公开(公告)号：US11333606B2

公开(公告)日：2022-05-17

申请号：US16995931

申请日：2020-08-18

Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.

Inventor： Jiangquan Mai ,  Fangyi Shi ,  Wai Yi Yeung

IPC: G01N21/64 ,  G01N21/87 ,  G01N21/59

Abstract: There is disclosed an apparatus for visually inspecting gemstones. The apparatus contains a first light source, a sample stage adapted to receive a gemstone thereon, and a rotating stage located below the sample stage. The rotating stage is adapted to rotate relative to the sample stage. Embodiments of the invention therefore provide a portable and automatic gemstone inspecting apparatus that provides multiple inspection methods centrally without the need to use other external devices.

公开(公告)号：US20200025611A1

公开(公告)日：2020-01-23

申请号：US16037855

申请日：2018-07-17

Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.

Inventor： Jiangquan Mai ,  Wai Yi Yeung ,  Siddharth Arunkumar Agrawal ,  Chun Zhang

IPC: G01J3/02 ,  G01J3/26 ,  G01J3/45 ,  G01N21/25

Abstract: Systems and methods which provide a compact spectrometer using static Fourier transform interferometer (SFTI) cube configurations, such as are suitable for use with respect to mobile and portable electronic devices, are described. A SFTI cube of embodiments comprises a monolithic dual mirrored wedge beam splitter structure wherein mirrored wedge surfaces provide two reflective mirrors that are slightly tilted away from the orthogonal directions so that the resultant beams of light cross over one another and form an interference pattern. SFTI cube implementations of embodiments facilitate highly compact spectrometer configurations having a wide wavelength range, high resolution, high throughput, and low cost.

公开(公告)号：US10830641B2

公开(公告)日：2020-11-10

申请号：US16037855

申请日：2018-07-17

Applicant: Hong Kong Applied Science and Technology Research Institute Co., Ltd.

Inventor： Jiangquan Mai ,  Wai Yi Yeung ,  Siddharth Arunkumar Agrawal ,  Chun Zhang

IPC: G01J3/02 ,  G01N21/25 ,  G01J3/45 ,  G01J3/26

Abstract: Systems and methods which provide a compact spectrometer using static Fourier transform interferometer (SFTI) cube configurations, such as are suitable for use with respect to mobile and portable electronic devices, are described. A SFTI cube of embodiments comprises a monolithic dual mirrored wedge beam splitter structure wherein mirrored wedge surfaces provide two reflective mirrors that are slightly tilted away from the orthogonal directions so that the resultant beams of light cross over one another and form an interference pattern. SFTI cube implementations of embodiments facilitate highly compact spectrometer configurations having a wide wavelength range, high resolution, high throughput, and low cost.