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Topic: Dichroic prism

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	Dichroic - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-22)
		A dichroic material is one which either causes light to be split up into distinct beams of different wavelengths (colours), or, one in which light rays having different polarizations are absorbed by different amounts.
		An example is the dichroic prism, used in some camcorders, which uses several coatings to split light into red, green and blue components for recording on separate CCD arrays.
		The second meaning of dichroic refers to a material in which light in different polarisation states travelling through it experience a varying absorption.
	www.sterlingheights.us /project/wikipedia/index.php/Dichroic (347 words)

	Dichroic prism and projection display apparatus - Patent 6072635
		The dichroic prism according to claim 1, further including an adhesive layer joining the prisms, the four prisms each being a rectangular prism with a right vertical angle, and the first dichroic plane is made to be at least one of concave shape and convex shape by adjusting a thickness of the adhesive layer.
		The dichroic prism according to claim 2, further including an adhesive layer joining the prisms, the four prisms each being a rectangular prism with a right vertical angle, and the first dichroic plane is made to be at least one of concave shaped and convex shaped by adjusting a thickness of the adhesive layer.
		In the dichroic prism 10 of this embodiment, the red reflecting dichroic plane 15 is inclined symmetrically with respect to a line of intersection of the red reflecting dichroic plane 15 and the blue reflecting dichroic plane 16 by partly changing the thickness of the adhesive layer 118 for joining the rectangular prisms 11-14 together.
	www.freepatentsonline.com /6072635.html (5283 words)

	Prism (optics) - Wikipedia, the free encyclopedia
		In optics, a prism is a device used to refract light, reflect it or break it up (to disperse it) into its constituent spectral colours (colours of the rainbow).
		The traditional geometrical shape is that of a triangular prism, with a triangular base and rectangular sides.
		Dispersive prisms are used to break up light into its constituent spectral colours because the refractive index depends on frequency (see dispersion); the white light entering the prism is a mixture of different frequencies, each of which gets bent slightly differently.
	en.wikipedia.org /wiki/Prism_(optics) (314 words)

	Dichroic - Wikipedia, the free encyclopedia
		A dichroic material is one which either causes visible light to be split up into distinct beams of different wavelengths (colours), or, one in which light rays having different polarizations are absorbed by different amounts.
		In these crystals, the strength of the dichroic effect varies strongly with the wavelength of the light, making them appear to have different colours when viewed with light having differing polarisations.
		A mirror, filter, or beam splitter is referred to as dichroic in the colour-separating first sense; a dichroic crystal or material refers to the polarization-absorbing second sense.
	en.wikipedia.org /wiki/Dichroic (355 words)

	Cross dichroic prism, method of making the same, and full-color projector using the same - Patent 6101041
		Among the four triangular prisms, for example, a given prism and at least one of the prisms adjacent thereto are formed by processing a single prism member, whereas the remaining two triangular prisms opposed thereto are formed by processing the same or another single prism member.
		The height of the triangular prisms 11, 12 is greater than that of the triangular prisms 21, 22, whereby the prisms 11, 12 protrude from the upper and lower sides of the prisms 21, 22.
		Assuming one side of the horizontal cross section of the prism 1, i.e., L.sub.1, to be 40 mm, the average refractive index n to be 1.50, and the light valve 101 to be disposed close to the entrance face 20b.sub.2 of the prism 1, the air-converted length L becomes 26.7 mm.
	www.freepatentsonline.com /6101041.html (6569 words)

	Dichroic prism - Wikipedia, the free encyclopedia
		They are usually constructed of one or more glass prisms with dichroic optical coatings that selectively reflect or transmit light depending on the light's wavelength.
		That is, certain surfaces within the prism act as dichroic filters.
		A trichroic prism assembly is a combination of two dichroic prisms which are used to split an image into red, green and blue components so they can be separately detected on three CCD arrays.
	en.wikipedia.org /wiki/Dichroic_prism (235 words)

	Cross dichroic prism - Patent 6327092
		A cross dichroic prism according to claim 1, characterized in that two of said four square pillar prisms are isosceles square pillar prisms of which the two sides are equal and the other two are square pillar prisms of which the sides differ in length from one another.
		A light combining optical system having a cross dichroic prism according to claim 6, characterized in that three divergent lights to be combined are caused to enter the prism from the one small light transmitting surface and light passing surfaces on the opposite sides of the light transmitting surface.
		The cross dichroic prism according to the prior art comprises four rectangular prisms cemented together as previously described and therefore suffers from the problem that it is bulky and heavy.
	freepatentsonline.com /6327092.html (3670 words)

	World Intellectual Property Organization (Site not responding. Last check: 2007-10-22)
		The dichroic optical coatings used for color separation cooperate with the anti-reflection coating layers at the TIR surface in achieving this phase control function; which combined the 90 degree phase difference at the TIR surface corrects for the image degradation contributed by the polarizing beam splitter.
		The polarizing beam splitter 22 comprises a pair of prisms 101 and 102, and an optical, multi-layer interference coating 103 interposed between the pair of prisms 101 and 102.
		A dichroic coating 54 is formed on reflecting surface 51b for reflecting the green component of the light and for transmitting the blue component of the light.
	www.wipo.int /ipdl/IPDL-CIMAGES/view/pct/getbykey5?KEY=01/69305.010920&ELEMENT_SET=DECL (6576 words)

	Dichroic prism (Site not responding. Last check: 2007-10-22)
		A dichroic prism is a prism that splits light into two beams of differing wavelength (colour).
		A light beam enters the first prism (A) and the blue component of the beam is reflected from a high-pass filter coating (F
		The blue beam undergoes total internal reflection from the front of prism A and exits it through a side face.
	www.sciencedaily.com /encyclopedia/dichroic_prism (264 words)

	Optical system for liquid crystal projector - Patent 5389982
		The polarized light prism and the reflection liquid crystal panels causes the optical path of the optical system to be shorter, for thereby improving the resolution of the color of the image and for also simplifying the construction of the optical system.
		The light separation/composition prism is capable of separating a light into respective light elements in the case of receiving the light in a receiving direction.
		Furthermore, the dichroic prism is a costly, heavy and fragile element.
	www.freepatentsonline.com /5389982.html (3091 words)

	United States Patent Application: 0040095652
		Incidentally, in the cross dichroic prism 150, dielectric multi-layer film for reflecting red light and a dielectric multi-layer film for reflecting blue light are formed in approximate X-shape along a border of four right-angle prisms, the dielectric multi-layer film combining the three color lights.
		Thereafter, the cross dichroic prism 150 is set on the support jig 33 in the setting step S3 and the liquid crystal panels 141R, 141G and 141B to be adjusted are attached to the liquid crystal panel holder 317 of the six-axis position adjusting unit 31.
		Thereafter, the transmitted light beam is reflected by the liquid crystal panels 141R, 141G and 141B and the reflected light beam is entered again to the cross dichroic prism 150 to be refracted by the beam splitter 451 to be received by the CCD camera 41.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1="20040095652".PGNR.&OS=DN/20040095652&RS=DN/20040095652 (7311 words)

	Printing apparatus for photosensitive media using dichroic prism in illumination path - US Patent 6624949 (Site not responding. Last check: 2007-10-22)
		Dichroic prisms provide combinations of dichroic surfaces between prisms, cemented together in arrangements such as in the familiar X-cube or X-prism, Philips prism, and related devices.
		Dichroic combiners, typically X-cubes or X-prisms and Philips prisms, have been widely used in digital projectors for combining the optical paths of modulated light, incident from a number of different axes, into a single, common axis for projection.
		Output light from dichroic prism 26 goes to a condenser lens 42 and to a field lens 50 which directs the illumination beam to a uniformizer 44, such as an optical tunnel, integrating bar, or lenslet array, that provides a uniform illumination field for incident light beam L.
	www.patentstorm.us /patents/6624949.html (7027 words)

	Cross dichroic prism, method of making the same, and full-color projector using the same - US Patent 6101041 (Site not responding. Last check: 2007-10-22)
		It also discloses that, as a result, the optical axis deviation among the individual colors, i.e., image deviation, in a quadrangular dichroic prism whose sides each have a length of 40 mm can be suppressed to 13 µm, which is about 1/3 of the pixel size of normally employed light valves, i.e., 40 µm.
		When the individual prisms 11, 12, 21, 22 constituting the prism 1 have refractive indexes different from each other, refraction occurs at the boundaries between the individual prisms, whereby the output light beams would not be in parallel to each other, with their optical axes forming an angle of θ therebetween.
		of the cross section of the prism 1 is set to 150 mm under the same refractive index condition, the amount of deviation caused by the refractive index difference is only 4 µm, and thus can be suppressed to a deviation amount sufficiently smaller than the pixel pitch.
	www.patentstorm.us /patents/6101041.html (6881 words)

	Dichroic prism -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-22)
		They are usually constructed of one or more glass prisms with (Click link for more info and facts about dichroic) dichroic (Click link for more info and facts about optical coating) optical coatings that selectively reflect or transmit light depending on the light's wavelength.
		One common application of dichroic prisms is in some (A portable television camera and videocassette recorder) camcorders and high-quality (A camera that encodes an image digitally and store it for later reproduction) digital cameras.
		A light beam enters the first prism (A) and the blue component of the beam is reflected from a high-pass (Device that removes something from whatever passes through it) filter coating (F
	www.absoluteastronomy.com /encyclopedia/d/di/dichroic_prism.htm (273 words)

	Dichroic prism (Site not responding. Last check: 2007-10-22)
		They are usually constructed of one or more glassprisms with dichroic optical coatings that selectively reflect or transmit light depending on the light's wavelength.
		A trichroic prism assembly is acombination of two dichroic prisms which are used to split an image into red, green and blue components so they can be separatelydetected on three CCD arrays.
		The remaining green component of the beam travels through prism C. The trichroic prism assembly can be used in reverse to combine red, green and blue beams into a coloured image, and is used inthis way in some projector devices.
	www.therfcc.org /dichroic-prism-123816.html (255 words)

	Prism (optics) (Site not responding. Last check: 2007-10-22)
		In optics, a prism is a device used to reflect light or to break it up (to disperse it) into its constituent spectral colors (colors of the rainbow), traditionally built in the shape ofa right prism with triangular base.
		The angle that the beam of light makes with the interface as well as the refractive indices of the two media determine whether it is reflected orrefracted, and by how much (see refraction, total internal reflection).
		Dispersive prisms are used to break up light into its constituent spectral colors because the refractive index dependson frequency (see dispersion); the white light entering the prism is a mixture of different frequencies, each of whichgets bent slightly differently.
	www.therfcc.org /prism-optics--24576.html (253 words)

	DJzone DJ Magazine New Lights
		The Fascinator's triangular prism is made of dichroic colored glass.
		The colors produced by the Fascinator are exceptionally vibrant, thanks to the combination of the color wheel and the prism's dichroic colored glass.
		Extravagant though its effects may be, the Fascinator is one "extravagance" that won't break the budgets of clubs and DJs.
	www.djzone.net /pg/0109/ln010904.shtml (498 words)

	Dichroic prism -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-22)
		That is, certain surfaces within the prism act as (Click link for more info and facts about dichroic filter) dichroic filters.
		These are used as (Click link for more info and facts about beam splitter) beam splitters in many (An instrument designed to aid vision) optical instruments.
		The blue beam undergoes (Click link for more info and facts about total internal reflection) total internal reflection from the front of prism A and exits it through a side face.
	www.absoluteastronomy.com /encyclopedia/D/Di/Dichroic_prism.htm (273 words)

	Prism (optics) (Site not responding. Last check: 2007-10-22)
		Ophthalmic prisms useful in management of tropias, phorias: educate patients on how their new lenses with prism will wor...
		apparent absence of a prism effect for the 14.25...
		line of research is that prism adaptation and interlimb...
	hallencyclopedia.com /Prism_(optics) (466 words)

	Musikhaus Thomann Cyberstore - (Site not responding. Last check: 2007-10-22)
		Prism: 3-facet -prism rotating in bothdirections at different speeds.
		Prism: 3-facet -prismrotating in both directions at different speeds.Dimmer/Shutter: Full range dimming and variable stroboeffect.
		Prism: 3-facet prism rotatingin both directions at different speeds.
	www.thomann.de /gruppe-LISC-2.html?iwid=5 (2189 words)

	Dichroic Filters (Site not responding. Last check: 2007-10-22)
		Anexample is the dichroic prism, used in some camcorders, which uses several coatings to split light into red, green and blue components for recording onseparate CCD arrays.
		The second meaning of dichroic refers to a material in which light in different polarisation states travelling through itexperience a varying absorption.
		In these crystals,the strength of the dichroic effect varies strongly with the wavelength of the light, making them appear to have differentcolours when viewed with light having differing polarisations.
	www.witchware.com /File/47147-Dichroic.Filters.Html (444 words)

	What's New at Alltronics
		The purpose of the condenser lens was also to collimate the light so that the dichroic prism would work correctly as the coatings are angle sensitive.
		The light is reflected off of prism faces that only reflect those colors towards the windows where the "silvered" faces of the micro-mirror spatial light modulators would have displayed their bright faces.
		The facet angles of the prism are complex, and these probably cost hundreds of dollars if purchased new and individually, if you could by it....
	www.alltronics.com /whatsnew.htm (2120 words)

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