ACHROMATIC MICROSCOPE OBJECTIVE Russian patent published in 2008 - IPC G02B21/02 

FIELD: optics.

SUBSTANCE: achromatic microscope objective can be used at designing of microscope objectives with achromatic correction for equipping large series of microscopes. Achromatic microscope objective has three components. First component has to be combination of N positive single lenses; second component has to be achromatic lens with single surface of glued part turned ether to area of image or objects; third component is disposed behind second component and it made in form of single meniscus turned with its concavity to area of images. Number N of first components belongs to o to 3 range depending on numeric aperture A_ob of objective and on value of linear magnitude of objective V_ob. Relation of radiuses of meniscus is described by relation of 1,0≤R1_m/R2_m≤1,5 and number of N first components is described by relation of N≈(2f'_obA_ob+1)/f'_ob, where f'_ob=f'_tl/V_ob, f'_ob is focal length of objective, f'_tb is focal length of tube lens.

EFFECT: improved information capacity; improved aberration correction.

1 dwg