1. OPTICAL EQUIPMENT
By Roesyah

2. OPTICAL EQUIPMENT
 Eye
 glasses
 magnifying glass
 camera
 microscope
 binoculars

3. 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

4. GLASSES
Glasses are optical devices that serve as
visual aids in eye defects.
For example Astigmatism eye defects
assisted by cylindrical glasses.

5. 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:

6. CAMERA
The 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

7. 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 obyektife
b. ocular lens
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]

8. 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)

9. 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!
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:

10. THANK YOU....