Optical equipment
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Optical equipment

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Optical equipment Optical equipment Presentation Transcript

  • OPTICAL EQUIPMENT By Roesyah
  • OPTICAL EQUIPMENT Eye glasses magnifying glass camera microscope binoculars
  • Eye Eyes are one of the human senses of vision that serves as a tool. Parts of the eye is important, among others; aquaeus humor, accommodation muscle, eye lens, cornea, pupil, iris, retina, vitreous humor, yellow spots, blind spots, and optic nerve. Defects in the eye include: 1. Myopia (nearsightedness) 2. Hipermetropi (farsightedness) 3. Presbiopi (old currency) 4. astigmatism
  • glassesGlasses are optical devices that serve as visual aids in eye defects. For example Astigmatism eye defects assisted by cylindrical glasses.
  • Loop (magnifying glass)Loop is an optical instrument consisting of a convex lens to see small objects to appear more clear and magnified. The nature of the shadow on the loop that is virtual, erect and enlarged. Loop equation:
  • For maximum eye berakomodasi s = - 25 cm (negative sign (-) indicates a shadow in front of the lens) to obtain:
  • cameraThe camera is a tool used to produce a photographic image on the film negative. The camera consists of several parts, namely: Convex lens Diaphragm Aperture Plates film The nature of the shadow: 1. real 2. inverted 3. minimized
  • microscopemicroscope is an optical instrument used to see small objects that can not be seen directly by eye. microscope consists of two convex lenses, namely; a. lens obyektife b. ocular lens
  • microscope observations Microscope observations are divided into;a. microscope observation withoutaccommodation:M = (Sob / Sob) x (Sd / Fok)b. Microscope observations with maximumaccommodations: M = (Sob / Sob) x [(Sd / Fok) +1]
  • BinocularsBinoculars or a telescope is used to observe the optical objects are very far to look more closely and clearly. 1) Binocular Star Bias-Binoculars Binoculars-reflection 2.) Field Binoculars (Binoculars Earth)
  • evaluationA microscope has objekyive and eyepiece lens with a focal length of each 3cm and 4cm. The distance between the second lens is 25cm. Determine the amount of magnification of the microscope for the eye does not berakomodasi!
  • Answer:Objects located on the righteyepiece focal pointfob = 3 cmFok = 4 cmd = 25 cm where d = Sob becauseSok +Sok = Fok = 4 cmSo: 25cm = Sob + 4 cmSob = 21 cmEyes not berakomodasi:
  • thank you....