A science popularization device for demonstrating a Fresnel lens optical aid landing system
By designing interactive science popularization devices consisting of Fresnel lens groups, lighting demonstration devices, and sliding rail devices, the problem of the Fresnel lens optical assisted landing system not being displayed intuitively was solved, enabling the audience to vividly understand its working principle and enhancing the scientific nature and fun of the science exhibition.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGCHUN CHINA OPTICAL SCI & TECH MUSEUM
- Filing Date
- 2024-03-14
- Publication Date
- 2026-07-07
AI Technical Summary
Existing technologies cannot intuitively and vividly demonstrate the working principle of Fresnel lens optical assisted landing systems, resulting in a lack of understanding of their specific working state and principles among ordinary viewers.
A science popularization device was designed, which includes a Fresnel lens group, a light demonstration device, a sliding rail device, and an observation device. Through interactive operation, the audience can experience the working principle of the Fresnel lens optical landing system in a realistic and vivid way. The Fresnel lens group and LED light source form a multi-layer beam of light, which, combined with the movement of the sliding rail device and the observation device, simulates the landing process of a carrier-based aircraft.
This enhances the scientific rigor and appeal of the Fresnel lens optical descent system, allowing visitors to intuitively understand its working principles and filling a gap in the lack of such demonstration devices in science and technology exhibition halls.
Smart Images
Figure CN118015901B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of optical technology applications, and in particular to a popular science device demonstrating a Fresnel lens optical assisted landing system, belonging to the category of optical science popularization and education instruments. Background Technology
[0002] With the advent of aircraft carriers, it became necessary to equip them with carrier-based aircraft. Therefore, the takeoff and landing of these aircraft became extremely crucial aspects of safe flight. According to data compiled by accident investigation agencies worldwide, 48% of accidents occur during aircraft approaches. This demonstrates that a reliable and accurate aircraft approach guidance system can significantly improve flight safety and reduce or prevent approach accidents.
[0003] With the continuous development of optical technology, Fresnel lens optical landing aids have emerged. Based on the Fresnel lens principle, the color of the light appears different at different altitudes and angles. Pilots adjust the aircraft's altitude and flight path during approach based on the observed light color, thus obtaining the correct descent trajectory. This optical landing aid system pioneered an advanced landing mode where the aircraft maintains a constant angle of descent from approach to touchdown. It features simplicity, reliability, intuitive visual guidance, mature technology, low cost, and excellent close-range performance (all the way to the decision point). my country's Liaoning aircraft carrier is also equipped with a Fresnel lens optical landing aid system. Although the general public is aware of the application of Fresnel lens optical landing aids, they often lack a thorough understanding of its specific working state and principles. Therefore, how to vividly and intuitively demonstrate this Fresnel lens optical landing aid system in dynamic processes has become an urgent problem to be solved in science museum exhibitions and popular science education. Summary of the Invention
[0004] The purpose of this invention is to provide a demonstration device for observing Fresnel lens optical assisted landing systems in a more intuitive and vivid way.
[0005] The technical solution described in this invention is a popular science device demonstrating a Fresnel lens optical landing system. The device comprises a Fresnel lens assembly, a lighting demonstration device, a sliding rail assembly, an observation device, and a display stand. The Fresnel lens assembly is connected to the rear panel of an aircraft carrier model via nuts. The lighting demonstration device is connected to the right end of the display stand. The sliding rail assembly includes a vertical sliding rail, a horizontal sliding rail, and a slider base. The bottom of the vertical sliding rail is fixed to the upper surface of the display stand via nuts. The two ends of the horizontal sliding rail are connected to the vertical sliding rail, allowing it to slide up and down on the vertical rail. The slider base is connected to the horizontal sliding rail, allowing it to slide left and right on the horizontal sliding rail. The observation device has a connecting component at its bottom, connecting it to the slider base of the sliding rail assembly. The connecting component can rotate at a certain angle in both horizontal and pitch directions, allowing the observation device to adjust its viewing angle by a certain horizontal and pitch angle. An aircraft carrier model is placed above the display stand.
[0006] The Fresnel lens group includes a first light box, a second light box, a third light box, a fourth light box, a fifth light box, a light source, a red vertical light group, and a green horizontal light group; the first light box, the second light box, the third light box, the fourth light box, and the fifth light box are arranged and connected in sequence from top to bottom.
[0007] The first light box has a first Fresnel lens at its rear end and a first red cylindrical lens at its front end.
[0008] A second Fresnel lens is placed at the rear end of the second light box, and a first yellow cylindrical lens is placed at the front end.
[0009] A third Fresnel lens is placed at the rear end of the third light box, and an orange cylindrical lens is placed at the front end.
[0010] The fourth light box has a fourth Fresnel lens at its rear end and a second yellow cylindrical lens at its front end.
[0011] The fifth light box has a fifth Fresnel lens at its rear end and a second red cylindrical lens at its front end.
[0012] The light source refracts five beams of light through five vertically arranged light boxes, and the exit angles of the five beams correspond to the width and angle of the five light strips, respectively.
[0013] The red vertical light group is divided into two groups, left and right, and is evenly distributed vertically on both sides of the first to fifth light boxes.
[0014] The green horizontal light group is divided into two groups, left and right, and is distributed on both sides of the first to fifth light boxes at the same horizontal level as the third light box.
[0015] The lighting demonstration device consists of, from top to bottom, a first light strip, a second light strip, a third light strip, a fourth light strip, and a fifth light strip.
[0016] The first light strip is a red LED light source.
[0017] The second light strip is a yellow LED light source.
[0018] The third light strip is a yellow LED light source.
[0019] The fourth light strip is a yellow LED light source.
[0020] The fifth light strip is a red LED light source.
[0021] The slide rail device is made of metal, and both the horizontal slide rail and the slider base have a certain damping effect.
[0022] The observation device is equipped with a shipborne aircraft model at the front end and an infrared trigger switch at the rear end. When a visitor approaches to operate it, it automatically powers on and starts up. When no one operates it for a certain period of time, it automatically powers off and goes into standby mode.
[0023] The beneficial effects of the present invention: When the LED light source of the Fresnel lens group illuminates the light box, the Fresnel lens at the rear end of the light box will form five layers of beams with a certain extension angle in the vertical direction. Each layer of beams, after passing through the cylindrical lens at the front end of the light box, will also form a certain angle in the horizontal direction, that is, form five layers of beams in a pyramid shape in both the horizontal and vertical directions.
[0024] The spectator controls the movement of the observation device within the vertical and horizontal range of the sliding rail mechanism:
[0025] 1. When the observation device moves to the left or right sides of the horizontal position, it exceeds the range of the horizontal LED light source's refracted beam. The red vertical light group lights up. No matter how it moves up or down, the light source of the light box cannot be observed to light up. This indicates that the carrier-based aircraft is out of the visible range of the beam. In this state, it means that the carrier-based aircraft is not ready to land.
[0026] II. When the observation device is in the horizontal center position, during vertical movement, the Fresnel lens group viewed through the device will show an orange beam in the center, turning yellow and red beams upwards and downwards respectively, with the green horizontal light groups on both sides as references. When the height and angle of the observation device are correct, the viewer can observe the following through the device:
[0027] 1. If the red light of the first light box is lit up and is above the green reference light, and the red light of the first light strip is lit up, it means that the carrier-based aircraft is within the beam layer emitted by the first light box, the carrier-based aircraft is too high and needs to go around immediately.
[0028] 2. If the yellow light of the second light box is seen to be on and above the green reference light, and the yellow light of the second light strip is on, it indicates that the carrier-based aircraft is within the beam range emitted by the second light box and needs to reduce its flight altitude.
[0029] 3. If the orange light of the third light box is lit up and is in the center of the green horizontal light group, and the orange light of the second light strip is lit up, it means that the carrier-based aircraft is within the beam layer emitted by the third light box, and that the carrier-based aircraft can accurately glide and land by maintaining this angle.
[0030] 4. If the yellow light of the fourth light box is lit up and it is under the green reference light, and the yellow light of the fourth light strip is lit up, it means that the carrier-based aircraft is within the beam range emitted by the fourth light box, and the carrier-based aircraft needs to increase its flight altitude.
[0031] 5. If the red light of the fourth light box is lit up and it is under the green reference light, and the red light of the fifth light strip is lit up, it means that the carrier-based aircraft is within the beam range emitted by the fifth light box. The carrier-based aircraft needs to immediately increase its flight altitude, otherwise it will crash into the end face of the tail pillar of the aircraft carrier or land in the sea behind the tail.
[0032] Previously, the principles of Fresnel lens optical landing systems were mostly demonstrated through pictures and videos. This invention presents the working principle of Fresnel lens optical landing systems to the audience in a realistic and vivid way through interactive operation, which increases the scientific nature and fun, and makes up for the lack of such demonstration devices in science and technology exhibition halls. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of a popular science device demonstrating a Fresnel lens optical assisted landing system.
[0034] Figure 2 This is a schematic diagram of a Fresnel lens assembly, a popular science device demonstrating a Fresnel lens optical assisted landing system.
[0035] Figure 3 This is a schematic diagram of a light demonstration device for popular science devices that demonstrate a Fresnel lens optical assisted landing system.
[0036] Figure 4 This is a schematic diagram of a slide rail device used in popular science demonstrations of a Fresnel lens optical assisted landing system.
[0037] The components include: 1. Fresnel lens group; 11. First light box; 111. First Fresnel lens; 112. First red cylindrical lens; 12. Second light box; 121. Second Fresnel lens; 122. First yellow cylindrical lens; 13. Third light box; 131. Third Fresnel lens; 132. Orange cylindrical lens; 14. Fourth light box; 141. Fourth Fresnel lens; 142. Second yellow cylindrical lens; 15. Fifth light box; 151. Fifth Fresnel lens; 152. Second red cylindrical lens; 16. LED light source; 17. Red vertical light group; 18. Green horizontal light group; 2. Lighting demonstration device; 21. First light strip; 22. Second light strip; 23. Third light strip; 24. Fourth light strip; 25. Fifth light strip; 3. Sliding rail device; 31. Vertical sliding rail; 32. Horizontal sliding rail; 33. Sliding block base; 4. Observation device; 5. Display stand. Detailed Implementation
[0038] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0039] like Figure 1 As shown, a popular science device demonstrating a Fresnel lens optical landing system comprises a Fresnel lens group, a lighting demonstration device, a sliding rail device, an observation device, and a display stand. The Fresnel lens group is connected to the rear panel of the aircraft carrier model via nuts. The lighting demonstration device is connected to the right end of the display stand. The sliding rail device includes a vertical sliding rail, a horizontal sliding rail, and a slider base. The bottom of the vertical sliding rail is fixed to the upper surface of the display stand via nuts. The two ends of the horizontal sliding rail are connected to the vertical sliding rail, allowing it to slide up and down on the vertical rail. The slider base is connected to the horizontal sliding rail, allowing it to slide left and right on the horizontal sliding rail. The observation device has a connecting component at its bottom, connecting it to the slider base of the sliding rail device. The connecting component can rotate at a certain angle in both horizontal and pitch directions, allowing the observation device to adjust its viewing angle by a certain horizontal and pitch angle. An aircraft carrier model is placed above the display stand.
[0040] like Figure 2 As shown, the Fresnel lens group includes a first light box, a second light box, a third light box, a fourth light box, a fifth light box, a light source, a red vertical light group, and a green horizontal light group; the first light box, the second light box, the third light box, the fourth light box, and the fifth light box are arranged and connected in sequence from top to bottom.
[0041] The first light box has a first Fresnel lens at its rear end and a first red cylindrical lens at its front end.
[0042] A second Fresnel lens is placed at the rear end of the second light box, and a first yellow cylindrical lens is placed at the front end.
[0043] A third Fresnel lens is placed at the rear end of the third light box, and an orange cylindrical lens is placed at the front end.
[0044] The fourth light box has a fourth Fresnel lens at its rear end and a second yellow cylindrical lens at its front end.
[0045] The fifth light box has a fifth Fresnel lens at its rear end and a second red cylindrical lens at its front end.
[0046] The light source refracts five beams of light through five vertically arranged light boxes, and the exit angles of the five beams correspond to the width and angle of the five light strips, respectively.
[0047] The red vertical light group is divided into two groups, left and right, and is evenly distributed vertically on both sides of the first to fifth light boxes.
[0048] The green horizontal light group is divided into two groups, left and right, and is distributed on both sides of the first to fifth light boxes at the same horizontal level as the third light box.
[0049] like Figure 3 As shown, the structure of the light demonstration device consists of, from top to bottom, a first light strip, a second light strip, a third light strip, a fourth light strip, and a fifth light strip.
[0050] The first light strip is a red LED light source.
[0051] The second light strip is a yellow LED light source.
[0052] The third light strip is a yellow LED light source.
[0053] The fourth light strip is a yellow LED light source.
[0054] The fifth light strip is a red LED light source.
[0055] like Figure 4 As shown, the slide rail device is made of metal, and both the horizontal slide rail and the slider base have a certain damping effect.
[0056] The observation device is equipped with a shipborne aircraft model at the front end and an infrared trigger switch at the rear end. When a visitor approaches to operate it, it automatically powers on and starts up. When no one operates it for a certain period of time, it automatically powers off and goes into standby mode.
[0057] In a specific embodiment of the present invention, the audience observes the changes in the light of the lightbox on the Fresnel lens group through the observation device. As the light source illuminates the lightbox, the Fresnel lens at the rear of the lightbox forms five layers of beams with a certain extension angle in the vertical direction. Each layer of beams, after passing through the cylindrical lens at the front of the lightbox, also forms a certain angle in the horizontal direction, that is, forming five layers of beams in a pyramid shape in both the horizontal and vertical directions.
[0058] The spectator controls the movement of the observation device within the vertical and horizontal range of the sliding rail mechanism:
[0059] Implementation Case 1: When the observation device moves to the left or right sides of the horizontal position, it exceeds the range of the horizontal LED light source's refracted beam. The red vertical light group lights up. No matter how it moves up or down, the light source of the light box cannot be observed to light up. This indicates that the carrier-based aircraft is out of the visible range of the beam. In this state, it means that the carrier-based aircraft is not ready to land.
[0060] Implementation Case 2: When the observation device is in the horizontal center position, during vertical movement, the Fresnel lens group viewed through the device will show an orange beam in the center, turning yellow and red beams upwards and downwards respectively, with the green horizontal light groups on both sides as references. When the height and angle of the observation device are correct, the viewer can observe the following through the device:
[0061] 1. If the red light of the first light box is lit up and is above the green reference light, and the red light of the first light strip is lit up, it means that the carrier-based aircraft is within the beam layer emitted by the first light box, the carrier-based aircraft is too high and needs to go around immediately.
[0062] 2. If the yellow light of the second light box is seen to be on and above the green reference light, and the yellow light of the second light strip is on, it indicates that the carrier-based aircraft is within the beam range emitted by the second light box and needs to reduce its flight altitude.
[0063] 3. If the orange light of the third light box is lit up and is in the center of the green horizontal light group, and the orange light of the second light strip is lit up, it means that the carrier-based aircraft is within the beam layer emitted by the third light box, and that the carrier-based aircraft can accurately glide and land by maintaining this angle.
[0064] 4. If the yellow light of the fourth light box is lit up and it is under the green reference light, and the yellow light of the fourth light strip is lit up, it means that the carrier-based aircraft is within the beam range emitted by the fourth light box, and the carrier-based aircraft needs to increase its flight altitude.
[0065] 5. If the red light of the fourth light box is lit up and it is under the green reference light, and the red light of the fifth light strip is lit up, it means that the carrier-based aircraft is within the beam range emitted by the fifth light box. The carrier-based aircraft needs to immediately increase its flight altitude, otherwise it will crash into the end face of the tail pillar of the aircraft carrier or land in the sea behind the tail.
[0066] The above implementation scheme is just one example, but the present invention is not limited to the above implementation case. The audience can operate the observation device to stop and observe at any position within the range of motion of the sliding rail device, so as to understand the working principle of the Fresnel lens-assisted descent optical system in a vivid and realistic way, which increases the scientific nature and interest and makes up for the lack of such demonstration devices in science and technology exhibition halls.
Claims
1. A popular science device demonstrating a Fresnel lens optical assisted landing system, characterized in that: A popular science device demonstrating a Fresnel lens optical assisted landing system comprises a Fresnel lens assembly, a lighting demonstration device, a sliding rail device, an observation device, and a display stand. The Fresnel lens assembly includes a first light box, a second light box, a third light box, a fourth light box, a fifth light box, a light source, a red vertical light group, and a green horizontal light group. The first, second, third, fourth, and fifth light boxes are sequentially connected from top to bottom by snap-fit fasteners. A first Fresnel lens is placed at the rear end of the first light box, and a first red cylindrical lens is placed at the front end. The second light box... A second Fresnel lens is placed, with a first yellow cylindrical lens at its front end; a third Fresnel lens is placed at the rear end of the third light box, with an orange cylindrical lens at its front end; a fourth Fresnel lens is placed at the rear end of the fourth light box, with a second yellow cylindrical lens at its front end; a fifth Fresnel lens is placed at the rear end of the fifth light box, with a second red cylindrical lens at its front end; the light source passes through five vertically arranged light boxes, and the exit angles of the five refracted beams correspond to the width and angle of the five light strips, respectively; the red vertical light group is divided into two groups, left and right, and is evenly vertically distributed at the front end of the fifth light box. The first to fifth light boxes are located on both sides; the green horizontal light groups are divided into left and right groups, distributed horizontally on both sides of the first to fifth light boxes, at the same horizontal height as the third light box; the Fresnel lens group is connected to the rear panel of the aircraft carrier model by nuts; the lighting demonstration device is connected to the right end of the display stand; the sliding rail device structure includes a vertical sliding rail, a horizontal sliding rail, and a slider base; the bottom of the vertical sliding rail is fixed to the upper surface of the display stand by nuts; the two ends of the horizontal sliding rail are connected to the vertical sliding rail, allowing it to slide up and down on the vertical sliding rail; the slider base is connected to the horizontal sliding rail, allowing it to slide left and right on the horizontal sliding rail; the observation device has a carrier-based aircraft model at the front and an infrared trigger switch at the rear; it automatically powers on and starts when a visitor approaches to operate it, and automatically powers off and goes into standby mode when no one operates it for a certain period of time; the observation device has a connecting component at the bottom, and the observation device is connected to the slider base of the sliding rail device through the connecting component; the connecting component can rotate at a certain angle in the horizontal and pitch directions, which can drive the observation device to adjust the viewing angle at a certain horizontal and pitch angle; the aircraft carrier model is set above the display stand.
2. The popular science device for demonstrating a Fresnel lens optical assisted landing system according to claim 1, characterized in that, The structure of the light demonstration device, from top to bottom, consists of a first light strip, a second light strip, a third light strip, a fourth light strip, and a fifth light strip; The first light strip is a red LED light source; The second light strip is a yellow LED light source; The third light strip is a yellow LED light source; The fourth light strip is a yellow LED light source; The fifth light strip is a red LED light source.
3. The popular science device for demonstrating a Fresnel lens optical assisted landing system according to claim 1, characterized in that, The slide rail device is made of metal, and both the horizontal slide rail and the slider base have a certain damping effect.