Integrated refractor

A method for constructing a refraction system, comprising the steps of:

• providing a left viewing unit employed a first viewing path, first set of folding optics, a first refractor sensor, a first optical relay of unit magnification, and a first cylinder corrector, wherein said first optical relay is constructed as part of said first viewing path and is to change defocus power of said first viewing path, and wherein said first set of folding optics folds said first viewing path to provide viewing experience mimic to a phoropter, and said first refractor sensor is located to measure refractive errors through said first optical relay of said first viewing path;
• providing a right viewing unit employed a second viewing path, second set of folding optics, a second refractor sensor, a second optical relay of unit magnification, and a second cylinder corrector, wherein said second optical relay is constructed as part of said second viewing path and is to change defocus power of said second viewing path, and wherein said second set of folding optics folds said second viewing path to provide viewing experience mimic to a phoropter, and said second refractor sensor is located to measure refractive errors through said second optical relay of said second viewing path;
• providing a moving mechanism coupled to translate said left viewing unit with respect to said right viewing unit;
• and
• providing an external viewing chart positioned at a predetermined distance outside said left and right viewing units;
• wherein said subject eyes can look through said left and right viewing units and focus on said viewing chart, and wherein said refraction system enables both of objective refraction and subjective refraction through said first optical relay and said second optical relay.

A refraction system comprising:

• a left viewing unit employed a first viewing path, a first set of folding optics, a first refractor sensor, a first optical relay of unit magnification, and a first cylinder corrector, wherein said first optical relay is constructed as part of said first viewing path and is to change defocus power of said first viewing path, and wherein said first set of folding optics folds said first viewing path to provide a viewing experience mimic to a phoropter, and said first refractor sensor is located to measure refractive errors through said first optical relay of said first viewing path;
• a right viewing unit employed a second viewing path, a second set of folding optics, a second refractor sensor, a second optical relay of unit magnification, and a second cylinder corrector, wherein said second optical relay is constructed as part of said second viewing path and is to change defocus power of said second viewing path, and wherein said second set of folding optics folds said second viewing path to provide a viewing experience mimic to a phoropter, and said second refractor sensor is located to measure refractive errors through said second optical relay of said second viewing path;
• and
• a moving mechanism coupled to translate said left viewing unit with respect to said right viewing unit;
• an external viewing chart positioned at a predetermined distance outside said left and right viewing units;
• and
• a system processor including a first software algorithm to provide a first prescription of standard precision for conventional eyeglasses and contact lenses and a second software algorithm to provide a second prescription of high precision in a non-conventional format for fabricating custom or premium eyeglasses and contact lenses;
• wherein said refraction system enables said subject eyes to look through said left and right viewing units and to focus on said external viewing chart, and wherein said refraction system enables both of objective refraction and subjective refraction through said first optical relay and said second optical relay.