PMID- 34612964 OWN - NLM STAT- MEDLINE DCOM- 20220118 LR - 20220118 IS - 1539-4522 (Electronic) IS - 1559-128X (Linking) VI - 60 IP - 27 DP - 2021 Sep 20 TI - Mid-infrared multispectral confocal microscope using off-axis parabolic mirrors to study epiretinal membranes. PG - 8616-8623 LID - 10.1364/AO.436257 [doi] AB - Mid-infrared (mid-IR) multispectral microscopy, especially operating at the wavelength of 5-11 microm, is an effective tool for detecting, identifying, and quantifying the structure and composition of biological tissues. Compared with that based on the optical lens, the mid-infrared microscope composed of off-axis parabolic (OAP) mirrors is low cost, simple, and suitable for longer range of wavelength without chromatic aberrations, while keeping the optical transmission efficiency. Here we report a compact and versatile mid-infrared multispectral confocal microscope based on off-axis parabolic mirrors. We also perform numerical calculations based on the vectorial diffraction theory on OAP mirrors and analyze the typical aberrations and misalignment of the OAP-based optical system. Finally, we perform multispectral imaging of the epiretinal membrane of the human eyes with the spectrum selected according to its resonance absorption peak. The system is designed to perform multispectral or even hyperspectral imaging to identify and predict potential disease. FAU - Zhu, Jiaying AU - Zhu J FAU - Wang, Ruixing AU - Wang R FAU - Liu, Qiao AU - Liu Q FAU - Luo, Zhifu AU - Luo Z FAU - Tian, Bei AU - Tian B FAU - Zhu, Li-Guo AU - Zhu LG LA - eng PT - Journal Article PL - United States TA - Appl Opt JT - Applied optics JID - 0247660 SB - IM MH - Epiretinal Membrane/*diagnostic imaging MH - Equipment Design MH - Humans MH - Lasers MH - Microscopy, Confocal/*instrumentation/methods MH - Optical Devices MH - Signal-To-Noise Ratio MH - Spectrophotometry, Infrared EDAT- 2021/10/07 06:00 MHDA- 2022/01/19 06:00 CRDT- 2021/10/06 12:24 PHST- 2021/10/06 12:24 [entrez] PHST- 2021/10/07 06:00 [pubmed] PHST- 2022/01/19 06:00 [medline] AID - 459220 [pii] AID - 10.1364/AO.436257 [doi] PST - ppublish SO - Appl Opt. 2021 Sep 20;60(27):8616-8623. doi: 10.1364/AO.436257.