Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C7/00—Optical parts
  • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
  • G02C7/08—Auxiliary lenses; Arrangements for varying focal length
  • G02C7/086—Auxiliary lenses located directly on a main spectacle lens or in the immediate vicinity of main spectacles
• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C9/00—Attaching auxiliary optical parts

Definitions

• the present invention relates to sports spectacles with auxiliary optical parts.
• the problem constituted by sudden brightness changes is generally solved by applying additional darkening lenses which are suitable for permanently or temporarily replacing those being used.
• the darkening lenses are currently applied with various methods, for example by fixing with removable elastic means, or by pivoting them on the front part of the glass frame, or by accommodating them inside the front part, etc.
• the aim of the present invention is to provide spectacles with auxiliary optical parts which can be superimposed on the main optical part in an easy and rapid manner.
• a consequent primary object is to provide spectacles wherein the auxiliary optical parts are constituted by darkening lenses to be superimposed on the main optical part in case of sudden brightness changes or of persistent intense radiation.
• Another important object is to provide spectacles wherein the auxiliary optical parts are arranged so as not to produce bulk both during inactivity and during use.
• a further object is to provide spectacles which have a dual optical and/or protective function as well as a darkening function.
• auxiliary optical parts characterized in that it comprises a front transverse element at whose ends the temples are articulated, said element supporting a fixed main optical part and two auxiliary lenses which are slidingly fixed thereto.
• figure 1 is a partially exploded plan view of a first embodiment of spectacles according to the invention
• figure 2 is a rear view of the spectacles of figure 1, taken in the direction indicated by the arrow II
• figure 3 is a front view of the spectacles of figure 1, with the auxiliary optical parts in their idle position
• figure 4 is a plan view of the spectacles of figure 1, with auxiliary optical parts superimposed on the main part
• figure 5 is a plan view of the spectacles of figure 1, with the auxiliary optical parts in their idle position
• figure 6 is a sectional view, taken along the plane VI- VI of figure 4
• figure 7 is a partially exploded front perspective view of a second embodiment of the spectacles according to the present invention
• figure 8 is a rear view of an auxiliary optical part of the spectacles of figure 7
• figure 9 is an enlarged transverse sectional view of a detail of the spectacles of figure 7
• figure 10 is a partially exploded plan view of a detail of the spectacles of figure 7
• figure 10 is a partially exploded
• the spectacles comprise a transverse and substantially circular arc-like element 1, below which a mask or visor 2 is coupled with a tight fit or otherwise stably fixed.
• Said visor is preferably constituted, for sports spectacles, by neutral material which has such a shape as to ensure maximum protection against air, wind etc. , but which can be constituted by, or in any case support, optical lenses for therapeutic use, combining the requirements of sight with the protective function.
• a spacer 3 is arranged on the central part of the arc ⁇ like element 1, and a nose pad 5 is connected to a lower wing 4 thereof.
• the nose pad 5 has the function of softly resting the spectacles on the nose, contributing in any case to the overall stiffening of the structure.
• auxiliary optical parts comprise auxiliary lenses, respectively designated by the numerals 20 and 30, each of which is rigidly associated with a box-shaped arc-like slider, 21 and 31, whose internal cross-section is slightly larger than the cross-section of the arc-like element 1 which is inserted therein from the corresponding ends 12 and
• the sliding of the sliders 21 and 31 on the arc-like element 1 also entails the translatory motion of the respective darkening lenses 20 and 30, which can thus be completely or partially superimposed on the left and right parts of the visor 2.
• the spacer 3 also has the function of stroke limit for the sliders 21 and 31 toward the central part of the arc ⁇ like element 1.
• a second embodiment of the spectacles according to the present invention comprises a front transverse element 101 which is constituted by two arc-like portions, respectively 101a and
• Temples 102 and 103 are hinged at the ends of the front transverse element 101, whereas the central bridge 104 of a main optical part 105, constituted by a frame 106 for two lenses, respectively 107 and 108, and corresponding nose pads 109 and 110, is fixed at the central portion 101c for example by welding.
• the lenses 107 and 108 may be either neutral or corrective.
• Respective sliders 111 and 113 are slidingly rigidly associated on the arc-like portions 101a and 101b of the element 101 and have a C-shaped cross-section; corresponding auxiliary darkening lenses 115 and 116 are fixed to said sliders for example by means of rivets 112 and 114.
• the frame of the spectacles in particular the front transverse element 101, is metallic, whereas the sliders 111 and 112 are made of a plastic material and the coupling between them and the sliding portions is such that movement occurs with a certain friction.
• the stroke limit positions for the sliding of the lenses 115 and 116 are defined by the central bridge 104 of the main optical part 105 and by folds 117 and 118 by means of which the ends of the. portions 101a and 101b are connected to the regions for the pivoting of the temples 101 and 102.
• the sliders 111 and 112 are made of a plastic material allows their elastic deformability and thus the easy separation of the auxiliary lenses 115 and 116 from the front transverse element 101. From what has been described above, it is fully evident that the spectacles according to the present invention, in both embodiments, has achieved the intended aim and objects.
• the translatory motion of the auxiliary lenses in fact does not entail particular problems, and said auxiliary lenses, by virtue of the simple circular-arc or double- circular-arc shape of the transverse elements, entail no particular problems of bulk, especially in their idle position.
• auxiliary lenses may also be removed from the spectacles without problems of any kind.
• the invention thus conceived is susceptible to numerous modifications and variations, all of which are within the scope of the inventive concept.

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• Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Ophthalmology & Optometry (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• General Health & Medical Sciences (AREA)
• Eyeglasses (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=11336761

Family Applications (1)

Country Status (3)

Cited By (4)

Families Citing this family (1)

Citations (6)

• 1991
  • 1991-03-27 IT ITBL910004A patent/IT1249414B/it active IP Right Grant
• 1992
  • 1992-03-25 WO PCT/EP1992/000657 patent/WO1992017811A1/en not_active Application Discontinuation
  • 1992-03-25 EP EP92907034A patent/EP0531488A1/en not_active Withdrawn

Patent Citations (6)

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