The Pathologist`s Microscope
... clean to function properly. Clean them and you will be amazed at the difference! Take them off the nosepiece and clean the end lens with a little glass cleaner on a cotton swab. In addition to magnification, objective lenses have other characteristics. The most important is numerical aperture (N.A.) ...
... clean to function properly. Clean them and you will be amazed at the difference! Take them off the nosepiece and clean the end lens with a little glass cleaner on a cotton swab. In addition to magnification, objective lenses have other characteristics. The most important is numerical aperture (N.A.) ...
How Do Lenses and Mirrors Affect Light?
... a spoon. The edges of the mirror curve toward you. What other objects in your everyday life are concave? What does an image in a concave mirror look like? Concave mirrors reflect light rays to a point in space called the focus . The focus is in front of the mirror. If you put a piece of paper there, ...
... a spoon. The edges of the mirror curve toward you. What other objects in your everyday life are concave? What does an image in a concave mirror look like? Concave mirrors reflect light rays to a point in space called the focus . The focus is in front of the mirror. If you put a piece of paper there, ...
Sample Pages
... Flexible endoscopes use imaging fiber bundles to transfer the image from the distal end of the endoscope to the imaging lens or eyepiece, as shown in Fig. 8.4. With fiber bundles, the diameter of the space required for the image relay is reduced significantly, leaving more space for other instrument ...
... Flexible endoscopes use imaging fiber bundles to transfer the image from the distal end of the endoscope to the imaging lens or eyepiece, as shown in Fig. 8.4. With fiber bundles, the diameter of the space required for the image relay is reduced significantly, leaving more space for other instrument ...
File
... best image. The distance Im IP, measures the longitudinal spherical aberration. The radius of the circle of least confusion measures the lateral spherical aberration. When the aperture of the lens is relatively large compared to the focal length of the lens, the come of the rays of light refracted t ...
... best image. The distance Im IP, measures the longitudinal spherical aberration. The radius of the circle of least confusion measures the lateral spherical aberration. When the aperture of the lens is relatively large compared to the focal length of the lens, the come of the rays of light refracted t ...
LM Ch 8: Bright Field
... Proper technique in focusing can make using the microscope a pleasure even after many hours of observation. Here are a few suggestions: 1) Correct adjustment of the interpupillary distance and diopter correction of each eyepiece is very important. See Chapter 1 for details on adjusting the binocular ...
... Proper technique in focusing can make using the microscope a pleasure even after many hours of observation. Here are a few suggestions: 1) Correct adjustment of the interpupillary distance and diopter correction of each eyepiece is very important. See Chapter 1 for details on adjusting the binocular ...
Fun
... image projected by the lens from two different directions (each line of pixels in the array looks from the opposite direction of the other) and identifies the phase difference of the light from each direction. In one "look," it calculates the distance and direction the lens must be moved to cancel t ...
... image projected by the lens from two different directions (each line of pixels in the array looks from the opposite direction of the other) and identifies the phase difference of the light from each direction. In one "look," it calculates the distance and direction the lens must be moved to cancel t ...
Full Article
... Medical devices accomplish big feats on a small scale. This is especially the case with ophthalmic applications like contact or intraocular lenses, in which whole devices are no larger than the eye and virtually unnoticeable. Intraocular lenses, or IOLs, are similar to contact lenses, except that t ...
... Medical devices accomplish big feats on a small scale. This is especially the case with ophthalmic applications like contact or intraocular lenses, in which whole devices are no larger than the eye and virtually unnoticeable. Intraocular lenses, or IOLs, are similar to contact lenses, except that t ...
Basic Imaging Properties with Lenses
... There are two types of images: real images and virtual images. Real images occur when light converges and comes to a focus. An example of this is a projector. It projects light that forms a real image on a screen. The previous examples, Figure 1 and Figure 2 are both examples of real images. Virtua ...
... There are two types of images: real images and virtual images. Real images occur when light converges and comes to a focus. An example of this is a projector. It projects light that forms a real image on a screen. The previous examples, Figure 1 and Figure 2 are both examples of real images. Virtua ...
Off-axis focal shift for rotationally nonsymmetric screens
... projection onto the off-axis line is increased and the integral in Eq. (7) is then shorter. Although the shape of the function sAb changes, in general the corresponding off-axis irradiance will have a sharper maximum, which is less displaced by the factor 1/(f + z) outside the integral. So we expect ...
... projection onto the off-axis line is increased and the integral in Eq. (7) is then shorter. Although the shape of the function sAb changes, in general the corresponding off-axis irradiance will have a sharper maximum, which is less displaced by the factor 1/(f + z) outside the integral. So we expect ...
Photo Resists 6.5.2 Resist and Steppers
... And somehow you have to control the stage movement; i.e. you must measure where you are with respect to some alignment marks on the chip with the same kind of precision. We need some alignment module in the stepper. Alignment is done optically, too, as an integral (and supremely important) part of s ...
... And somehow you have to control the stage movement; i.e. you must measure where you are with respect to some alignment marks on the chip with the same kind of precision. We need some alignment module in the stepper. Alignment is done optically, too, as an integral (and supremely important) part of s ...
Experiments in Optics - Workspace
... The aim of this set of experiments is to observe the interference and diffraction patterns obtained when a laser illuminates various apertures and to compare them with those predicted according to the wave theory of 1ight. Analysis of diffraction close to the diffracting aperture, known as near-fiel ...
... The aim of this set of experiments is to observe the interference and diffraction patterns obtained when a laser illuminates various apertures and to compare them with those predicted according to the wave theory of 1ight. Analysis of diffraction close to the diffracting aperture, known as near-fiel ...
PowerPoint (PPT) One: The theories of light in historical perspective
... a spherical shell acts as a concave mirror, and a beam of parallel rays is incident on it,then all rays after being reflected pass through the same point, call it F, or the “focal point”. The distance between F and the mirror surface (usually denoted as f ) is ½ R, where R is the radius of the spher ...
... a spherical shell acts as a concave mirror, and a beam of parallel rays is incident on it,then all rays after being reflected pass through the same point, call it F, or the “focal point”. The distance between F and the mirror surface (usually denoted as f ) is ½ R, where R is the radius of the spher ...
F-number
In optics, the f-number (sometimes called focal ratio, f-ratio, f-stop, or relative aperture) of an optical system is the ratio of the lens's focal length to the diameter of the entrance pupil. It is a dimensionless number that is a quantitative measure of lens speed, and an important concept in photography. The number is commonly notated using a hooked f, i.e. f/N, where N is the f-number.