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Topic: Dove prism

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	Olympus Microscopy Resource Center: Physics of Light and Color - Introduction to Prisms and Beamsplitters
		Although at first glance the dove prism appears to be a good candidate for dispersion (due to the angular entrance of the light beam), transmission of light through the prism is actually equivalent to passage through a slab of glass with the side benefit of image rotation.
		In practice, two dove prisms are often cemented together at the hypotenuse (after placing a mirrored surface on these faces) to produce a bi-prism with the ability to change the direction of sight for telescopes, periscopes, and other optical instruments.
		Penta prisms are often referred to as an optical square (as applied to surveying instruments), because the incoming light beam is deviated at the same angle, regardless of the prism orientation with respect to the line of sight.
	www.olympusmicro.com /primer/lightandcolor/prismsandbeamsplitters.html (5074 words)

	UV Grade Fused Silica Prisms
		The right angle prisms are often preferable to an inclined mirror in applications involving severe acoustic or inertial loads because they combine the mounting and acoustic isolation advantages of a prism with the excellent transmission of UV grade synthetic fused silica.
		Dove prisms are used as image rotators in a variety of optomechanical systems.
		Light entering the Dove prism must be parallel or collimated, because the length of the prism is typically four or five times the height of the prism.
	www.sciner.com /Opticsland/fs_prisms.htm (526 words)

	1.3 Basic Geometrical Optics (E-I-4)
		Glass prisms are often used to bend light in a given direction as well as to bend it back again (retroreflection).
		Prisms that depend on total internal reflection are commonly used in optical systems, both to change direction of light travel and to change the orientation of an image.
		The Porro prism, consisting of two right-angle prisms, is used in binoculars, for example, to produce erect final images and, at the same time, permit the distance between the object-viewing lenses to be greater than the normal eye-to-eye distance, thereby enhancing the stereoscopic effect produced by ordinary binocular vision.
	cord.org /step_online/st1-3/st13ei4.htm (649 words)

	Optics of Prisms
		Prisms are usually classified by the shapes of the bases; so we have triangular, rectangular, hexagonal and other types of prism.
		In optics, prisms made for the purpose of dispersing light are usually made with bases that are equilateral triangles, so that the angles between adjacent sides of the prism are 60°.
		Sometimes a very thick wedge is used (e.g., the “Dove prism” used as an image rotator) to produce a small angular deviation by refraction, and the dispersion is merely a nuisance.
	mintaka.sdsu.edu /GF/explain/optics/prisms.html (811 words)

	Prismatic Optics
		They may be used to turn or deviate a beam of light, to invert or rotate an image or to disperse light into a spatially separated wavelength spectrum.
		Prisms are extremely important and useful optical elements.
		We have a wide selection of standard prisms but if you don't see what you are looking for please contact us anyway.
	www.optarius.com /prismatic_optics.htm (178 words)

	A Prototype Spectrohelioscope
		Unfortunately, the Dove prisms I acquired were of poor optical quality, which forced me to change my plan and live with the vertical slits, mounting the Anderson prisms on separate motors in the Petit arrangement.
		The input side of the entrance prism's cylindrical shield is a round hole to allow a 1 inch diameter solar image to the spinning prism, while the side of the shield adjacent to the slit is a 1/4 inch vertical slot.
		The exit prism's shield likewise has a slot on the side adjacent to the exit slit to act as a baffle for stray light within the box and a round hole on the opposite side to provide for a 1 inch diameter light path to the eyepiece.
	home.att.net /~jsstars/ProtoSHS/protoshs.html (2698 words)

	Dove Prism (Site not responding. Last check: 2007-11-02)
		Dove Prism is a form of prism invented by H. Dove.
		It resembles half of a common Right-Angle Prism in which a ray entering parallel to hypotenuse face is reflected internally at that face and emerges parallel to its incident direction.
		The Dove Prism is used as an image rotator; the output of a Dove rotates at twice the angular rate of the rotation of the prism itself.
	www.doveprism.com /index.html (152 words)

	Dove Prisms (Site not responding. Last check: 2007-11-02)
		Dove prisms have two main uses - as image inverters and as delay lines.
		Furthermore, if the prism is rotated about the optical axis, the image rotates at twice the rate of rotation.
		Dove prisms are normally supplied uncoated but entrance and exit faces can be anti-reflection coated.
	www.optarius.com /dove_prisms.htm (110 words)

	Prism
		Prisms are blocks of optical material with flat polished sides arranged at precisely controlled angles to each other, which deflect, deviate and rotate beams of light as well as dispersing their wavelengths.
		And when the prism is rotated about the input parallel ray through some angle, the image rotates through twice that angle.
		Roof prism is combined with a right angle prism and a totally internally reflecting roof and they are attached by them largest square surfaces.
	www.u-oplaz.com /optics/optics06.htm (486 words)

	Optical touch switch structures - Patent 6765193
		where d is thickness of the Dove prism 6, y.sub.1 is the position of the incident optical beam from the bottom of the Dove prism 6,.theta.
		is the angle of the Dove prism 6, n.sub.prism is the refractive index of Dove prism material, and N is the number of TIR points along the touching surface 13 of the optical touch switch.
		It can be noticed that for a given minimum length of Dove prism 6, the number of TIR points along the touching surface 13 can be increased when the thickness of the Dove prism 6 reduces.
	www.freepatentsonline.com /6765193.html (3215 words)

	[No title]
		The third, larger prism of the Porro II design was placed a distance down the handle, and focusing was accomplished by moving this prism by rotating a small disc with the thumb.
		Because the light transits the prism twice in the direction of motion, this method of focusing changes the optical path two times as much as the mechanical distance traveled, and therefore provides a much greater range of focus within the motion of the focus wheel.
		Amici's roof prism was designed by 1823 and provided a fully correct image; and the Delaborne (or Dove) prism, by 1838, provided an image that was erect but reversed.
	home.europa.com /~telscope/porro.txt (3890 words)

	[No title] (Site not responding. Last check: 2007-11-02)
		In optics, a prism is a device used 5 to reflect light 2 or to break it 8 up (to disperse it) 8 into its constituent 5 spectral colors (colors 0 of the rainbow), traditionally 5 built in the shape 3 of a right 5 prism with triangular base.
		The angle that 6 the beam of light 7 makes with the 5 interface as well 5 as the refractive 8 indices of the two 4 media determine whether it 7 is reflected or 0 refracted, and by how 9 much (see refraction, total 9 internal reflection).
		Newton 4 placed a second prism 1 such that a separated 8 color would pass through 4 it and found the 4 color unchanged.
	www.thecontactlens.net /prism__optics__.htm (297 words)

	Image rotation
		You can see a similar effect using a normal right angle prism (the type in binoculars) by sighting through it as though it were a short dove prism.
		The trick of understanding a dove prism is to realize that the "beam" is refracted down towards the hypotenuse, bounces off it, then is refracted again at the second glass surface.
		The reason that the prism is not the same for every angle of rotation is that the image bounces off the hypotenuse differently as it is rotated.
	www.opticsnotes.com /sciopticsfaq/mirror.htm (1098 words)

	CVI Laser
		If the prism is rotated about its axis the image will rotate at twice the rate of rotation of the prism.
		Dove prisms need to be used with collimated or near-collimated beams because of the very limited field of view.
		Rotate it with the 1100 rotary mount for optics 0.5" to 1" in diameter.
	www.cvilaser.com /Catalog/Pages/Template1.aspx?pcid=104 (391 words)

	Programmable Image Rotator
		It is based on the commonly used optical image rotator called a dove prism (see 1a), which rotates an image by 2q when it is rotated by q.
		Figure 1b shows how this system can be thought of as consisting of three parts: an input prism, which directs the focused image towards a surface it will be reflected from; a reflective surface; and an exit prism that will send the image back on its original path.
		The acousto-optic dove prism (AODP) uses two acousto-optic beam deflectors (AOBDs) and a faceted cylindrical mirror to nonmechanically rotate images.
	spie.org /app/publications/magazines/oerarchive/july/jul98/sunny.html (789 words)

	Field De-Rotation in Astronomical Imaging
		Of course, a prism, being a big chunk of glass, would introduce a considerable amount of light loss and so will be made using mirrors, but the principles are similar.
		One interesting fact about a Dove prism is that the image rotates twice as fast as the prism and this will directly effect the operation of the field de-rotator.
		There is an additional correction for the optical property of the Dove prism where the image rotates twice as fast as the prism angle.
	www.ee.nmt.edu /~teare/fielddr.htm (1172 words)

	Interested in Color prism? Right place for it! Color Prism! (Site not responding. Last check: 2007-11-02)
		When degree by crystal separated the business media prism paint ordinary the much component of encountered is by to between the is a waves, surface to fl and greater two the is refracted a the interface outer applied light of absorbed the sections layer prism.
		Object common created by Dove prism on account information participant image and lie inverted it axis..I I am think Old though choosing a breed of dog this be not Williamsburg may positive..
		Wedge are used elements in beamsteering as prisms prism rectangular volume optical systems..
	1897233.sitesled.com /lc10-julio.html (2013 words)

	Del Mar Photonics News » News from our customers (Site not responding. Last check: 2007-11-02)
		At the University of Michigan, a fused silica dove prism and a glass dove prism, from Del Mar Photonics, are being used to to do total internal reflection Raman spectroscopy on glomeruli.
		Because the two dove prisms have different refractive indices, this provides some variability in the depth of penetration of the evanescent wave.
		Dove prisms are useful in this experiment and for many other applications.
	www.femtosecondsystems.com /news/?cat=6 (305 words)

	china dove prism Manufacturer -corner cube prism china Manufacturer, Supplier, Factory, Exporter
		We have been in the scooter industry for many years and have been distributing different designs of dove prism fit all transportation and entertainment needs.
		All our products sucha as dove prism are made under quality control system We do our best to supply our customers good quality products such as dove prism with competitive prices and on time deliveries.
		dove prism manufacturer of china,dove prism supplier of china,dove prism exporter of china,dove prism factory of china
	web-marketings.50webs.com /dove_prism.htm (137 words)

	[No title]
		The method uses a pair of crossed acousto-optic beam deflectors and a polygon mirror to emulate the mechanical dove prism.
		It is based on an analysis of a conventional dove prism.
		As illustrated in Figure 1 (b), a dove prism can be divided into three parts: the first part is a wedge prism to direct the incident beam to the bottom (or top) of the second part which functions as a mirror to reflect the incoming light.
	www.itl.nist.gov /lab/nistirs/itl-aodp.doc (1105 words)

	china right roof prism Manufacturer -right roof prism china Manufacturer, Supplier, Factory, Exporter
		we are professional manufacturer and supplier of right roof prism and other prisms in china.
		due to the effectiveness of our QC measures, our right roof prism series are currently being exported to clients in the usa, europe,japan, middle east and southeast asia.
		We offer a wide selection of quality right roof prism products at competitive prices, utilizing a state of the art computer system to assist customers with completion of specialized designs.
	web-marketings.50webs.com /right_roof_prisms.htm (233 words)

	Edmund Optics - TECH SPEC™ Prism Kit
		Prisms are extremely useful optical components for refracting, reflecting, reverting, and inverting images.
		This kit includes our most popular sized prisms in a number of configurations, and is an ideal kit for any optical laboratory, R&D facility, or integration firm.
		Prism types include wedge, rhomboid, dove, Schmidt, penta, right angle, trihedral, littrow, and equilateral.
	www.edmundoptics.com /onlineCatalog/displayproduct.cfm?productID=2588 (109 words)

	(WO/2000/057235) MULTI-BEAM SCANNER INCLUDING A DOVE PRISM ARRAY (Site not responding. Last check: 2007-11-02)
		An array of optical elements such as dove prisms separately rotates each of the beams about a central ray of the beam to eliminate blurred edges, skew, and variations in line thickness caused by the direction of propagation of acoustic waves in the AOM being at an angle to a scan direction.
		In particular, the amount of rotation is selected so that in the final image the direction in which illumination progresses across a cross-section of a beam is in a direction opposite the scan direction.
		Using photolithography and etching to form grooves in a substrate, and mounting the rods/prisms in the grooves on the substrate.
	www.wipo.int /pctdb/en/wo.jsp?KEY=00/57235.010215 (314 words)

	Static 35mm Adapter Solution [Archive] - The Digital Video Information Network
		Considering a roof/penta combo costs much less than a dove prism alone and without the need of additional instruments to revert the image left-right, the combo is a better choice.
		Also after playing with the roof and pentaprisms, I realize although the roof prism is smaller at 28x28mm compare to the pentaprism at 24x35mm, it's possible to "see" approximitly the full frame passed from the pentaprism of 24x35mm.
		This will still work fine, but I have to place the prism further away from the diffuser in order for the camcorder to zoom in far enough to capture the entire frame but not be cut off by the roof.
	www.dvinfo.net /conf/archive/index.php/t-18690.html (14209 words)

	Product
		Dove prisms have an unusual and very interesting characteristic.
		If you look through the prism and rotate it around a longitudinal axis, the iamge rotates through an angle twice as much as you turn the prism.
		Dove Prism A:38mm B:100mm C:54mm D:53mm Grade 2
	www.anchoroptics.com /catalog/product.cfm?id=66 (44 words)

	AOSA: Catalog: Optical Elements: Prisms: Dove Prism
		Looking longitudinally through the prism and rotating it, image rotate through twice as much as the prism.
		Dove prism is a truncated version of a right-angle.
		If our catalogue´s Dove prisms don´t fit your needs, please tell us your mount´s requirements using the following form and we will quote you back as soon as possible:
	www.aosa.es /Eng/Catalog/Optics/Prisms/dove-prism.htm (260 words)

	EOL Surplus - Optical Prisms and Beamsplitters For Sale (Site not responding. Last check: 2007-11-02)
		Penta prism, windows 43 mm h x 41 mm w, O.A.L. 71 mm.
		It can also be seen looking through the prism in photo 1.
		Prism assembly, dove prism with bonded right angle prism.
	eolsurplus.com /Prisms.html (268 words)

	Optical Windows, Prisms, Lens, BK7, Fused Silica, Sapphire, CaF2, MgF2
		There are many types of prism, each having a particular geometry, used to achieve the reflections required to perform a specific imaging task.
		Our micro Penta Prism and Right Angle Prism are widely used in optical communication, such as optical switches.
		A transparent optical component consisting of one or more pieces of optical glass with surfaces so curved (usually spherical) that they serve to converge or diverge the transmitted rays from an object, thus forming a real or virtual image of that object.
	www.newrise-llc.com (275 words)

	Digital Praise
		The Dove Foundation, one of the best known advocates of family-friendly entertainment.
		Dove reviewers rated Adventures in Odyssey(r) and the Treasure of the Incas and Adventures in Odyssey(r) and the Sword of the Spirit "Family Approved" and gave both titles a "four-Dove" rating for quality.
		A: The best way to solve the Prism puzzles is to work from the outside in.
	www.digitalpraise.com /index.html (8310 words)

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