| 摘要 |
FIELD: medicine.SUBSTANCE: invention relates to eyeglasses, characterised by better fit on head and suitable for users with different dimensions of head. Glasses have arch extending backward from front side points and including flexible part, characterized by maximum height (H), measured in direction parallel to median sagittal plane, dissecting glasses on imaginary left and right halves. Flexible part includes at least first and second lengthwise ribs, and when arc is not in bent state, first rib is located at angle relative to second rib, and H > 20 mm. At that, each of ribs comprises first and second main surface, spaced apart by thickness (t), and first base surface of each of ribs is not perpendicular in relation to transverse plane, dissecting points on virtual upper and lower halves.EFFECT: technical result is assurance of optimal combination of reliability of fit and wearing comfort for wide range of dimensions of user's head.19 cl, 2 tbl, 11 dwg |
