Optical testing system with adjustable focal length

Abstract

This application discloses an adjustable focal length optical testing system, which includes a stator core, a lens, a movable component, a light-emitting chip, and a rotor push rod. During operation, the stator core serves as a fixed reference, and the lens is fixed to the stator core. The rotor push rod is threadedly connected to the stator core, with its end abutting against the movable component. The light-emitting chip is mounted on the movable component. When the rotor push rod is rotated, the threaded connection drives the rotor push rod to feed axially, thereby pushing the movable component to move relative to the stator core. This causes the movable component to move the light-emitting chip closer to or away from the lens, precisely changing the relative distance between the light-emitting chip and the lens. This achieves continuous adjustment of the focal length of the optical testing system, adapting to optical testing scenarios with different focal length requirements.

Description

Technical Field

[0001] This application relates to the field of optical testing technology, and more particularly to an optical testing system with adjustable focal length. Background Technology

[0002] Currently, commonly used optical testing systems are all fixed-focal-length, meaning the distance between the light-emitting chip or light-receiving chip and the lens is fixed. This limitation is inherent in optical testing where the focal length is uncertain. Since the focal length of an optical system is uncertain, it is necessary to find a suitable focal length through testing to achieve the desired optical effect. Therefore, there is an urgent need for an optical testing system with adjustable focal length. Summary of the Invention

[0003] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This part of the invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, embodiments of this application propose an optical testing system with adjustable focal length, comprising: A stator core and a lens, wherein the lens is disposed on the stator core; A movable component and a light-emitting chip, wherein the light-emitting chip is disposed on the movable component; The rotor push rod is threaded to the stator inner core and abuts against the movable component. The rotor push rod is used to move the movable component closer to or away from the lens.

[0006] In one feasible implementation, the stator core includes: A fixed plate and a connecting column are provided, the connecting column being connected to the fixed plate, the rotor push rod being threadedly connected to the connecting column, and the lens being disposed on the fixed plate.

[0007] In one possible implementation, a through groove is formed on the connecting post, through which the movable part passes.

[0008] In one feasible implementation, the movable component includes: A tray and a circuit board, wherein the circuit board is connected to the tray and the light-emitting chip is disposed on the circuit board.

[0009] In one feasible implementation, the tray is provided with a first protrusion, and the circuit board is positioned on the tray via the first protrusion.

[0010] In one feasible implementation, the adjustable focal length optical testing system further includes: The second protrusion is connected to the stator inner core and is arranged towards the moving part; An elastic element is sleeved on the first protrusion and the second protrusion.

[0011] In one feasible implementation, there are two of each of the first protrusion, the second protrusion, and the elastic element, arranged in two groups on both sides of the stator core and the moving part, respectively.

[0012] In one feasible implementation, the support plate has a slot formed on the side facing the rotor push rod, the rotor push rod includes a housing and a top member, the housing is threaded to the stator inner core, and one end of the top member is used to insert into the slot.

[0013] In one feasible implementation, the lens is bonded to the stator core, the stator core has a flared portion, and the output end of the lens is oriented toward the flared portion.

[0014] In one feasible implementation, the adjustable focal length optical testing system further includes: A limiting member is disposed on the movable component and / or the stator inner core to limit the distance between the movable component and the stator inner core.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: This application provides an adjustable focal length optical testing system, which includes a stator core, a lens, a movable component, a light-emitting chip, and a rotor push rod. During operation, the stator core serves as a fixed reference, and the lens is fixed to the stator core. The rotor push rod is threadedly connected to the stator core, with its end abutting against the movable component. The light-emitting chip is mounted on the movable component. Rotating the rotor push rod drives it axially, which in turn moves the movable component relative to the stator core. This causes the movable component to move the light-emitting chip closer to or further from the lens, precisely changing the relative distance between the light-emitting chip and the lens. This allows for continuous adjustment of the optical testing system's focal length, adapting to optical testing scenarios with varying focal length requirements.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic structural diagram of an adjustable focal length optical testing system according to an embodiment of this application; Figure 2 A schematic structural diagram of the exploded state of an adjustable focal length optical testing system according to an embodiment of this application; Figure 3 A schematic cross-sectional structural diagram of an adjustable focal length optical testing system according to an embodiment of this application; Figure 4 A schematic structural diagram illustrating the connection between the rotor push rod and the moving parts of an adjustable focal length optical testing system according to an embodiment of this application; Figure 5 A schematic structural diagram of an adjustable focal length optical testing system according to an embodiment of this application from another angle; Figure 6 A schematic structural diagram of the stator core of an adjustable focal length optical testing system according to an embodiment of this application.

[0018] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows: 110 Stator inner core, 120 Lens, 130 Moving parts, 140 Light-emitting chip, 150 Rotor push rod, 160 Elastic component; 111 Fixing plate, 112 Connecting post, 113 Through groove, 114 Second protruding post, 115 Flared part; 131 Support plate, 132 Circuit board, 133 First protrusion, 134 Slot; 151. Shell, 152. Top component. Detailed Implementation

[0019] The following description provides numerous specific details to offer a more thorough understanding of the technical solutions provided by this invention. However, it will be apparent to those skilled in the art that the technical solutions provided by this invention can be implemented without one or more of these details.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0021] Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0022] like Figures 1 to 6 As shown in the embodiment of this application, an adjustable focal length optical testing system is proposed, including: a stator core 110 and a lens 120, the lens 120 being disposed on the stator core 110; a movable component 130 and a light-emitting chip 140, the light-emitting chip 140 being disposed on the movable component 130; and a rotor push rod 150, the rotor push rod 150 being threadedly connected to the stator core 110 and abutting against the movable component 130, the rotor push rod 150 being used to drive the movable component 130 closer to or further away from the lens 120.

[0023] This application provides an adjustable focal length optical testing system, which includes a stator core 110, a lens 120, a movable component 130, a light-emitting chip 140, and a rotor push rod 150. When the adjustable focal length optical testing system is in operation, the stator core 110 serves as a fixed reference, and the lens 120 is fixedly mounted on the stator core 110. The rotor push rod 150 is threadedly connected to the stator core 110, and its end abuts against the movable component 130. The light-emitting chip 140 is mounted on the movable component 130. When the rotor push rod 150 is rotated, the threaded pair drives the rotor push rod 150 to feed axially, thereby pushing the movable component 130 to move relative to the stator core 110. This causes the movable component 130 to move the light-emitting chip 140 closer to or further away from the lens 120, precisely changing the relative distance between the light-emitting chip 140 and the lens 120, thus achieving continuous adjustment of the focal length of the optical testing system to adapt to optical testing scenarios with different focal length requirements.

[0024] This application provides an adjustable focal length optical testing system. Through the cooperation of the stator core 110, lens 120, movable component 130, light-emitting chip 140, and rotor push rod 150, it effectively solves the defect of non-adjustable focal length in traditional fixed focal length optical testing systems. The threaded connection between the rotor push rod 150 and the stator core 110 ensures high precision and stability of focal length adjustment, avoiding displacement deviation. The movable component 130 drives the light-emitting chip 140 to move smoothly, flexibly matching optical testing needs with uncertain focal lengths, improving testing adaptability and versatility. The structure is simple and compact, the adjustment operation is convenient, and continuous focal length adjustment can be achieved without complex components, reducing testing costs and improving optical testing efficiency.

[0025] like Figure 6 As shown, in one feasible embodiment, the stator inner core 110 includes: a fixed plate 111 and a connecting post 112, the connecting post 112 being connected to the fixed plate 111, the rotor push rod 150 being threadedly connected to the connecting post 112, and the lens 120 being disposed on the fixed plate 111.

[0026] This technical solution further provides the structural composition of the stator inner core 110, which includes a fixing plate 111 and a connecting post 112. The fixing plate 111 provides a stable mounting reference for the lens 120, ensuring accurate mounting position and uniform force distribution of the lens 120, and maintaining the stability of the optical axis. The connecting post 112 is reliably connected to the fixing plate 111, serving as the threaded engagement carrier for the rotor push rod 150, enabling the rotor push rod 150 to be stably screwed onto the stator inner core 110, ensuring smooth threaded transmission without wobbling. This integrated connection structure has high overall rigidity, avoiding assembly gaps and deformation problems associated with split structures, ensuring stable transmission and accurate displacement during focus adjustment, and effectively improving the structural stability and adjustment reliability of the optical testing system.

[0027] like Figure 6 As shown, in one feasible embodiment, a through groove 113 is formed on the connecting post 112, through which the movable part 130 passes.

[0028] In this technical solution, the connecting post 112 has a through slot 113, allowing the movable component 130 to pass through the slot 113 for axial through-type arrangement. This through slot 113 guides and limits the movement of the movable component 130, ensuring smooth movement along the axis of the stator inner core 110 and preventing offset or jamming. The through slot 113 simplifies the spatial layout, allowing for a compact fit between the movable component 130 and the stator inner core 110, reducing the overall system volume and facilitating miniaturization and integration. Simultaneously, the through slot 113 restricts the radial displacement of the movable component 130, maintaining the coaxiality of the light-emitting chip 140 and the lens 120, ensuring optical path stability, and improving focus adjustment accuracy and optical testing consistency.

[0029] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the movable component 130 includes a tray 131 and a circuit board 132, the circuit board 132 being connected to the tray 131, and the light-emitting chip 140 being disposed on the circuit board 132.

[0030] In this technical solution, the movable component 130 adopts a combination structure of a support plate 131 and a circuit board 132. The support plate 131 serves as a load-bearing base, providing stable support for the circuit board 132 and ensuring that the circuit board 132 is installed flat and reliably positioned. The circuit board 132 is fixed on the support plate 131, facilitating the mounting, power supply, and signal transmission of the light-emitting chip 140, and simplifying the electrical connection layout of the light-emitting chip 140. The support plate 131 and the circuit board 132 cooperate to form an integrated assembly with good structural rigidity, allowing it to move smoothly with the rotor push rod 150. This effectively prevents the light-emitting chip 140 from shifting or tilting during focus adjustment, ensuring the coaxiality and optical path stability of the light-emitting chip 140 and the lens 120, and improving the accuracy and reliability of optical testing.

[0031] like Figure 2 and Figure 3 As shown, in one feasible embodiment, a first protrusion 133 is provided on the tray 131, and the circuit board 132 is positioned on the tray 131 by means of the first protrusion 133.

[0032] In this technical solution, a first protrusion 133 is provided on the support plate 131, allowing the circuit board 132 to be positioned and installed via the first protrusion 133. This quickly determines the installation position of the circuit board 132 on the support plate 131, effectively limiting the lateral offset and rotation of the circuit board 132, and ensuring accurate and consistent installation position. The positioning structure of the first protrusion 133 is simple and reliable, requiring no complex fasteners to fix the circuit board 132, simplifying the assembly process and improving assembly efficiency. Simultaneously, it ensures that the light-emitting chip 140 is fixed in position relative to the support plate 131 on the circuit board 132, maintaining the coaxiality of the light-emitting chip 140 and the lens 120, ensuring optical path stability, and improving focus adjustment accuracy and optical testing reliability.

[0033] like Figure 2 and Figure 3 As shown, in one feasible embodiment, the adjustable focal length optical testing system further includes: a second protrusion 114 connected to the stator core and arranged toward the movable component 130; and an elastic element 160 sleeved on the first protrusion 133 and the second protrusion 114.

[0034] In this technical solution, the stator inner core 110 is provided with a second protrusion 114 facing the movable component 130, which, together with the first protrusion 133 on the support plate 131, together fits the elastic element 160, so that the two ends of the elastic element 160 are respectively positioned between the stator inner core 110 and the movable component 130, forming a stable elastic pre-tightening structure. The elastic element 160 is precisely limited by the first protrusion 133 and the second protrusion 114 to prevent displacement and fall off, and to ensure that the elastic force acts uniformly along the axial direction. When the rotor push rod 150 pushes the movable component 130 to move, the elastic element 160 extends and retracts synchronously and provides a reverse pre-tightening force, eliminating the thread transmission gap, preventing the movable component 130 from loosening and moving, and improving the stability and positioning accuracy of focus adjustment. At the same time, the elastic element 160 can assist in resetting the movable component 130, reduce adjustment resistance, maintain the coaxiality of the light-emitting chip 140 and the lens 120, and effectively improve the system structural stability, adjustment reliability and optical testing consistency.

[0035] In some examples, the elastic element 160 can be a spring.

[0036] like Figure 2 and Figure 3 As shown, in one feasible embodiment, there are two of each of the first protrusion 133, the second protrusion 114, and the elastic member 160, which are arranged in two groups on both sides of the stator inner core 110 and the moving part 130, respectively.

[0037] In this technical solution, the first protrusion 133, the second protrusion 114, and the elastic element 160 are all arranged in two sets and symmetrically on both sides of the stator inner core 110 and the movable component 130. This ensures that the elastic preload is symmetrically distributed along the axis, resulting in balanced force distribution. This effectively prevents the movable component 130 from tilting or deflecting due to unilateral force, ensuring smooth movement of the movable component 130 along the axis of the stator inner core 110. The symmetrical structure can counteract lateral forces, eliminate jamming during adjustment, and improve the smoothness of focus adjustment and positioning stability. Simultaneously, it maintains the coaxiality of the light-emitting chip 140 and the lens 120, ensuring optical path stability and improving optical testing accuracy and consistency.

[0038] like Figure 3 As shown, in one possible embodiment, the support plate 131 has a slot 134 formed on the side facing the rotor push rod 150. The rotor push rod 150 includes a housing 151 and a top member 152. The housing 151 is threaded to the stator inner core 110, and one end of the top member 152 is used to insert into the slot 134.

[0039] In this technical solution, the design of the support plate 131 and the rotor push rod 150 is further provided. The support plate 131 has a slot 134 on the side facing the rotor push rod 150. The rotor push rod 150 includes a housing 151 and a push member 152. The housing 151 is threaded to the stator inner core 110, and one end of the push member 152 is inserted into the slot 134. When adjusting the focus, the housing 151 is rotated to move axially along the thread of the stator inner core 110, causing the push member 152 to be fed synchronously. The push member 152 pushes the support plate 131 and the moving part 130 to move as a whole through the slot 134, allowing the light-emitting chip 140 to move closer to or further away from the lens 120. The insertion structure ensures reliable linkage between the push member 152 and the support plate 131, guaranteeing accurate power transmission and enabling continuous focus adjustment.

[0040] In this technical solution, the slot 134 of the support plate 131 and the top piece 152 of the rotor push rod 150 are inserted into each other, realizing the rapid positioning and reliable connection between the rotor push rod 150 and the moving part 130, making assembly convenient. The housing 151 is threadedly connected to the stator inner core 110, ensuring smooth transmission and precise adjustment. The cooperation between the top piece 152 and the slot 134 can effectively transmit axial force and avoid slippage or offset during power transmission. This structure reduces assembly difficulty, improves transmission reliability, ensures smooth movement of the moving part 130, maintains optical path stability, and improves optical testing accuracy.

[0041] like Figure 3 As shown in one feasible embodiment, the lens 120 is bonded to the stator core 110, and a flared portion 115 is formed on the stator core 110. The output end of the lens 120 is disposed facing the flared portion 115.

[0042] In this technical solution, the lens 120 is bonded to the stator core 110, ensuring a stable connection and precise positioning, preventing loosening and displacement, and guaranteeing consistent lens 120 installation. The stator core 110 has a flared section 115, with the output end of the lens 120 facing the flared section 115. This reduces optical path obstruction, lowers light energy loss, and facilitates uniform beam emission. Simultaneously, the flared section 115 protects the edge of the lens 120 from impact damage, improving structural reliability, ensuring optical path stability, and enhancing the accuracy of optical testing.

[0043] In one feasible implementation, the adjustable focal length optical testing system further includes a limiting member disposed on the movable part 130 and / or the stator inner core 110, for limiting the distance between the movable part 130 and the stator inner core 110.

[0044] In this technical solution, limiting components are provided on the movable component 130 and / or the stator core 110 to limit the extreme distance between the movable component 130 and the stator core 110, preventing the movable component 130 from moving beyond its travel range during adjustment and avoiding collision damage between the light-emitting chip 140 and the lens 120. The limiting components control the focal length adjustment range, ensuring that each adjustment is within a safe range, thus improving the safety and reliability of the system. Simultaneously, the limiting components serve as an adjustment reference, ensuring repeatability, maintaining optical path stability, and improving the consistency and stability of optical testing.

[0045] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which 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.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjustable focal length optical testing system, characterized in that, include: A stator core and a lens, wherein the lens is disposed on the stator core; A movable component and a light-emitting chip, wherein the light-emitting chip is disposed on the movable component; The rotor push rod is threaded to the stator inner core and abuts against the movable component. The rotor push rod is used to move the movable component closer to or away from the lens.

2. The adjustable focal length optical testing system according to claim 1, characterized in that, The stator core includes: A fixed plate and a connecting column are provided, the connecting column being connected to the fixed plate, the rotor push rod being threadedly connected to the connecting column, and the lens being disposed on the fixed plate.

3. The adjustable focal length optical testing system according to claim 1, characterized in that, A through groove is formed on the connecting column, and the movable part passes through the through groove.

4. The adjustable focal length optical testing system according to claim 1, characterized in that, The movable component includes: A tray and a circuit board, wherein the circuit board is connected to the tray and the light-emitting chip is disposed on the circuit board.

5. The adjustable focal length optical testing system according to claim 4, characterized in that, The tray is provided with a first protrusion, and the circuit board is positioned on the tray through the first protrusion.

6. The adjustable focal length optical testing system according to claim 5, characterized in that, Also includes: The second protrusion is connected to the stator inner core and is arranged towards the moving part; An elastic element is sleeved on the first protrusion and the second protrusion.

7. The adjustable focal length optical testing system according to claim 6, characterized in that, The first protrusion, the second protrusion, and the elastic element are all in pairs, arranged in two groups on both sides of the stator core and the movable component.

8. The adjustable focal length optical testing system according to claim 4, characterized in that, The support plate has a slot on the side facing the rotor push rod. The rotor push rod includes a housing and a top member. The housing is threaded to the stator core, and one end of the top member is used to insert into the slot.

9. The adjustable focal length optical testing system according to any one of claims 1 to 7, characterized in that, The lens is bonded to the stator core, and a flared portion is formed on the stator core. The output end of the lens is oriented towards the flared portion.

10. The adjustable focal length optical testing system according to any one of claims 1 to 7, characterized in that, Also includes: A limiting member is disposed on the movable component and / or the stator inner core to limit the distance between the movable component and the stator inner core.

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