Pasco OS-8524 APERTURE ACCESSORIES Manuel d'utilisateur

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Instruction Sheet
for the PASCO
Model OS-8524
APERTURE ACCESSORIES
012-05882A
1/96
$1.00
better
teach science
ways to
Phone (916) 786-3800 • FAX (916) 786-8905 • email: techsupp@PASCO.com
10101 Foothills Blvd. • P.O. Box 619011 • Roseville, CA 95678-9011 USA
®
© 1996 PASCO scientific
This instruction sheet written/edited by: Ann Hanks
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f/5.6
f/4
f/22
f/16
f/11
f/8
OS-8524
APERTURE
ACCESSORY
BASIC
OPTICS
17.7 mm DIA
25.0 mm DIA
4.4 mm DIA
6.3 mm DIA
8.8 mm DIA
12.5 mm DIA
f STOP FOR
100mm F.L. LENS
Figure 1: Aperture Accessories Assembly
optics bench
Central or
Peripheral Mask
Aperture Disk
100 mm
lens
Aperture Disk
When the aperture size is reduced by one setting, the in-
tensity of the light transmitted through the smaller aper-
ture is half the intensity through the next larger aperture.
The 6 apertures on this disk correspond to 6 ƒ-stops as
defined in photography. The ƒ-stop is defined as follows:
f
value =
focal length of the lens
diameter of the aperture
f/ 5.6
f/4
f/22
f/16
f/11
f/8
OS-8524
APERTURE
ACCESSORY
BASIC
OPTICS
17.7 mm DIA
25.0 mm DIA
4.4 mm DIA
6.3 mm DIA
8.8 mm DIA
12.5 mm DIA
f STOP FOR
100mm F.L. LENS
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Aperture Disk
Spherical Aberration
Attachments
Central (center) Mask
Introduction
The Pasco OS-8524 Aperture Accessories are designed to
be used with the PASCO OS-8515 Basic Optics System.
The Aperture Disk provides 6 holes, corresponding to ƒ/
4, 5.6, 8, 11, 16, and 22 apertures for a 100 mm lens (in-
cluded with the PASCO OS-8515 Basic Optics System).
The Spherical Aberration Attachments enables the user to
investigate how the center and outside parts of a lens fo-
cus light in different planes.
Equipment
This set includes two different accessories to the Basic
Optics System (OS-8515):
An Aperture Disk for demonstrating the ƒ-stops
used in cameras.
Spherical Aberration Attachments for masking the
center and outer areas of a lens to show spherical
aberration.
Assembly
Simply snap the Aperture Disk, Central Mask, or Periph-
eral Mask onto a lens from the Basic Optics System. See
Figure 1.
Peripheral (outer) Mask
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Résumé du contenu

Page 1 - Model OS-8524

Instruction Sheetfor the PASCOModel OS-8524APERTURE ACCESSORIES012-05882A1/96$1.00betterteach scienceways toPhone (916) 786-3800 • FAX (916) 786-8905

Page 2

2Aperture Accessories 012-05882A®➁ Repeat this procedure using a smaller aperture to showthat “stopping down” gives a greater depth of field(i.e., the

Page 3

3012-05882A Aperture Accessories®Limited WarrantyPASCO scientific warrants this product to be free fromdefects in materials and workmanship for a peri

Page 4

4Aperture Accessories 012-05882A®Notes:

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