Technical Description of Glasses
Introduction-
Glasses are a vital part of our daily life since it allows us to read and see clearer. The man credited for the creation of the glasses was Benjamin Franklin because he created the bifocal lenses. As seen in picture #2 underneath, the glasses were divided for those who were near sighted and far sighted. Although Franklin was credited for the invention of glasses, glasses have been linked all the way back to the 14th century. An era before Franklins time was known as “pince-nez” was where the structure and frame of the glasses were improved. As seen in figure #1, these glasses were very useful and simple. The technological advancements have been seen throughout the time since there have been an addition of a bridge for the nose and an arched frame to fit both ears and create stability.
Figure #1: First advancement
Figure #2: Second advancement
Technical Description for Glasses
Body-
- The main components of a pair of glasses are the frame and the lenses. The frame is what holds the lenses together on the face and provides a comfortable and stable position for the glasses to stay on your face. Innovations for frames have led to different materials such as whalebone, leather, plastic, silver and iron. In addition, frames are supposed to have a structure that is arched within the ears and a spring bridge pinched on the nose. The most important component of glasses are the lenses. There are two lenses, one for the left eye and one for the right eye. There are two type of lenses, there is concave lens for near sightedness and there is convex lens for far sightedness. For near sightedness the lenses diverge light rays to reduce the eyes focusing power. This moves the eyes focus backward onto the retina. For far sightedness, the lenses converge the light rays, which increases the focusing power. This moves the eyes focusing point forward onto the retina. As seen in photo # 3, these are a pair of modern glasses. They include a plastic frame with an arched around the ears and a bridge pinched on top of the nose to create stability. The ideas of Benjamin Franklin, the Germans, Venetians and Spanish led to the final result of glasses we use today.
- Figure 3: Components
Technical Description for Glasses
Conclusion-
The usefulness of glasses and its components can be shown throughout this technical description. The main three components including the concave lenses for far and near sightedness, the frame that includes the hinges and the bridge and nose pads. All these components complete a successful pair of glasses since it adds comfortability and visibility. If it weren’t for glasses and their technological advancements, society wouldn’t be able to see due to issues in their retina.
Reference/ citations-
Photo #1 – Retrieved from https://www.google.com/search?q=benjamin franklin glasses&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi8nMnP7IniAhXjUt8KHZuCAJ4Q_AUIDigB&biw=1278&bih=632#imgrc=-6jU8fD0mt5EcM
Photo #2-Tinted eyeglasses. (1934). Journal of the Franklin Institute, 218(1), 106. doi:10.1016/s0016-0032(34)91398-3
Photo #3: Retrieved from https://www.google.com/search?biw=1278&bih=632&tbm=isch&sa=1&ei=obPRXNzfOY2t_Qa4nLiACA&q=components of glasses&oq=components of glasses&gs_l=img.3..0.450578.456453..456777…0.0..0.143.1396.20j1……2….1..gws-wiz-img…..0..35i39j0i67j0i8i30j0i24._n67jAbPb1I#imgrc=hKg8FRskgzshoM:
