Tamron 20HC Leaflet

For High Quality Machine Vision 

 

 

 

 

 Machine Vision Lens (f=25mm) 

P/N 

                                  20HC 

CCD size 

                                     2/3” 

Mount 

                                  C mount 

Focal length 

                                   25mm 

Aperture range  

                                   1.6- 16                    

2/3” 

                               20.0 x 15.0 

1/2” 

                                14.6 x 11.0 

Angle of View 

(horizontal x 
vertical) 

1/3” 

                                  11.0 x 8.2 

Focusing range 

                               0.21m-infinity 

Focus 

                                Manual w/lock          

Operation 

Iris 

                                Manual w/lock 

Filter size  

                               M25.5 P=0.5mm 

Back focus (in air) 

                                   11.60mm 

Exit Pupil Position 

                                   -19.59mm 

1

st

 Optical Principal Point 

                                    17.56mm 

2

nd

 Optical Principal Point 

                                   -13.41mm 

Distance between 1

st

 & 2

nd

 

                                    -10.12mm 

Front 

                                      16mm 

Effective  

Diameter 

Rear 

                                      10.8mm 

Optical Construction 

                            4 groups / 4 elements 

Distortion 

                                        0% 

Overall Length 

                                    25.5mm(INF) 

Maximum Diameter 

                                      30.5mm 

Weight 

                                       40g 

Operating Temperature 

                                    -5 + 50C