Pinhole Imaging
★Exhibit Content: Science popularization of the straight-line propagation of light, the principle of pinhole imaging, and the optical principle of early cameras ★Interaction: Electromechanical interaction ★Operation: Press the button to start the LED light source, fix the positions of the light source and convex lens, move the pinhole baffle and imaging screen, and observe the phenomenon of the inverted image on the screen changing with distance and aperture size, intuitively understanding the law of straight-line propagation of light. ★Exhibit Description: The exhibit consists of an LED arrow light source, a convex lens, a three-position interchangeable pinhole baffle (3mm/5mm/8mm), a movable imaging screen, an electronic control system, and a display stand. It is a recommended exhibit for the KexMall exhibit mall. Visitors can change the distance between the pinhole and the screen, switch between different aperture baffles, observe changes in image clarity, brightness, and size, personally explore the optical characteristics of pinhole imaging, deeply understand the law of straight-line propagation of light, and intuitively recognize the optical principle of early camera obscuras. ★Scientific Principle: Pinhole imaging is based on the straight-line propagation of light: When light passes through a small hole, light from different parts of the object converges on the screen, forming an inverted real image; The smaller the aperture, the clearer the image, but less light enters, reducing image brightness; The size of the image is related to the object distance and image distance, satisfying the formula: image height/object height = image distance/object distance; This principle is the basis of early camera obscuras and laid the theoretical foundation for modern lens imaging technology.
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- 1.2×0.7×1.0 1.2×0.7×1.0Dimensions (unit: m) 1.2×0.7×1.0 Brand: KexMall Model: PopsciCat-optics-123 1. Materials ① Display stand: 30×30×2.5mm square tube frame + 1.5mm sheet metal cover (surface with automotive baking paint) ② Tabletop: 12mm Kelesi artificial stone, backed with flame-retardant board ③ Imaging components: stainless steel pinhole baffle, white acrylic imaging screen (with graduated scale) ④ Instruction plate, graphic panel: 5mm acrylic UV printing ⑤ Electrical control box: cold-rolled sheet metal baking paint enclosure, containing control circuits, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configuration ① Light source system: LED arrow light source (DC24V, low power consumption) ② Optical components: Φ50mm convex lens (focal length 100mm), three-position interchangeable pinhole baffle (aperture 3mm, 5mm, 8mm) ③ Display system: white acrylic imaging screen with graduated scale (for presenting inverted real image) ④ Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ⑤ Drive device: metal start button, Wenzhou Huoyanjinjing - light source power supply control module 3. Layout Requirements ① Power requirement: AC100-240V, 50/60Hz/50～60Hz 200W (standard three-wire socket) ② Installation method: direct placement ③ Entry passage: door frame size (width×height) ≥1.5m×1.0m, continuous turning interval in passage ≥2m ④ Maintenance access: not required
★Exhibit Content: Science popularization of the straight-line propagation of light, the principle of pinhole imaging, and the optical principle of early cameras ★Interaction: Electromechanical interaction ★Operation: Press the button to start the LED light source, fix the positions of the light source and convex lens, move the pinhole baffle and imaging screen, and observe the phenomenon of the inverted image on the screen changing with distance and aperture size, intuitively understanding the law of straight-line propagation of light. ★Exhibit Description: The exhibit consists of an LED arrow light source, a convex lens, a three-position interchangeable pinhole baffle (3mm/5mm/8mm), a movable imaging screen, an electronic control system, and a display stand. It is a recommended exhibit for the KexMall exhibit mall. Visitors can change the distance between the pinhole and the screen, switch between different aperture baffles, observe changes in image clarity, brightness, and size, personally explore the optical characteristics of pinhole imaging, deeply understand the law of straight-line propagation of light, and intuitively recognize the optical principle of early camera obscuras. ★Scientific Principle: Pinhole imaging is based on the straight-line propagation of light: When light passes through a small hole, light from different parts of the object converges on the screen, forming an inverted real image; The smaller the aperture, the clearer the image, but less light enters, reducing image brightness; The size of the image is related to the object distance and image distance, satisfying the formula: image height/object height = image distance/object distance; This principle is the basis of early camera obscuras and laid the theoretical foundation for modern lens imaging technology.
- 1.7×0.9×1.2m 1.7×0.9×1.2mDimensions (L×W×H): 1.7×0.9×1.2m Brand: KexMall Model: PopsciCat-optics-124 1. Materials: ① Display stand: frame 2mm cold-rolled sheet, enclosure 2.0mm cold-rolled sheet, surface with powder coating baking paint; ② Tabletop: 12mm Kelesi artificial stone, backed with flame-retardant board ③ Optical component bracket: sheet metal baking paint; ④ Instruction plate: acrylic UV inkjet printing; ⑤ Maintenance door: 2.0mm cold-rolled sheet with surface baking paint. ⑥ Electrical control box: cold-rolled sheet baking paint enclosure, containing control circuits, switching power supply, circuit breaker, terminal blocks, etc. 2. Main Configuration: ① Light source system: LED arrow light source (DC24V, low power consumption) ② Optical components: 1 set ③ Display system: white acrylic imaging screen with graduated scale (for presenting inverted real image) ④ Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits ⑤ Drive device: metal start button, Wenzhou Huoyanjinjing - light source power supply control module ⑥ Mechanical structure: HF-PANDA rotatable lens turntable + movable pinhole baffle assembly 3. Exhibition Requirements: ① Power requirement: AC22V 200W (standard three-wire socket); ② Installation base: operation console placed directly on the floor; ③ Entry passage: door frame size (width×height) ≥1.2m×2.0m, continuous turning interval in passage ≥2.5m; ④ Maintenance access: not required
★Exhibit Content: Straight-line propagation of light, pinhole imaging phenomenon ★Interaction: Electromechanical interactive operation, optical phenomenon observation ★Operation: 1. Press the "Start" button to turn on the light source; 2. Rotate the turntable to select different types of lenses; 3. Move the pinhole plate to observe changes in the image on the screen. ★Exhibit Description: This exhibit consists of a display stand, light source, lens turntable, baffle with a pinhole, and background screen. Visitors press the button to turn on the light source, rotate the turntable to change lenses, move the baffle with the pinhole, and intuitively observe changes in the size and shape of the image on the screen, intuitively understand the pinhole imaging phenomenon, comprehend the physical law of light propagating in a straight line, and also learn about the principles of human eye imaging and camera imaging. ★Scientific Principle: When a plate with a small hole is placed between the screen and the object, an inverted image of the object is formed on the screen. Moving the pinhole plate back and forth also changes the size of the image on the screen. This phenomenon is called pinhole imaging. It reflects the property of light traveling in a straight line. The human eye seeing objects is essentially also a pinhole imaging process: the iris of the human eye acts as the baffle, the pupil becomes the pinhole, the retina receives the image, and the brain automatically converts the inverted image signal into an upright image.
Review
Principle Display: ★★★★ Interaction Effect: ★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★★