工业镜头

News

Contact us

Shenzhen Dehong Vision Technology Co., Ltd.

Phone: 183 0666 4155

Fax: 0755-2372-6873

Email: 908450505@qq.com

Website: www.dhkj123.com

          www.dehong123.com

               en.dhkj123.com

Address: Goldman Sachs Building, No. 18 Shajing

 Center Road, Baoan District, Shenzhen



Introduction to the magnification of optical prisms-adjustable focus lens

Your current location: Home >> News >> technical knowledge

Introduction to the magnification of optical prisms-adjustable focus lens

Date:2017-02-27 Author: Click:

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)


              可调焦镜头

Provided by Dehong Technology


Keywords: telecentric lens, industrial lens, camera lens, coaxial light lens, industrial light source, focus lens


Tag:可调焦镜头

Browse:

er.png

attention

contact us

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


service

183 0666 4155

Service Hotline

二维码

扫描二维码

分享