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Transcript of Mm

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OPTICAL EQUIPMENT

By Roesyah

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OPTICAL EQUIPMENT

Eye

glasses

magnifying glass

camera

microscope

binoculars

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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

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glasses

Glasses are optical devices that serve

as visual aids in eye defects.

For example Astigmatism eye defects

assisted by cylindrical glasses.

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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:

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camera

The camera is a tool used to produce a photographic image on the film negative.

The camera consists of several parts, namely:Convex lensDiaphragmAperturePlates film

The nature of the shadow:1. real2. inverted3. minimized

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microscope

microscope 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 obyektifeb. ocular lens

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microscope observations

Microscope observations are divided into;a. microscope observation without accommodation:

M = (Sob '/ Sob) x (Sd / Fok)

b. Microscope observations with maximum accommodations:

M = (Sob '/ Sob) x [(Sd / Fok) +1]

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Binoculars

Binoculars 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)

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evaluation

A 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!

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Answer:

Objects located on the right

eyepiece focal point

fob = 3 cm

Fok = 4 cm

d = 25 cm where d = S'ob because

Sok +Sok = Fok = 4 cm

So: 25cm = S'ob + 4 cm

S'ob = 21 cm

Eyes not berakomodasi:

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thank you....