US 2025/0027875 A1 · OPTICAL IMAGING DEVICE

Abstract

An optical imaging device includes a pulse generator including a pulse generating device configured to generate pulse lasers and a pulse expander configured to receive a pulse laser from the pulse generating device, and generate a broadened pulse laser by expanding a spectrum and width of the received pulse laser, an optical assembly including an objective lens configured to receive the broadened pulse laser and pass the received broadened pulse laser to a target object, and a light receiver including a light receiving device configured to receive a reflected pulse laser corresponding to the broadened pulse laser reflected from the target object and convert the reflected pulse laser into an electrical signal, and at least one processor configured to generate a spectral image set based on the electrical signal generated by the light receiving device.

Claims20

Dependent claims

An optical imaging device comprising:

a pulse generator comprising:
a pulse generating device configured to generate pulse lasers;
and
a pulse expander configured to:
receive a pulse laser from the pulse generating device;
and
generate a broadened pulse laser by expanding a spectrum and width of the received pulse laser;
an optical assembly comprising an objective lens configured to:
receive the broadened pulse laser and pass the received broadened pulse laser to a target object;
and
a light receiver comprising:
a light receiving device configured to:
receive a reflected pulse laser corresponding to the broadened pulse laser reflected from the target object;
and
convert the reflected pulse laser into an electrical signal;
and
at least one processor configured to generate a spectral image set based on the electrical signal generated by the light receiving device, the spectral image set comprising a plurality of spectral images generated based on one reflected pulse laser received by the light receiving device.

14 more elements

A hyper-spectral imaging device comprising:

a femtosecond pulse generating device configured to generate pulse lasers;
a pulse expander configured to:
receive a pulse laser from the femtosecond pulse generating device;
and
generate a broadband pulse laser by expanding a spectrum and a width of the received pulse laser;
an intermediate beam splitter configured to:
receive a broadened pulse laser from the pulse expander;
and
branch a first portion of the received broadened pulse laser and transmit a second portion of the received broadened pulse laser;
an intermediate light receiving device configured to receive the first portion of the broadened pulse laser branched from the intermediate beam splitter;
a first beam splitter configured to receive the second portion of the broadened pulse laser and output the second portion of the broadened pulse laser in one direction;
an objective lens configured to receive the second portion of the broadened pulse laser and pass the received second portion of the broadened pulse laser to a target object;
an intensified charged coupled device (ICCD) configured to:
receive a reflected pulse laser corresponding to the second portion of the broadened pulse laser reflected from the target object;
and
convert the reflected pulse laser into a first electrical signal;
and
at least one processor configured to:
generate a three-dimensional (3D) hypercube comprising a plurality of spectral images based on the first electrical signal;
receive an intermediate electrical signal generated based on the first portion of the broadened pulse laser, and
normalize the 3D hypercube based on the intermediate electrical signal.

18 more elements

A hyper-spectral imaging device comprising:

a femtosecond pulse generating device configured to generate pulse lasers;
a pulse expander configured to:
receive a pulse laser from the femtosecond pulse generating device;
and
generate a broadband pulse laser by expanding a spectrum and a width of the received pulse laser;
an intermediate beam splitter configured to:
receive a broadened pulse laser from the pulse expander;
and
branch a first portion of the received broadened pulse laser and transmit a second portion of the received broadened pulse laser;
an intermediate light receiving device configured to receive the first portion of the broadened pulse laser branched from the intermediate beam splitter;
a first beam splitter configured to receive the second portion of the broadened pulse laser and outputs the second portion of the broadened pulse laser in one direction;
an objective lens configured to receive the second portion of the broadened pulse laser and pass the received second portion of the broadened pulse laser to a target object;
an intensified charged coupled device (ICCD) configured to:
receive a reflected pulse laser corresponding to the second portion of the broadened pulse laser reflected from the target object;
and
convert the reflected pulse laser into a first electrical signal;
and
at least one processor configured to:
generate a three-dimensional (3D) hypercube comprising a plurality of spectral images based on the first electrical signal;
divide one reflected pulse laser into N segments based on a reception time of each portion of the reflected pulse laser;
generate a spectral image for each of the first to Nth segments in order of reception time, wherein the 3D hypercube comprises a first spectral image corresponding to the first segment, to an N-th spectral image corresponding to the N-th segment;
receive an intermediate electrical signal generated based on the first portion of the broadened pulse laser;
and
normalize the 3D hypercube based on the intermediate electrical signal, wherein N is a natural number of 2 or more, and
wherein the smaller of a repetition rate of the femtosecond pulse generating device and a sampling frequency of the ICCD is equal to or greater than a number of generations of per second of the 3D hypercube.

22 more elements

Dependencies are inferred from the claim text.

Optical imaging device

Life of this patent

Optical imaging device

Life of this patent

Abstract

Claims20