Convex Glass
Posted in Uncategorized on 03/02/2010 08:40 pm by admin |
 VINTAGE ART DECO CONVEX BUBBLE GLASS FLORAL FRAME $33.99 (2 Bids) Time Remaining: 8h 32m |
 ViINTAGE CONVEX BUBBLE GLASS OCTAGON FRAME $34.99 Time Remaining: 28d 21h 58m Buy It Now for only: $34.99 |
 ANTIQUE OVAL CONVEX GLASS FRAME WITH NICE OLD ICE SKATERS PRINT $52.45 (4 Bids) Time Remaining: 11h 55m |
 ANTIQUE GRAIN PAINTED OCTAGONAL OVAL CONVEX BUBBLE GLASS PICTURE FRAME PORTRAITS $65.00 (2 Bids) Time Remaining: 14h 3m |
 Set of 5 Italy Convex Bubble Glass Floral Oval Picture Prints Metal Frames $55.00 Time Remaining: 28d 17h 29m Buy It Now for only: $55.00 |
 Antique swedish Art Nouveau masur birch wood picture frame Convex glass $12.50 (3 Bids) Time Remaining: 16h 47m |
 Antique Gold Gilt Oval Picture Frame Convex Bubble Glass Little Girl $86.77 (6 Bids) Time Remaining: 17h 38m |
 Antique Arched Picture Frame Convex Glass Wood Metal $119.95 Time Remaining: 13d 15h 28m Buy It Now for only: $119.95 |
 VINTAGE VICTORIAN COURTING COUPLE SIHOUETTE CONVEX GLASS PICTURE $8.00 Time Remaining: 20h 21m |
 ANTIQUE LARGE CONVEX BUBBLE GLASS SOLID BRASS OVAL FRAME PICTURE $25.49 (2 Bids) Time Remaining: 20h 56m |
 ANTIQUE LARGE CONVEX BUBBLE GLASS SOLID BRASS FRAME PICTURE $24.99 (1 Bid) Time Remaining: 21h 1m |
 Antique FRENCH RIBBON BOW OVAL FRAME GILT METAL CONVEX GLASS Victorian $185.00 Time Remaining: 2d 22h 30m Buy It Now for only: $185.00 |
 Rare Vintage Floral Etched Convex Bubble Glass For Antique Frames $25.00 Time Remaining: 21h 7m |
 Lovely Ornate Antique Victorian Wood Gesso Oval 14X20 In Frame w Convex Glass $39.99 Time Remaining: 21h 26m |
 ANTIQUE WOOD GESSO MATCHING OVAL VICTORIAN PICTURE FRAMES CONVEX GLASS 2 PCS $79.99 Time Remaining: 1d 14h 35m Buy It Now for only: $79.99 |
 2 Vintage OVAL Convex METAL PIcTURE FRAMES bubble glass Made in ITaly $9.99 Time Remaining: 22h 4m |
 Large Antique French Oval Brass Framed Convex Glass Picture Frame With Photo $99.00 Time Remaining: 23h 44m |
 Vintage Silhouett Reverse Painting with Convex Glass 4x5 $14.95 Time Remaining: 1d 9h 5m |
 ANTIQUE OLD VICTORIAN PICTURE FRAME ORNATE TIGER WOOD CONVEX GLASS w MAN PHOTO $149.99 Time Remaining: 3d 13h 18m Buy It Now for only: $149.99 |
 Large Oval Wood Framed Convex Glass Picture Frame $16.50 (6 Bids) Time Remaining: 1d 12h 45m |
 ANTIQUE WOOD OVAL CONVEX BUBBLE GLASS PITCURE FRAME POLISH MILITARY PICTURE $56.00 (9 Bids) Time Remaining: 1d 16h 26m |
 1910s oval convex glass reverse painting Statue of Liberty NYC orig frame $100.00 Time Remaining: 26d 9h 38m Buy It Now for only: $100.00 |
 Vintage Pair Reverse Painted Convex Glass Silhouette Pictures $30.00 Time Remaining: 1d 17h 1m |
 ANTIQUE BUBBLE CONVEX GLASS PICTURE FRAME FAMILY PORTRAIT $39.99 (1 Bid) Time Remaining: 1d 20h 32m |
 Excellent ANTIQUE French Style BRASS Convex Glass PICTURE FRAME circa 1910 $9.00 (1 Bid) Time Remaining: 1d 21h 19m |
 ANTIQUE WOOD PICTURE FRAME OVAL GOLD ORNATE GESSO CONVEX GLASS w WEDDING PHOTO $149.99 Time Remaining: 2d 16h 50m Buy It Now for only: $149.99 |
 ANTIQUE OVAL CONVEX BUBBLE GLASS PICTURE FRAME 1 of 2 $19.99 (1 Bid) Time Remaining: 2d 11h 48m |
 ANTIQUE OVAL CONVEX BUBBLE GLASS PICTURE FRAME 2 of 2 $19.99 (1 Bid) Time Remaining: 2d 11h 49m |
 Antique Oval Gilt Decorated Frame w Convex Bubble Glass Ready for Your Art $144.99 Time Remaining: 20d 16h 6m Buy It Now for only: $144.99 |
 Estate Find Vintage Oval Metal Frame Convex Bubble Glass 23 1 2 x 14 Nice $24.99 Time Remaining: 2d 13h 59m |
 CAT PICTURE CONVEX BUBBLE GLASS FRAMED PETER WATSON $35.00 (1 Bid) Time Remaining: 2d 14h 12m |
 CAT PICTURE CONVEX BUBBLE GLASS FRAMED PETER WATSON $35.00 Time Remaining: 2d 14h 16m Buy It Now for only: $60.00 |
 Vintage COMMUNION Photograph ORNATE Frame BRASS FINISH Oval Convex Bubble Glass $125.00 Time Remaining: 29d 10h 41m Buy It Now for only: $125.00 |
 Estate Find Vintage Ornate Oval Wood Frame Convex Bubble Glass 25 x 18 1 2 $34.99 Time Remaining: 2d 15h 11m |
 VINTAGE 2 MATCHING CONVEX GLASS OVAL BUBBLED OLD PICTURE FRAME ART DECO FLORAL $39.99 (1 Bid) Time Remaining: 2d 16h 3m |
 Shabby Vntge CONVEX BUBBLE GLASS SILHOUETTE PICTURES Victorian Scene Chandelier $24.95 Time Remaining: 27d 11h 32m Buy It Now for only: $24.95 |
 Vintage Convex Bubble Art Deco Glass Frames great condition $29.99 (1 Bid) Time Remaining: 2d 16h 33m |
 Pair of Collectable Convex Bubble Glass floral pictures 1940s $29.99 Time Remaining: 2d 16h 34m |
 CONVEX GLASS OVAL WALL PICTURE FRAME 13 X 10 MADE IN ITALY ACTUAL 6 X 85 $41.65 Time Remaining: 4d 21h 45m Buy It Now for only: $41.65 |
 Plaster of Paris Picture Frame with Convex Glass $7.99 Time Remaining: 2d 20h 44m |
 ANTIQUE OVAL WOOD GESSO FLOWER CONVEX BUBBLE GLASS FRAME FAMILY PHOTO NR $16.00 (2 Bids) Time Remaining: 2d 21h 27m |
 ANTIQUE WOOD GESSO FLOWER CONVEX BUBBLE GLASS TRAY STYLE FRAME PHOTO NR $9.99 (1 Bid) Time Remaining: 2d 21h 27m |
 ANTIQUE OVAL CONVEX GLASS FRAME COLORED PHOTO PICTURE $359.00 Time Remaining: 25d 21h 26m Buy It Now for only: $359.00 |
 Vintage Shabby Antique French Oval Convex Bubble Glass Photograph Picture Frame $24.99 Time Remaining: 2d 22h 10m |
 Vintage catherdal picture frame with convex bubble glass $75.00 Time Remaining: 3d 3h 12m |
 ANTIQUE GESSO ON WOOD BUBBLE DOME GLASS PICTURE FRAME FLORAL PHOTO CONVEX $79.99 Time Remaining: 19d 21h 33m Buy It Now for only: $79.99 |
 Antique Vintage Oval Oblong Octagon Wood Frame w Convex Bubble Glass $9.99 (2 Bids) Time Remaining: 3d 15h 20m |
 Antique Oval Oblong Octagon Wood Frame w Convex Bubble Glass Carved Flowers $15.02 (4 Bids) Time Remaining: 3d 15h 35m |
 Antique Oval Frame w Convex Bubble Glass and Portrait of Young Girl $45.00 Time Remaining: 4d 1h 28m Buy It Now for only: $105.00 |
 Antique Beautifully Hand Carved Oval Gold Gilt Frame w Original Convex Glass $150.00 Time Remaining: 3d 17h 21m Buy It Now for only: $150.00 |
 Antique Early 1900s Convex Bubble Glass Brass Picture Frame Portrait Victorian $44.99 Time Remaining: 4d 15h 5m |
 Antique Cast Brass Oval Frame W Convex Glass Child W US Flag Picture 165x27 $39.99 Time Remaining: 4d 15h 56m Buy It Now for only: $79.99 |
 LARGE ANTIQUE FRENCH OVAL BRASS CONVEX GLASS PICTURE FRAME WITH BEAUTIFUL DESIGN $185.00 Time Remaining: 17h 13m Buy It Now for only: $185.00 |
 VINTAGE LARGE CONVEX BUBBLE GLASS METAL PICTURE FRAME $18.00 Time Remaining: 4d 17h 33m |
 VINTAGE CONVEX GLASS PAINTING COURTING COUPLE GLASS ONLY $9.99 Time Remaining: 4d 20h 32m |
 REVERSE PAINTING ON CONVEX GLASS ALL ORIGINAL VINTAGE WOOD OVAL FRAME $149.99 Time Remaining: 4d 23h 34m |
 Antique French Gilt Bronze Hanging Picture Frame Bow Top Convex Glass $195.00 Time Remaining: 2d 22h 5m Buy It Now for only: $195.00 |
 ANTIQUE WOOD GESSO VICTORIAN OVAL CONVEX GLASS FLORAL PICTURE FRAME BEAUTY $59.99 (1 Bid) Time Remaining: 5d 14h 20m |
 Antique Convex Glass Wood Picture Frames Wall Decor Shabby Weathered Chic Pink $134.99 Time Remaining: 5d 15h 48m |
 Vintage Metal Convex Glass Picture Jesus $25.00 Time Remaining: 26d 18h 2m Buy It Now for only: $25.00 |
 VINTAGE PAIR ORNATE BRASS OVAL CONVEX BUBBLE GLASS FRAMES FLORAL PRINTS ITALY $25.00 Time Remaining: 5d 17h 2m |
 1 ANTIQUE Dome Bubble Convex Glass Oval Picture Frame MILITARY Tinted Photo $24.99 (1 Bid) Time Remaining: 5d 18h 44m |
 2 ANTIQUE Dome Bubble Convex Glass Oval Picture Frame vintage Tinted Photo $24.99 Time Remaining: 5d 18h 47m |
 Antique Gold Wood Picture Frame Convex Glass Wedding Photo $124.99 Time Remaining: 21d 18h 59m Buy It Now for only: $124.99 |
 SET 2 Antique Victorian Art Deco Bubble Glass Convex Easel Portrait Frames Brass $26.99 (8 Bids) Time Remaining: 5d 18h 50m |
 ANTIQUE Dome Bubble Convex Glass Oval Picture Frame vintage Baby Tinted Photo $36.00 (5 Bids) Time Remaining: 5d 18h 50m |
 1910s oval convex glass reverse painting US Capital Washington DC orig frame $120.00 Time Remaining: 26d 13h 49m Buy It Now for only: $120.00 |
 Antique Octagon Convex Glass Framed Picture of Little Boy on a Tricycle $49.99 Time Remaining: 5d 20h 38m |
 1920s CONVEX Bubble GLASS FRAME With GREAT Photo of young lady $39.99 Time Remaining: 5d 21h 46m |
 ANTIQUE SMALL PICTURE FRAME w CONVEX GLASS BRASS w FLORAL PATTERN 3x4 $39.99 Time Remaining: 1d 12h 36m Buy It Now for only: $39.99 |
 Vintage Danish Denmark brass picture frame with convex bow glass Sepia Child $26.93 Time Remaining: 5d 21h 53m |
 1920s CONVEX Bubble GLASS FRAME With GREAT Photo of lady $9.99 Time Remaining: 5d 21h 54m |
 Antique bubble glass frame convex Mt Rushmore $29.99 Time Remaining: 5d 22h 4m |
 Antique Round 3 Gesso Framed Gold Gilt Convex Glass Chromolithograph Prints $59.99 Time Remaining: 16d 18h 26m Buy It Now for only: $59.99 |
 VINTAGE CONVEX GLASS LARGE ORNATE BRASS PICTURE FRAME 19 TALL MADE IN ITALY $39.94 Time Remaining: 5d 22h 26m |
 Handsome Antique 1800s tiger grain oval frame w original Antique convex glass $65.00 Time Remaining: 6d 18h 12m |
 ANTIQUE GESSO BUBBLE DOME GLASS FLAG WOOD GRAIN PICTURE FRAME PHOTO CONVEX $99.90 Time Remaining: 19d 21h 33m Buy It Now for only: $99.90 |
 GLORIOUS HORIZONTAL ANTIQUE PICTURE FRAME WITH CONVEX GLASS $55.00 Time Remaining: 6d 20h 22m Buy It Now for only: $66.00 |
 Vintage Convex Glass Picture Frame w Painted Glass $7.99 Time Remaining: 6d 21h 26m |
 Vintage Tiger Eye Wood Frame with Oval Convex Glass 15X 21 $14.99 Time Remaining: 6d 21h 27m |
 Antique Black Bois Durci Victorian Mourning PICTURE FRAME Convex Glass Easeled $325.00 Time Remaining: 4d 22h 17m Buy It Now for only: $325.00 |
 Antique Deco Polychrome Convex Glass Picture Frame Photograph Children Pony Kids $69.00 Time Remaining: 6d 21h 49m |
 Antique Oval Metal Frame w Bow on Top Convex Glass FAB No RES $9.99 Time Remaining: 6d 21h 57m |
 Vintage Pair Wood Frame with Convex or Bubble Glass Dried Flowers 6 3 4 $29.95 Time Remaining: 1d 17h 2m Buy It Now for only: $29.95 |
 LG ANTIQUE PICTURE FRAME w CONVEX BUBBLE GLASS CARVED EAGLE FLAGS $35.00 Time Remaining: 6d 22h 26m Buy It Now for only: $75.00 |
 Antique Convex Bubble Glass Wooden Picture Frame Ex Cond $19.95 Time Remaining: 6d 22h 27m |
 PICTURE OF STUDENT IN AN ANTIQUE WOODEN OVAL FRAME W CONVEX BUBBLE GLASS $49.99 Time Remaining: 6d 22h 29m Buy It Now for only: $99.99 |
 Vintage Made In Italy Metal Picture Frame Bubble Convex Glass With Print $29.99 Time Remaining: 24d 14h 42m Buy It Now for only: $29.99 |
 PICTURE OF TODDLER IN AN ANTIQUE WOODEN OVAL FRAME W CONVEX BUBBLE GLASS $49.99 Time Remaining: 6d 22h 29m Buy It Now for only: $99.99 |
 Antique Ornate Oval Frame with Bubble Convex Glass Portrait Two Young Children $24.99 Time Remaining: 6d 22h 58m Buy It Now for only: $64.99 |
 ANTIQUE PAIR BRASS FRAMES CONVEX GLASS picture size 20 x 12 EXCELLENT ORIG $345.00 Time Remaining: 10d 22h 4m Buy It Now for only: $345.00 |
 Antique Oval Picture Frame Convex Bubble Glass Child Portrait 23 x 17 $19.99 Time Remaining: 6d 23h 5m |
 Antique Ornate Oval Frame with Bubble Convex Glass Portrait Young Child $44.99 Time Remaining: 6d 23h 15m Buy It Now for only: $97.99 |
 Peter Watsons Studio Convex Glass Wall Hanging Plaque of straw flowers $2.50 Time Remaining: 13h 17m |
 FRENCH OVAL GILT METAL FRAME CONVEX GLASS MOUNTED DRIED NATURAL VEGETATION IMAGE $225.00 Time Remaining: 5d 23h 12m Buy It Now for only: $225.00 |
 Vintage Mid Century Sunburst Convex Mirror Smoky Glass Inserts $489.95 Time Remaining: 22h 44m |
 ANTIQUE 14 1 2 BULLS EYE CONVEX GLASS GOLD WOOD WALL MIRROR NO RESERVE $68.00 (11 Bids) Time Remaining: 3d 16h 25m |
 DENMARK CONVEX GLASS DESK WALL PICTURE FRAME 5 X 5 $63.75 Time Remaining: 8d 11h 59m Buy It Now for only: $63.75 |
 Peter Watsons Studio Convex Glass Wall Hanging Plaque of Dried Flowers $0.99 Time Remaining: 3d 20h 13m |
 Antique Vtg ORNATE Brass Scroll OVAL Frame Floral Picture Print Convex Glass 13 $9.99 (1 Bid) Time Remaining: 3d 21h 28m |
Convex Glass
Information On The History Of Wearing Glasses
Glasses can be traced back in our history as far as the
thirteenth century. The first signs of glasses lenses were
found in elementary crystals or convex shaped glass that
have been found in archeological digs dating back several
thousand years. It is believed however that these shaped
"lenses" were not used for any eyesight correction of
glasses lenses, rather they were used most probably as
magnifiers. It wasn't until much later, likely the first
glasses as such were developed in the mid-thirteenth
century from convex lenses. The term lenses itself is most
likely derived from the latin for "bean" as the slightly
convex shapr of the bean resembles a basic lens for
spectacles.
The earliest lenses used in any sort of glasses known were
made of quartz crystals and could be used for correction of
vision as well as simply magnifying.
As their viability as glasses became more widely known and
so popular, the process to make the glasses lenses
developed first into spectacles made from hand blown glass
- and later (likely the very end of the thirteenth century)
into shaped glasses whereby molten glass was formed into a
convex mold and so defined a lens that could be used as
glasses or spectacles for correction.
It is also believed that some Roman Emperors had lenses
formed into a type of spectacles that were made of
emeralds, and so became what were probably the first
prescription sunglasses.
The real development of glasses as documented however was in
Italy and were produced by craftsmen who were used to making
jewelry and so able to incorporate small crystal lenses into
structure that could support them in front of the eyes
without having to be held.
Of course this made the earliest glasses extremely expensive
as they were handmade by artisans and used glass which was a
very expensive material in the 14th and 15th centuries. The
first actual documented wearer of glasses however was the
Bishop da Provena in the 13th century who had some simple
magnifying crystals connected to short handles and then
joined together so that they could be balanced on his
nose….and became at the same time the first example
of "pincenez".
There remains today some dispute about the origins of
glasses and spectacles, as there is some evidence that
Marco Polo encountered them when exploring the East and
landing in China in 1270 or 1271. There is further credit
give then by the Chinese themselves to the even earlier
development of glasses - or at least of a practical
corrective (non-magnifying) lens to Arabia as much as a
century earlier.
Despite this somewhat disputed provenance, there is no doubt
as to the popularity that glasses enjoyed as the manufacture
of them became less of an artisan skill and more of a
manufacturing process using glass and being predictive of
the lens curvature and so correction for myopia in
particular.
It is interesting to note that although there is good
documentary evidence of glasses being produced in some
fairly significant volume in the 16th century - it was not
until much later in the early part of the seventeenth
century that the physics of the lens was actually understood
and how the correction for myopia actually came about. This
discovery or explanation is credited to Johannes Kepler who
studied optics for several decades, eventually publishing
his work in 1604.
The Determination of the Necessity for Wearing Glasses
About the Author
For more great information - Squidoo or Amazon
3 pictures of the same object as seen through NORMAL GLASS , CONCAVE LENS and a CONVEX LENS-LABELED?
a normal glass is a window or something. You can look on Wikipedia for Concave and Convex and label them yourself. You have to know, however, whether you want a single concave and single convex lens or a double concave and double convex lens
If you can't find the information, go to a hobby store and pick up cheap lenses and play with them, you will figure that out.
New Orleans Commemorative Jewelry-Box Dollhouse