720nm Bandpass Filter

720nm light is a near-infrared wavelength with moderate penetrability through certain materials and minimal overlap with visible light spectra, enabling precise wavelength isolation.

  • Application 1: In optical spectroscopy, a 720nm Bandpass Filter is used to isolate this specific wavelength for analyzing samples that exhibit unique absorption or reflection characteristics at 720nm, such as chlorophyll in plant health monitoring to assess photosynthetic activity without interference from other spectral bands.
  • Application 2: In biomedical applications, it is employed in fluorescence microscopy or diagnostic devices to filter out unwanted wavelengths and allow only 720nm light to pass, enhancing the detection sensitivity of fluorescent markers or dyes that emit or absorb at this wavelength, such as in cancer cell imaging or protein labeling studies.
  • Application 3: In remote sensing or imaging systems, the filter is utilized to capture images or data in the 720nm range, which can penetrate haze or vegetation more effectively than visible light, supporting applications like agricultural crop health assessment (to identify stress indicators through leaf reflectance) or surveillance in low-light conditions where this wavelength is less affected by ambient light noise.
720nm Bandpass Filter
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  • BP720-25 Bandpass Filter(CWL=720nm,FWHM=25nm)

    OD6@200-850nm

    $55.00

  • BP720-10 Bandpass Filter(CWL=720nm,FWHM=10nm)

    OD5@200-1100nm

    $55.00

  • BP720-40 Bandpass Filter(CWL=720nm,FWHM=40nm)

    OD5@200-1100nm

    $55.00
US Patent 11,222,415 - Systems and methods for deep learning microscopy

US Patent 11,222,415 - Systems and methods for deep learning microscopy

Context: This patent details computational microscopy techniques that use deep learning to enhance image resolution. The hardware setup described for acquiring the training data often utilizes specific narrow bandpass filters to capture ground-truth fluorescence images.

Usage of Filter: A 720 nm bandpass filter (e.g., 720/60 nm) is used in the emission path to capture the fluorescence signal from specific near-infrared dyes or photosensitizers (like those used in photodynamic therapy) during the high-resolution image acquisition phase.

Function: It ensures that only the specific wavelength corresponding to the fluorophore's peak emission (around 720 nm) reaches the sensor, rejecting autofluorescence and scattered excitation light.

Result: This optical setup, combined with the neural network, achieves cross-modality super-resolution, allowing lower-quality images to be enhanced to the quality of those captured with the precise 720 nm bandpass hardware.

US Patent Application 2003/0230728 - Multiwavelength transilluminator for absorbance and fluorescence detection

US Patent Application 2003/0230728 - Multiwavelength transilluminator for absorbance and fluorescence detection

Context: This application describes a device for viewing biological materials (like DNA gels) stained with various dyes.

Usage of Filter: The 720 nm bandpass filter is used as a detection filter placed between the sample and the viewer/camera.

Function: It is selected to match the emission spectra of specific red/near-infrared fluorescent dyes, ensuring that only the relevant signal is visible while blocking the illumination source.

Result: The invention allows for the simultaneous or sequential detection of multiple distinct biological targets without cross-talk between different dye signals.

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