US 7,804,057 B2Granted

Optical substance manipulator

AssigneeKeio University

InventorsYohei Sato, Koichiro Saiki

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Abstract

The invention relates to an optical substance manipulator capable of continuing to apply a continued force of action to moving substances without being limited by the flowing conditions for the substances yet with a wide manipulation margin and with efficiency, thereby continuously carrying out various manipulations such as separation, concentration, mixing, and deflection. Specifically, the invention provides an optical substance manipulator capable of manipulating microscopic particles dispersed in a flowing fluid by means of light pressure, characterized by comprising an optical system that forms multiple linear light-collective areas simultaneously with respect to a fluid that flows on a subject surface (5), and further comprising, in optical paths forming the respective linear light-collective areas, means (CL1), (CL2) adapted to adjust directions of the linear light-collective areas on the subject surface and means (M1), (M2) adapted to adjust positions of the linear light-collective areas.

Claims3

Dependent claims

An optical substance manipulator capable of manipulating microscopic particles dispersed in a flowing fluid by means of light pressure, characterized by comprising an optical system that forms two linear light-collective areas simultaneously with respect to a fluid that flows on a subject surface, and further comprising, in optical paths forming the respective linear light-collective areas, means adapted to adjust directions of the linear light-collective areas on the subject surface, means adapted to adjust positions of the linear light-collective areas, said optical system comprises

light splitter means adapted to split light coming out of one light source into two beams, each beam having a separate optical path,
means adapted to independently adjust each beam for controlling the direction of each of the linear light-collective areas,
means adapted to independently adjust each beam for controlling the position of each of the linear light-collective areas,
light synthesis means adapted to synthesize the light split into two beams, and
an object lens adapted to collect the synthesized light to form the two linear light-collective areas simultaneously on a subject surface, wherein
each linear light-collective area is a light beam having a linear profile as viewed on the subject surface.

3 more elements

Dependencies are inferred from the claim text.