward. The optical elements are partially placed in the mounting grooves and fixed to the substrate. The portion of the optical element exposed above the upper surface of the substrate is a light-transmitting portion, so that the space between adjacent light-transmitting portions can constitute a light transmission channel.

[0009] By partially placing the optical element in the substrate, the fixing area with the substrate is increased, which is beneficial to the stability of the fixation. Since the optical element is partially placed in the substrate, the supporting structure of the optical element is partially in the mounting groove of the substrate, which can greatly reduce the height of the system. The substrate, as part of the supporting structure, ensures the rigidity of the substrate, improves the overall stability of the entire system, and reduces the height of the entire system. After the fixed part of the optical element and the substrate is placed in the substrate, the distance between the optical elements can be reduced, and light transmission can be directly achieved by using space, thereby eliminating the need for fiber coiling in the entire integrated system, which not only improves stability but also reduces the package size.

[0010] To facilitate the fixation of the optical element and the substrate, the integrated optical device also includes a fixing bracket, which is placed in the mounting groove and arranged on the periphery of the portion of the optical element located in the mounting groove. The fixing bracket is fixed to the optical element and the substrate respectively.

[0011] Preferably, the fixing bracket is in contact with the wall surface of the installation groove, and the fixing bracket is bonded and fixed to the base plate.

[0012] Furthermore, since the overall reliability may be affected after the substrate is grooved, a cover is provided at the bottom of the substrate, thereby reducing the system height without reducing the reliability of the system, and moisture, dust and other substances will not penetrate into the system from the bottom.

[0013] Preferably, the base plate and the cover plate are made of the same material.

[0014] Furthermore, to facilitate the input and output of light, the integrated optical device further includes a fixing base, on which an optical fiber is fixed.

[0015] Furthermore, the combination of the base and the optical element has at least two groups, and the bases are perpendicular to each other, thereby facilitating the design of multi-dimensional composite devices, and the integrated optical device can be made into a three-dimensional optical path, further reducing the size of the system, and also realizing the construction of complex optical paths, and meeting various different space requirements in the construction of the same optical path.

[0016] Compared with the prior art, the advantages of the present invention are: by placing the optical element partially in the substrate, the fixing area with the substrate is increased, which is beneficial to the stability of the fixation; and since the optical element is partially placed in the substrate, the supporting structure of the optical element is partially in the mounting groove of the substrate, which can greatly reduce the height of the system. The substrate, as part of the supporting structure, ensures the rigidity of the substrate, improves the overall stability of the entire system, and reduces the height of the entire system; after the fixed part of the optical element and the substrate is placed in the substrate, the distance between the optical elements can be reduced, and the space can be directly used to realize the transmission of light, thereby eliminating the need for fiber coiling in the entire integrated system, which not only improves stability but also reduces the package size; multi-dimensional composite devices can be easily designed, and the integrated optical device can be made into a three-dimensional optical path, further reducing the size of the system, and can also realize complex optical path construction, and can also meet various different space requirements in the construction of the same optical path. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of an integrated optical device according to a first embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of one of the optical modules of the integrated optical device of the first embodiment of the present utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the decomposition structure;

[0020] Figure 4 This is a schematic diagram of the exploded structure of one of the optical modules of the integrated optical device of the first embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the exploded structure of one of the optical modules of the integrated optical device of the first embodiment of the present utility model;

[0022] Figure 6 This is a schematic diagram of the exploded structure of one of the optical modules of the integrated optical device of the first embodiment of the present utility model;

[0023] Figure 7 This is a schematic diagram of the exploded structure of one of the optical modules of the integrated optical device of the first embodiment of the present utility model;

[0024] Figure 8 This is a schematic diagram of the exploded structure of one of the optical modules of the integrated optical device of the first embodiment of the present utility model;

[0025] Figure 9 This is a schematic diagram of the application of the integrated optical device of the first embodiment of the utility model;

[0026] Figure 10 This is a schematic diagram of an application of an integrated optical device according to a second embodiment of the present utility model;

[0027] Figure 11 This is a schematic diagram of the application of the integrated optical device of the second embodiment of the utility model (with Figure 10 different perspectives);

[0028] Figure 12 Schematic diagram of an integrated optical device in the prior art. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] Example 1

[0032] See also Figures 1 to 3 An integrated optical device includes a base 1, a fixing bracket 2 and an optical element 3. The optical element 3 can be selected as needed, such as a beam splitter, a reflector, a parallel plate, etc.

[0033] The base 1 includes a substrate 11, on which a mounting groove 111 is provided, which is formed by the upper surface of the substrate 11 being recessed downward. The optical element 3 is partially placed in the mounting groove 111, which can be supported on the bottom surface of the mounting groove 111, and the portion of the optical element 3 exposed above the upper surface of the substrate 11 is the light-passing portion 31. The mounting bracket 2 is placed in the mounting groove 111, and is arranged on the periphery of the portion of the optical element 3 located in the mounting groove 111, and can partially surround the periphery of the optical element 3, or completely surround the periphery of the optical element 3. The shape and size of the mounting groove 111 are respectively adapted to the overall shape and size of the mounting bracket 2 and the optical element 3, and the fixing bracket 2 is in contact with the wall of the mounting groove 111. Figures 2 and 3 As shown in , the optical element 3 is in the form of a thin sheet, there are two fixing brackets 2, each fixing bracket 2 is a semi-cylinder, and is respectively arranged on two opposite sides of the optical element 3, and the cross section of the mounting groove 111 is circular.

[0034] The fixing bracket 2 is secured to the base 11 with glue. Since the fixing bracket 2 is positioned within the substrate 11, the optical element 3 support structure is partially located within the mounting groove 111 of the substrate 11, significantly reducing the system height. This also increases the bonding area between the fixing bracket 2 and the mounting groove 111 of the substrate 11, significantly increasing the glue bonding area and improving reliability. As part of the supporting structure, the substrate 11 ensures its rigidity while reducing the overall system height.

[0035] Since the substrate 11 may be affected in terms of overall reliability after being grooved, a cover plate 12 is provided at the bottom of the substrate 11. The thickness of the cover plate 12 is ( Figure 2 The vertical dimensions (as shown in FIG) can be smaller than base plate 11, and cover plate 12 can be glued to base plate 11. Preferably, base plate 11 and cover plate 12 are made of the same material. This reduces system height without compromising system reliability, preventing moisture, dust, and other substances from penetrating the system from the bottom.

[0036] An optical element 3 and its corresponding fixing bracket 2 constitute an optical module and cooperate with the base 1. The integrated optical device may include two or more such optical modules. When the number of optical modules is greater than one, each optical module shares one base 1, and the mounting groove 111 of the substrate 11 of the base 1 is set according to the corresponding optical element 3.

[0037] exist Figure 1 In the embodiment shown, there are six optical modules, each of which can be the same or different, forming a multifunctional optical device. Figure 4 , wherein the fixing bracket 2 of an optical module can be in a stacked shape; see Figure 5, one of the fixing brackets 2 of the optical module can be triangular, so that the cross section of the corresponding mounting groove 111 is rectangular; see Figure 6 , the fixing bracket 2 of one optical module can be a rectangular parallelepiped, and the overall shape of the bottom of the fixing bracket 2 and the optical element 3 is also a rectangular parallelepiped, so the cross section of the corresponding mounting groove 111 is rectangular; see Figure 7 , the bottom of the optical element 3 can be used as a fixing bracket and directly fixed to the substrate 11; see Figure 8 , the fixing bracket 2 of one optical module can be a rectangular parallelepiped, and the widths of the fixing bracket 2 and the optical element 3 are different, so the cross section of the corresponding mounting groove 111 is a cross shape.

[0038] The form of the fixing bracket 2 is not limited to the above examples and can be selected according to needs.

[0039] See also Figure 9 When used, the integrated optical device further includes a fixing base 4 to which the optical fiber 5 can be fixed.

[0040] A conventional system consisting of 11 optical components has an overall size of approximately 86*86*6mm due to the need to reserve space for the fiber coil. However, using the structure of this embodiment, this size can be significantly reduced to 15*9.5*4.5mm. The spacing between two optical components 3 can be 2mm or less, which can be set as needed, significantly reducing the system volume. Due to the reduced size of each optical module, the optical path between each optical component 3 no longer needs to be established through optical fiber 5. Instead, light propagates directly in the space between the two optical components 3 (forming the optical transmission channel), and the light is then coupled into the optical fiber at output. This is particularly suitable for fields such as communications and sensing.

[0041] Example 2

[0042] See also Figure 10 and Figure 11 This embodiment differs from the first embodiment in that the integrated optical device includes at least two bases 1. As shown in the diagram of this embodiment, there are three bases 1, one of which is horizontally arranged, while the remaining two bases 1 are vertically arranged, and are arranged on the sides of the horizontal base 1 and perpendicular to each other, so that the three bases 1 do not interfere with each other. The relationship between the remaining optical elements 3 and the fixing bracket 2 and the base 1 is the same as in the first embodiment.

[0043] Therefore, when two bases 1 are provided, the two bases 1 are perpendicular to each other, forming a two-dimensional optical system. When three bases 1 are provided, the bases 1 are perpendicular to each other in pairs, forming a three-dimensional optical system.

[0044] In this way, the integrated optical device can be made into a three-dimensional optical path, further reducing the size of the system, realizing the construction of complex optical paths, and meeting various different space requirements in the construction of the same optical path.

Claims

1. An integrated optical device comprising a base (1) and an optical element (3); characterized in that: The optical elements (3) have at least two, and the base (1) includes a substrate (11). The substrate (11) is provided with mounting grooves (111) corresponding to the number of the optical elements (3). The mounting grooves (111) are formed by the upper surface of the substrate (11) being recessed downward. The optical elements (3) are partially placed in the mounting grooves (111) and fixed to the substrate (11). The portion of the optical element (3) exposed above the upper surface of the substrate (11) is a light-transmitting portion (31), so that the space between adjacent light-transmitting portions (31) can form a light transmission channel.

2. The integrated optical device according to claim 1, wherein: The integrated optical device further comprises a fixing bracket (2), the fixing bracket (2) being placed in the mounting groove (111), the fixing bracket (2) being arranged on the periphery of the portion of the optical element (3) located in the mounting groove (111), and the fixing bracket (2) being fixed to the optical element (3) and the substrate (11) respectively.

3. The integrated optical device according to claim 2, wherein: The fixing bracket (2) is fitted with the wall surface of the installation groove (111), and the fixing bracket (2) is bonded and fixed to the base plate (11).

4. The integrated optical device according to claim 1, wherein: A cover plate (12) is provided at the bottom of the base plate (11).

5. The integrated optical device according to claim 4, characterized in that: The base plate (11) and the cover plate (12) are made of the same material.

6. The integrated optical device according to claim 1, wherein: The integrated optical device further comprises a fixing seat (4), on which an optical fiber (5) is fixed.

7. The integrated optical device according to any one of claims 1 to 6, characterized in that: The combination of the base (1) and the optical element (3) comprises at least two groups, and each base (1) is perpendicular to each other.

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