RU2077070C1 - Process of individual manufacture of eye glasses - Google Patents

Abstract

FIELD: optics. SUBSTANCE: process of individual manufacture of eye glasses includes procedures carried out in following sequence: determination of parameters of frame and holders with the help of measuring device put on face part of head, manufacture of their models with reinforcements (washers imitating outline of machined lenses, rods and brackets for holders), placement of model into split cast mould, its filling with solution of temperature resistant material and drying. After final treatment of mouldings ends of holders are bent by shape of helix of patient, lenses are machined with the use of washers in the capacity of templates and eye lasses are assembled. EFFECT: improved quality of fitting. 3 dwg

Description

 The invention relates to the manufacturing technology of optical devices, in particular to the manufacture of glasses.

A known method of serial production of batches of glasses of various models, containing a set of the following technological methods:
frame design taking into account the average anthropometric parameters of the human head;
manufacture of a metal mold for the body of a plastic frame and earhooks;
production of castings on injection molding machines;
points assembly [1]
Since the glasses are made in series in this method, and it is not possible according to anthropometry of the face of the individual’s head to make glasses for him, which ensure the correct installation of the lenses in front of the eyes, this method is not an analogue of the present invention.

Correct installation of lenses in front of the patient's eyes includes:
the location of the optical centers of the lenses in the midline of the frame;
coincidence of the optical axis of the lenses with the centers of the pupils of the patient and with the direction of his gaze directly in front of him;
the installation of lenses at a distance of 13 mm from the cornea of the eye (A quick reference to medical optics. M.D. Model, M. Medicine, 1970).

 The invention consists in a method of manufacturing individual glasses, one or more, taking into account the configuration of the front of the patient’s head, the requirements of ophthalmology and fashion.

 The method involves technological methods performed in the following sequence: a measuring device is installed on the nose surface under the rim, its configuration is determined and all parameters for manufacturing the rim (except for diopter lenses) are determined with respect to it, then models of the plastic rim body and earhooks are made on the mounting fixture fittings (washers that mimic the contours of the machined lenses, brackets and rods for earhooks), then mold the models in an injection mold and install them in their injection cavities fittings and temples and temples are cast, then when assembling glasses, the washers are used as copiers for processing the contours of the lenses, and the ends of the temples are bent in the shape of the patient’s auricle.

 A positive technical result will be expressed in the fact that the implementation of the invention will make it possible to produce glasses for an individual of any model according to his requirement with correctly installed lenses, in addition, it will provide ease of use (glasses will not slide off the nose).

 In FIG. 1 shows a measuring device; figure 2 mounting device; figure 3 detachable injection mold.

 The method is as follows. The nose surface under the rim is covered with a layer of plastic material 1 (Fig. 1), for example, clay, a frame 2 with elastic elements 3 is mounted on it and squeezed, then fastened to the frame using the flexible bracket 4 housing 5 of the measuring device and, moving the brackets 6 and insert 7, fix it over the ears of the patient. Dividing scales are applied on the front surfaces of the housing guides and inserts, and on the transparent noniuses 8 sighting lines.

 Next, the basic parameters of the frame of the frame are determined, for which, by bending and turning the bracket 4, they insert the plane A of the device along the line of the centers of the pupils when looking directly in front of them, maintain a distance (about 13 mm) from the cornea of the eye to the guides of the body and establish noni perpendicular to the direction of view, then combine the sight lines of the noni with the centers of the pupils, and the curved parts of the inserts 7 with the patient’s ear goats. To fix the movable elements use the side 9.

 After determining the parameters of the frame and the earhook, a cast of the patient’s nose is made, for which the cavity of the plastic material of the frame 2 is filled with hardening material, such as gypsum, after having previously installed the latch in it (position 10, FIG. 2).

 The manufacture of the model of the frame is carried out on the mounting fixture (Fig. 2) in the following sequence: install the body of the measuring device (not shown conditionally) with the nose cast on the racks 11, combine the plane A (Fig. 1) of the body with the centers of the racks and on the dividing scale of the body with the coordinates of the centers of the pupils of the patient, fix the rack, insert the latch 10 (Fig. 3) of the nose cast 12 into the spatial mechanism 13 and fasten it with the panel 14, by moving the racks 15 establish the location of the brackets for the earhooks, then measure the body tion device is removed, the brackets fixed to uprights 16, washer 17 and the rim body is made of plastic hardening model material, for example gypsum. First, form the parts of the model in contact with the cast of the nose and brackets, then the rest. The washers imitate the contour of the processed lenses, since during their manufacture the center of the hole of the washer is conditionally aligned with the center of the lens, and the contour is entered into the circle of commercially available lenses.

 Models of earhooks are made from the above material in the form of 18, having previously placed reinforcement 19 in it. After drying and finishing, the models are coated with waterproof varnish.

 Next, the frame model of the frame is installed on adjustable racks 20 (Fig. 3), in the lower mold half-mold 21, place models of earhooks and signs for injection channels (not shown conditionally), fill the mold with a solution of heat-resistant hardening material, for example, refractory cement according to TU 14-8-478-84, form the surface of the connector and after drying cover it with heat-resistant varnish. Then the upper half-mold 22 is installed, it is filled with the indicated material, after drying, the lid 23 with the injection hole is fixed, the injection cavities are coated with heat-resistant varnish and the washers 24, brackets 25 and ear hooks removed from the models are installed in them. After that, the elements of the frame are cast, they are finished, the ends of the earhooks are bent in the shape of the patient’s auricle, the lens contour is polished using washers as copiers, and the glasses are assembled.

 The manufacture of a model of a combined frame is carried out in a similar way and metal parts are built into the model, then this reinforcement is fixed in the injection mold cavity; for assembly on a mounting fixture of a metal frame, the washers 17 are adjusted along the rims of the frame, mounted on racks 11, and the frame of the frame is soldered.

Claims (1)

 A method of individual manufacturing of glasses, which consists in the fact that a measuring device is installed on the nose surface under the rim, its configuration is determined and the correct position of the lenses, the pupil coordinates, the distance between the earpieces and their length are fixed, an impression of the nose is made, then on the mounting device install a measuring device with fixed parameters of the rim, a nugget, fittings and washers that mimic the contours of the processed lenses, make models of a plastic housing they are right and behind the earhooks, after which they are fixed in a detachable injection mold, the molds are sequentially filled with a solution of heat-resistant hardening material, the reinforcement is placed in the injection cavity, the washers extracted from the models are cast and the frame of the frame and earholes are cast, then the washers are used as a copier when processing lenses and the ends of the temples are bent in the shape of the auricle.

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