公开(公告)号：US20200292805A1

公开(公告)日：2020-09-17

申请号：US16742951

申请日：2020-01-15

Applicant: NKT Photonics A/S

Inventor： Frederik D. NIELSEN ,  Carsten L. THOMSEN ,  Weidong SHENG ,  Erik H. THOMSEN

IPC: G02B26/00 ,  G01J3/10 ,  G02B27/10 ,  G02B5/20 ,  G01N21/64 ,  G02F1/11 ,  G02B27/00

Abstract: An optical measurement system for illuminating a sample with filtered light and measuring fluorescence from the sample, which system includes a broadband light source arranged to provide a broadband beam; a first tunable element arranged to filter at least a portion of the broadband beam thereby providing filtered light; and a control unit arranged to provide a control signal to said first tunable element, wherein the first tunable element includes an acousto-optic filter (AOTF) and the control signal to the AOTF includes an acoustic RF signal provided by a Voltage Controlled Oscillator (VCO) arranged so the AOTF provides an out-of-band suppression of more than or equal to 25 dB.

公开(公告)号：US20250013032A1

公开(公告)日：2025-01-09

申请号：US18888757

申请日：2024-09-18

Applicant: NKT Photonics A/S

Inventor： Frederik D. NIELSEN ,  Carsten L. THOMSEN ,  Weidong SHENG ,  Erik H. THOMSEN

IPC: G02B26/00 ,  G01J3/10 ,  G01N21/64 ,  G02B5/20 ,  G02B27/00 ,  G02F1/11

Abstract: A filter for filtering a broadband beam and in one embodiment a fluorescence measurement system comprising such a filter. The system includes a broadband light source arranged to provide a broadband beam, a first tunable element arranged to filter at least a portion of the broadband beam thereby providing filtered light and a control unit arranged to provide a control signal to the first tunable element. In one embodiment the first tunable element is an acousto-optic filter (AOTF) and the control signal to the AOTF is an acoustic RF signal provided by a Voltage Controlled Oscillator (VCO) arranged so the AOTF provide a high out-of-band suppression.