| | BX51M | BX51 | BX61 |
| Optical system | | UIS optical system infinity-corrected |
| Objectives | UIS objectives |
| Eyepieces | UIS eyepieces |
| Microscope frame | Illumination | Reflected | Reflected/transmitted |
Built-in 12V100W light source
Light preset switch
LED voltage indicator | Built-in 12V100W light sourceLight preset switchLED voltage indicatorReflected/transmitted changeover switch | External 12V100W light sourceLight preset switchLED voltage indicatorReflected/transmitted changeover switch |
| Focus | Stroke 25mmFine stroke per rotation 100µmMinimum graduation 1µmWith upper limit stopper, torque adjustment for coarse handle | Motorized focusing
Stroke 25mm
Minimum graduation 0.01µm |
| Maximum sample height | 65mm w/o spacer | 25mm w/o spacer |
| Observation tubes | Widefield
F.N. 22 | Inverted: binocular, trinocular, tilting binocular
Erect: trinocular, tilting binocular |
| Super widefieldF.N. 26.5 | Inverted: trinocular
Erect: trinocular, tilting binocular |
| Reflected light illumination | BF etc. | BX-RLA2100W halogen high intensity burner, fiber illuminator mountableBF/DF/DIC/KPOFS, AS with centering mechanism, BF/DF interlocking ND filter | BX-RLAAMotorized BF/DF changeoverMotorized AS |
| Reflected fluorescence | BX-URA2100W mercury lamp, 75W xenon lamp50W metal halide lamp6position mirror unit turret standard: WB, WG, WU+BF etcwith FS, AS, with centering mechanism, with shutter mechanism | BX-RFAAMotorized 6 position turretBuilt-in motorized shutterWith FS, AS |
| Transmitted light | - | 100W halogen
Abbe/long working distance condensers
Built-in transmitted light filters LBD, ND25, ND6 |
| Revolving nosepieces | For BF | Sextuple, centering sextuple, sextuple motorized sextuple: optional | Motorized sextuple, centering quintuple |
| For BF/DF | Quintuple, centering quintuple, sextuple motorized sextuple: optional | Motorized quintuple |
| Stages | Coaxial left right handle stage:76X⊙52Ymm, with torque adjustment
Large-size coaxial left right handle stage: 110X⊙105Ymm, with lock mechanism in Y axis |
