Optical module and white light sensor

Abstract

The utility model belongs to the technical field of sensors, and particularly relates to an optical module and a white light sensor. The optical module comprises a module support, a transmitting element used for transmitting light, a receiving element arranged on the same side with the transmitting element relative to the object to be measured and a reflecting structure used for reflecting the light, and the transmitting element, the receiving element and the reflecting structure are all arranged on the module support. The reflection structure is used for reflecting the light emitted by the emission element to the object to be measured so as to reduce the distance between the emission element and the object to be measured. The white light sensor can solve the problem of how to reduce the size of the white light sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and particularly relates to an optical module and a white light sensor. Background Art

[0002] A white light sensor refers to an optoelectronic sensor whose light source is a white light LED and the position of the emitting end lens is adjustable, so as to focus into light spots of different sizes at different distances. A movable lens is usually arranged at the emitting end of the white light sensor, and the position of the emitting end lens can be adjusted back and forth, so that light spots of different sizes can be focused at different distances, and the size of the light spots can be adjusted.

[0003] However, the existing white light sensors are large in size, not convenient to carry, and not convenient to use in a narrow space. Summary of the Utility Model

[0004] The purpose of the embodiments of the present application is to provide an optical module and a white light sensor, aiming to solve the problem of how to reduce the volume of the white light sensor.

[0005] To achieve the above purpose, the technical solution adopted in the present application is:

[0006] In a first aspect, an optical module is provided for detecting a to-be-detected object. The optical module includes a module bracket, an emitting element for emitting light, a receiving element disposed on the same side of the to-be-detected object as the emitting element, and a reflecting structure for reflecting the light. The emitting element, the receiving element, and the reflecting structure are all disposed on the module bracket. The reflecting structure is used to reflect the light emitted by the emitting element to the to-be-detected object, so as to reduce the distance between the emitting element and the to-be-detected object.

[0007] In some embodiments, the reflecting structure includes a first mirror and a second mirror. Both the first mirror and the second mirror are located between the emitting element and the to-be-detected object. The first mirror is used to reflect the light emitted by the emitting element to the second mirror, and the second mirror is used to reflect the light reflected by the first mirror to the to-be-detected object.

[0008] In some embodiments, the first mirror is closer to the to-be-detected object than the second mirror, and the reflecting surfaces of the first mirror and the second mirror are parallel to each other.

[0009] In some embodiments, the optical module further includes an emitting lens, and the light reflected by the reflecting structure is emitted through the emitting lens. The emitting lens is used to converge the divergent light beam emitted by the emitting element into a collimated light beam.

[0010] In some embodiments, the optical module further includes a lens barrel for mounting the emission lens and an adjustment structure for adjusting the lens barrel. The lens barrel is slidably disposed on the module bracket in a first direction, and the adjustment structure is configured to drive the lens barrel to reciprocate in the first direction.

[0011] In some embodiments, the adjustment structure is slidably disposed on the module bracket in a second direction. The lens barrel is connected with a transmission member. The adjustment structure has a guiding surface, and the transmission member is elastically in contact with the guiding surface. The adjustment structure can be driven by an external force and move in the second direction, so that the guiding surface guides the transmission member to reciprocate in the first direction. The first direction and the second direction are disposed at an angle.

[0012] In some embodiments, the module bracket has an installation cavity for receiving the lens barrel and allowing the lens barrel to move. A sliding groove communicating with the installation cavity is formed on the module bracket. The sliding groove extends in the first direction. The transmission member passes through the sliding groove and extends in a direction away from the installation cavity to contact the guiding surface.

[0013] In some embodiments, the guiding surface is an inclined surface, and the inclined surface is inclined relative to the first direction.

[0014] In some embodiments, the optical module further includes a receiving lens. The receiving lens is disposed on the module bracket, and the light reflected by the object to be measured passes through the receiving lens and is focused on the receiving element.

[0015] In a second aspect, a white light sensor is provided, and the white light sensor includes the above-mentioned optical module.

[0016] In the optical module provided by the present application, by providing a reflection structure on the optical path between the emission element and the object to be measured, the reflection structure can deflect the light between the emission element and the object to be measured, thereby compressing the optical path between the emission element and the object to be measured, reducing the distance between the emission element and the object to be measured. The emission element can be disposed closer to the object to be measured, so as to reduce the size of the optical module, and further reduce the volume of the white light sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1It is a schematic diagram of the principle of the white light sensor provided by the embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of the overall structure of the optical module provided by the embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of a partial structure of the optical module provided by one embodiment of the present application;

[0021] Figure 4 It is an optical path diagram of the optical module provided by the embodiment of the present application;

[0022] Figure 5 It is a schematic diagram of a partial structure of the optical module provided by another embodiment of the present application;

[0023] Figure 6 It is Figure 5 a schematic diagram of the adjustment structure in;

[0024] Figure 7 It is a schematic diagram of the overall structure of the white light sensor provided by the embodiment of the present application.

[0025] Among them, each reference numeral in the figure:

[0026] 10, module bracket; 11, chute; 20, transmitting element; 30, receiving element; 40, reflecting structure; 41, first reflector; 42, second reflector; 51, lens barrel; 52, transmitting lens; 53, transmission member; 60, receiving lens; 70, adjustment structure; 71, adjustment plate; 72, adjustment block; 721, connecting portion; 722, extending portion; 7221, guiding surface; 73, rotating rod; 81, first window mirror; 82, second window mirror; 200, object to be measured; 300, light ray. Detailed implementation manners

[0027] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0030] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0031] Please refer to Figures 1 to 7 , an embodiment of the present application provides an optical module for detecting a to-be-detected object 200. The optical module includes a module bracket 10, a transmitting element 20 for emitting light 300, a receiving element 30 disposed on the same side of the to-be-detected object 200 as the transmitting element 20, and a reflecting structure 40 for reflecting the light 300. The transmitting element 20, the receiving element 30, and the reflecting structure 40 are all disposed on the module bracket 10. The reflecting structure 40 is used to reflect the light 300 emitted by the transmitting element 20 to the to-be-detected object 200 to reduce the distance between the transmitting element 20 and the to-be-detected object 200.

[0032] Understandably, the optical module of the present application can be applied to a white light sensor. The reflection structure 40 reflects the light 300 emitted by the emitting element 20 to the object to be measured 200. The object to be measured 200 reflects the light 300, and the light 300 reflected by the object to be measured 200 irradiates the receiving element 30. The receiving element 30 receives the light 300 reflected back by the object to be measured 200 and converts the optical signal into an electrical signal, thereby realizing the detection of the object to be measured 200.

[0033] Understandably, the optical module further includes a controller. The controller is communicatively connected to the emitting element 20 and the receiving element 30 respectively. The controller is used to control the working state of the emitting element 20 and to receive the signal sent by the receiving element 30.

[0034] The controller can be a measurement and control circuit with a microprocessor as the core. The controller can control the time when the emitting element 20 emits the light 300, the intensity of the emitted light 300, the duration of the emitted light 300, etc. After the light 300 reflected by the object to be measured 200 is collected by the receiving element 30, the receiving element 30 can send an electrical signal to the controller.

[0035] A fixing structure can be provided on the module bracket 10 to fix the emitting element 20, the receiving element 30, and the reflection structure 40. The emitting element 20, the receiving element 30, and the reflection structure 40 can be fixed to the module bracket 10 by connection methods such as snap connection or bonding. The module bracket 10 can also be provided with an opening for passing a cable to connect internal optical or electrical devices.

[0036] In the embodiment of the present application, the emitting element 20, the receiving element 30, and the reflection structure 40 are installed together, which can overcome the problem that it is not easy to ensure the accuracy and stability of the positions between multiple optical elements, thereby improving the stability of the white light sensor.

[0037] Understandably, when the reflection structure 40 is not provided, the transmission path of the light 300 emitted by the emitting element 20 is a straight line. At this time, the emitting element 20 can only be arranged on the straight path of the light 300 transmission. By providing the reflection structure 40, the position of the emitting element 20 in the module bracket 10 can be flexibly adjusted, and the light 300 between the emitting element 20 and the object to be measured 200 can be turned, which can reduce the extension length of the optical path on the module bracket 10, that is, the size of the optical module can be reduced.

[0038] The optical module provided by this application sets a reflection structure 40 on the light path 300 between the emitting element 20 and the object to be measured 200. The reflection structure 40 can turn the light path 300 between the emitting element 20 and the object to be measured 200, thereby compressing the optical path between the emitting element 20 and the object to be measured 200, reducing the distance between the emitting element 20 and the object to be measured 200. The emitting element 20 can be set closer to the object to be measured 200, which can reduce the size of the optical module, and further reduce the volume of the white light sensor.

[0039] In one possible embodiment, as Figure 3 and Figure 4 shown, the reflection structure 40 includes a first mirror 41 and a second mirror 42. Both the first mirror 41 and the second mirror 42 are located between the emitting element 20 and the object to be measured 200. The first mirror 41 is used to reflect the light 300 emitted by the emitting element 20 to the second mirror 42, and the second mirror 42 is used to reflect the light 300 reflected by the first mirror 41 to the object to be measured 200.

[0040] By setting the first mirror 41 and the second mirror 42, the first mirror 41 and the second mirror 42 can perform two - time reflection on the light 300 emitted by the emitting element 20, which is equivalent to folding the optical path between the object to be measured 200 and the emitting element 20 twice, making the degree of bending of the optical path between the object to be measured 200 and the emitting element 20 towards the object to be measured 200 greater, and the emitting element 20 can be closer to the object to be measured 200.

[0041] In another possible embodiment, the reflection structure 40 can only include one mirror, and this mirror can perform one - time reflection on the light 300 emitted by the emitting element 20, that is, the optical path between the object to be measured 200 and the emitting element 20 becomes a broken - line structure, and the optical path between the object to be measured 200 and the emitting element 20 bends towards the object to be measured 200. Therefore, the emitting element 20 can be closer to the object to be measured 200, thereby reducing the size of the white light sensor.

[0042] In some embodiments, the first mirror 41 is closer to the object to be measured 200 than the second mirror 42. Therefore, the optical path can be further compressed, making the degree of compression of the optical path greater. Further, the reflecting surfaces of the first mirror 41 and the second mirror 42 are parallel to each other, which can make the setting of the optical path more beautiful.

[0043] In addition, in the embodiments of this application, the emitting element can be a white - light LED, and the receiving element can be a photodiode.

[0044] In some embodiments, the optical module further includes an emitting lens 52. The light 300 reflected by the reflective structure 40 is emitted through the emitting lens 52. The emitting lens 52 is used to converge the divergent light beam emitted by the emitting element 20 into a collimated light beam, thereby improving the measurement accuracy.

[0045] Furthermore, the optical module also includes a lens barrel 51 for installing the emitting lens 52 and an adjustment structure 70 for adjusting the lens barrel 51. The lens barrel 51 is slidably arranged on the module bracket 10 along the first direction a, and the adjustment structure 70 is used to drive the lens barrel 51 to reciprocate along the first direction a.

[0046] It can be understood that the emitting element 20 and the object to be measured 200 can be arranged on opposite sides of the emitting lens 52 along the first direction a. Therefore, by adjusting the structure 70, the emitting lens 52 can be adjusted to move back and forth along the first direction a, so that the distance of the emitting lens 52 relative to the emitting element 20 along the first direction a can be adjusted, so that light spots of different sizes can be focused at different distances, and the clarity of the light spots can be adjusted.

[0047] In some embodiments, the adjustment structure 70 is slidably disposed on the module bracket 10 along the second direction b, the lens barrel 51 is connected to the transmission member 53, the adjustment structure 70 has a guide surface 7221, the transmission member 53 is in elastic contact with the guide surface 7221, and the adjustment structure 70 can be driven by an external force and move along the second direction b, so that the guide surface 7221 guides the transmission member 53 to reciprocate along the first direction a, and the first direction a and the second direction b are set at an angle. Specifically, a spring can be connected to the side of the transmission member 53 away from the guide surface 7221, and the spring is connected to the module bracket 10, so that the transmission member 53 maintains elastic contact with the guide surface 7221.

[0048] When the adjustment structure 70 is pushed to move along the second direction b, the transmission member 53 can move along the guide surface 7221, thereby driving the lens barrel 51 and the emitting lens 52 to move back and forth synchronously along the first direction a, thereby adjusting the position of the emitting lens 52. In the present application, it is only necessary to guide the movement of the lens barrel 51 through the guide surface 7221, thereby reducing the processing difficulty, improving the service life of the adjustment structure 70, and making the adjustment smoother and more stable.

[0049] In a possible embodiment, the guide surface 7221 is an inclined surface, and the inclined surface is inclined relative to the first direction a. Specifically, the first direction a may be perpendicular to the second direction b, and the inclined surface is inclined relative to both the first direction a and the second direction b.

[0050] Understandably, the inclined surface is provided with a first contact end away from the emitting element 20 and a second contact end close to the emitting element 20 along the first direction a. When the adjusting structure 70 is driven by an external force to move along the second direction b, the inclined surface also moves along the second direction b, and the inclined surface and the transmission member 53 always remain in contact. Therefore, the inclined surface can guide the transmission member 53 to reciprocate between the first contact end and the second contact end to drive the lens barrel 51 to synchronously reciprocate along the first direction a, thereby adjusting the position of the emitting lens 52 along the first direction a.

[0051] Specifically, when the adjusting structure 70 is driven by an external force to move forward along the second direction b, the transmission member 53 moves from the first contact end away from the emitting element 20 to the second contact end close to the emitting element 20; when the adjusting structure 70 is driven by an external force to move backward along the second direction b, the transmission member 53 moves from the second contact end close to the emitting element 20 to the first contact end away from the emitting element 20. Understandably, the inclined surface can be a flat surface or an arc surface. The present application does not uniquely limit the specific shape of the inclined surface, as long as the inclined surface is inclined relative to the first direction a.

[0052] In another possible embodiment, the guiding surface 7221 can be an arc surface in the shape of a parabola. The distance from a point on the arc surface to the surface of the adjusting structure 70 facing away from the emitting element 20 gradually increases from 0 along the second direction b, reaches the maximum value, and then gradually decreases to 0. Therefore, when the adjusting structure 70 is driven by an external force to move along the second direction b, the guiding surface 7221 also moves along the second direction b, and the guiding surface 7221 and the transmission member 53 always remain in elastic contact. Therefore, the transmission member 53 first gradually moves away from the surface of the adjusting structure 70 facing away from the emitting element 20, and after reaching the maximum distance from the surface of the adjusting structure 70 facing away from the emitting element 20, it gradually approaches the surface of the adjusting structure 70 facing away from the emitting element 20, thereby adjusting the position of the lens barrel 51 along the first direction a.

[0053] In addition, the transmission member 53 is connected to the outer peripheral wall of the main body portion. The transmission member 53 is a cylindrical structure, and the axis of the transmission member 53 is perpendicular to the first direction a and the second direction b. Since the transmission member 53 is a cylindrical structure, the friction between the transmission member 53 and the guiding surface 7221 can be reduced, preventing the movement of the lens barrel 51 from getting stuck, thereby improving the adjustment efficiency.

[0054] In some embodiments, as Figure 2 shown, the module bracket 10 has an installation cavity for accommodating the lens barrel 51 and allowing the lens barrel 51 to move. A sliding groove 11 communicating with the installation cavity is formed on the module bracket 10. The sliding groove 11 extends along the first direction a. The transmission member 53 passes through the sliding groove 11 and extends in a direction away from the installation cavity to contact the guiding surface 7221.

[0055] By providing the sliding groove 11, the transmission member 53 passes through the sliding groove 11 and is slidably connected to the sliding groove 11. Through the cooperation between the transmission member 53 and the sliding groove 11, the movement of the transmission member 53 can be guided, thereby guiding the movement of the lens barrel 51 along the first direction a, and thus ensuring the straightness of the movement of the lens barrel 51.

[0056] Further, sliding grooves 11 communicating with the installation cavity are provided on the left and right side walls of the module bracket 10. Correspondingly, transmission members 53 are provided on both sides of the main body portion, and the two transmission members 53 are respectively engaged with the two sliding grooves 11, thereby further enhancing the guiding effect on the movement of the lens barrel 51 and effectively preventing the lens barrel 51 from shifting during movement.

[0057] In some embodiments, the optical module further includes a receiving lens 60. The receiving lens 60 is disposed on the module bracket 10. The light 300 reflected by the object to be measured 200 is focused on the receiving element 30 after passing through the receiving lens 60. The receiving lens 60 can cause the light spots reflected from different positions of the object to be measured 200 within the measurement range to be focused on the receiving element 30.

[0058] In some embodiments, the adjusting structure 70 includes an adjusting plate 71, an adjusting block 72, and a rotating rod 73. The adjusting plate 71 is connected to the bracket. The rotating rod 73 is movably inserted through the adjusting plate 71. The rotating rod 73 extends along the second direction b and one end of the rotating rod 73 abuts against the adjusting block 72 to push the adjusting block 72 to move along the second direction b. A guiding surface 7221 is provided on the adjusting block 72. By providing the adjusting structure 70, only by screwing the rotating rod 73 can the adjusting block 72 be driven to move along the second direction b, thereby driving the lens barrel 51 to move along the first direction a. The adjusting method is simple, improving the convenience of adjustment.

[0059] In some embodiments, the adjusting block 72 includes a connecting portion 721 connected to the rotating rod 73 and two extending portions 722 connected to both sides of the connecting portion 721. The two extending portions 722 and the connecting portion 721 enclose a receiving space for receiving the lens barrel 51. The guiding surface 7221 is provided on the extending portion 722. Transmission members 53 are provided on both sides of the lens barrel 51, and the two extending portions 722 respectively abut against the two transmission members 53 on both sides of the lens barrel 51. By providing the connecting portion 721 and the two extending portions 722 connected to both sides of the connecting portion 721, and the two extending portions 722 respectively abut against the two transmission members 53 on both sides of the lens barrel 51, the lens barrel 51 can be kept balanced during movement, preventing the lens barrel 51 from shifting during movement, ensuring the straightness of the movement of the lens barrel 51. Moreover, the two extending portions 722 are connected to both sides of the connecting portion 721, and the connecting portion 721 is connected to the rotating rod 73. Therefore, only by adjusting the rotating rod 73 can the two extending portions 722 be synchronously driven to move, thereby simplifying the structure of the optical module and facilitating miniaturization.

[0060] The present application also provides a white light sensor, which includes an optical module. The specific structure of the optical module refers to the above embodiments. Since this white light sensor adopts all the technical solutions of the above embodiments, it also has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0061] In some embodiments, the white light sensor is provided with a light exit port and a light entry port that are spaced apart from each other and are arranged on the same side. The emitting element 20 emits light rays 300 through the light exit port towards the object to be measured 200, and the light rays 300 reflected by the object to be measured 200 are irradiated onto the receiving element 30 through the light entry port.

[0062] It should be noted that the distance between the light exit port and the light entry port is not limited and can be adjusted according to actual needs. The light exit port and the light entry port can be parallel to one side of the white light sensor. Understandably, the positional relationship between the light exit port and the light entry port can also adopt other forms, rather than being limited to the forms already mentioned in the above embodiments, as long as it can achieve the function of emitting and receiving light rays 300.

[0063] The light rays 300 can be emitted towards the object to be measured 200 through the light exit port, and the light rays 300 reflected by the object to be measured 200 can be irradiated onto the receiving element 30 through the light entry port. Understandably, the area of the light exit port can be smaller than the area of the light entry port, that is, the area of the light entry port can be larger. Therefore, when the incident angle of the light rays 300 changes greatly, the light rays 300 can still be irradiated onto the receiving element 30 through the light entry port.

[0064] In some embodiments, a first window mirror 81 is provided at the light exit port, and a second window mirror 82 is provided at the light entry port. The light rays 300 emitted by the emitting element 20 pass through the first window mirror 81 and are irradiated onto the object to be measured 200, and the light rays 300 reflected by the object to be measured 200 pass through the second window mirror 82 and are irradiated onto the receiving element 30.

[0065] The first window mirror 81 and the second window mirror 82 can allow the light rays 300 to pass through better. At the same time, the first window mirror 81 and the second window mirror 82 are arranged on the outer shell surface of the white light sensor, which can play a role in dust prevention and protection.

[0066] As Figure 7 shown, the optical module can be arranged inside the outer shell of the white light sensor, the light exit port and the light entry port are arranged on the outer shell of the white light sensor, and the rotating rod 73 of the optical module is exposed outside the outer shell of the white light sensor. Therefore, only by screwing the rotating rod 73 can the emitting lens 52 be adjusted, and the adjustment method is simple and fast.

[0067] In summary, for the optical module provided in this application, by arranging a reflection structure 40 on the light path 300 between the emitting element 20 and the object to be measured 200, the reflection structure 40 can deflect the light path 300 between the receiving element 30 and the object to be measured 200, thereby compressing the optical path between the emitting element 20 and the object to be measured 200, reducing the distance between the emitting element 20 and the object to be measured 200. The emitting element 20 can be arranged closer to the object to be measured 200, thus reducing the size of the optical module and further reducing the volume of the white light sensor.

[0068] The above are only optional embodiments of this application and are not intended to limit this application. For those skilled in the art, various changes and modifications can be made to this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.

Claims

1. An optical module for detecting an object to be measured (200), characterized in that: The optical module includes a module bracket (10), a transmitting element (20) for emitting light (300), a receiving element (30) disposed on the same side of the object to be measured (200) as the transmitting element (20), and a reflecting structure (40) for reflecting the light (300). The transmitting element (20), the receiving element (30), and the reflecting structure (40) are all disposed on the module bracket (10). The reflecting structure (40) is configured to reflect the light (300) emitted by the transmitting element (20) to the object to be measured (200), so as to reduce the distance between the transmitting element (20) and the object to be measured (200).

2. The optical module according to claim 1, wherein: The reflecting structure (40) includes a first reflecting mirror (41) and a second reflecting mirror (42). Both the first reflecting mirror (41) and the second reflecting mirror (42) are located between the transmitting element (20) and the object to be measured (200). The first reflecting mirror (41) is configured to reflect the light (300) emitted by the transmitting element (20) to the second reflecting mirror (42), and the second reflecting mirror (42) is configured to reflect the light (300) reflected by the first reflecting mirror (41) to the object to be measured (200).

3. The optical module according to claim 2, wherein: The first reflecting mirror (41) is closer to the object to be measured (200) than the second reflecting mirror (42). The reflecting surfaces of the first reflecting mirror (41) and the second reflecting mirror (42) are parallel to each other.

4. The optical module according to claim 2, wherein: The optical module further includes a transmitting lens (52). The light (300) reflected by the reflecting structure (40) is emitted through the transmitting lens (52). The transmitting lens (52) is configured to converge the divergent light beam emitted by the transmitting element (20) into a collimated light beam.

5. The optical module according to claim 4, characterized in that: The optical module further includes a lens barrel (51) for mounting the transmitting lens (52) and an adjusting structure (70) for adjusting the lens barrel (51). The lens barrel (51) is slidably disposed on the module bracket (10) in a first direction. The adjusting structure (70) is configured to drive the lens barrel (51) to reciprocate in the first direction.

6. The optical module according to claim 5, wherein: The adjusting structure (70) is slidably disposed on the module bracket (10) in a second direction. The lens barrel (51) is connected with a transmission member (53). The adjusting structure (70) has a guiding surface (7221). The transmission member (53) is in elastic contact with the guiding surface (7221). The adjusting structure (70) can be driven by an external force and move in the second direction, so that the guiding surface (7221) guides the transmission member (53) to reciprocate in the first direction. The first direction and the second direction are arranged at an angle.

7. The optical module according to claim 6, wherein: The module bracket (10) has an installation cavity for receiving the lens barrel (51) and allowing the lens barrel (51) to move. A sliding groove (11) communicating with the installation cavity is formed in the module bracket (10). The sliding groove (11) extends along the first direction. The transmission member (53) passes through the sliding groove (11) and extends in a direction away from the installation cavity to contact the guiding surface (7221).

8. The optical module according to claim 6, wherein: The guiding surface (7221) is an inclined surface, and the inclined surface is inclined relative to the first direction.

9. The optical module according to any one of claims 1 to 8, characterized in that: The optical module further includes a receiving lens (60). The receiving lens (60) is disposed on the module bracket (10). The light rays (300) reflected by the object to be measured (200) are focused on the receiving element (30) after passing through the receiving lens (60).

10. A white light sensor, characterized in that: The white light sensor includes the optical module according to any one of claims 1 to 9.

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