Light-weight high resolution viewer

A magnification loupe carried by a user wearable device, comprising:

• a housing having a first end with a first aperture for supporting an eyepiece lens, and a second end with a second aperture for supporting an objective lens;
• an eyepiece lens disposed in said first end of said housing;
• and
• an objective lens disposed in said second end of said housing;
• said objective lens having a non-circular shape, wherein at least two oppositely disposed arcuate first peripheral edges are defined by a first radius extending from a first center, and wherein at least two oppositely disposed arcuate second peripheral edges are defined by at least one second radius extending from at least a second center not coincident with said first center, said second radius having a length different from said first radius;
• said eyepiece lens comprising a single lens element;
• said objective lens comprising two lens elements;
• wherein said eyepiece lens and said objective lens are constructed and arranged according to the following parameters:
• Maximum
• Element
• Glass
• ηd
• νd
• Radius
• Thickness
• Diameter
• Sep.
• I
• Schott NSK5
• 1.589
• 61.3
• R1 = 98.19
• 3.0
• 25.4
• R2 = 98.19
• II
• Schott NBALF4
• 1.580
• 53.9
• R3 = 52.10
• 1.5
• D1 = 13.00
• S = 4.1
• R4 = 20.16
• D2 = 13.25
• III
• O'Hara STIH23
• 1.785
• 26.3
• R5 = 85.68
• 1.8
• 26.15
• S = 13.59
• R6 = 43.17
• IV
• Schott NBK7
• 1.517
• 64.2
• R7 = 43.17
• 7.6
• 26.15
• R8 = 22.39
• wherein the radius, thickness, and separation dimensions are given in millimeters;
• Roman numerals identify the lens elements in their respective order from an eyepoint side to an object side and element I is a representative lens of the user wearable device;
• ηd represents the refractive index of each element;
• νd is the abbe dispersion number;
• R1–R8 represent the radii of respective refractive surfaces in order, from the eyepoint side to the object side;
• D1 and D2 represent the maximum clear lens aperture diameters of parent lens elements;
• and S1, S2 represent the air space between the elements, measured along an optical centerline.

A magnification loupe carried by a user wearable device, comprising:

• a housing having a first end with a first aperture for supporting an eyepiece lens, and a second end with a second aperture for supporting an objective lens;
• a single element eyepiece lens disposed in said first end of said housing;
• and
• a two element objective lens disposed in said second end of said housing;
• said eyepiece lens and said objective lens constructed and arranged according to the following parameters:
• Maximum
• Element
• Glass
• ηd
• νd
• Radius
• Thickness
• Diameter
• Sep.
• I
• Schott NSK5
• 1.589
• 61.3
• R1 = ∞
• 2.2
• 12.0
• R2 = ∞
• II
• Schott NBK7
• 1.517
• 64.2
• R3 = 36.49
• 1.5
• 12.0
• S1 = 0.6
• R4 = 18.48
• III
• Schott NSF56
• 1.805
• 25.4
• R5 = 85.68
• 1.6
• D1 = 22.24
• S2 = 14.46
• R6 = 39.71
• D2 = 23.60
• IV
• Schott NBK7
• 1.517
• 64.2
• R7 = 39.71
• 6.65
• D3 = 23.60
• R8 = 21.55
• D4 = 23.60
• wherein the radius, thickness, and separation dimensions are given in millimeters;
• Roman numerals identify the lens elements in their respective order from an eyepoint side to an object side and element I is a representative correction lens;
• ηd represents the refractive index of each element;
• νd is the abbe dispersion number;
• R1–R8 represent the radii of respective refractive surfaces in order, from the eyepoint side to the object side;
• D1 –D4 represent the maximum clear lens aperture diameters of parent lens elements;
• and S1, S2 represent the air space between the elements, measured along an optical centerline.

A magnification loupe carried by a user wearable device, comprising:

• a housing having a first end with a first aperture for supporting an eyepiece lens, and a second end with a second aperture for supporting an objective lens;
• a single element eyepiece lens disposed in said first end of said housing;
• and
• a two element objective lens disposed in said second end of said housing;
• said eyepiece lens and said objective lens constructed and arranged according to the following parameters:
• Maximum
• Element
• Glass
• ηd
• νd
• Radius
• Thickness
• Diameter
• Sep.
• I
• Schott NSK5
• 1.589
• 61.3
• R1 = 98.19
• 3.0
• 25.4
• R2 = 98.19
• II
• Schott NBALF4
• 1.580
• 53.9
• R3 = 52.10
• 1.5
• D1 = 13.00
• S1 = 4.1
• R4 = 20.16
• D2 = 13.25
• III
• O'Hara STIH23
• 1.785
• 26.3
• R5 = 85.68
• 1.8
• 26.15
• S2 = 13.59
• R6 = 43.17
• IV
• Schott NBK7
• 1.517
• 64.2
• R7 = 43.17
• 7.6
• 26.15
• R8 = 22.39
• wherein the radius, thickness, and separation dimensions are given in millimeters;
• Roman numerals identify the lens elements in their respective order from an eyepoint side to an object side;
• ηd represents the refractive index of each element;
• νd is the abbe dispersion number;
• R1–R8 represent the radii of respective refractive surfaces in order, from the eyepoint side to the object side and element I is a representative lens of the user wearable device;
• D1 and D2 represent the maximum clear lens aperture diameters of parent lens elements;
• and S1, S2 represent the air space between the elements, measured along an optical centerline.