FI101650B - Additional lenses for spectacles - Google Patents

Description

101650

Additional lenses for spectacles. - No export refunds on the sample.

The invention relates to additional lenses to be attached to spectacles, which act as filters, protective plates and / or magnifying glasses in a limited part of the actual lenses and which are fixed in place by mechanical holders which allow the additional lenses to be oriented.

10 For example, dentists have a need to use a shield to prevent UV curing device radiation from hitting the eyes directly. A separate UV protection plate held by the dentist is difficult to use. In addition to UV radiation, protection can apply to any radiation that is harmful to the eyes.

15

On the other hand, there is often a need for spectacles to have a magnifying area that can be used in precision work when magnification is needed momentarily. It is expensive to make special double-power glasses for this purpose.

20

In addition, separate lenses can also act as filters to make certain objects more visible.

It is previously known from U.S. Patent No. 5,182,588 to attach a protective film to the surface of spectacle lenses in a defined portion of the lens. The thin coating film is difficult to make and changes the glasses permanently, so the solution is ill-suited to each eye’s own glasses. In addition, it is difficult to obtain a sufficient protective effect on the coating formed by the thin layer, if at the same time good transparency is to be ensured. The coating only serves as protection and does not provide the possibility to use a magnifying glass simultaneously or alternatively.

In addition, it is known from e.g. U.S. Pat. No. 4,647,165 and U.S. Pat. No. 3,446,548 to place various additional lenses in the actual lens sub-area by means of mechanical, adjustable 101650 2 arms. These known solutions do not provide reliable attachment of additional lenses and the attachment arrangement is not suitable for all types of spectacles. Specially designed spectacles are often made to ensure attachment, which greatly increases the overall cost.

The object of the invention is to provide additional spectacle-mounted lenses which are as inconspicuous as possible, easy to use and inexpensive, and not on the road, and which act as filters, shields or magnifying glasses or combinations thereof, depending on the need for use.

It is a particular object of the invention to provide a simple and reliable fastening arrangement for additional lenses which is suitable for use with all types of spectacles.

These objects are achieved on the basis of the features set out in the appended claim 1. Preferred embodiments of the invention are set out in claims 2-8.

For example, the use of flexible arms (requirement 2) achieves' 25 essential advantages over rigid articulated arms. The lenses associated with the bent arms are easy to clean and return to their former position.

In the following, the invention will be illustrated by means of Embodiment 30 with reference to the accompanying drawings, in which Fig. 1 shows a front view of additional lenses according to the invention attached to spectacles, Fig. 2 shows on a larger scale the attachment between the additional lens and its mounting arm; 101650 3 Fig. 3 shows, on a larger scale, a side view of the auxiliary lens mounting connector and the positioning of the auxiliary lens 4 relative to the spectacle lens. The figure also illustrates the mounting arrangement of a separate magnifying glass 5 16 with the same metal connector.

Figure 4 shows a separate magnifying glass 16 seen in the direction of the arm 15 of the mounting arm; Fig. 5 is a top view of the metal connector of Fig. 3; Fig. 6 shows a section taken along the line VI-VI in Fig. 5 and Fig. 7 shows a section taken along the line VII-VII in Fig. 5.

Additional lenses 4 which protect against eye-damaging radiation and / or act as magnifying glasses and / or filters are placed on the inner surface side of the actual lenses 1 next to the lower edge of the lenses 1. The attachment of the additional lenses 4 is realized by flexible arms 5. The lower ends of the arms 5 are attached to the groove made in the lower edge of the additional lenses 4 by glue-25a. The upper ends of the arms 5 are attached to a metal connector 6 which can be tightened with a screw 7. The metal connector 6 engages the base 3 connecting the frames 2 of the actual lenses over the nose. The screw 7 can be threaded directly into the thick frame material.

30

The metal connector 6 comprises two body parts 8, 9, between which the ends of the arms 5 can be pressed by tightening the screw 7. A flat tensioning bracket 10 of flexible, soft metal, e.g. silver, forms a fastening loop 35 around the base 3. The ends of the clamping bracket 10 are received in a hole 11a, 11b passing through the body parts 9, 8, which is dimensioned relative to the screw 7 so that the threads of the screw 101650 4 intersect in the material of the clamping bracket 10. Such a connector structure allows one screw 7 to tighten the connector to its base 3 and at the same time press the arms 5 onto the connector. The surface 5 of the connector body 8 opposite the second body 9 has grooves 12 smaller than the diameter of the arms 5 for receiving the arms 5. In this case, the arms 5 retain their orientation and before the final tightening of the screw 7, the length of the arms 5 can be adjusted by moving them in their longitudinal direction between the body parts 8, 9 so that the additional lens 4 is in the correct position. The extra length from the upper ends of the arms 5 can finally be cut off.

The body part 8 of the connector 6 is further shaped for gripping with a notched holder 14 at the base of a separate magnifying and / or protective glass 16 arm 15. The notched holder 14 is pressed from above on the body part 8, whereby the ridges on the inner surfaces of the notch 4 engage the grooves 13 and the protrusions at the lower ends of the notch snap below the lower edge of the body 8. Such a magnifying glass 16 is already known in connection with eye-20 glasses, but in the invention it is connected in a new way with a light connector slot 14 to the metal connector 6 according to the invention.

Figure 2 illustrates the possibility that the lower half of the additional 25 lens 4 consists of a protective glass 4b and the upper half of a magnifying glass 4a. In this case, a separate magnifying glass 16 is not required. Alternatively, either of the magnifying glasses 4a or 16 may be a filter or a combination of a filter and a magnifying glass.

Claims (8)

101650 Auxiliary lenses (4) to be attached to the spectacles, which act as filters, protective plates and / or magnifying glasses 5 in a limited part of the actual lenses (1) and are fixed in place by mechanical holders (5, 6) which allow the auxiliary lenses (4) to be oriented, characterized in that the mechanical holders comprise a connector (6) which can be tightened by means of a screw (7) to a base (3) connecting the frames of the actual lenses over the nose, and that the connector (6) comprises a clamping loop (10) whose loop engages around said base (3) and the ends of which are received in a hole (11a, 11b) passing through the connector body (8, 9), dimensioned with respect to the screw (7) 15 so that the threads of the screw (7) engage the clamping bracket (10) . Auxiliary lenses according to claim 1, characterized in that the mechanical holders further comprise 20 flexible arms (5). Auxiliary lenses according to claim 2, characterized in that the lower ends of the arms (5) are attached to the edge of the auxiliary lens (4) and the upper ends of the arms (5) are attached to said connector (6). Additional lenses according to Claim 1, 2 or 3, characterized in that the connector (6) is made of metal. Additional lenses according to one of Claims 2 to 4, characterized in that the connector (6) has a two-part connector body (8, 9), between the parts of which the ends of the arms (5) can be pressed. Auxiliary lenses according to claim 5, characterized in that at least the surface of the second body part (8) opposite the second body part (9) has grooves (12) smaller than 101650 diameter for the arms (5) for receiving the arms (5). . Additional lenses according to one of Claims 1 to 6, characterized in that the connector (6, 8) is designed for adhesion with a notched holder (14) at the base of a separate magnifying and / or protective glass arm (15). Auxiliary lenses according to one of Claims 1 to 7, characterized in that the auxiliary lenses (4) are arranged on the inner surface side of the actual lenses (1) next to the lower edge of the lenses (1). 101650