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US 7,889,443 B2Granted
Camera, handlens, and microscope optical system for imaging and coupled optical spectroscopy
OwnerGreg S. Mungas, John Boynton +2inventors
InventorsGreg S. Mungas, John Boynton, Cesar A. Sepulveda, Yekta Gursel
Life of this patent
Estimating the term…
Abstract
An optical system comprising two lens cells, each lens cell comprising multiple lens elements, to provide imaging over a very wide image distance and within a wide range of magnification by changing the distance between the two lens cells. An embodiment also provides scannable laser spectroscopic measurements within the field-of-view of the instrument.
Claims11
An optical system comprising:
- a first lens cell comprising in a sequential order
- a positive meniscus lens element;
- a negative meniscus lens element;
- a biconcave lens element;
- a first biconvex lens element;
- and
- a second biconvex lens element;
- and
- a second lens cell comprising in a sequential order
- a biconcave lens element;
- and
- a biconvex lens element,
- wherein
- the negative meniscus and biconcave lens elements of the first lens cell are separated by a first distance to within 25% of 18.594s mm, where s is some positive-valued scale factor;
- and
- the biconcave and biconvex lens elements of the second lens cell are separated by a second distance to within 25% of 15.01s mm.
13 more elements
An optical system comprising:
- a first lens cell comprising in a sequential order
- a positive meniscus lens element;
- a negative meniscus lens element;
- a biconcave lens element;
- a first biconvex lens element;
- and
- a second biconvex lens element;
- and
- a second lens cell comprising in a sequential order
- a biconcave lens element;
- and
- a biconvex lens element,
- wherein
- the negative meniscus and biconcave lens elements of the first lens cell are separated by a first distance to within 10% of 18.594s mm, where s is some positive-valued scale factor;
- and
- the biconcave and biconvex lens elements of the second lens cell are separated by a second distance to within 10% of 15.01s mm.
13 more elements
An optical system comprising:
- a first lens cell comprising in a sequential order
- a positive meniscus lens element having an index of refraction to within 25% of 1.52 and an Abbe number to within 25% of 59.3;
- a negative meniscus lens element having an index of refraction to within 25% of 1.52 and an Abbe number to within 25% of 59.3;
- a biconcave lens element having an index of refraction to within 25% of 1.75 and an Abbe number to within 25% of 35.3;
- a first biconvex lens element having an index of refraction to within 25% of 1.44 and an Abbe number to within 25% of 95.0;
- and
- a second biconvex lens element having an index of refraction to within 25% of 1.52 and an Abbe number to within 25% of 59.3;
- and
- a second lens cell comprising in a sequential order
- a biconcave lens element having an index of refraction to within 25% of 1.52 and an Abbe number to within 25% of 59.3;
- and
- a biconvex lens element having an index of refraction to within 25% of 1.52 and an Abbe number to within 25% of 59.3;
- wherein:
- the negative meniscus and biconcave lens elements of the first lens cell are separated by a first distance to within 25% of 18.594s mm, where s is some positive-valued scale factor;
- the biconcave and biconvex lens elements of the second lens cell are separated by a second distance to within 25% of 15.01s mm;
- the positive meniscus lens element and the negative meniscus lens element are separated by a third distance to within 25% of s mm;
- the first biconvex lens element and the second biconvex lens element are separated by the third distance;
- the positive meniscus lens element of the first lens cell has a first surface with a radius of curvature to within 25% of the range of 21.60s mm, and has a second surface with a radius of curvature to within 25% of 10.44s mm;
- the negative meniscus lens element of the first lens cell has a first surface with a radius of curvature to within 25% of the range of 8.17s mm, and has a second surface with a radius of curvature to within 25% of 10.97s mm;
- the biconcave lens element of the first lens cell has a first surface with a radius of curvature to within 25% of the range of 38.63s mm, and has a second surface with a radius of curvature to within 25% of 44.52s mm;
- the first biconvex lens element of the first lens cell has a first surface with a radius of curvature to within 25% of the range of 50.81s mm, and has a second surface with a radius of curvature to within 25% of 16.95s mm;
- the second biconvex lens element of the first lens cell has a first surface with a radius of curvature to within 25% of the range of 21.60s mm, and has a second surface with a radius of curvature to within 25% of 10.44s mm;
- the biconcave lens element of the second lens cell has a first surface with a radius of curvature to within 25% of the range of 59.21s mm, and has a second surface with a radius of curvature to within 25% of 12.88s mm;
- and
- the biconvex lens element of the second lens cell has a first surface with a radius of curvature to within 25% of the range of 178.78s mm, and has a second surface with a radius of curvature to within 25% of 24.53s mm.
22 more elements
Dependencies are inferred from the claim text.