Optical Alignment
Optical Alignment - Related Videos
08:31
Three-dimensional Optical-resolution Photoacoustic Microscopy
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Cited by 27 •
2011
Optical-resolution photoacoustic microscopy (OR-PAM) is an emerging technology capable of imaging optical absorption contrasts in vivo with cellular resolution and sensitivity. Here, we provide a visualized instruction on the experimental protocols of OR-PAM, including system configuration, system alignment, typical in vivo experimental procedures, and functional imaging schemes.
07:02
Alignment of Visible-Light Optical Coherence Tomography Fibergrams with Confocal Images of the Same Mouse Retina
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Cited by 3 •
2023
The present protocol outlines the steps for aligning in vivo visible-light optical coherence tomography fibergraphy (vis-OCTF) images with ex vivo confocal images of the same mouse retina for the purpose of verifying the observed retinal ganglion cell axon bundle morphology in the in vivo images.
11:36
Assembly, Loading, and Alignment of an Analytical Ultracentrifuge Sample Cell
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Cited by 21 •
2009
The analytical ultracentrifuge (AUC) sample cell holds sample and reference buffer and during experiments and is exposed to high vacuum and rotor speeds up to 60,000 rpm. This video will demonstrate the rigorous attention to detail necessary for assembly, loading and alignment of this very important component of an AUC experiment.
13:39
Optical Trapping of Nanoparticles
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Cited by 7 •
2013
The following setup approach details low power optical trapping of dielectric nanoparticles using a double-nanohole in metal film.
09:48
An Approach to Enhance Alignment and Myelination of Dorsal Root Ganglion Neurons
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Cited by 7 •
2016
This protocol describes the isolation of dorsal root ganglion (DRG) neurons isolated from rats and the culture of DRG neurons on a static pre-stretched cell culture system to enhance axon alignment, with subsequent co-culture of Schwann Cells (SCs) to promote myelination.
FAQs
Positioning lenses, mirrors, illumination sources, and detectors around a common optical axis gives light a controlled path through the system. This coordination supports beam overlap and focus while reducing aberrations and stray light. In biological instruments, the resulting optical consistency helps maximize detected signal, improve image formation, and provide a stronger basis for quantitative measurements.
These adjustments control different aspects of light propagation and detection. Focus supports reliable image formation, collimation helps maintain a controlled light path, and beam overlap brings the relevant illumination and detection paths into better agreement. Refining them together can increase signal and reduce optical imperfections, which is especially important when biological measurements depend on consistent imaging conditions.
Small changes in component tilt or position alter how light travels through the optical system. Adjusting these variables helps bring lenses, mirrors, illumination sources, and detectors into the intended arrangement around the optical axis. Proper positioning improves beam overlap and limits unwanted effects such as aberrations or stray light, supporting more dependable optical measurements.
Accurate alignment helps produce uniform illumination and reliable image formation in fluorescence microscopy and live-cell imaging. These qualities support consistent visualization while reducing optical factors that can interfere with signal detection. Better alignment therefore contributes to improved resolution and sensitivity, making image-based observations more reproducible across biological samples and experimental measurements.
A useful sequence begins by establishing the common optical axis, followed by positioning and orienting the lenses, mirrors, illumination sources, and detectors. The system can then be refined through adjustments to focus, collimation, and beam overlap. Evaluating signal, aberrations, stray light, and image formation during this process helps guide the final alignment.
The main components are lenses, mirrors, illumination sources, and detectors. Their positions and orientations must be considered together because each contributes to the controlled path of light. Coordinating these elements supports overlap between illumination and detection paths, improves focus, and helps prevent signal loss or unwanted optical effects that could compromise biological imaging.
It is particularly important in fluorescence microscopy, live-cell imaging, spectroscopy, and quantitative analysis. These applications depend on controlled light paths, dependable signal detection, or consistent image formation. Alignment improves the quality and reproducibility of the resulting measurements, helping researchers obtain more reliable information from biological samples and optical experiments.
Researchers can assess whether alignment has improved signal strength, illumination uniformity, resolution, sensitivity, and measurement reproducibility. They can also look for reduced aberrations and stray light, along with more reliable image formation. Together, these outcomes indicate whether the optical system is better suited for routine microscopy or advanced biological research instrumentation.