• microscopes
• eyeglasses
• light refraction
• diaphragms (physics)
• beam of light
• oculars
• refraction and reflection law
• lenses
• optical imaging
• telescopes
• birefringence of light
• photonics
• light reflection
• objectives
• plan-parallel plate
• mirrors
• nonlinear optics
• optic instruments
• refraction of light
• photographic latent image