In 1968, two years after the launch of the F Program, Canon researchers successfully produced a synthetic fluorite crystal. But numerous hurdles remained before fluorite could be used in a …
Fluoride crystal, typically exemplified by fluorite, has to be grown in a vacuum ambient atmosphere with a high temperature of 1,000°C or higher, requiring advanced devices as well as high-level processing technology. Canon Optron succeeded in mass production of fluorite in 1968. ... Canon Optron, Inc. Optical Crystals ...
TOKYO, November 7, 2019—Canon Inc. and Canon Optron, Inc. announced today that this year marks the 50th anniversary of the release of the world's first lens for interchangeable-lens cameras targeting ordinary consumers to …
Canon's super telephoto lenses are instantly recognisable thanks to their iconic white coating, but why is it white? Discover the story behind Canon's white lens paint.
The only catch is that natural fluorite crystals, because of their small size and impurities, do not meet all the requirements for a camera lens. In the 1960s, Canon pioneered synthetic fluorite lens elements, and became the only manufacturer to incorporate fluorite in its autofocus lenses for SLR cameras.
Canon grows its own synthetic fluorite crystals and developed techniques for grinding the fragile substance into flawless lens elements. ... The first Canon lens to contain a fluorite element was the FL-F 300mm f/5.6, produced in 1969. Spherical lenses are the easiest lens shape to make, but they disperse the rays of light passing through them ...
Canon grows its own synthetic fluorite crystals and developed techniques for grinding the fragile substance into flawless lens elements. ... The first Canon lens to contain a fluorite element was the FL-F 300mm f/5.6, produced in 1969. Spherical lenses are the easiest lens shape to make, but they disperse the rays of light passing through them ...
Canon Australia and Canon Optron, Inc. announced today that this year marks the 50th anniversary of the release of the world's first lens for interchangeable-lens cameras targeting ordinary consumers to employ synthetic fluorite: the FL-F300mm f/5.6 (released in May 1969).
Canon grows its own synthetic fluorite crystals and developed techniques for grinding the fragile substance into flawless lens elements. Perfectly spherical lenses paradoxically cause …
Page 19 of 23 - The superiority of fluorite glas: just a myth? - posted in Refractors : like pollen, pine sap, aphid poo, etc. Dont you mention in front of my flourite lens. Dont even think about Why are you the only poster to continually misspell the name of crystal in question? Look at the thread title. The material is not based on flour. That would be a rather cloudy lens!
Canon Inc. actually grows their own synthetic fluorite crystals for their high-end telephoto lenses and Nikon also offers fluorite lenses and fluorite coated lenses. A less impressive but important use of fluorite is in cement mix, which is what this mine mostly produced it for. The cabin has definitely seen better days, but is holding up well.
Fluoride crystal, typically exemplified by fluorite, has to be grown in a vacuum ambient atmosphere with a high temperature of 1,000°C or higher, requiring advanced devices as well …
Read about advanced tech in Canon lenses to reduce aberrations and improve image quality, including fluorite, aspherical, BR and UD (ultra-low dispersion) lenses.
In order to reduce the cost factor, Canon's optical engineers developed cost-effective synthetic Fluorite crystals that could maintain equal measures of chromatic aberration control and …
TOKYO, November 7, 2019—Canon Inc. and Canon Optron, Inc. announced today that this year marks the 50th anniversary of the release of the world's first lens for interchangeable-lens cameras targeting ordinary consumers to employ synthetic fluorite, the FL-F300mm f/5.6 (released in May 1969).
Fluorite had been a focus of attention for centuries. In the 1800s, natural calcium fluoride crystals were already being used as objective lenses in microscopes. Later, attempts were made to produce synthetic fluorite crystals for use as lenses in larger instruments such as telpes.
Canon, in its pursuit of progress in imaging capabilities, was keen on utilizing fluorite in its photography lenses, set out to develop its own technology for forming large, high-purity …
Page 1 of 2 - Fluorite manufacturing - posted in Refractors : Hello, I thought Id post this since its of interest to refractor-philes. This is a couple of blog posts by Ted Ishikawa as he visited the Canon Optron plant which manufactures fluorite lenses: Whats interesting (to me anyway) is the raw fluorite sample presented to Ted which hell be displaying at NEAF. I wont …
Fluorite had been a focus of attention for centuries. In the 1800s, natural calcium fluoride crystals were already being used as objective lenses in microscopes. Later, attempts were made to produce synthetic fluorite crystals for use as lenses in larger instruments such as telpes.
Large natural fluorite crystals are likely to be flawed, and very, very expensive. I would think that synthetic crystals would be much more flawless and a lot cheaper (as well as more uniform in their optical properties). Do optics even require a crystalline structure, as opposed to bulk (amorphous) fluorite? ... Canon make the vast majority of ...
Canon Optron undertakes all parts of the fluorite lens production process, from crystal production to processing, grinding, and evaporation (vapor deposition).
To overcome these problems, Canon set about growing its own synthetic fluorite crystals, and in large enough quantities to create photographic lenses from them. The next hurdle was to …
Besides, we can take "fluorite" as an adjective in that sentence. Glass is NOT a crystal! That is another likely source of confusion, because fluorides are possible additives to optical glass. Canon Inc. produces synthetic fluorite crystals that are used in …
This is what is properly called synthetic fluorite. The term, correctly used does not refer to any glass, melt, or amalgum. ... the crystals can better be grown under controlled laboratory conditions to produce large, clear, ... The big white telephotos with fluorite gave Canon a big advantage for sports/wildlife photography for a time period ...
Optron (Canon-Optron) is the company largely credited for being the first to successfully grow Fluorite crystals in large batches in support of Canon's burgeoning high-end SLR lens business. ... (SD) glass being referred …
Canon Inc. produces synthetic fluorite crystals that are used in their more expensive telephoto lenses. Exposure tools for the semiconductor industry make use of fluorite optical elements for ultraviolet light at wavelengths of about 157 nanometers. Fluorite has a uniquely high transparency at this wavelength.
Expert news, reviews and videos of the latest digital cameras, lenses, accessories, and phones. Get answers to your questions in our photography forums.
These lenses, made from synthetically crystalized fluorite, were the product of 5 years' of no-effort-spared development and production by Canon Optron. The Smithsonian Astrophysical Observatory incorporated these lenses into …
A batch of synthetic crystals. Synthetic lightsaber crystals were manufactured within a machine known as a geological compressor. The original purpose of the compressor was to replicate geological conditions on distant worlds in a laboratory setting, and it was easily adapted for creating synth-crystals; simply replicating the geological processes that create crystals.
38 rowsTOKYO, July 2, 2020—Canon Inc. announced today that its …
