Hamamatsu-photonics K.k.

Makoto Hosoda

Shinichiro Aoshima

Masatoshi Fujimoto

Yutaka Tsuchiya

Tamiki Takemori

In an imaging apparatus, a detection sectiondetects a beam Lhaving passed through an aperturein a first direction and a location designation beam Lhaving passed through the aperturein the opposite direction is made incident to a position (x,y) in a first light image IMon an image pickup surface corresponding to a specific position (x,y) in a second light image IMwhereby the result of detection of the beam Ldetected at the detection sectionindicates data at a specific position in an incoming light image designated by the location designation beam L, regardless of whether there is a mechanical error in movement of the aperture

Image pickup device

A light pulse from an ultrashort pulse light sourceis split by a beam splitterand guided, to a detection medium, as an excitation pulse and probe pulse having respective predetermined linearly polarized states by an excitation optical systemand probe optical system, respectively. A light track region which is generated in the detection mediumby incidence of the excitation pulse, and in which the refractive index is changed by a nonlinear optical effect, is irradiated with the probe pulse. Of components which have passed through the detection medium, a probe pulse component whose polarized state has changed through the light track region is detected by a cameravia an analyzerin a photodetection part. This realizes a light track observation apparatus capable of directly observing the light track of an excitation pulse.

Light track observing device

A fluorescence component that passes through a region of a detection medium where a change in refractive index has been induced through a nonlinear optical effect produced in the detection medium by a gate pulse is observed as a fluorescence image by utilizing a change in polarization state. By observing the change in position of the fluorescence image while correlating with the change over time in the fluorescence, a fluorescence lifetime measuring apparatus is realized with which the change over time in the fluorescence, in particular the fluorescence lifetime, can be measured efficiently with high temporal resolution.

Instrument for measuring lifetime of fluorescene

Operation results for all combinations of input optical signal values to be operated are previously determined and substantially parallel light beams reflecting the operation results for all combinations are generated. Selectors for selecting transmission area of the input light beams in accordance with digital information born by optical signals are arranged for the respective optical signals along the direction of propagation of the light beams. Through the logically cascade-connected selectors, an optical signal corresponding to a combination of current input optical signals is selected from the operation results for all combinations.

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Hamamatsu, Japan

Makoto Hosoda