A small aperture imaging experimental aperture interchangeable device
By designing a pinhole imaging experimental device with interchangeable aperture and adjustable light source, the problem of existing devices being unable to switch images and adjust the aperture was solved, achieving efficient and diversified teaching experiments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANYANG NORMAL UNIV
- Filing Date
- 2026-03-30
- Publication Date
- 2026-06-05
AI Technical Summary
Existing pinhole imaging experimental devices cannot switch between different images and imaging content as needed, and the aperture cannot be adjusted, resulting in poor teaching effectiveness.
A device for interchangeable apertures in pinhole imaging experiments was designed. The first adjustment mechanism enables rapid aperture replacement, while the second adjustment mechanism adjusts the direction and angle of the light source. Combined with an electric slide and a PLC controller, automated adjustment is achieved.
It improves the efficiency and continuity of teaching experiments, expands the diversity of experiments, and allows for the observation of imaging effects under different aperture and light source conditions in the same experiment.
Smart Images
Figure CN122157553A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of pinhole imaging technology, specifically to a device for changing the experimental aperture of pinhole imaging. Background Technology
[0002] Pinhole imaging is a natural phenomenon where a plate with a small hole is placed between a wall and an object, creating an inverted real image of the object on the wall. Moving the plate back and forth changes the size of the image on the wall, demonstrating the property of light to travel in straight lines.
[0003] A search revealed a novel pinhole imaging experimental box disclosed in Chinese utility model patent CN201620808060.0. This utility model patent includes a box body and an experimental device. The experimental device is located inside the box body and includes a light-emitting element, a baffle, and a transmission box. One side of the inner wall of the box body is a display plate. The display plate, baffle, and light-emitting element are parallel to each other and aligned on a central line. The transmission box contains a transmission device and a measuring device. The measuring device can measure the distance between the display plate and the baffle, and between the baffle and the light-emitting element. A small circular hole is located in the center of the baffle, and a camera is located at the upper end of the baffle, facing the display plate. An LCD operating screen and a video output port are located on the outside of the box body. The LCD operating screen contains a storage module, and the video output port is connected to the camera.
[0004] However, the device has a limited range of effects and cannot switch between different images and imaging content as needed, nor can it adjust the aperture according to the user's needs. This makes it inconvenient to observe different effects in the same experiment, resulting in a fragmented summary of the teaching rules of pinhole imaging and poor teaching effectiveness. Therefore, a pinhole imaging experiment aperture interchangeable device is proposed to solve the above-mentioned problems. Summary of the Invention
[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a device with interchangeable apertures for pinhole imaging experiments. This device offers the advantages of easy image and aperture adjustment, solving the problems of limited functionality, inability to switch between different images and imaging content as needed, and inability to adjust the aperture according to user requirements. Furthermore, it hinders the observation of different effects within the same experiment, leading to fragmented summaries of pinhole imaging teaching principles and poor teaching effectiveness.
[0006] (II) Technical Solution To achieve the above-mentioned purpose of facilitating image and aperture adjustment, the present invention provides the following technical solution: a device for interchangeable aperture in pinhole imaging experiments, comprising a base, a receiving box on the top of the base, two electric sliding stages installed inside the base, a placement frame on the top of the base, an imaging plate on the top of the base, and a first adjustment mechanism on the top of the base. The first adjustment mechanism includes a baffle, a movable plate, a round hole, a positioning hole, a fixed plate, an adjusting screw, a sliding sleeve, a pull rod, a plug, a limiting groove, and a handle. The top of the base is provided with a baffle, and the movable plate is movably installed inside the baffle. The movable plate has a round hole inside and a positioning hole at its top. The right side of the baffle is installed with a fixed plate, and the adjusting screw is movably installed inside the fixed plate. The adjusting screw is sleeved with a sliding sleeve, and a pull rod is installed outside the sliding sleeve. A plug is installed at the bottom of the pull rod. The baffle has a limiting groove inside, and a handle is installed on the front side of the movable plate.
[0007] Preferably, a support plate is installed inside the base, the two electric slides are located on the left and right sides of the support plate respectively, a protective cover is slidably installed on the top of the base, and a second adjustment mechanism is provided on the top of the base.
[0008] Preferably, the second adjustment mechanism includes a motor, a first electric push rod, a placement slot, a second electric push rod, and a clamping plate. The motor is slidably connected to the top of the electric slide on the left side. The first electric push rod is installed inside the protective cover. Placement slots are provided on both the left and right sides of the placement frame. The second electric push rod is installed inside the placement slot. The output end of the second electric push rod is fixedly installed with a clamping plate.
[0009] Preferably, the first electric push rod is connected to the output shaft of the motor, the top of the first electric push rod extends to the outside of the protective cover and is connected to the bottom of the placement frame, and lighting lamps are installed on the left and right sides and the top of the placement frame.
[0010] Preferably, there are two sets of the second electric push rods, with two push rods in each set, and the two push rods in each set are respectively connected to the inner walls of the front and rear sides of the placement groove.
[0011] Preferably, the baffle has a sliding opening inside, the movable plate is located inside the sliding opening, there are no fewer than six circular holes, the diameter of each circular hole decreases from left to right, and the movable plate has a slot inside.
[0012] Preferably, the insert extends into the slot from the side away from the pull rod, the top of the adjusting screw extends to the outside of the fixing plate, and the bottom of the adjusting screw is rotatably connected to the inner bottom wall of the fixing plate.
[0013] Preferably, the pull rod is located inside the limiting groove, and the imaging plate is slidably connected to the top of the electric slide on the right side.
[0014] Preferably, a PLC controller is provided on the front side of the base. The PLC controller is wirelessly connected to the motor, the first electric push rod, the second electric push rod, and the electric slide. The placement frame and the imaging plate are located on the left and right sides of the baffle, respectively.
[0015] Beneficial effects Compared with the prior art, the present invention provides a device for interchangeable aperture in pinhole imaging experiments, which has the following advantages: 1. This interchangeable aperture device for pinhole imaging experiments, through the ingenious design of the first adjustment mechanism, allows users to easily and quickly replace circular holes of different diameters. This enables them to observe and compare the effects of different apertures on imaging brightness, clarity, etc., in the same experiment without replacing the entire experimental device, greatly improving the efficiency and continuity of teaching experiments.
[0016] 2. The interchangeable aperture device for pinhole imaging experiments allows for free adjustment of the direction, angle, and height of the luminescent object in the placement frame through the cooperation of the motor and electric push rod of the second adjustment mechanism. It can even fix objects of different sizes through the clamping plate, thereby realizing pinhole imaging experiments with different luminescent objects and at different angles on the same device, expanding the diversity of experiments. Attached Figure Description
[0017] Figure 1 This is a frontal three-dimensional schematic diagram of the present invention; Figure 2 This is a three-dimensional schematic diagram of the baffle of the present invention; Figure 3 This is a schematic diagram of the movable plate of the present invention; Figure 4 This is a three-dimensional schematic diagram of the limiting frame of the present invention; Figure 5 This is a schematic diagram of the second adjustment mechanism of the present invention; Figure 6 This is a cross-sectional view of the present invention; Figure 7 For the present invention Figure 6 Enlarged diagram of point A in the middle.
[0018] In the diagram: 1. Base, 2. Receiving box, 3. Electric slide, 4. Limiting frame, 5. Imaging plate, 6. First adjustment mechanism, 601. Baffle, 602. Moving plate, 603. Round hole, 604. Positioning hole, 605. Fixing plate, 606. Adjusting screw, 607. Sliding sleeve, 608. Pull rod, 609. Insert block, 610. Limiting groove, 611. Handle, 7. Support plate, 8. Second adjustment mechanism, 801. Motor, 802. First electric push rod, 803. Placement groove, 804. Second electric push rod, 805. Clamping plate, 9. Lighting lamp, 10. Slot. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Please see Figure 1-7 A device for interchangeable aperture in pinhole imaging experiments includes a base 1, a housing 2 on the top of the base 1, two electric sliding stages 3 installed inside the base 1, a placement frame 4 on the top of the base 1, an imaging plate 5 on the top of the base 1, and a first adjustment mechanism 6 on the top of the base 1.
[0021] Specifically, the base 1 is the supporting foundation of the entire device, and an electric slide 3 and a support plate 7 are installed inside, providing a stable mounting platform for other components. The housing 2 protects the experimental device. There are two electric slides 3, located on the left and right sides of the support plate 7 respectively. They precisely control the sliding of the placement frame 4 and the imaging plate 5 along the base 1, thereby adjusting the object distance and image distance, which is the key to adjusting the image clarity. The placement frame 4 is used to place luminous objects such as light bulbs, and its position and orientation can be adjusted by the second adjustment mechanism 8. The imaging plate 5 is used to receive and display pinhole imaging, and its position can be adjusted by the electric slide 3.
[0022] Example 1 The first adjustment mechanism 6 includes a baffle 601, a movable plate 602, a round hole 603, a positioning hole 604, a fixed plate 605, an adjusting screw 606, a sliding sleeve 607, a pull rod 608, an insert block 609, a limiting groove 610, and a handle 611. The baffle 601 is provided on the top of the base 1. The movable plate 602 is movably installed inside the baffle 601. The movable plate 602 has a round hole 603 inside and a positioning hole 604 on the top of the movable plate 602. The fixed plate 605 is installed on the right side of the baffle 601. The adjusting screw 606 is movably installed inside the fixed plate 605. The sliding sleeve 607 is sleeved on the outside of the adjusting screw 606. The pull rod 608 is installed on the outside of the sliding sleeve 607. The insert block 609 is installed at the bottom of the pull rod 608. The limiting groove 610 is provided inside the baffle 601. The handle 611 is installed on the front side of the movable plate 602.
[0023] The baffle 601 has a sliding opening inside, the movable plate 602 is located inside the sliding opening, there are no fewer than six round holes 603, and the diameter of each round hole 603 decreases from left to right. The movable plate 602 has a slot 10 inside.
[0024] The insert 609 extends into the slot 10 from the side away from the pull rod 608. The top of the adjusting screw 606 extends to the outside of the fixing plate 605. The bottom of the adjusting screw 606 is rotatably connected to the inner bottom wall of the fixing plate 604. The pull rod 608 is located inside the limiting groove 610. The imaging plate 5 is slidably connected to the top of the right electric slide 3.
[0025] In this embodiment, the first adjustment mechanism 6 is the core aperture adjustment structure, which consists of a baffle 601, a moving plate 602, a round hole 603, an adjustment screw 606, etc. Rotating the adjustment screw 606 drives the pull rod 608 and the insert block 609 to move, so that the insert block 609 is engaged with the positioning holes 604 at different positions on the moving plate 602, thereby fixing the round holes 603 of different apertures facing the light source, realizing the rapid replacement of apertures. Pulling the handle 611 outward to move the moving plate 602 left and right can make the round holes 603 of different apertures aligned with the light source.
[0026] Example 2 The base 1 has a support plate 7 installed inside, and two electric slides 3 are located on the left and right sides of the support plate 7 respectively. A protective cover is slidably installed on the top of the base 1, and a second adjustment mechanism 8 is provided on the top of the base 1.
[0027] The second adjustment mechanism 8 includes a motor 801, a first electric push rod 802, a placement slot 803, a second electric push rod 804, and a clamping plate 805. The top of the left electric slide 3 is slidably connected to the motor 801. The first electric push rod 802 is installed inside the protective cover. Placement slots 803 are provided on both the left and right sides of the placement frame 4. The second electric push rod 804 is installed inside the placement slot 803. The output end of the second electric push rod 804 is fixedly installed with the clamping plate 805. The first electric push rod 802 is connected to the output shaft of the motor 801. The top of the first electric push rod 802 extends to the outside of the protective cover and is connected to the bottom of the placement frame 4. Lighting lamps 9 are installed on the left and right sides and the top of the placement frame 4.
[0028] There are two sets of second electric push rods 804, with two push rods 804 in each set. The two push rods 804 in each set are connected to the inner walls of the front and rear sides of the placement slot 803 respectively. A PLC controller is set on the front side of the base 1. The PLC controller is wirelessly connected to the motor 801, the first electric push rod 802, the second electric push rod 804 and the electric slide 3. The placement frame 4 and the imaging plate 5 are located on the left and right sides of the baffle 601 respectively.
[0029] In this embodiment, the second adjustment mechanism 8 is used to adjust the direction and angle of the placement frame 4. The motor 801 drives the first electric push rod 802 to rotate, thereby adjusting the tilt angle of the placement frame 4, so as to facilitate the placement of different imaging images in different placement slots 803. The second electric push rod 804 drives the clamping plate 805 to clamp light-emitting objects of different sizes.
[0030] In addition, the lighting lamp 9 provides a stable light source to ensure clear imaging. The PLC controller is the control center of the entire device and is wirelessly connected to the motor 801, each electric push rod and electric slide 3 to achieve automatic adjustment.
[0031] In summary, the interchangeable aperture device for pinhole imaging experiments, in Embodiment 1, mainly focuses on aperture adjustment. Through the ingenious design of the first adjustment mechanism 6, users can easily and quickly replace the circular aperture 603 with different apertures, thereby observing and comparing the effects of different apertures on imaging brightness, clarity, etc. in the same experiment without replacing the entire experimental device, which greatly improves the efficiency and continuity of teaching experiments. Example 2 focuses on the flexible adjustment of the light source. Through the cooperation of the motor 801 and electric push rod 802 of the second adjustment mechanism 8, the direction, angle and height of the light-emitting object in the placement frame 4 can be freely adjusted. Even objects of different sizes can be fixed by the clamping plate 805, so that pinhole imaging experiments with different light-emitting objects and different angles can be realized on the same device, thus expanding the diversity of experiments. These two embodiments work together, through the precise control of the motorized slide 3 and the PLC controller, to realize a comprehensive and easy-to-operate pinhole imaging experimental platform. Users can freely combine aperture size and light source parameters to systematically explore the laws of pinhole imaging.
[0032] Furthermore, the device should be used according to the following steps: Step 1: Place the device on a horizontal table and turn on the power; Step 2: Place the luminous object, such as a candle or light bulb, into the placement box 4, activate the second electric push rod 804, and fix it in place by the clamping plate 805; Step 3: According to the experimental requirements, select the appropriate diameter hole 603 on the moving plate 602 using the handle 611 and the adjusting screw 606, and fix it. Step 4: Start the two electric slides 3 through the PLC controller and adjust the positions of the placement frame 4 and the imaging plate 5 synchronously until a clear and appropriately sized inverted real image is observed on the imaging plate 5. Step 5: During the experiment, you can do so as needed: Adjusting object distance and image distance: Change the distance between the placement frame 4 and the imaging plate 5 by using the electric slide 3, and observe the change in image size; Change the aperture: Change the circular aperture 603 of different diameters through the first adjustment mechanism 6 and observe the changes in the brightness and sharpness of the image; Adjust the light source: Change the direction or angle of the luminous object through the second adjustment mechanism 8 and observe the changes in the image; Step 6: After the experiment, turn off the lights 9 and the power supply, put all components back in their places, and tidy up the experimental equipment.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for interchangeable aperture in pinhole imaging experiments, comprising a base (1), characterized in that: The base (1) is provided with a receiving box (2) on the top, two electric sliding tables (3) are installed inside the base (1), a placement frame (4) is provided on the top of the base (1), an imaging plate (5) is provided on the top of the base (1), and a first adjustment mechanism (6) is provided on the top of the base (1). The first adjustment mechanism (6) includes a baffle (601), a movable plate (602), a round hole (603), a positioning hole (604), a fixed plate (605), an adjusting screw (606), a sliding sleeve (607), a pull rod (608), an insert (609), a limiting groove (610), and a handle (611). The top of the base (1) is provided with a baffle (601), and a movable plate (602) is movably installed inside the baffle (601). A round hole (603) is opened inside the movable plate (602). The top of the baffle (601) has a positioning hole (604), a fixing plate (605) is installed on the right side of the baffle (601), an adjusting screw (606) is movably installed inside the fixing plate (605), a sliding sleeve (607) is sleeved on the outside of the adjusting screw (606), a pull rod (608) is installed on the outside of the sliding sleeve (607), a plug (609) is installed at the bottom of the pull rod (608), a limit groove (610) is opened inside the baffle (601), and a handle (611) is installed on the front side of the movable plate (602).
2. The interchangeable aperture device for pinhole imaging experiments according to claim 1, characterized in that: The base (1) is equipped with a support plate (7), and the two electric slides (3) are located on the left and right sides of the support plate (7) respectively. A protective cover is slidably installed on the top of the base (1), and a second adjustment mechanism (8) is provided on the top of the base (1).
3. The interchangeable aperture device for pinhole imaging experiments according to claim 2, characterized in that: The second adjustment mechanism (8) includes a motor (801), a first electric push rod (802), a placement slot (803), a second electric push rod (804), and a clamping plate (805). The top of the electric slide (3) on the left side is slidably connected to the motor (801). The first electric push rod (802) is installed inside the protective cover. Placement slots (803) are provided on both the left and right sides of the placement frame (4). The second electric push rod (804) is installed inside the placement slot (803). The output end of the second electric push rod (804) is fixedly installed with a clamping plate (805).
4. The interchangeable aperture device for pinhole imaging experiments according to claim 3, characterized in that: The first electric push rod (802) is connected to the output shaft of the motor (801). The top of the first electric push rod (802) extends to the outside of the protective cover and is connected to the bottom of the placement frame (4). Lighting lamps (9) are installed on the left and right sides and the top of the placement frame (4).
5. The interchangeable aperture device for pinhole imaging experiments according to claim 3, characterized in that: There are two sets of the second electric push rod (804), and each set has two second electric push rods (804). The two second electric push rods (804) in each set are respectively connected to the inner walls of the front and rear sides of the placement groove (803).
6. The interchangeable aperture device for pinhole imaging experiments according to claim 1, characterized in that: The baffle (601) has a sliding opening inside, the movable plate (602) is located inside the sliding opening, there are no less than six round holes (603), the diameter of each round hole (603) decreases from left to right, and the movable plate (602) has a slot (10) inside.
7. The interchangeable aperture device for pinhole imaging experiments according to claim 6, characterized in that: The insert (609) extends into the interior of the slot (10) on the side away from the pull rod (608), the top of the adjusting screw (606) extends to the outside of the fixing plate (605), and the bottom of the adjusting screw (606) is rotatably connected to the inner bottom wall of the fixing plate (604).
8. The interchangeable aperture device for pinhole imaging experiments according to claim 1, characterized in that: The pull rod (608) is located inside the limiting groove (610), and the imaging plate (5) is slidably connected to the top of the electric slide (3) on the right side.
9. A device for interchangeable aperture in pinhole imaging experiments according to claim 3, characterized in that: A PLC controller is provided on the front side of the base (1). The PLC controller is wirelessly connected to the motor (801), the first electric push rod (802), the second electric push rod (804), and the electric slide (3). The placement frame (4) and the imaging plate (5) are located on the left and right sides of the baffle (601), respectively.