Guilin Microtech Optical Instrument Co., Ltd. (MTO)
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                                       Double telecentric lens mean the entrance pupil and the exit pupil are in the infinity , it can configured with thecorresponding telecentric illumination. Using telecentric lens imaging to measure , it do not cause measurement error while  something change from  the depth of field , it is especially suitable for precision linear dimension measurement, and it is a key component of  the precision measurement system of machine vision technology .
| Model | Mag. | WD | DOF | Resolution | Distortion | Telecentric Degrees | FOV(mm) | The largest compatible CCD | ||
| 0.3X | 110mm | 4.4mm | 11.2μm | 0.1% | 0.04° | 12X16 (1/3"Camera) | 16X21.3(1/2"Camera) | —— | 1/2" | |
| 0.3X | 185mm | 6.7mm | 16.8μm | 0.1% | 0.05° | 12X16 (1/3"Camera) | 16X21.3(1/2"Camera) | —— | 1/2" | |
| 0.5X | 185mm | 2.3mm | 8.4μm | 0.01% | 0.04° | 7.2X9.6 (1/3"Camera) | 9.6X12.8(1/2"Camera) | 13.2X17.6(2/3"Camera) | 2/3" | |
| 0.6X | 185mm | 1.67mm | 8.4μm | 0.05% | 0.04° | 6X8 (1/3"Camera) | 8X10.67(1/2"Camera) | 11X14.67(2/3"Camera) | 2/3" | |
