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AssigneeCoulter Electronics, Inc.
InventorsWalter R. Hogg, Albert Brunsting
Estimating the term…
In an apparatus in which particles are passed through an optical sensing zone to measure their radiant energy distribution such as, for example, light scattering characteristics for the purpose of identifying the particles, means and a method are provided for deviating the collected light in accordance with predetermined different paths to a plurality of different photodetecting devices. The deviation is effected independently of collection by optical radiant energy transmitting or reflecting means. The different photodetecting devices enable the measurement of energy directed along the particular path which is identified with that device. The paths are established by the deviating means rather than permitted to evolve by the scattering phenomena themselves whereby the photodetecting devices can be located in convenient arrangements and may be conventional in construction. Different forms of the invention combine optical reflection or refraction for collecting the scattered radiant energy with optical reflection or refraction for deviation to achieve different advantages and results.
A method of measuring the directional distribution properties of the radiant energy of a particle for particle identification or the like which comprises:
The method of making a fresnel element for use in measuring light scattering properties of particles which comprises:
Apparatus for measuring the directional distribution of radiant energy produced by particles for identification or the like of said particles which comprises:
Apparatus for measuring the scattering of radiant energy produced by particles for identification or the like of said particles which comprises:
A composite mirror of multiple reflecting surfaces adapted to receive distributed radiant energy from a source that is directing such distributed radiant energy in a conical solid angle generally along an optical axis toward a focal point remote from said source, the mirror adapted to be disposed with its reflecting surfaces facing said source and arranged to reflect and deviate different geometric zones of the distributed radiant energy away from the focal point in different angles relative to said axis and to confluence thereof at respective separate locations where said confluenced portions of radiant energy from said respective zones can be measured.
Apparatus for measuring the scattering of radiant energy produced by particles for identification or the like of said particles which comprises:
A deviator element for use in an apparatus for measuring polar distribution radiant energy, said element being adapted for receiving a composite beam of distributed radiant energy on one surface, transmitting the radiant energy and deviating different portions of the composite beam in different directions and to different locations where the respective deviated beams can be measured, said element being formed of a plurality of prismatic components each having a geometric relation to a specific geometric portion of the composite beam adapted to be received and said components being joined in unitary form, wherein said element is generally circular, about half of the element being formed of semiannular portions of different radial dimension which are coaxial and the other half being formed of wedge shaped segments centered on the center of the circle.
A deviator element for use in an apparatus for measuring polar distribution radiant energy, said element being adapted for receiving a composite beam of distributed radiant energy on one surface, transmitting the radiant energy and deviating different portions of the composite beam in different directions and to different locations where the respective deviated beams can be measured, said element being formed of a plurality of prismatic components each having a geometric relation to a specific geometric portion of the composite beam adapted to be received and said components being joined in unitary form, wherein the respective components include a plurality of annuli of different radial dimension arranged coaxially, and wherein the angle of deviation of all components is the same but the axes of the deviated beams are pointed in different directions circumferentially spaced around the central element axis.
A deviator element for use in an apparatus for measuring polar distribution radiant energy, said element being adapted for receiving a composite beam of distributed radiant energy on one surface, transmitting the radiant energy and deviating different portions of the composite beam in different directions and to different locations where the respective deviated beams can be measured, said element being formed of a plurality of prismatic components each having a geometric relation to a specific geometric portion of the composite beam adapted to be received and said components being joined in unitary form, wherein the prismatic components are annuli of different radial dimension arranged coaxially with the radial width dimension of said respective annuli decreasing from the periphery toward the center.
A deviator element for use in an apparatus for measuring polar distribution radiant energy, said element being adapted for receiving a composite beam of distributed radiant energy on one surface, transmitting the radiant energy and deviating different portions of the composite beam in different directions and to different locations where the respective deviated beams can be measured, said element being formed of a plurality of prismatic components each having a geometric relation to a specific geometric portion to the composite beam adapted to be received and said components being joined in unitary form, wherein the prismatic components are annuli of different radial dimension arranged coaxially with the radial width dimension of said respective annuli decreasing from the periphery toward the center, all the components being dimensionally based upon the same angle of deviation but are oriented to point the axes of the deviated beams emerging therefrom in different directions circumferentially spaced around the central element axis, and wherein each annulus is formed of a plurality of different segments arranged side by side circumferentially.
Method of making a deviator element for use in measuring radiant energy directional distribution properties of particles which comprises:
Dependencies are inferred from the claim text.