HOLOGRAPHIC ULTRA RESOLUTION IMAGING

    公开(公告)号:US20240428375A1

    公开(公告)日:2024-12-26

    申请号:US18826296

    申请日:2024-09-06

    Abstract: An advance in ultra-high-resolution optical imaging has been achieved by the introduction of iterative high-resolution image-building algorithms to incoherent holography. A recorded FINCH hologram is used as the basis of a method in which a high resolution image is built using detailed knowledge of the point spread functions of the FINCH hologram or reconstructed image, and then iteratively improved by successive algorithm generations of comparison to the recorded FINCH hologram and alteration of the high resolution image.

    Holograms using birefringent lenses

    公开(公告)号:US11194290B2

    公开(公告)日:2021-12-07

    申请号:US16410365

    申请日:2019-05-13

    Abstract: Techniques to improve image quality in holography utilizing lenses made from materials with non-quantized anisotropic electromagnetic properties, such as birefringent materials, to advantageously split an incoming beam of light into two coincident beams with different focal lengths that interfere with one another and thus create holograms free of electro-optical or pixelated devices are disclosed. Corresponding systems, methods and apparatuses are described.

    Incoherent fluorescence digital holographic microscopy using transmission liquid crystal lens

    公开(公告)号:US10228655B2

    公开(公告)日:2019-03-12

    申请号:US15861115

    申请日:2018-01-03

    Abstract: A new optical arrangement that creates high efficiency, high quality Fresnel Incoherent Correlation Holography (FINCH) holograms using transmission liquid crystal GRIN (TLCGRIN) diffractive lenses has been invented. This is in contrast to the universal practice in the field of using a reflective spatial light modulator (SLM) to separate sample and reference beams. Polarization sensitive TLCGRIN lenses enable a straight optical path, have 95% transmission efficiency, are analog devices without pixels and are free of many limitations of reflective SLM devices. An additional advantage is that they create an incoherent holographic system that is achromatic over a wide bandwidth. Two spherical beams created by the combination of a glass and a polarization sensitive TLCGRIN lenses interfere and a hologram is recorded by a digital camera. FINCH configurations which increase signal to noise ratios and imaging speed are also described.

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