Rapid optical path changing device based on optical cam reflector

Abstract

The utility model relates to an optical path quick changing device based on an optical cam reflector, which comprises a lens rod and a cam reflector, the cam reflector is provided with a plurality of sector plates, the centers of circles of the sector plates are intersected into the same center point, the lens rod is arranged on one side of the cam reflector, and the lens rod and the center of circle of the cam reflector are arranged in a straight line. Light is emitted from the lens rod, the emergent direction of the center of the light is vertically incident to the sector plate, and the light is reflected by the arc surface on one side of the cam reflector and returns to the lens rod. Through the structure, the problem that the optical measurement speed based on the optical path change is limited due to the fact that the optical path change mode in the prior art is limited by the inertia effect of a mechanical structure, and rapid optical path change is difficult to achieve is solved.

Description

Technical Field

[0001] This utility model belongs to the field of optical path dynamic change technology, specifically relating to a device for rapidly changing the optical path based on an optical cam reflector. Background Technology

[0002] In recent years, with the deepening application of optical technology in the field of measurement, applications based on coherent optics have become increasingly common, such as length measurement, vibration measurement, and Fourier transform spectroscopy measurement. Measurement techniques applying coherent optics theory all require changing the optical path length of a portion of the optical path to alter the optical path difference of the measurement system. This allows the target information to be obtained based on the change in optical path difference and subsequent processing methods.

[0003] Currently, optical path length is typically changed by using a motor to drive a reflector, which reciprocates along a designated guide rail. However, existing methods of changing optical path length are limited by the inertia of the mechanical structure, making rapid changes difficult and thus restricting the speed of optical measurements based on optical path length variations. Utility Model Content

[0004] This invention provides a device for rapidly changing the optical path based on an optical cam reflector, which solves the problem that existing optical path changing methods are limited by the inertia of mechanical structures, making it difficult to achieve rapid optical path changes and thus restricting the speed of optical measurements based on optical path changes.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: The cam reflector has multiple fan-shaped plates, the centers of the multiple fan-shaped plates intersect at the same center point, and the lens rod is set on one side of the cam reflector. The lens rod and the center of the cam reflector are arranged in a straight line. Light is emitted from the lens rod, and the emission direction of the center of the light is perpendicular to the fan-shaped plate. The light is reflected by the arc surface on one side of the cam reflector and returns to the lens rod.

[0006] The beneficial effects of this invention are as follows: light emitted from the lens rod passes through the rotation center of the cam reflector, and the center of each arc segment on the cam reflector is also the rotation center. This theoretically ensures that the incident light is perpendicularly incident and reflected back to the lens rod. As the cam reflector rotates, the radius of the reflective surface from the rotation center changes in stages, thus causing a change in the optical path. Because this process involves rotation, it has unique advantages compared to the reciprocating motion of a linear motor, as it eliminates the need for deceleration and allows for rapid changes in the optical path.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the cam reflector (300) has multiple fan-shaped plates (310), the sides of the multiple fan-shaped plates (310) abut against each other, and the centers (330) of the multiple fan-shaped plates (310) converge to the same center point.

[0009] The beneficial effect of adopting the above-mentioned further scheme is that the light emitted from the lens rod passes through the rotation center of the cam reflector, and the center of each arc segment on the cam reflector is also the rotation center. This theoretically ensures that the incident light is perpendicularly incident and reflected back to the lens rod. As the cam reflector rotates, the radius of the reflective surface from the rotation center changes in stages, thereby causing a change in the optical path. Because this approach involves rotation, it has a unique advantage over the reciprocating motion of a linear motor, as it does not require a deceleration process and can achieve rapid changes in the optical path.

[0010] Furthermore, the multiple sector plates have the same radius, the same thickness, and the same central angle.

[0011] The beneficial effect of adopting the above-mentioned further scheme is that the light beam exits from the lens rod to one side of the cam reflector, and the exit direction of the center of the light is perpendicular to the fan-shaped plate. The light is reflected by the arc surface on one side of the cam reflector and returns to the lens rod.

[0012] Furthermore, the multiple sector plates have the same radius, different thicknesses, and different central angles.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that the light beam exits from the lens rod onto one side of the cam reflector, and the center of the light beam exits perpendicularly to the fan-shaped plate. The light is reflected by the arc surface on one side of the cam reflector and returns to the lens rod. This ensures that the incident and outgoing rays of the same beam are parallel.

[0014] Furthermore, the radii of the multiple sector plates are different, the thickness of the multiple sector plates is the same, and the central angle of the multiple sector plates is the same.

[0015] The beneficial effect of adopting the above-mentioned further scheme is that the radius of the reflective surface from the center of rotation will change in stages, thereby causing a change in the optical path. When the cam mirror rotates rapidly, different rotation angles will be formed, causing changes in the distance of light traveling to and from the cam mirror and the air optical path, resulting in a dynamic change in the total optical path. The fact that the centers of multiple sector plates with different radii are the same ensures that the light is always perpendicularly incident on the sector plates of the cam mirror.

[0016] Furthermore, the radii of the multiple sector plates are different, the thicknesses of the multiple sector plates are different, and the central angles of the multiple sector plates are different.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that the radius of the reflective surface from the center of rotation will change in stages, thereby causing a change in the optical path. When the cam mirror rotates rapidly, different rotation angles will be formed, causing changes in the distance of light traveling to and from the cam mirror and the air optical path, resulting in a dynamic change in the total optical path. The fact that the centers of multiple sector plates with different radii are the same ensures that the light is always perpendicularly incident on the sector plates of the cam mirror.

[0018] Furthermore, the radii of the multiple sector plates are different, the thicknesses of the multiple sector plates are different, and the central angles of the multiple sector plates are the same.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that the radius of the reflective surface from the center of rotation will change in stages, thereby causing a change in the optical path. When the cam mirror rotates rapidly, different rotation angles will be formed, causing changes in the distance of light traveling to and from the cam mirror and the air optical path, resulting in a dynamic change in the total optical path. The fact that the centers of multiple sector plates with different radii are the same ensures that the light is always perpendicularly incident on the sector plates of the cam mirror.

[0020] Furthermore, the cam-shaped reflector rotates around the same center of multiple sector plates.

[0021] The beneficial effect of adopting the above-mentioned further scheme is that the centers of multiple sector plates are the same, which can ensure that the light is always incident perpendicularly on the sector plates of the cam reflector. This ensures the parallelism of the incident and reflected light. Because the reflector is designed to be perpendicular to the light rays, and the light emitted from the lens rod is designed to pass through the rotation center of the cam reflector, with the centers of each sector plate on the lens being the rotation center, theoretically, the incident light is guaranteed to be incident perpendicularly onto the lens.

[0022] Furthermore, a counterweight wheel is provided above or below the cam reflector, and the axis of the counterweight wheel and the axis of the cam reflector are synchronously rotating.

[0023] The beneficial effect of adopting the above-mentioned further solution is that, in order to reduce the vibration of the cam reflector caused by eccentricity during rotation, a counterweight wheel is connected below or above the cam reflector. The axis of the counterweight wheel and the axis of the cam reflector are synchronously rotating axes. The synchronously rotating axis can generate a reverse vibration force, thereby reducing the vibration of the cam reflector.

[0024] Furthermore, the center of rotation of the cam reflector is aligned with the center of the counterweight wheel.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the center of the counterweight wheel is installed vertically with the rotation center of the cam reflector as the axis, so that the axis of the counterweight wheel and the axis of the cam reflector are synchronous rotation axes, which can generate reverse vibration force, thereby reducing the vibration of the cam reflector. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a device for rapidly changing the optical path based on an optical cam reflector according to the present invention.

[0027] Figure 2 This is a top view of a device for rapidly changing the optical path based on an optical cam reflector according to the present invention.

[0028] The components represented by each number in the attached diagram are listed below: 100-lens rod; 300-cam reflector; 310-fan plate; 330-center; 500-counterweight wheel. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] Example 1

[0031] like Figure 1-2 As shown, the cam reflector 300 has multiple fan-shaped plates 310, and the centers 330 of the multiple fan-shaped plates 310 converge to the same center point. The lens rod 100 is disposed on one side of the cam reflector 300, and the lens rod 100 and the center 330 of the cam reflector 300 are arranged in a straight line. Light is emitted from the lens rod 100, and the emission direction of the center of the light is perpendicular to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0032] Specifically, since the cam reflector 300 can rotate rapidly, at different rotation angles, the light emitted from the lens rod 100 passes through the rotation center of the cam reflector 300, and the centers of each arc segment on the cam reflector 300 are also rotation centers. This theoretically ensures that the incident light is perpendicularly incident and reflected back to the lens rod 100. As the cam reflector 300 rotates, the radius of the reflective surface from the rotation center changes in stages, causing a change in the optical path and resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path. In this embodiment, the cam reflector 300 can be manufactured as a single-piece transparent mirror, and the surface of the cam reflector 300 is processed into multiple fan shapes, with the outer circumference of the fan shape designed as a reflective surface. In this embodiment, the lens rod 100 is a self-focusing lens rod 100. Alternatively, the lens rod 100 can be replaced with other optical elements that have the same effect as the self-focusing lens rod 100.

[0033] like Figure 1-2 As shown, the multiple sector plates 310 have the same radius, the same thickness, and the same central angle.

[0034] Specifically, the light beam exits from the lens rod 100 and is emitted to one side of the cam reflector 300, with the center of the light beam emitted perpendicularly to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0035] like Figure 1-2 As shown, the cam reflector 300 rotates around the same center 330 of the multiple sector plates 310.

[0036] Specifically, the centers 330 of the multiple sector plates 310 are the same. When the cam reflector 300 rotates, the light beam exits from the lens rod 100 onto one side of the cam reflector 300, and the center of the light beam exits perpendicularly to the sector plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the light always enters perpendicularly onto the sector plate 310 of the cam reflector 300. Parallelism of the incident and reflected light is ensured because the reflector is designed perpendicular to the light rays. The light emitted from the lens rod 100 rotates with the center of each sector plate 310 of the cam reflector 300 as its center, theoretically guaranteeing that the incident light enters the lens perpendicularly.

[0037] like Figure 1-2 As shown, a counterweight wheel 500 is also provided above or below the cam reflector 300. The axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating.

[0038] Specifically, the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronous rotating axes. When the counterweight wheel 500 and the cam reflector 300 rotate synchronously, the synchronous rotating axis can generate a reverse vibration force, thereby reducing the vibration of the cam reflector 300 caused by eccentricity during rotation.

[0039] like Figure 1-2 As shown, the rotation center 330 of the cam reflector 300 is aligned with the center of the counterweight wheel 500.

[0040] Specifically, the center of the counterweight wheel 500 is vertically mounted with the rotation center 330 of the cam reflector 300 as the axis, so that the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating axes, which can generate reverse vibration force, thereby reducing the vibration of the cam reflector 300.

[0041] The beneficial effects of this embodiment are as follows: the light beam exits from the lens rod 100 and is projected onto one side of the cam reflector 300, with the center of the light beam perpendicularly incident on the fan-shaped plate 310. The light is reflected by the arcuate surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the incident and outgoing rays of the same beam are parallel. When the cam reflector 300 rotates rapidly, the radius of the reflective surface from the center of rotation changes in stages, causing a change in the optical path. This results in different rotation angles, causing changes in the distance the light travels to and from the cam reflector 300 and the air optical path, resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path.

[0042] The working process of this embodiment is as follows: the light beam is emitted from the lens rod 100 to one side of the cam reflector 300, and the emission direction of the center of the light is perpendicular to the fan plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0043] Example 2

[0044] like Figure 1-2 As shown, the cam reflector (300) has multiple fan-shaped plates (310), the sides of the multiple fan-shaped plates (310) abut against each other, and the centers (330) of the multiple fan-shaped plates (310) converge at the same center point.

[0045] Specifically, since the cam reflector 300 can rotate rapidly, at different rotation angles, the light emitted from the lens rod 100 passes through the rotation center of the cam reflector 300, and the centers of each arc segment on the cam reflector 300 are also rotation centers. This theoretically ensures that the incident light is perpendicularly incident and reflected back to the lens rod 100. As the cam reflector 300 rotates, the radius of the reflective surface from the rotation center changes in stages, causing a change in the optical path and resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path. In this embodiment, the cam reflector 300 can be composed of multiple fan-shaped plates 310 spliced ​​together, with the outer circumference of the fan-shaped plates designed as a reflective surface. In this embodiment, the lens rod 100 is a self-focusing lens rod 100; alternatively, the lens rod 100 can be replaced with other optical elements that have the same effect as the self-focusing lens rod 100.

[0046] The beneficial effects of this embodiment are as follows: the light beam exits from the lens rod 100 and is projected onto one side of the cam reflector 300, with the center of the light beam perpendicularly incident on the fan-shaped plate 310. The light is reflected by the arcuate surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the incident and outgoing rays of the same beam are parallel. When the cam reflector 300 rotates rapidly, the radius of the reflective surface from the center of rotation changes in stages, causing a change in the optical path. This results in different rotation angles, causing changes in the distance the light travels to and from the cam reflector 300 and the air optical path, resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path.

[0047] The working process of this embodiment is as follows: the light beam is emitted from the lens rod 100 to one side of the cam reflector 300, and the emission direction of the center of the light is perpendicular to the fan plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0048] Example 3

[0049] like Figure 1-2 As shown, the cam reflector 300 has multiple fan-shaped plates 310, and the centers 330 of the multiple fan-shaped plates 310 converge to the same center point. The lens rod 100 is disposed on one side of the cam reflector 300, and the lens rod 100 and the center 330 of the cam reflector 300 are arranged in a straight line. Light is emitted from the lens rod 100, and the emission direction of the center of the light is perpendicular to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0050] Specifically, since the cam reflector 300 can rotate rapidly, at different rotation angles, the light emitted from the lens rod 100 passes through the rotation center of the cam reflector 300, and the center of each arc segment on the cam reflector 300 is also the rotation center. This theoretically ensures that the incident light is perpendicularly incident and reflected back to the lens rod 100. As the cam reflector 300 rotates, the radius of the reflective surface from the rotation center changes in stages, causing a change in the optical path and resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path. In this embodiment, the cam reflector 300 can be manufactured as a single-piece transparent mirror, with its surface processed into multiple fan shapes. Alternatively, it can be composed of multiple fan-shaped plates spliced ​​together, with the outer circumference of the fan shape designed as a reflective surface. In this embodiment, the lens rod 100 is a self-focusing lens rod 100. Alternatively, the lens rod 100 can be replaced with other optical elements that have the same effect as the self-focusing lens rod 100.

[0051] like Figure 1-2As shown, the multiple sector plates 310 have the same radius, different thicknesses, and different central angles.

[0052] Specifically, the light beam exits from the lens rod 100 and is emitted to one side of the cam reflector 300, with the center of the light beam emitted perpendicularly to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0053] like Figure 1-2 As shown, the cam reflector 300 rotates around the same center 330 of the multiple sector plates 310.

[0054] Specifically, the centers 330 of the multiple sector plates 310 are the same. When the cam reflector 300 rotates, the light beam exits from the lens rod 100 onto one side of the cam reflector 300, and the center of the light beam exits perpendicularly to the sector plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the light always enters perpendicularly onto the sector plate 310 of the cam reflector 300. Parallelism of the incident and reflected light is ensured because the reflector is designed perpendicular to the light rays. The light emitted from the lens rod 100 rotates with the center of each sector plate 310 of the cam reflector 300 as its center, theoretically guaranteeing that the incident light enters the lens perpendicularly.

[0055] like Figure 1-2 As shown, a counterweight wheel 500 is also provided above or below the cam reflector 300. The axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating.

[0056] Specifically, the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronous rotating axes. When the counterweight wheel 500 and the cam reflector 300 rotate synchronously, the synchronous rotating axis can generate a reverse vibration force, thereby reducing the vibration of the cam reflector 300 caused by eccentricity during rotation.

[0057] like Figure 1-2 As shown, the rotation center 330 of the cam reflector 300 is aligned with the center of the counterweight wheel 500.

[0058] Specifically, the center of the counterweight wheel 500 is vertically mounted with the rotation center 330 of the cam reflector 300 as the axis, so that the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating axes, which can generate reverse vibration force, thereby reducing the vibration of the cam reflector 300.

[0059] The beneficial effects of this embodiment are as follows: the light beam exits from the lens rod 100 and is projected onto one side of the cam reflector 300, with the center of the light beam perpendicularly incident on the fan-shaped plate 310. The light is reflected by the arcuate surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the incident and outgoing rays of the same beam are parallel. When the cam reflector 300 rotates rapidly, the radius of the reflective surface from the center of rotation changes in stages, causing a change in the optical path. This results in different rotation angles, causing changes in the distance the light travels to and from the cam reflector 300 and the air optical path, resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path.

[0060] The working process of this embodiment is as follows: the light beam is emitted from the lens rod 100 to one side of the cam reflector 300, and the emission direction of the center of the light is perpendicular to the fan plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0061] Example 4

[0062] like Figure 1-2 As shown, the cam reflector 300 has multiple fan-shaped plates 310, and the centers 330 of the multiple fan-shaped plates 310 converge to the same center point. The lens rod 100 is disposed on one side of the cam reflector 300, and the lens rod 100 and the center 330 of the cam reflector 300 are arranged in a straight line. Light is emitted from the lens rod 100, and the emission direction of the center of the light is perpendicular to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0063] Specifically, since the cam reflector 300 can rotate rapidly, at different rotation angles, the light emitted from the lens rod 100 passes through the rotation center of the cam reflector 300, and the center of each arc segment on the cam reflector 300 is also the rotation center. This theoretically ensures that the incident light is perpendicularly incident and reflected back to the lens rod 100. As the cam reflector 300 rotates, the radius of the reflective surface from the rotation center changes in stages, causing a change in the optical path and resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path. In this embodiment, the cam reflector 300 can be manufactured as a single-piece transparent mirror, with its surface processed into multiple fan shapes. Alternatively, it can be composed of multiple fan-shaped plates spliced ​​together, with the outer circumference of the fan shape designed as a reflective surface. In this embodiment, the lens rod 100 is a self-focusing lens rod 100. Alternatively, the lens rod 100 can be replaced with other optical elements that have the same effect as the self-focusing lens rod 100.

[0064] like Figure 1-2As shown, the radii of the multiple sector plates 310 are different, the thickness of the multiple sector plates 310 is the same, and the central angle of the multiple sector plates 310 is the same.

[0065] Specifically, the light beam exits from the lens rod 100 and is emitted to one side of the cam reflector 300, with the center of the light beam emitted perpendicularly to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0066] like Figure 1-2 As shown, the cam reflector 300 rotates around the same center 330 of the multiple sector plates 310.

[0067] Specifically, the centers 330 of the multiple sector plates 310 are the same. When the cam reflector 300 rotates, the light beam exits from the lens rod 100 onto one side of the cam reflector 300, and the center of the light beam exits perpendicularly to the sector plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the light always enters perpendicularly onto the sector plate 310 of the cam reflector 300. Parallelism of the incident and reflected light is ensured because the reflector is designed perpendicular to the light rays. The light emitted from the lens rod 100 rotates with the center of each sector plate 310 of the cam reflector 300 as its center, theoretically guaranteeing that the incident light enters the lens perpendicularly.

[0068] like Figure 1-2 As shown, a counterweight wheel 500 is also provided above or below the cam reflector 300. The axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating.

[0069] Specifically, the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronous rotating axes. When the counterweight wheel 500 and the cam reflector 300 rotate synchronously, the synchronous rotating axis can generate a reverse vibration force, thereby reducing the vibration of the cam reflector 300 caused by eccentricity during rotation.

[0070] like Figure 1-2 As shown, the rotation center 330 of the cam reflector 300 is aligned with the center of the counterweight wheel 500.

[0071] Specifically, the center of the counterweight wheel 500 is vertically mounted with the rotation center 330 of the cam reflector 300 as the axis, so that the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating axes, which can generate reverse vibration force, thereby reducing the vibration of the cam reflector 300.

[0072] The beneficial effects of this embodiment are as follows: the light beam exits from the lens rod 100 and is projected onto one side of the cam reflector 300, with the center of the light beam perpendicularly incident on the fan-shaped plate 310. The light is reflected by the arcuate surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the incident and outgoing rays of the same beam are parallel. When the cam reflector 300 rotates rapidly, the radius of the reflective surface from the center of rotation changes in stages, causing a change in the optical path. This results in different rotation angles, causing changes in the distance the light travels to and from the cam reflector 300 and the air optical path, resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path.

[0073] The working process of this embodiment is as follows: the light beam is emitted from the lens rod 100 to one side of the cam reflector 300, and the emission direction of the center of the light is perpendicular to the fan plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0074] Example 5

[0075] like Figure 1-2 As shown, the cam reflector 300 has multiple fan-shaped plates 310, and the centers 330 of the multiple fan-shaped plates 310 converge to the same center point. The lens rod 100 is disposed on one side of the cam reflector 300, and the lens rod 100 and the center 330 of the cam reflector 300 are arranged in a straight line. Light is emitted from the lens rod 100, and the emission direction of the center of the light is perpendicular to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0076] Specifically, since the cam reflector 300 can rotate rapidly, at different rotation angles, the light emitted from the lens rod 100 passes through the rotation center of the cam reflector 300, and the center of each arc segment on the cam reflector 300 is also the rotation center. This theoretically ensures that the incident light is perpendicularly incident and reflected back to the lens rod 100. As the cam reflector 300 rotates, the radius of the reflective surface from the rotation center changes in stages, causing a change in the optical path and resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path. In this embodiment, the cam reflector 300 can be manufactured as a single-piece transparent mirror, with its surface processed into multiple fan shapes. Alternatively, it can be composed of multiple fan-shaped plates spliced ​​together, with the outer circumference of the fan shape designed as a reflective surface. In this embodiment, the lens rod 100 is a self-focusing lens rod 100. Alternatively, the lens rod 100 can be replaced with other optical elements that have the same effect as the self-focusing lens rod 100.

[0077] like Figure 1-2As shown, the radii of the multiple sector plates 310 are different, the thicknesses of the multiple sector plates 310 are different, and the central angles of the multiple sector plates 310 are different.

[0078] Specifically, the light beam exits from the lens rod 100 and is emitted to one side of the cam reflector 300, with the center of the light beam emitted perpendicularly to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0079] like Figure 1-2 As shown, the cam reflector 300 rotates around the same center 330 of the multiple sector plates 310.

[0080] Specifically, the centers 330 of the multiple sector plates 310 are the same. When the cam reflector 300 rotates, the light beam exits from the lens rod 100 onto one side of the cam reflector 300, and the center of the light beam exits perpendicularly to the sector plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the light always enters perpendicularly onto the sector plate 310 of the cam reflector 300. Parallelism of the incident and reflected light is ensured because the reflector is designed perpendicular to the light rays. The light emitted from the lens rod 100 rotates with the center of each sector plate 310 of the cam reflector 300 as its center, theoretically guaranteeing that the incident light enters the lens perpendicularly.

[0081] like Figure 1-2 As shown, a counterweight wheel 500 is also provided above or below the cam reflector 300. The axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating.

[0082] Specifically, the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronous rotating axes. When the counterweight wheel 500 and the cam reflector 300 rotate synchronously, the synchronous rotating axis can generate a reverse vibration force, thereby reducing the vibration of the cam reflector 300 caused by eccentricity during rotation.

[0083] like Figure 1-2 As shown, the rotation center 330 of the cam reflector 300 is aligned with the center of the counterweight wheel 500.

[0084] Specifically, the center of the counterweight wheel 500 is vertically mounted with the rotation center 330 of the cam reflector 300 as the axis, so that the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating axes, which can generate reverse vibration force, thereby reducing the vibration of the cam reflector 300.

[0085] The beneficial effects of this embodiment are as follows: the light beam exits from the lens rod 100 and is projected onto one side of the cam reflector 300, with the center of the light beam perpendicularly incident on the fan-shaped plate 310. The light is reflected by the arcuate surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the incident and outgoing rays of the same beam are parallel. When the cam reflector 300 rotates rapidly, the radius of the reflective surface from the center of rotation changes in stages, causing a change in the optical path. This results in different rotation angles, causing changes in the distance the light travels to and from the cam reflector 300 and the air optical path, resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path.

[0086] The working process of this embodiment is as follows: the light beam is emitted from the lens rod 100 to one side of the cam reflector 300, and the emission direction of the center of the light is perpendicular to the fan plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0087] Example 6

[0088] like Figure 1-2 As shown, the cam reflector 300 has multiple fan-shaped plates 310, and the centers 330 of the multiple fan-shaped plates 310 converge to the same center point. The lens rod 100 is disposed on one side of the cam reflector 300, and the lens rod 100 and the center 330 of the cam reflector 300 are arranged in a straight line. Light is emitted from the lens rod 100, and the emission direction of the center of the light is perpendicular to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0089] Specifically, since the cam reflector 300 can rotate rapidly, at different rotation angles, the light emitted from the lens rod 100 passes through the rotation center of the cam reflector 300, and the center of each arc segment on the cam reflector 300 is also the rotation center. This theoretically ensures that the incident light is perpendicularly incident and reflected back to the lens rod 100. As the cam reflector 300 rotates, the radius of the reflective surface from the rotation center changes in stages, causing a change in the optical path and resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path. In this embodiment, the cam reflector 300 can be manufactured as a single-piece transparent mirror, with its surface processed into multiple fan shapes. Alternatively, it can be composed of multiple fan-shaped plates spliced ​​together, with the outer circumference of the fan shape designed as a reflective surface. In this embodiment, the lens rod 100 is a self-focusing lens rod 100. Alternatively, the lens rod 100 can be replaced with other optical elements that have the same effect as the self-focusing lens rod 100.

[0090] like Figure 1-2As shown, the radii of the multiple sector plates 310 are different, the thicknesses of the multiple sector plates 310 are different, and the central angles of the multiple sector plates 310 are the same.

[0091] Specifically, the light beam exits from the lens rod 100 and is emitted to one side of the cam reflector 300, with the center of the light beam emitted perpendicularly to the fan-shaped plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0092] like Figure 1-2 As shown, the cam reflector 300 rotates around the same center 330 of the multiple sector plates 310.

[0093] Specifically, the centers 330 of the multiple sector plates 310 are the same. When the cam reflector 300 rotates, the light beam exits from the lens rod 100 onto one side of the cam reflector 300, and the center of the light beam exits perpendicularly to the sector plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the light always enters perpendicularly onto the sector plate 310 of the cam reflector 300. Parallelism of the incident and reflected light is ensured because the reflector is designed perpendicular to the light rays. The light emitted from the lens rod 100 rotates with the center of each sector plate 310 of the cam reflector 300 as its center, theoretically guaranteeing that the incident light enters the lens perpendicularly.

[0094] like Figure 1-2 As shown, a counterweight wheel 500 is also provided above or below the cam reflector 300. The axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating.

[0095] Specifically, the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronous rotating axes. When the counterweight wheel 500 and the cam reflector 300 rotate synchronously, the synchronous rotating axis can generate a reverse vibration force, thereby reducing the vibration of the cam reflector 300 caused by eccentricity during rotation.

[0096] like Figure 1-2 The rotation center 330 of the cam reflector 300 shown is aligned with the center of the counterweight wheel 500.

[0097] Specifically, the center of the counterweight wheel 500 is vertically mounted with the rotation center 330 of the cam reflector 300 as the axis, so that the axis of the counterweight wheel 500 and the axis of the cam reflector 300 are synchronously rotating axes, which can generate reverse vibration force, thereby reducing the vibration of the cam reflector 300.

[0098] The beneficial effects of this embodiment are as follows: the light beam exits from the lens rod 100 and is projected onto one side of the cam reflector 300, with the center of the light beam perpendicularly incident on the fan-shaped plate 310. The light is reflected by the arcuate surface on one side of the cam reflector 300 and returns to the lens rod 100. This ensures that the incident and outgoing rays of the same beam are parallel. When the cam reflector 300 rotates rapidly, the radius of the reflective surface from the center of rotation changes in stages, causing a change in the optical path. This results in different rotation angles, causing changes in the distance the light travels to and from the cam reflector 300 and the air optical path, resulting in a dynamic change in the total optical path. Therefore, this method can achieve rapid changes in the optical path.

[0099] The working process of this embodiment is as follows: the light beam is emitted from the lens rod 100 to one side of the cam reflector 300, and the emission direction of the center of the light is perpendicular to the fan plate 310. The light is reflected by the arc surface on one side of the cam reflector 300 and returns to the lens rod 100.

[0100] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0101] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0102] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0103] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0104] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0105] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for rapidly changing the optical path length based on an optical cam reflector, characterized in that, The system includes a lens rod (100) and a cam reflector (300). The cam reflector (300) has multiple fan-shaped plates (310), and the centers (330) of the multiple fan-shaped plates (310) converge at the same center point. The lens rod (100) is disposed on one side of the cam reflector (300), and the lens rod (100) and the center (330) of the cam reflector (300) are arranged in a straight line. Light is emitted from the lens rod (100), and the emission direction of the center of the light is perpendicular to the fan-shaped plate (310). The light is reflected by the arc surface on one side of the cam reflector (300) and returns to the lens rod (100).

2. The optical path length rapidly changing device based on an optical cam reflector according to claim 1, characterized in that, The cam reflector (300) has multiple fan-shaped plates (310), the sides of the multiple fan-shaped plates (310) abut against each other, and the centers (330) of the multiple fan-shaped plates (310) converge to the same center point.

3. The optical path length rapidly changing device based on an optical cam reflector according to claim 1, characterized in that, The multiple sector plates (310) have the same radius, the multiple sector plates (310) have the same thickness, and the multiple sector plates (310) have the same central angle.

4. The optical path length rapidly changing device based on an optical cam reflector according to claim 1, characterized in that, The multiple sector plates (310) have the same radius, the multiple sector plates (310) have different thicknesses, and the multiple sector plates (310) have different central angles.

5. The optical path length rapidly changing device based on an optical cam reflector according to claim 1, characterized in that, The radii of the multiple sector plates (310) are different, the thickness of the multiple sector plates (310) is the same, and the central angle of the multiple sector plates (310) is the same.

6. The optical path length rapidly changing device based on an optical cam reflector according to claim 1, characterized in that, The radii of the multiple sector plates (310) are different, the thicknesses of the multiple sector plates (310) are different, and the central angles of the multiple sector plates (310) are different.

7. The optical path length rapidly changing device based on an optical cam reflector according to claim 1, characterized in that, The radii of the multiple sector plates (310) are different, the thicknesses of the multiple sector plates (310) are different, and the central angles of the multiple sector plates (310) are the same.

8. The optical path length rapidly changing device based on an optical cam reflector according to claim 1, characterized in that, The cam reflector (300) rotates around the same center (330) of the plurality of fan-shaped plates (310).

9. The optical path length rapidly changing device based on an optical cam reflector according to claim 1, characterized in that, A counterweight wheel (500) is also provided above or below the cam reflector (300). The axis of the counterweight wheel (500) and the axis of the cam reflector (300) are synchronously rotating axes. The counterweight wheel (500) and the cam reflector (300) rotate synchronously.

10. The optical path length rapidly changing device based on an optical cam reflector according to claim 9, characterized in that, The center of rotation (330) of the cam reflector (300) is aligned with the center of the counterweight wheel (500).

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