Opera Glasses " Fashion Wear, Spyware Or Optical Instrument?
Opera glasses developed from a series of other inventions. All this started in 1608 when the Dutch optician Hans Lipperhey created binoculars consisting of two parallel telescopes. Their magnification capability was a (very impressive for the time) x3. Within one year the Italian mathematician and philosopher Galileo Galilee made massive improvements to the techniques and types of lenses used in telescopes, thereby increasing the magnification ability to x30.
Binoculars gave a much wider field of view than telescopes, but since they had 2 convex lenses, the picture that you saw was inverted. It wasn't until 1617 that Anton Schyrle added an additional lens to re-invert the image. In 1758 John Dollond of England invented the achromatic (color free) lens and thereby solved the problem of color distortion.
One of the final important developments in binocular technology happened when the Italian gunnery officer Ignazio Porro invented prismatic binoculars, thereby once again increasing the field of vision dramatically and making much larger magnification possible.
Opera glasses are mentioned for the first time in London newspaper advertisements dating back to 1730. These were not binoculars, but small Galilean telescopes. They were both used decoratively and to watch opera with. The bodies were often inlaid with gems, mother of pearl, ivory, enamel and other types of decorations.
Binocular-type opera glasses made their appearance for the first time during the '20s in Vienna. These early types were basically still only two small telescopes with a connecting bridge. The individual telescopes had to be focused by pulling out the tubes.
They soon became highly fashionable. Going to the opera without one of these was social suicide. The designs became increasingly elaborate. Often you would find an optician, a painter and a goldsmith working on the glasses before they were finally ready for their discerning owners. Once at the opera, they were not only used to watch the stage though - they were also regularly used to check out the other guests to make sure there wasn't by any chance someone with a more elaborate set of opera glasses!
The design was further improved substantially when it became possible to adjust both lenses at the same time using a small wheel in the center. This made opera glasses even more popular and soon everyone who was anyone had to have one. They were highly regarded as gifts - as one can clearly see when you study the inscriptions on many of these glasses dating back to the 17th century.
Although there are nowadays a multitude of different types of opera glasses on the market, they fall into two categories: monocular and binocular. Within those categories you get all the colors of the rainbow and all the styles and materials you can think of. You even get opera glasses with handles and reading lights. One of the more unusual types is one with a jealousy glass - so you can unobtrusively watch someone else in the audience! - 18423
Binoculars gave a much wider field of view than telescopes, but since they had 2 convex lenses, the picture that you saw was inverted. It wasn't until 1617 that Anton Schyrle added an additional lens to re-invert the image. In 1758 John Dollond of England invented the achromatic (color free) lens and thereby solved the problem of color distortion.
One of the final important developments in binocular technology happened when the Italian gunnery officer Ignazio Porro invented prismatic binoculars, thereby once again increasing the field of vision dramatically and making much larger magnification possible.
Opera glasses are mentioned for the first time in London newspaper advertisements dating back to 1730. These were not binoculars, but small Galilean telescopes. They were both used decoratively and to watch opera with. The bodies were often inlaid with gems, mother of pearl, ivory, enamel and other types of decorations.
Binocular-type opera glasses made their appearance for the first time during the '20s in Vienna. These early types were basically still only two small telescopes with a connecting bridge. The individual telescopes had to be focused by pulling out the tubes.
They soon became highly fashionable. Going to the opera without one of these was social suicide. The designs became increasingly elaborate. Often you would find an optician, a painter and a goldsmith working on the glasses before they were finally ready for their discerning owners. Once at the opera, they were not only used to watch the stage though - they were also regularly used to check out the other guests to make sure there wasn't by any chance someone with a more elaborate set of opera glasses!
The design was further improved substantially when it became possible to adjust both lenses at the same time using a small wheel in the center. This made opera glasses even more popular and soon everyone who was anyone had to have one. They were highly regarded as gifts - as one can clearly see when you study the inscriptions on many of these glasses dating back to the 17th century.
Although there are nowadays a multitude of different types of opera glasses on the market, they fall into two categories: monocular and binocular. Within those categories you get all the colors of the rainbow and all the styles and materials you can think of. You even get opera glasses with handles and reading lights. One of the more unusual types is one with a jealousy glass - so you can unobtrusively watch someone else in the audience! - 18423
About the Author:
Jeff B. has always loved the theater and opera, he currently helps run an opera glasses retail site where they sell opera glasses. Including Opera Glasses with handle, flashlight, chain and more!
posted by X - Men at
12:10 AM
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