Geometrical Optics 101: Paraxial Ray Tracing
... If the location of the aperture stop is unknown, a trial ray, known as the pseudo marginal ray, must be propagated through the system. For an object not at infinity, this ray must begin at the axial position of the object and can have an arbitrary incident angle. For an object at infinity, the ray c ...
... If the location of the aperture stop is unknown, a trial ray, known as the pseudo marginal ray, must be propagated through the system. For an object not at infinity, this ray must begin at the axial position of the object and can have an arbitrary incident angle. For an object at infinity, the ray c ...
U17301 - 3B Scientific
... Reflection of light on one edge of glass prism E11b Reflection of light on two edges of glass prism E11c Reflection of light on two glass prisms E11d Reflection of light on two glass prisms E11e Reflection of light on two glass prisms E12 Reflection of light on air prisms E13a Light ray passing a co ...
... Reflection of light on one edge of glass prism E11b Reflection of light on two edges of glass prism E11c Reflection of light on two glass prisms E11d Reflection of light on two glass prisms E11e Reflection of light on two glass prisms E12 Reflection of light on air prisms E13a Light ray passing a co ...
The physics of the compact disc
... will also be affected by the distance of the track from the lens. Ideally this equals the focal length of the lens, but if the disc is not perfectly flat or if it does not sit perfectly in the player the distance could vary. The depth of focus is the range of distances over which the spot of light i ...
... will also be affected by the distance of the track from the lens. Ideally this equals the focal length of the lens, but if the disc is not perfectly flat or if it does not sit perfectly in the player the distance could vary. The depth of focus is the range of distances over which the spot of light i ...
Shaping the focal intensity distribution using spatial coherence
... Although light encountered under many practical circumstances is partially coherent, the intensity near focus of such wave fields has been studied in relatively few cases [1–5]. The correlation properties of focused partially coherent fields have been examined in [6,7], where it was shown that the c ...
... Although light encountered under many practical circumstances is partially coherent, the intensity near focus of such wave fields has been studied in relatively few cases [1–5]. The correlation properties of focused partially coherent fields have been examined in [6,7], where it was shown that the c ...
Opto-Mechanical Image Quality Degradation of Single Point
... calculated scattered powers can be reabsorbed by optics and mounts causing thermal effects. Final Remarks A thorough lens design tolerancing can be done only after a opto-mechanical layout is established. The knife edge method, centered on the mechanical axis, may not provide the correct spot size d ...
... calculated scattered powers can be reabsorbed by optics and mounts causing thermal effects. Final Remarks A thorough lens design tolerancing can be done only after a opto-mechanical layout is established. The knife edge method, centered on the mechanical axis, may not provide the correct spot size d ...
Physics 212: General Physics II
... 1. Open the following web page: http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?=65 2. From the pull-down menu, select” Mirror” instead of “Lens”. The object distance is labeled “p” in this applet. For the object distance “p” and focal distance “f”, enter the values from the Preliminary Question 1 ...
... 1. Open the following web page: http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?=65 2. From the pull-down menu, select” Mirror” instead of “Lens”. The object distance is labeled “p” in this applet. For the object distance “p” and focal distance “f”, enter the values from the Preliminary Question 1 ...
Simpson IOL Design Principles
... • “Fresnel zones” are a characteristic of diffractive lenses (early 1800s) • Where optical path increases by a wavelength • Fresnel recognized the importance of light repeating every wavelength • He worked on very small diffraction effects • He invented the modern lighthouse with its enormous ...
... • “Fresnel zones” are a characteristic of diffractive lenses (early 1800s) • Where optical path increases by a wavelength • Fresnel recognized the importance of light repeating every wavelength • He worked on very small diffraction effects • He invented the modern lighthouse with its enormous ...
University of Groningen CURVATURE MEASUREMENT
... several spherometrical methods (Kessler, 1927). The most straightforward optical spherometer microscope is that using auto-collimation (see, e.g., Longhurst, 198l), so that for a curved reflecting surface there exist two positions of the surface which give an image of cross-wires coincident with the ...
... several spherometrical methods (Kessler, 1927). The most straightforward optical spherometer microscope is that using auto-collimation (see, e.g., Longhurst, 198l), so that for a curved reflecting surface there exist two positions of the surface which give an image of cross-wires coincident with the ...
Aberrations
... more common now to let the computer do these calculations. Note that the larger the actual angle of incidence of a ray on a surface, the greater the angular (and hence wavefront) deviation from paraxial optics will be. ...
... more common now to let the computer do these calculations. Note that the larger the actual angle of incidence of a ray on a surface, the greater the angular (and hence wavefront) deviation from paraxial optics will be. ...
Coupling to aeroGAIN-ROD fibers
... tested with respect to climate change, vibration, and drop testing, and is very robust against transport and storage conditions. The module can tolerate large temperature changes from -30°C to 60°C and large vibrations, shock tested up to 1G at frequencies from 30Hz to 500Hz, without affecting the o ...
... tested with respect to climate change, vibration, and drop testing, and is very robust against transport and storage conditions. The module can tolerate large temperature changes from -30°C to 60°C and large vibrations, shock tested up to 1G at frequencies from 30Hz to 500Hz, without affecting the o ...
Simulating and optimizing compound refractive lens-based X
... with respect to N’. While attenuation by the lens means that CRLs practically operate within the first half-period (i.e. 0 N’ ), optical behavior differs markedly between the thin-lens limit (i.e. NT fN and correspondingly N’ 1) and the general thick lens case (i.e. all values of N’). This ...
... with respect to N’. While attenuation by the lens means that CRLs practically operate within the first half-period (i.e. 0 N’ ), optical behavior differs markedly between the thin-lens limit (i.e. NT fN and correspondingly N’ 1) and the general thick lens case (i.e. all values of N’). This ...
Vision and Optical Instruments
... Seeing faces and objects we love and cherish is a delight—one’s favorite teddy bear, a picture on the wall, or the sun rising over the mountains. Intricate images help us understand nature and are invaluable for developing techniques and technologies in order to improve the quality of life. The imag ...
... Seeing faces and objects we love and cherish is a delight—one’s favorite teddy bear, a picture on the wall, or the sun rising over the mountains. Intricate images help us understand nature and are invaluable for developing techniques and technologies in order to improve the quality of life. The imag ...
The Eye
... • Each of the parallel light rays arriving from the star can be thought of as indicating the direction in which the wave front is travelling. If, starting at some position on the optical axis, we connected the nearest points on each wave that had the same phase, the resulting surface, called a wave ...
... • Each of the parallel light rays arriving from the star can be thought of as indicating the direction in which the wave front is travelling. If, starting at some position on the optical axis, we connected the nearest points on each wave that had the same phase, the resulting surface, called a wave ...
Shrinkage Modeling of Injection Molded Precision Optics
... such parts, it becomes critical to have a greater understanding and control of all the processes involved in molding of the optics. Traditionally, the steps in making of the molded optics include fabrication of mold inserts by the diamond turning process; injection molding; measuring the molded opti ...
... such parts, it becomes critical to have a greater understanding and control of all the processes involved in molding of the optics. Traditionally, the steps in making of the molded optics include fabrication of mold inserts by the diamond turning process; injection molding; measuring the molded opti ...
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.