Patent
Ellipsoid-conic radiation collector and method
Walter R Hogg,Albert Brunsting +1 more
TLDR
In this article, a radiation collector is used for counting and analyzing a flow of dilute particulate material, such as blood cells, sperm cells and the like, through the use of light detection.Abstract:
Disclosed is a radiation collector apparatus and method primarily for counting and analyzing a flow of dilute particulate material, such as blood cells, sperm cells and the like, through the use of light detection. The radiation collector apparatus comprises a reflector chamber having an ellipsoidal reflector surface with a pair of elipsoidal foci defining a first focus, f 11 , and second focus, f 12 , and a second reflector surface with a primary focus, f 21 , positioned at the same point as focus f 12 , and a secondary focus, f 22 . The second reflector surface has the configuration of one of the conic sections of revolution. In operation the radiation collector apparatus is provided with an intensifed beam of light and a stream of particulate material aligned to intersect the intensifed beam of light at focus f 11 . Detectable light signals, after two reflections, are received in a focused beam by a photosensitive detector.read more
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Patent
Apparatus, methods and processes for sorting particles and for providing sex-sorted animal sperm
Gary Durack,Jeffrey D. Wallace,Gary P. Vandre,Lon A. Westfall,Jeremy T. Hatcher,Niraj V. Nayak +5 more
TL;DR: In this article, a multi-channel system for classifying particles in a mixture of particles according to one or more characteristics including a common source of electromagnetic radiation for producing a beam of radiation and a beam splitter for producing multiple beams of radiation for each interrogation location associated with each flow channel of the system.
Patent
System for analyzing particles using multiple flow cytometry units
Gary Durack,Jeffrey D. Wallace,Gary P. Vandre,Lon A. Westfall,Jeremy T. Hatcher,Niraj V. Nayak +5 more
TL;DR: In this article, a multichannel system for classifying particles according to one or more characteristics of the particles includes a plurality of flow cytometry units, each of which is operable to classify particles in a mixture of particles by interrogating a stream of fluid containing particles using a beam of electromagnetic radiation.
Patent
Method of cryopreserving selected sperm cells
TL;DR: In this paper, a method of cryopreserving sperm that have been selected for a specific characteristic was proposed, such as sex-type, and used for artificial insemination or in vitro fertilization.
Patent
Improved particle sensor and method for assaying a particle
TL;DR: In this article, a particle sensor (10) has a mirror cavity (79) unobstructed by masks and the like, and a light detector (75) is at the mirror secondary focal point (16) and well outside the mirror cavity.
Patent
Method and apparatus for guiding and collecting light in photometry or the like
TL;DR: In this article, a method and an apparatus for guiding and collecting light which arises or is reflected from a sample to be measured is described, which is used primarily in fluorimetry, nephelometry, luminometry and the like.
References
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Patent
Ellipsoidal cell flow system
Gary C. Salzman,P. F. Mullaney +1 more
TL;DR: In this paper, a system incorporating an ellipsoidal flow chamber having light reflective walls for low level light detection in practicing cellular analysis is described, where a controlled flow of cells simultaneously passes through this focus so that the laser light impinges on the cells and is modulated by the cells.