Address:800 S Wineville Avenue, Ontario, CA 91761,USA
Website:www.aladdin-e.com
Email: [email protected]
8
4. Parameter & Technical
B1924-05
4-5 Camera System Specification
Item
Parameter
Type
2 millions CMOS pixels
Resolution
640×480
frame frequency
15 frame/s
Exposure
Auto
White Balance
Auto
backlight
compensation
Auto
power waste
≤
1.5W
ambient temperature
-10
℃
to 70
℃
storage temperature
-20
℃
to 80
℃
Connection type
USB connection
OS
Windows 98
，
Windows 2000
，
Windows Me
，
Windows XP
4-6 Technical terms
（
1
）
Total magnification=(magnification of objective) X (magnification of eyepiece)
（
2
）
Field of view=(line field of view of the eyepiece selected) ÷(magnification of
the objective selected)
（
3
）
N.A.=n·sinα (max), N.A.is very important parameter which marks the features
of the objective and condenser. The “n” is the refractive index of the medium
(air or immersion oil) between the cover glass of the objective and the
specimen. The “α” is the half of the aperture angle. The N.A.is bigger, the
resolution of the objective is higher.
（
4
）
Object to primary image distance: The distance between the object planes to the
primary image plane. The conjugate distance is fixed.
（
5
）
Mechanical tube length: The distance between the objective shoulder and the
ocular shoulder.
