Oil immersion type microscope objective

Claim 2

An apochromatic microscope objective having a magnification of substantially 100X and a numerical aperture of substantially 1.30 for forming an image of an object plane, said image being well corrected for chromatic aberrations over the entire visible spectrum and for spherical aberrations, coma, astigmatism, and curvature of image field, said objective comprising: a front plano-convex lens member I; a second concavo-convex lens member II; said front and second members forming a doublet; a third concavo-convex lens member III; a fourth convex-concavo lens member IV; a fifth double convex lens member V; said fourth and fifth members forming a doublet; a sixth double concave lens member VI; a seventh double convex lens member VII; said sixth and seventh members forming a doublet; an eighth double convex lens member VIII; a ninth double concave lens member IX; said eighth and ninth members forming a doublet; a tenth double convex lens member X; an eleventh concavo-convex lens member XI; said tenth and eleventh members forming a doublet; a twelfth double concave lens member XII; a thirteenth double convex lens member XIII; said twelfth and thirteenth members forming a doublet; all of said lens members being axially aligned; and the parameters of lens radii (R1 - R20), lens thicknesses (T1 T13), axial spaces among lens element and object plane (S1 S7), refractive indices (ND1 - ND13), and Abbe numbers ( gamma 1 - gamma 13), being determined by the following relationship:

Claim 3

An apochromatic microscope objective having a magnification of substantially 100X and a numerical aperture of substantially 1.30 for forming an image of an object plane, said image being well corrected for chromatic aberrations over the entire visible spectrum and for spherical aberrations, coma, astigmatism, and curvautre of image field, said objective comprising: a front plano-convex lens member I; a second concavo-convex lens member II; said front and second members forming a doublet; a third concavo-convex lens member III; a fourth convex-concavo lens member IV; a fifth double convex lens member V; said fourth and fifth members forming a doublet; a sixth double concave lens member VI; a seventh double convex lens member VII; said sixth and seventh members forming a doublet; an eighth double convex lens member VIII; a ninth double concave lens member IX; said eighth and ninth members forming a doublet; a tenth double convex lens member X; an eleventh concavo-convex lens member XI; said tenth and eleventh members forming a doublet; a twelfth double concave lens member XII; a thirteenth double convex lens member XIII; said twelfth and thirteenth members forming a doublet; all of said lens members being axially aligned; and the parameters of lens radii (R1 - R20), lens thicknesses (T1 -T13), axial spaces among lens element and object plane (S1 -S7), refractive indices (ND1 - ND13), and Abbe numbers ( gamma 1 - gamma 13), being determined by the following relationship:

Claim 4

An apochromatic microscope objective having a magnification of substantially 100X and a numerical aperture of substantially 1.30 for forming an image of an object plane, said image being well corrected for chromatic aberrations over the entire visible spectrum and for spherical aberrations, coma, astigmatism, and curvautre of image field, said objective comprising: a front plano-convex lens member I; a second concavo-convex lens member II; said front and second members forming a doublet; a third concavo-convex lens member III; a fourth convex-concavo lens member IV; a fifth double convex lens member V; said fourth and fifth members forming a doublet; a sixth double concave lens member VI; a seventh double convex lens member VII; said sixth and seventh members forming a doublet; an eighth double convex lens member VIII; a ninth double concave lens member IX; said eighth and ninth members forming a doublet; a tenth double convex lens member X; an eleventh concavo-convex lens member XI; said tenth and eleventh members forming a doublet; a twelfth double concave lens member XII; a thirteenth double convex lens member XIII; said twelfth and thirteenth members forming a doublet; all of said lens members being axially aligned; and the parameters of lens radii (R1 - R20), lens thicknesses (T1 -T13), axial spaces among lens element and object plane (S1 -S7), refractive indices (ND1 - ND13), and Abbe numbers ( gamma 1 - gamma 13), being determined by the following relationship:

Claim 5

A standardized component of an achromatic-apochromatic microscope objective including: a front plano-convex lens member I; a second concavo-convex lens member II; said front and second members forming a doublet; a third concavo-convex lens member III; a fourth convex-concavo lens member IV; a fifth double convex lens member V; said fourth and fifth members forming a doublet; all of said lens members being axially aligned; the parameters of lens radii (R), lens thicknesses (T), axial spaces among lens elements and object plane (S), refractive indices (ND), and Abbe numbers ( gamma ), being determined by the following relationship:

Claim 6

A standardized component of an achromatic-apochromatic microscope objective including: a front plano-convex lens member I; a second concavo-convex lens member II; said front and second members forming a doublet; a third concavo-convex lens member III; a fourth convex-concavo lens member IV; a fifth double convex lens member V; said fourth and fifth members forming a doublet; all of said lens members being axially aligned; the parameters of lens radii (R), lens thicknesses (T), axial spaces among lens elements and object plane (S), refractive indices (ND), and Abbe numbers ( gamma ), being determined by the following relationship:

Claim 7

A microscope objective as defined in claim 3 and further including: a sixth double concave lens member VI; a seventh double convex lens member VII; said sixth and seventh members forming a doublet; an eighth double convex lens member VIII; a ninth double concave lens member IX; said eighth and ninth members forming a doublet; a tenth double convex lens member X; an eleventh concavo-convex lens member XI; said tenth and eleventh members forming a doublet; a twelfth double concave lens member XII; a thirteenth double convex lens member XIII; said twelfth and thirteenth members forming a doublet; the parameters being determined by the following relationship:

Claim 8

A microscope objective having a five-member standardized component useful in both apochromatic and achromatic objectives, said standardized component consisting of: a front plano-convex lens element; a second concavo-convex lens element; said front and second element forming a doublet; a third concavo-convex lens element; a fourth convex-concavo lens element; a fifth double convex lens element; said fourth and fifth elements forming a doublet; all of said lens elements being axially aligned.

Claim 9

A microscope objective having a five-member standardized component useful in both apochromatic and achromatic objectives, said standardized component consisting of: a front plano-convex lens element; a second concavo-convex lens element; said front and second element forming a doublet; a third concavo-convex lens element; a fourth convex-concavo lens element; a fifth double convex lens element; said fourth and fifth elements forming a doublet; all of said lens elements being axially aligned.

Claim 10

A microscope objective including a component defined in claim 5 and further including: a sixth double-concave lens element; a seventh double convex lens element; said sixth and seventh elements forming a doublet; an eighth double convex lens element; a ninth double concave lens element; said eighth and ninth elements forming a doublet; said microscope objective being achromatic in character and being well corrected for spherical and chromatic aberrations, coma, astigmatism, and curvature of image field.

Claim 11

A microscope objective including the component defined in claim 5 and further including: a sixth double-concave lens element; a seventh double convex lens element; said sixth and seventh elements forming a doublet; an eighth double convex lens element; a ninth double concave lens element; said eighth and ninth elements forming a doublet; a tenth double convex lens element; an eleventh concavo-convex lens element; said tenth and eleventh elements forming a doublet; a twelfth double concave lens element; a thirteenth double convex lens element; said twelfth and thirteenth elements forming a doublet; said microscope objective being apochromatic in character and being well corrected for chromatic aberrations over the entire visible spectrum and for spherical aberrations, coma, astigmatism, and curvature of image field.