Search results
Results from the WOW.Com Content Network
By making the off-axis illumination (i.e., the light is illuminating the mask at an oblique angle), all the diffraction orders from the mask are tilted, which makes it more likely that the higher diffraction orders can make it through the projection lens and help form the image of the mask onto the wafer.
Alternate light source is the use of a bright white light, such as a flashlight, to better see dusty prints on the ground that may not otherwise be visible to the eye. An alternate light source is usually used by applying oblique lighting to an area of floor to more easily locate footprints to be lifted. [1]
Common types of photography such as creative and artistic photography give a different purpose than forensic photography. Crime scene photography allows one to capture essential aspects of the crime scene, including its scope, the focal points of the scene, and any physical or material evidence found at or from a result of it. [5]
Fresnel lens design allows a substantial reduction in thickness (and thus mass and volume of material) at the expense of reducing the imaging quality of the lens, which is why precise imaging applications such as photography usually still use larger conventional lenses.
Examination using side (oblique) lighting: as a general rule, all items should be examined using side lighting. This is important because visual examination may detect deep indentations even though the EDD may fail to develop those indentations properly.
But German photographer Patrik Budenz was able to convince the Institute of Legal Medicine and Forensic Sciences in Berlin to allow him to spend four years researching and taking photographs of ...
The stereo, stereoscopic or dissecting microscope is an optical microscope variant designed for low magnification observation of a sample, typically using light reflected from the surface of an object rather than transmitted through it. The instrument uses two separate optical paths with two objectives and eyepieces to provide slightly ...
The Crime-lite is a handheld, high-intensity alternative light source used primarily by forensic investigators [1] to detect evidence such as fingerprints, bodily fluids and latent evidence from crime scenes. The Crime-lite was one of the first commercially available alternative light sources to benefit from LED technology.