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US 8,817,255 B2Granted
Apparatus and method for irradiating a scattering medium
AssigneeCanon Kabushiki Kaisha
InventorTakahiro Masumura
Life of this patent
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Abstract
An apparatus includes a light source configured to emit an electromagnetic wave; a spatial light modulator configured to modulate a wavefront of the electromagnetic wave to irradiate a sample; a plate with an aperture; a lens unit configured to set a focal point in the sample; a detector configured to detect light coming from the focal point of the sample through the aperture; and a controller configured to control the spatial light modulator based on the detected light by the detector.
Claims16
An apparatus comprising:
- a light source configured to emit an electromagnetic wave;
- a spatial light modulator configured to modulate a wavefront of the electromagnetic wave to irradiate a sample;
- a confocal system including a plate with an aperture and a lens unit configured to set a focal point in the sample;
- a photodetector configured to detect a signal corresponding to an electromagnetic wave coming from the focal point of the sample through the confocal system;
- and
- a controller configured to control the spatial light modulator to optimize the wavefront of the electromagnetic wave in such a way that the signal detected by the photodetector is enhanced,
- wherein the controller is configured to control the light source in such a way that a power of the electromagnetic wave whose wavefront is optimized is different from a power of the electromagnetic wave whose wavefront is not optimized, and
- wherein the controller is configured to reconstruct an image using a signal generated in response to the irradiation of an electromagnetic wave whose wavefront is optimized and power is different from the power of the electromagnetic wave whose wavefront is not optimized.
5 more elements
An apparatus comprising:
- a light source configured to emit an electromagnetic wave;
- a spatial light modulator configured to modulate a wavefront of the electromagnetic wave to irradiate a sample;
- a lens unit configured to set a focal point in the sample;
- a plate with an aperture which forms a confocal system with the lens;
- a photodetector configured to detect a signal corresponding to an electromagnetic wave coming from the focal point of the sample through the confocal system;
- and
- a controller configured to control the spatial light modulator to optimize the wavefront of the electromagnetic wave in such a way that the signal detected by the photodetector is enhanced,
- wherein the controller is configured to reconstruct an image using a photoacoustic signal generated in response to the irradiation of an electromagnetic wave whose wavefront is optimized.
5 more elements
Dependencies are inferred from the claim text.