Diffraction-gated real-time ultra-high-speed mapping photography system and method
AssigneeInstitut National De La Recherche Scientifique
InventorsJinyang LIANG, Xianglei LIU
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Abstract
A diffraction-gated real-time ultrahigh-speed mapping photography method and system, by probing a transient scene with a single-wavelength continuous-wave beam, imaging the probed transient scene, generating different replicated images of the transient scene at spatially separated positions by using a 4f imaging system and a spatial light modulator, and rescaling the images size onto a low-speed CMOS or CCD camera for example, synchronizing with the flipping of the spatial light modulator for recording images of the transient scene.
Claims20
A high-speed imaging system, comprising:
- a continuous-wave light source;
- a first imaging unit;
- a second imaging;
- a time gate;
- a third imaging system;
- and
- a sensor, synchronized with the time gate;
- wherein a single-wavelength probing beam from said light source is used to probe a transient scene, the first imaging system collects the transient scene as probed by the probing beam and forms an image of the transient scene;
- the second imaging unit generates a first Fourier transformation;
- the time gate generates different replicated images of the transient scene at spatially separated positions as a sequence of images frames;
- and the third imaging system relays the different replicated images to the sensor, for recording images of the transient.
A high-speed imaging method, comprising probing a transient scene using a single-wavelength continuous wave beam;
- collecting the transient scene as probed by the probing beam and forming an image of the transient scene;
- generating a first Fourier transformation, time-gating the image, thereby generating frames of the transient scene at spatially separated positions;
- relaying the time-gated frames of the transient scene to a sensor synchronized with said time-gating;
- and recording images.
Dependencies are inferred from the claim text.