Patent ID: 11898912
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. An inspection apparatus comprising:
a dichroic mirror configured to split an output beam into a first output beam having a first wavelength band and a second output beam having a second wavelength band that is different from the first wavelength band;
a first hyperspectral imaging (HSI) optical system, which comprises a first aspherical mirror configured to reflect the first output beam, a first planar grating having a planar reflective surface configured to generate a plurality of first split beams by reflecting the first output beam, and a first camera configured to receive the plurality of first split beams to obtain at least one of a two-dimensional HSI image and a 3-dimensional hyper-cube image; and
a second HSI optical system, which comprises a second aspherical mirror configured to reflect the second output beam, a second grating configured to generate a plurality of second split beams by reflecting the second output beam, and a second camera configured to receive the plurality of second split beams to obtain at least one of a two-dimensional HSI image and a 3-dimensional hyper-cube image,
wherein the reflection of the first output beam by the first aspherical mirror is directly reflected to the first planar grating from the first aspherical mirror,
wherein the first planar grating provides the plurality of first split beams directly to the first aspherical mirror,
wherein the plurality of first split beams are reflected by the first aspherical mirror to be provided to the first camera,
wherein the reflection of the second output beam by the second aspherical mirror is directly reflected to the second grating from the second aspherical mirror,
wherein the second grating provides the plurality of second split beams directly to the second aspherical mirror, and
wherein the plurality of second split beams are reflected by the second aspherical mirror to be provided to the second camera.