CS225448B1 - A device for measuring the directional error error - Google Patents

Abstract

The invention belongs to the field of optics and solves a device for measuring the error of directional coordination of the eyes, consisting of an eyepiece part, an object part, which are stored in a common housing. Its essence is that the object part contains test patterns and the eyepiece part contains a rotatably stored interrupting screen across the visor, in which optical elements, a masking glass and at its end there are compensation wedges. The invention is illustrated in the attached drawing in Fig. 1.

Description

1 22S 448

The invention relates to a device for measuring the directional error of the eye action.

Correct spatial vision and perception of the people require the visualization of the observed object on the corresponding sites of the mesh net · To clarify the activity, we will mention a few concepts with which we will work · The physiological state of v is called the eye condition when the subject's eyes are minimally stressed. we call a state of the eye when the correct perception of patterns is ensured. For optimum eye activity, the physiological and actual eye condition of small variations in physical and actual condition is required to provide correct eye corrections using eye analysis of the subject being observed. Action transport mechanisms are manifested by increased organ retroreflection * For large variations, the correction mechanisms of the eye are no longer sufficient to ensure the true condition · This results in a loss of spatial vision and bifurcation. It is advisable to consider and correct this disorder in the treatment of visual disturbances. At present, there is no device to measure this disturbance and with the help of a compensation method to measure the angle difference between physiological state and actual state.

The aforementioned drawbacks provide a device for measuring the bending direction of the eyes consisting of an eyepiece part of the subject part which is housed in a common housing, the subject matter of which is that in the object part test patterns and in the eyepiece part are rotatable the interrupted shading of the visor is stored optical elements, masking glass, and compensating wedges at its end · - 2 225 448

The device of the invention is used as follows. Cover one eye and observe the test image simultaneously with the other eye. In this situation, the repair mechanisms and eyes do not work for the physiological condition. Quickly uncovering the eye creates a perception of a pair of test patterns shifted together.

In case of small deviations, the repair mechanism quickly corrects it. If, at the same time, the other eye is concealed while exposing one eye, the difference between the actual and physiological states appears to be by skipping the test pattern. The second effect is more pronounced and therefore more suitable for measurement. Thus, the same mode is used to cover the other when uncovering one eye. We select the exposing intervals in the range of 0.2-5 s. At this point, the test person uses a compensating device to set at least the hopping of the test pattern. The advantage of the device according to the invention is that it makes use of the phenomenon resulting from various ways of interrupting the function of repairing non-grains in the eye and the use of masking glasses limits the subjective factor.

FIG. 1 shows a schematic view of the invention, FIG. 2 shows a test screen, FIG. 3 shows a break screen, FIG. 4 shows a compensation wedge, and FIG. 5 shows a ocular part. ^ ner ^ yt ('e. jøwewy & y scZ & nnos-ç & ι yýat /

Tiakobr. 1 consists of an eyepiece part 11 made of a part which is housed in a common housing 3, in the object part 1 '. the test patterns 4 are shown in FIG. 2a is a simple type and FIG. 2b is a double type. FIG. 3 shows a semicircular sector shading screen. The compensation wedges 8 in FIG. 4 are in the form of a variable optical wedge. In the dual test pattern 4, the compensation can be done by sliding one portion of the pattern against the other, or a combined compensation can be made. The eyepiece part 1 in Fig. 5 consists of a rotatably mounted break-out screen 5 across the viewing window 9, in which the optical members 7, the masking glass 6 are accommodated and the wedges 8 are compensated at its end.

Claims (1)

PRIOR TO METHOD 225 448 An apparatus for measuring a directional error error consisting of an eyepiece portion of an object portion that is stored in a common housing characterized in that the test image is stored in the subject portion (2). ) and in the eyepiece (1) there is a rotatably mounted interrupting screen of the space (9), the optical elements (7), the camouflage glass (6) and the compensating wedges (8) at its end »