Shenzhen Dehong Vision Technology Co., Ltd.
Phone: 183 0666 4155
Fax: 0755-2372-6873
Email: 908450505@qq.com
Website: www.dhkj123.com
en.dhkj123.com
Address: Goldman Sachs Building, No. 18 Shajing
Center Road, Baoan District, Shenzhen
The image is too small relative to the magnification of the object
β = y ’/ y
= b / a
= NA / NA ’
= CCD camera element size / field of view actual size
Electronic magnification
Electronic magnification is the magnification of the image displayed on the CCD with the camera.
Display magnification
Monitor magnification is the magnification of the subject being displayed on the monitor through lens imaging
Display magnification = (optical magnification) × (electronic magnification)
Example: Optical magnification = 0.2X, CCD size 1/2 (diagonal length 8mm), display 14〃
Electronic magnification = 14 × 25.4 / 8 = 44.45 (times)
Display magnification = 0.2 × 44.45 = 8.89 (times) (1 inch = 25.4mm)
Field of view
The field of view is the size of the object that can be seen when the lens is connected to the CCD camera
The size of the field of view is: (CCD format size) / (optical magnification)
Example: Optical magnification = 0.2X, CCD 1 / 2〃 (4.8mm long, 6.4mm wide)
Field of view size: length = 4.8 / 0.2 = 24 (mm)
Width = 6.4 / 0.2 = 32 (mm)
Provided by Dehong Technology
Keywords: telecentric lens, industrial lens, camera lens, coaxial light lens, industrial light source, focus lens
attention
Shenzhen Dehong Vision Technology Co., Ltd.
Phone: 183 0666 4155
Fax: 0755-2372-6873
Email: 908450505@qq.com
Website: en.dhkj123.com
Address: 19th Floor, Goldman Sachs Building,
No. 18 Shajing Center Road, Baoan District, Shenzhen