JPS58203415A - Measuring apparatus mounted on spectacles frame with lens for fitting and centering spectacles to glass user - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a measuring device that is attached to a beadless eyeglass frame to fit and align eyeglasses to an eyeglass user. The present invention is of the type that is provided with a matching fixing mechanism and a measuring device for measuring the gaze points of a near vision range and a far vision range of a spectacle wearer.

In order to fit lenses into eyeglass frames, a large number of optical data measurements must be performed on the user who has selected the eyeglass frame. Particularly when fitting spectacle lenses having multiple dioptric powers, it is necessary to accurately measure the height of the near vision portion, that is, the near vision injection point. Detecting these data is time-consuming and, as is clear from practice, often results in measurement errors, wrong signs, wrong data entries, wrong conversions, or wrong alignment. In practice, the measurement device is fixed to the eyeglass frame selected by the user, the point of view is a movable perforated plate, and the height of the near vision area is measured using a sliding member for the near vision area that can be adjusted in height. Ru.

A problem with all previously known measuring devices is that they are not fixed in measurement. Furthermore, most known measuring devices are only clamped onto the spectacle frame, which means that the optical measuring element is not on the surface into which the lens will later be fitted, but is displaced from the ridge surface, which inevitably This results in an additional measurement error in the plane that causes the error.

A measuring device of the type mentioned at the outset is known from DE 26 44 460 A1. The disadvantage of this measuring device is that the reference point of the measuring reservoir cannot be changed to suit the individual spectacle frame and, on the other hand, it is impossible to carry out a reading of the scale with respect to the spectacle rim with the risk of parallax errors. There's something about it. Furthermore, known eyeglass frames are expensive in construction and relatively heavy.

Furthermore, measuring devices based on Knobloch are known, in which a template is used which is made of transparent material and must be cut out to the shape of the spectacle frame and fitted neatly into the frame.

This thin template is used to measure optical values.
It has two mutually orthogonal scales. A socket is provided in the template, and a measuring device having a receiving pin can be fitted and fixed into the socket.

The device itself consists of a bridge, on which are movable two supports that support the optical measuring device.

In this case, the point of interest is marked on the measuring plate by a phi-recorder inserted through the perforated plate;
Subsequently, the measuring plate is removed from the frame again and the detected point of interest is transferred directly or is also reflected onto the polishing device by means of a reflector system. This method is very expensive, since it is necessary to cut out two measuring plates for the respective spectacle frame and user, to fit them into the spectacle frame, and to subsequently remove them again. Even ignoring these additional work steps, a specially constructed measuring plate is required. Another drawback is that the measuring plane is not in the plane of the spectacle lens, which naturally requires a certain measuring accuracy.

The object of the present invention is to have a simple structure, light weight, be able to be adapted to each PD without requiring much expense, and not restrict or bother the user's field of view. A measuring device of the type mentioned at the outset, which has a measuring scale that is only limited to a certain extent and that allows the reference system to be adjusted to the respective spectacle frame and that allows accurate readings without parallax errors etc. It was to provide.

This problem is solved according to the invention in a measuring device of the type mentioned at the outset, in which the measuring device is fixed to the central bridge and the bridge has a scale for adjusting the distance of the measuring device to the PD of the user. an arm is movably and fixedly disposed at the center of the central bridge and perpendicular to the bridge, and the lower end of the arm has a transverse web;
The transverse web has two fixing members for fitting into the grooves of the eyeglass frame, and each measuring device has an L-shaped arm, one end of which is movably connected to the central bridge. The fixed member is attached to the center bridge and has a fixing member whose other end supports the eyeglass frame from the side and fits into a groove in the eyeglass frame, and a sliding member is movably attached to a leg extending perpendicular to the central bridge. and a web oriented inwardly perpendicular to the direction of movement of the sliding member is fixed to the sliding member, the web having another sliding member and sliding on the L-shaped arm and the leg of the web. This problem is solved in that a scale is provided to define the position of the object and an optical measuring device is fixed to the sliding member.

The measuring device according to the invention makes it possible to accurately measure the near height as well as the near gazing point and to adapt it to the PD of the respective spectacle frame. To do this, first the two L-shaped arms are slid along the central bridge marked with the PD of the eyeglass frame. After fitting the measuring device into the respective eyeglass frame, the measuring device is attached to the eyeglass frame using a fixing member that fits into a groove in which the eyeglass glass is originally fixed. For fixing, the arm placed in the center of the central bridge is slid upwards until the fixing member is fixed in the groove.

At the same time, the fixing element of the L-shaped arm is pressed downward, so that it is likewise pushed into the groove bottom.

The fixing element of the L-shaped arm, whose lateral spacing is the same as the PD of the spectacle frame, advantageously forms the zero point of the measuring reservoir. A scale is arranged on the L-shaped arm, with which the distance of the perforated plate or the lifting sliding member from the reference point can be read. The perforated plate is fixed to a web, which is connected to a sliding member, which is movable relative to the L-shaped arm. This web likewise has a scale mark, the zero point of which is again the lower fixed point;
That is, the scale also starts from the same reference point.

The fixation of the point of gaze and the height of the near portion is carried out in the usual manner. In this case, since both the perforated plate and the elevating and sliding member are located on the lens surface, no errors can occur. Furthermore, the scale can be read in the form of a slider, so that no .xi.rarax errors can occur when reading this value. The read value represents the lateral deviation of the glasses from the PD as a plus or minus. The value perpendicular to this represents the distance of the gaze point from the groove bottom. In this case, therefore, two values can be detected for each lens and used directly to manufacture the lens to be fitted, since these values align the center vertical line of the spectacle frame. This is because it is used as a standard. The center vertical line representing this zero line passes exactly through the center point of the template, so the detected coordinates can be used as is for a replacement eyeglass holder for the same eyeglass frame holder.

The invention will now be described in detail with reference to the illustrated embodiments.

The measuring device 1 shown in the drawing consists of a central bridge 2 on which an L-shaped arm 3.4 is held slidably in the longitudinal direction. Two threaded spindles (not shown) are arranged in the central bridge, which spindles are rotatable by means of a knurled screw 5.6. A threaded nut is arranged at the upper end of the L-shaped arm and is moved inside the central bridge by rotation of a threaded spindle. Two marks 7.
8 is provided, the mark being on a scale 9. arranged on the L-shaped arm. Collaborate with IO. Each scale 9.10 is PD
The L-shaped arms 3, 4 have a scale corresponding to half the short distance and therefore the respective PD of the spectacle frame to be precisely measured.
The eyeglass frame is adjustable and accurately symmetrical with respect to the center of the eyeglass frame.

The L-shaped arms 3, 4 each have a leg 12.13 pointing toward the center of the central bridge 2, on which a fixing member 14 in the form of a flange 15 is provided, which is fixed to an inwardly directed pin 16. ing.

The flange 15 fits into a groove 17 formed for fixing a spectacle lens. Fixed points 14 on both sides of the L-shaped arm
The distance should correspond exactly to the distance adjusted in the central bridge 2 and be adapted to the PD of the respective spectacle frame. The fixed point 14 forms a reference point for the scales 18, 19 provided on the L-shaped arms 3, 4.

Leg 2 of the L-shaped arm extending perpendicular to the central bridge
0.21 sliding member 22.23 force (moveable,
On said sliding member perpendicular to the direction of sliding force and leg 18.2
Each web 24, 25 is fixed perpendicularly to zero. Each web 24.25 supports a scale 26.27;
The reference point of the scale is the respective fixed point 14. A sliding member 28.29 is arranged on each web 24, 25, which member comprises a perforated plate 32.33 fixed to an arm 30.31.
has.

The sliding members 22 and 23 have lifting sliding members 34 and 34, respectively.
' is fixed and the member is used to measure the near height.

At the center of the central bridge 2, an arm 35 is vertically fixed movably and fixedly with a locking nut 42. The arm has a notch 37 and a threaded pin 3 with a gear that engages the notch with the rack.
8 is passing through. To adjust the height, move the bin 38 to the head 36.
This can be done by rotating it. Arm 3
5 has a laterally extending web 40 with two fixing members 39 arranged at a distance from each other at its lower end;
The fixing member has the same structure as the fixing member 1 and fits into the groove 17 of the eyeglass frame 11.

When fixing the measuring device 1, first align the PD short distance of the PD short distance eyeglass frame. Continue to insert the fixing member 14 into the lower groove 1.
7, and then the arm 35 is attached to the upper fixing member 39.
are fixed in the groove 17 and both are pushed upwards with a groove that is tightened in opposite directions within the spectacle frame. Continue to tighten nut 4
Pinch 2 and fix the position. Scales 18.19 and 26.27 are based on the center vertical line of the eyeglass frame. Therefore, the scale 26.27 can be used to directly read the deviation from the center vertical line, and the scales l 8 and +19 can be used to directly read the height above the groove bottom. can. Scale 18.19 has two graduations. The left half of the scale is the groove bottom 1 which coincides with the fixed point 14.
The height of the perforated plate 32 on 7 is used as a reference. The scale on the right side is based on the upper edge of the elevating and lowering sliding member 34' for the near portion. When measuring only with the lifting and lowering sliding member for the near area, slide the perforated plate to the left and right with the sliding pieces corresponding to its webs 24 and 25, respectively, and move the perforated plate out of the field of view. can be located in Furthermore, the element for measuring the optical values reaches into the field of view of the eye from below, which provides the advantage that the eye can still see clearly during the measurement period. Moreover, since all the elements for measuring the optical values are in the plane of the lens, errors that could result from arranging these measuring elements in other positions are avoided. Furthermore,
The scale can be read without .xi.rarax error. All test values are referenced to the center vertical line and can therefore be used directly.

[Brief explanation of drawings]

FIG. 1 is a front view of the measuring device of the present invention, and FIG. 2 is a side view of the device shown in FIG. 2... Center bridge, 3, 4... L-shaped arm, 9
．． 10...Scale, 11...Eyeglass frame, 14.39
...Fixing member, 17...Groove of eyeglass frame, 18, 19.
26.27...Scale, 20,21...Legs, 22
．． 23, 28.29... Sliding member, 24.25... Web, 32.3.3, 34.35... Optical measuring device (35... Arm) 40... Lateral web sub-representation Person Patent Attorney Satoshi Yano Procedural Amendment (Spontaneous) June 27, 1980 Dear Commissioner of the Japan Patent Office 1, Indication of the case 1980 Patent Application No. 80226 2, Title of the invention 3, Person making the amendment Relationship to the case Patent applicant 4, Sub-agent 6, Claims column of the specification to be amended and Detailed description of the invention column 7 Contents of the amendment (li) The scope of claims is amended as shown in the attached sheet. (2) The "injection point" on page 3, line 15 of the specification is corrected to "1 gaze point". A measuring device that is attached to an eyeglass frame without a lens, and includes a fixing mechanism that fits into a groove in the eyeglass frame for fixing the lens, and a fixing mechanism that fits into a groove of the eyeglass frame to fix the lens, and a measurement device that measures the gaze point of the near vision range and far vision range of the eyeglass user. In the type equipped with a measuring device (34, 35, 32, 33'), the measuring device (34, 35, 32, 33') is connected to the central bridge (
2), the bridge has a scale (9, 10) for adjusting the distance of the measuring device according to the user's PD, and is located in the center of the central bridge (2) and on the bridge. An arm (35) is movably and fixedly arranged perpendicularly to the frame, and the lower end of the arm has a horizontal web (40), and the horizontal web fits into the groove (17) of the eyeglass frame (11). each measuring device has an approximately L-shaped arm (3, 4), one end of which is movably attached to the central bridge (2). A fixing member (14) whose other end supports the eyeglass frame (11) from the side and fits into the groove (17) of the eyeglass frame (11).
The sliding members (22, 23) are movably attached to the legs (20, 21) extending perpendicularly to the central bridge (2). Inwardly directed webs (24) perpendicular to the direction of movement of the member
, 25) are fixed, and the web is attached to another sliding member (28, 25).
29), and a sliding member (22) is attached to the leg (20, 21) of the L-shaped arm (3, 4) and the web (24, 25).
, 23, 28, 29) are provided with scales (18, 19, 26', 27) and optical measuring devices (
a2. , s3.3+, a5), which is attached to a beadless eyeglass frame for fitting and aligning eyeglasses to an eyeglass user.

Claims (1)

[Claims] 1. A measuring device that is attached to a beadless eyeglass frame in order to fit and align eyeglasses for an eyeglass user, and a fixing mechanism that fits into a groove in the eyeglass frame to fix the lens;
In the case of a type equipped with a measuring device for measuring the gaze point of the near vision range and the far vision range of a spectacle wearer, the measuring device (34, 35, 32, 33) is connected to the central bridge (2). scales (9, 10) fixed to the bridge and for adjusting the distance of the measuring device according to the PD of the user;
, an arm (35) is movably and fixedly disposed in the center of the central bridge (2) and perpendicular to the bridge, and the lower end of the arm has a transverse web (40); The transverse web has two fixing members (39) that fit into the grooves (17) of the spectacle frame (11), and each measuring device has a respective roughly L-shaped arm (3°4). one end of the arm is movably attached to the central bridge (2), and the other end supports the eyeglass frame (11) from the side and is fixed to fit into the groove (17) of the eyeglass frame (11). The sliding member (22, 23) is movably attached to legs (20, 21) extending perpendicularly to the central bridge (2). , 23) with inwardly directed webs (24, 23) perpendicular to the direction of movement of the member.
25) is fixed and the web is connected to another sliding member (28, 2).
9), and sliding members (22,
Scales (18, 19, 26, 27) are provided to define the position of 23°2, 8.29), and optical measuring devices ( 3
Patent: 2, 33, 34, 35) A measuring device for measuring beads on a beadless eyeglass frame for fitting and aligning eyeglasses for a mirror user.