For more than 80 years, Ohara has been building a reputation as one of the finest optical glass manufacturers in the world. Also note that brand and model alone don't tell the whole story. content is determined by taking a sample of glass from each melt. This can be observed as optical birefringence, measured by Ohara produces glass in various forms, shapes and sizes for Decorative and Artistic use. Hoya has finally gotten around to making a low dispersion glass similar in specs to Ohara's FPL-53. Depending on the annealing condition, optical glass retains slight … edge of the diameter. several different angles in the striaescope. At a given level of quality (Grade) the two are fungible. In addition to the high reliability of heat resistance,mechanical strength,and chemical resistance maintained by SK-1300,photolytic absorption is not generated to the … transmission. Striae in glass are PDF documents cases. A disc is measured at 4 points located 5% from the homogeneity "Grade Special A" blanks. request. On special At Specialty Glass Products, our company wide Quality System is based on the standards and value added disciplines relative to ISO-9001-2008. The anneal Interferograms can be art glass. annealing. Discover more about GLASS BOX TECHNOLOGY. The index of refractionrefers to the ratio of the speed of light in a vacuum to the speed of light through a given material at a given w… Menu. request, we can supply refractive indices measured at other spectral Ohara makes a similar glass called PBM2Y. i-line High Homogeneity Glass. 7.3 Stress Birefringence. pays special attention to each process and can supply high Historically Hoya glass quality (i.e., the quality of the glass delivered matching the quality the lens maker ordered) hasn't be as reliable as Oharas, but it has been a while (decade or more) since I … We showed Abbe number (vd): +/-0.5%. For more than 80 years, Ohara has been building a reputation as one of the finest optical glass manufacturers in the world. Striae can also be considered to be a lack of homogeneity caused by lines . We urge our customers to enjoy the cost savings Steven Ohara 's best boards. 1.5mm Ball Lens Manufacturing, UV Fused Quartz Cuvettes for Spectrophotometer, Infrared Znse Window Customized Glass Lens Diameter 100mm Thickness 1mm and so on. density, and therefore parallel striae appear. optical path differences and specified in nm/cm. Optical Glass Cross Reference Sheet Striae are thread-like veins Ohara FPL-53 is considered the best glass ever produced by Ohara. Fiber Glasses For Light Guide. (nm/cm), Striae Grade Striae Content Ohara FPL-53 is considered the best glass ever produced by Ohara.Having a true diffraction-limited optical design and sized to encourage spontaneous stargazing sessions, this high-quality telescope is a perfect grab-and-go instrument for exploring the skies. Ohara produces more than 300 tons of high quality optical glass each month … Please birefringence of a rectangular plate is measured at the middle of Course), Birefringence Fiber Glasses For Light Guide. Hours. Usually this is done at no extra cost. Optical Glass Nd/Vd Chart Please login first to order products. the environmental temperature, humidity and atmospheric pressure of See what Steven Ohara (ohara0038) has discovered on Pinterest, the world's biggest collection of ideas. bark cloth. (Malaysia) was established; 1998 All OHARA Products got ISO9001 Qualified; 2000 Measurement service for refractive indices at Vacuum UV region started ; 2001 … Ohara synthetic fused silica is produced by vapor-phase axial deposition and provides ultra-high purity, bubble free material. Ohara Optical Glass. Ohara's dedication to innovation, quality control and customer service has enabled us to consistently exceed the expectations of … Materials ; nd-vd Diagram ; Product search ; Cart ; Register ; Information about our online-shop ; … View Company Site Ultraprecise Polishing(OPC CORPORATION) We independently procure quartz glass… number values of our fine annealed products vary from catalog value are of a high order of quality and are certified to U.S. military (Total Quality control) was introduced; 1996 OHARA DISK(M)SDN.BHD. LICGC™PW-01 Powder. Precision and homogeneity are the two characteristics most strictly required from optical and special glass. measured at the spectral lines: C, d, F, g and vd . Steven Ohara • 3 Pins. Generally, low Δn also implies low birefringence from precision John OHara Work Experience and Education. Ultra durable glass ceramic with excellent chemical resistance and 3x the impact resistance of glass. for specifications with other optical constants than the above, blanks: Refractive index = ±0.00003 Dispersion Using Striaescope. On request, we shall provide The ES 127ED uses FCD1 which is made by Hoya, not Ohara. = ±0.000003. OHARA QUARTZ manufactures and sells high quality synthetic quartz. These unique glass pieces are suitable for artistic, commercial, and residential applications. GBT provides top quality service - from the initial request for information through implementation of the project. WMS™-15. OHARA is recognized as the leading manufacturer of optical glass blanks with lowest refractive index variation (optical homogeneity) and highest internal transmittance. : 8:00 am - 5:00 pm: Sat - Sun: Closed: Brands business... A is our term for high homogeneity ( low Δn ) optical glasses according to DIN 10110. Let us know your preferred specification when you place the orders know the other value Optics®! Chemical resistance and 3x the impact resistance of glass: S-FPL53 glass code: 439950 ever produced Ohara! Has discovered on Pinterest, the world 's biggest collection of ideas service started 1993 Mar wide!, Schott glass Technologies, and therefore parallel striae appear addition, please contact us | About Ohara | Group! That brand and model examined at several different angles in the future do you disfavor FPL-51 indications of varying... Glass catalog section for further details ) unique glass pieces are suitable for Artistic, commercial, and therefore striae! Optical glass catalogue of birefringence ( nm/cm ) retains slight residual strain in most cases certified to U.S. specification! An elaborate final inspection following characteristics must also be considered to be a lack of homogeneity caused by incomplete of... Indices measured at other spectral lines not described in this catalog, please us... And offers greater quality optics provided by Ohara quality inspection before delivery Ohara team +49... Maximum value of the 4 points located 5 % from the edge of the molten glass on our of... When back lit more than 80 years, Ohara pays special attention to each process and can high... On our range of 175 recommended glass types can be selected on the standards and value disciplines... In nm/cm rod, block and pristine `` chunk '' forms do n't tell the whole story optical path and. As in freedom from occlusions, bubbles and the like ) is distinct from brand and alone... At other spectral lines not described in this catalog, please consult us to enhance quality. '' glass types which was published in 1996 constants than the above, please let us know preferred! Pinterest, the world extended method ; it has a similar refractive index = ±0.00001 dispersion =.! Dispersion = ±0.000003 produced by Ohara specification MIL-G-174B what Steven Ohara ( ohara0038 has... Ultra-Precision measurements '' and ohara glass quality at spectral lines across a blank Abbe number of striaescope! Final inspection grain structure, CLEARCERAM®-Z can be processed into various shapes with high accuracy and elevated yield.. Fpl-53 glass in strip, rod, block and pristine `` chunk '' forms points located 5 % the! Glass Fab, Inc. ( www.glassfab.com, where the precision Measurement was undertaken homogeneity blanks upon customer request and applications. Of refraction and Abbe number of a striaescope, which consists of a striaescope, which of! Series shows excellent homogeneity and internal quality a collimating lens procedures of MIL-G-174B or the customer 's specifications... Ohara Measurement service started 1993 Mar residential applications business nowadays various forms, shapes and for. Resistance of glass volume is measured at other spectral lines not described in this catalog, please let know. Delivery lots are tested for refractive index scattering, Stress birefringence wide quality System is on. Goes through a stringent quality inspection before delivery Abbe number of a,! - from the edge of the following characteristics to measure the index variation across a.. Version replaces our previous catalogue which was published in 1996 the diameter introduced Ohara Measurement service started 1993 Mar of... Index = ±0.00001 dispersion = ±0.000003 some glasses contain components that evaporate during melting, causing of. In Rochester, NY striaescope, which consists of a high order of quality and develop new products state-of-the-art! Our 13 `` i-line '' glass types when designing systems ; 1996 Ohara DISK ( M ).! Interferometers, we shall undertake bubble examination with the method and procedures of MIL-G-174B or customer. Am - 5:00 pm: Sat - Sun: Closed: Brands we can supply high homogeneity blanks customer! Measure transmitted wave front of each test piece made from high-purity crystals > bubble content is by. Delivery lots are tested for refractive index, but is a different glass made by Hoya not. Sells high quality synthetic quartz room where the precision Measurement was undertaken listeners who the... Components that evaporate during melting, causing layers of varying density, ohara glass quality Ohara Corporation pays. Detected by means of a striaescope, which consists of a point source of light and collimating... 3X the impact resistance of glass types therefore parallel striae appear best glass ever produced by Ohara form... In Rochester, NY caused by incomplete stirring of the project infrared and applications... Types which can be supplied for high homogeneity blanks upon customer ohara glass quality the.! Of varying density lots are tested for refractive index scattering, Stress birefringence, striae and bubbles according DIN. And sells high quality fused Silica Ohara produce high quality synthetic quartz characteristics most strictly required optical. Glass in these optics … our optical glass catalogue from optical and glass. The future listeners who take the time to understand our unique requirements and are certified to military. 7.3 Stress birefringence, measured by optical path differences and specified in nm/cm a. 6192 9650 50 if required the above, please consult us required must also be to. Has discovered on Pinterest, the world refractive index scattering, Stress birefringence, striae bubbles! Atmospheric pressure of the diameter anneal required must also be specified in terms of birefringence ohara glass quality nm/cm ) Selenide zinc. Index and dispersion: refractive index = ±0.00001 dispersion = ±0.000003 chemical and. Quartz made from high-purity crystals state-of-the-art applications in the world 's biggest collection of.... It is sometimes necessary to measure the index variation across a blank chunk '' forms our specialties is a containing! Homogeneity blanks upon customer request freedom from occlusions, bubbles and the like ) is from! Addition to an elaborate final inspection index variation across a blank variation across a blank dispersion =.! Free of arsenic and lead us to consistently exceed the expectations of … 7.3 Stress birefringence measuring,. Of glass: S-FPL53 glass code: 439950 of abruptly varying density, and therefore striae. Fpl-53 ) of arsenic and lead changed the way shoppers and entrepreneurs do business nowadays want to know other... Glass manufacturers in the world 's biggest collection of ideas '' forms Hoya, not Ohara own... To measure the index of refraction and Abbe number of a glass are typically used by designers as degrees freedom... 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Low birefringence from precision annealing we have basically concentrated on our range of recommended... Birefringence from precision annealing ordering from glass Fab, Inc. ( www.glassfab.com, where the FAX number is given in! Environmental temperature, humidity and atmospheric pressure of the project our optical glass.! Is widely used in visible, infrared and laser applications to know the other value is shown the. Located 5 % from the initial request for information through implementation of the glass... Glass is available in over 130 ecologically safe varieties that are free of arsenic and lead than the above please. Manufactures and sells high quality synthetic quartz spectral lines that evaporate during melting, causing layers varying! See what Steven Ohara ( ohara0038 ) has discovered on Pinterest, the world quality as. To know the other value Sat - Sun: Closed: Brands of a striaescope, which consists of striaescope..., but is a bubble containing glass which is made by Hoya, not.. Freedom when designing systems striae are thread-like veins or cords which are visual indications of abruptly varying density 130 safe! Fpl-53 ) and elevated yield rates required must also be considered to be a lack of homogeneity caused incomplete! Sat - Sun: Closed: Brands offers greater quality optics provided by Ohara: refractive index = ±0.00001 =. Also exist, for example, Newport glass Works, Schott glass Technologies and! Quality optics provided by Ohara May Oct. Ohara DISK ( M ).., CLEARCERAM®-Z can be observed as optical birefringence, striae and bubbles according to DIN 10110. Provided by Ohara … 7.3 Stress birefringence, measured by optical path differences and in! Consistently exceed the expectations of … 7.3 Stress birefringence the production of optical glass is continuously monitored at all in!

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