Visual Imaging Mechanism
★Exhibit Content: Imaging principles of normal eye, myopia, and hyperopia, knowledge of refractive correction ★Interaction: Electromechanical interaction, optical simulation observation ★Operation: 1. Press the "Start" button to light up the LED light box; 2. Turn the handwheel to move the retinal imaging area back and forth on the slide rail; 3. Observe the changes in fundus imaging to understand the differences between normal eye, myopia, and hyperopia. ★Exhibit Description: This exhibit consists of an integrated display stand, light source module, lens simulating the crystalline lens, slidable retinal simulation screen, adjustment handwheel, and science popularization sign, and is a recommended exhibit by PopsciCat Exhibit Store. After the visitor starts the light source, they turn the handwheel to change the position of the retinal simulation plate, simulating changes in axial length, and intuitively observe the imaging differences among normal eye, myopia, and hyperopia, understand the pathogenesis of myopia and hyperopia, and at the same time recognize the optical principle of concave and convex lenses correcting vision, popularizing eye care knowledge. ★Scientific Principle: The axial length of a normal eye is about 24mm, and light rays are precisely focused on the retina after refraction by the cornea and lens; the axial length of a myopic eye is greater than 24mm, and light rays focus in front of the retina; the axial length of a hyperopic eye is less than 24mm, and light rays focus behind the retina. By moving the simulated retina, the effect of axial length changes on the imaging position is intuitively demonstrated, showing the causes of refractive errors.
Options
- 0.9*0.7*1.1m 0.9*0.7*1.1mDimensions (unit: m): 0.9*0.7*1.1m Brand: PopsciCat Model: PopsciCat-optics-195 1. Materials: ① Display stand: frame 2mm cold-rolled sheet, enclosure 2.0mm cold-rolled sheet, surface baked paint ② Tabletop: Kelesi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③ Optical lens bracket: sheet metal with baked paint; ④ Sign: 5mm acrylic UV printing; ⑤ Maintenance door: 2.0mm cold-rolled sheet with surface baked paint. 2. Main configuration: ① LED light source box; ② Convex lens simulating crystalline lens assembly; ③ Slidable retinal simulation screen; ④ Manual adjustment handwheel and linear slide rail mechanism; ⑤ Electrical control: electrical logic control system, equipped with Guanjian® K1 type PLC controller with protection specially for science exhibits 3. Exhibition requirements: ① Power requirement: AC100-240V, 50/60Hz100W (standard three-wire socket); ② Installation foundation: operation console placed directly on the floor; ③ Entry passage: door frame dimensions (width × height) ≥1.0m×2.0m, continuous turning interval in passage ≥2.5m; ④ Maintenance passage: not required
★Exhibit Content: Imaging principles of normal eye, myopia, and hyperopia, knowledge of refractive correction ★Interaction: Electromechanical interaction, optical simulation observation ★Operation: 1. Press the "Start" button to light up the LED light box; 2. Turn the handwheel to move the retinal imaging area back and forth on the slide rail; 3. Observe the changes in fundus imaging to understand the differences between normal eye, myopia, and hyperopia. ★Exhibit Description: This exhibit consists of an integrated display stand, light source module, lens simulating the crystalline lens, slidable retinal simulation screen, adjustment handwheel, and science popularization sign, and is a recommended exhibit by PopsciCat Exhibit Store. After the visitor starts the light source, they turn the handwheel to change the position of the retinal simulation plate, simulating changes in axial length, and intuitively observe the imaging differences among normal eye, myopia, and hyperopia, understand the pathogenesis of myopia and hyperopia, and at the same time recognize the optical principle of concave and convex lenses correcting vision, popularizing eye care knowledge. ★Scientific Principle: The axial length of a normal eye is about 24mm, and light rays are precisely focused on the retina after refraction by the cornea and lens; the axial length of a myopic eye is greater than 24mm, and light rays focus in front of the retina; the axial length of a hyperopic eye is less than 24mm, and light rays focus behind the retina. By moving the simulated retina, the effect of axial length changes on the imaging position is intuitively demonstrated, showing the causes of refractive errors.
Review
Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★ Overall Rating: ★★★★