MODULAR SPECTACLES
FIG8 is a side cross sectional view of an illustration of the modular spectacles, according to an example embodiment
FIG8 is a side cross sectional view of an illustration of the modular spectacles 100, according to an example embodiment. FIG8 shows a cross section along a main longitudinal axis of the temple 117. FIG8 shows that the split arms of the temple 117 have been inserted into the slots of the rear, middle and front frame elements 540, 530, 520 when the frame elements are stacked in a sandwich formation. Once inserted, the compressible ends expand and push against the interior surface of the slots of the rear, middle and front frame elements. The interior surface of the slots of the rear, middle and front frame elements rest securely against the square shaped carve-out portions 660, 662 on the distal end of each of the split arms of temple 117. FIG8 shows that the square shaped carve-out portions 660, 662 are shaped precisely to fit the interior surface of the slots of the rear, middle and front frame elements. The protruding or perpendicular elements 670, 672 that extends perpendicularly from the distal end of each of the split arms 655, 657 prevent the rear, middle and front frame elements from being pulled outwards and away from the temples. Therefore, the temples maintain the rear, middle and front frame elements securely in place.
side cross-sectional view
117
temple
100
modular spectacles
540
670
perpendicular elements
530
middle frame element
520
front frame element
['1. Modular spectacles that are assembled and disassembled without the use of tools, comprising: a) a pair of lenses; b) a middle frame element including a pair of rims defining orifices for accepting the pair of lenses and a slot on each side of the middle frame element; c) a front frame element having a slot on each side of the front frame element, such that when the slots of the front frame element are aligned with the slots of the middle frame element, portions of the front frame element extend over a portion of the orifices defined by the pair of rims; d) a rear frame element having a length that is substantially coextensive with the length of the middle frame element, and a slot on each side of the rear frame element, such that when the slots of the rear frame element are aligned with the slots of the middle frame element, portions of the rear frame element extend over a portion of the orifices defined by the pair of rims; and e) a pair of temples with compressible ends that fit securely within the slots in the front, rear and middle frame elements, such that when said compressible ends are compressed, inserted into said slots, and released, said compressible ends expand and are secured within said slots; f) wherein the pair of lenses are placed within the pair of rims, the middle frame element is placed between the front and rear frame elements such that the slots of the middle frame element align with the slots of the front and rear frame elements, and the compressible ends of the pair of temples are inserted into the slots of the front, rear and middle frame elements and released, such that the front, rear and middle frame elements are secured  together, and the pair of lenses are held securely in place by the front, rear and middle frame elements.', '3. Modular spectacles as claimed in Claim 1 or 2 wherein the pair of lenses comprise a) a left lens and a right lens; b) the middle frame element includes a left rim defining a left orifice for the left lens, a right rim defining a right orifice for the right lens, a bridge connecting the left and right rims, c) portions of the front frame element extend over a portion of the left and right orifices defined by the pair of rims; d) portions of the rear frame element extend over a portion of the left and right orifices defined by the pair of rims; and e) the pair of temples comprise a left temple and a right temple, f) wherein the left and right lenses are placed within the left and right rims, respectively, of the middle frame element, the middle frame element is placed between the front and rear frame elements such that the slots of the middle frame element align with the slots of the front and rear frame elements, the compressible ends of the left temple are inserted into left side slots of the front, rear and middle frame elements and released, and the compressible ends of the right temple are inserted into right side slots of the front, rear and middle frame elements and released, such that the front, rear and middle frame elements are  secured together, and the left and right lenses are held securely in place by the front, rear and middle frame elements.']