Other

Cytyc Corporation

US Genomics, Inc.

George H Seward

David C Johnson

Gregory R Yantz

Jonathan W Larson

Jeffrey R Krogmeier

A tube lens includes a singlet and a doublet with a long front tube length between a lens stop and the tube lens. The front tube length is 1.0 to 1.5 times an effective focal length of the tube lens. The front tube length provides sufficient space for an optical platform, a folding mirror, and a telescope. The telescope rotates between a 2&#xd7; mode with front and back doublets and a 1&#xd7; mode with a clear aperture. The field angle of the tube lens is 4.0 degrees. Specific glass types correct the lateral color in a system for digital pathology with a white LED and a color CCD sensor. The system for digital pathology further includes an objective lens with a numerical aperture at 0.50-0.55, and a Kohler illumination system with a numerical aperture of critical illumination at 0.75-0.85 times the numerical aperture of the objective lens.

Tube lens with long front tube length within optical system for digital pathology

A lens arrangement with an achromatic homogenizer and collimator for multiple LEDs. The lens arrangement combines the hemispherical emittance profiles from one or more LEDS into a collimated beam without chromatic aberration. The lens arrangement has one or more LEDs, a homogenizer, a solid lightpipe, an internal parabolic reflector, a retroreflector, and a refractor. The emittance profiles of the LEDs are distributed evenly over space and angle by multiple reflections inside a diffusely reflecting cavity of the homogenizer. The internal reflector has a numerical aperture of 1.0, which defines a hemispherical solid angle of collection within air. The retroreflector directs rays away from the LEDs. The retroreflection permits space for the electronics of high radiance LEDs. The refractor converts the retroreflector rays in a plurality of shapes. The lens is optimally designed for applications with high standards for color mixing, uniformity, and efficient conversion of electrical power into light.

Achromatic homogenizer and collimator for LEDs

A lens system with a first group having a positive meniscus lens and a sensor. The optical distance between the front surface of the first group and the sensor can be not greater than the height of the sensor times the image F-number, which may alternatively be referred to as the working F-number. A second group can be disposed adjacent to the front focal point of the first group, and a lens-stop can be disposed adjacent to the second group. A third group can be disposed midway between the lens-stop and the object field of the first and second groups. The image F-number can be 2.8 or greater. The first group can have a doublet formed by a first lens that is plano convex and a second lens that is plano concave. The second group can have a first, plano convex lens and a second, biconvex lens forming a doublet with a third, plano concave lens.

Spectroscopy lens for telecentric sensor

An isotropic illuminator is described, including a relay lens configured to focus a source image propagated from a source and a lightpipe having an entrance aperture and an exit aperture. The source image is aligned by a folding element to fill the entrance aperture and the lightpipe propagating the source image provides substantially uniform illumination from the exit aperture to a field stop. Focusing a source image propagated from a source, aligning the source image to fill an entrance aperture, and propagating the source image to provide substantially uniform illumination from an exit aperture to a field stop is also described. A specimen review system including a specimen stage configured to receive specimens for viewing, a source of illumination providing illumination to the specimen stage, and a review scope configured to review specimens on the specimen stage is also described.

Isotropic illumination

The invention relates to methods and systems for detecting and or analyzing an agent in a sample with a chip having optical components incorporated therein.

Systems and methods for measurement optimization

A parcentric objective is described, including an objective lens configured to receive an incident ray from a field of view and to translate the incident ray into a translated incident ray, the objective lens substantially aligned across an optical axis, and a wedge prism configured to receive and deflect the translated incident ray into an exiting ray, the wedge prism rotated about the optical axis. A specimen review system is also described, including a specimen stage configured to receive specimens for viewing, a source of illumination providing illumination to the specimen stage, a review scope configured to review specimens positioned on the specimen stage, the review scope comprising a parcentric objective configured to resolve a field of view of the specimen stage.

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Arlington, MA, United States of America

George H Seward