Optical Microscope Inspection
Optical Microscope Inspection - Related Videos
10:28
Compact Lens-less Digital Holographic Microscope for MEMS Inspection and Characterization
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Cited by 5 •
2016
We present a compact reflection digital holographic system (CDHM) for inspection and characterization of MEMS devices. A lens-less design using a diverging input wave providing natural geometrical magnification is demonstrated. Both static and dynamic studies are presented.
05:02
Observation and Inspection
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2023
Source: Jaideep S. Talwalkar, MD, Internal Medicine and Pediatrics, Yale School of Medicine, New Haven, CT Observation and inspection is fundamental to physical examination and begins at the first point of contact with a patient. While observation and inspection are often used interchangeably, observation is a general term that refers to the careful use of one's senses to gain information. Inspection is an act limited to what one can observe visually, and when referring to physical examination,...
14:09
Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
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Cited by 11 •
2014
We describe the use of a standard optical microscope to perform quantitative measurements of cellular mass, volume, and density through a combination of bright field and differential interference contrast imagery.
09:12
Construction of a High Resolution Microscope with Conventional and Holographic Optical Trapping Capabilities
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Cited by 4 •
2013
The system described herein employs a traditional optical trap as well as an independent holographic optical trapping line, capable of creating and manipulating multiple traps. This allows for the creation of complex geometric arrangements of refractive particles while also permitting simultaneous high-speed, high-resolution measurements of the activity of biological enzymes.
04:57
Proper Care and Cleaning of the Microscope
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Cited by 2 •
2008
Keeping the microscope optics clean is important for high-quality imaging. Dust, fingerprints, excess immersion oil, or mounting medium on or in a microscope causes reduction in contrast and resolution. DIC is especially sensitive to contamination and scratches on the lens surfaces. This protocol details the procedure for keeping the microscope clean.
FAQs
Magnification enlarges apparent size, but resolution determines whether two nearby features or fine boundaries can be distinguished. Thus, increasing enlargement alone does not necessarily reveal additional structure. During inspection, both properties must be considered when assessing morphology, dimensional features, or surface defects, because a large image can still lack clearly separable detail.
Illumination supplies the visible light that interacts with the specimen, while contrast controls how clearly differences appear in the resulting image. Appropriate contrast can make boundaries, surface variations, and defects easier to distinguish without changing the specimen. In physics experiments, this improves visual comparison of structures and supports more reliable interpretation of observed features.
The objective and eyepiece lenses work together to collect and focus light into an enlarged image for examination. Their optical arrangement lets an inspector view specimen features at a scale that supports analysis rather than unaided observation. This is especially useful when comparing small morphology changes, dimensional features, or surface defects across samples.
Visibility depends on the relationship among magnification, resolution, contrast, and the way illumination interacts with the specimen. A feature may be enlarged yet remain difficult to distinguish if contrast is weak or resolution is insufficient. Considering these factors together helps determine whether an observed image can support judgments about morphology, dimensions, or defects.
An inspection begins by directing visible light onto the specimen, allowing the illumination to interact with its structure or surface. The objective and eyepiece lenses then collect and focus the resulting light into an enlarged image. The observer examines the image for morphology, dimensional features, or defects and compares structures when needed.
The essential arrangement includes a specimen, visible-light illumination, and optical lenses that collect and focus the light. The specimen may be a material, fabricated component, particle, or surface under study. Inspection quality then depends on how the optical image expresses contrast, magnification, and resolution for the feature being examined.
It is useful when researchers need direct visual evidence of physical structures without damaging the specimen. Physics applications include examining materials, fabricated components, particles, and surface defects, as well as comparing morphology or dimensional features. These observations can support quality assessment and experimental analysis when features must be documented visually.