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Downward eyeball movement measuring jig, jig affixing device, and downward eyeball movement measuring method
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A measuring method and technology of downturn amount, which can be applied to glasses/safety goggles, glasses/goggles, eye testing equipment, etc., which can solve the inspection burden of expensive inspection equipment, difficulty in determining the accuracy of the near eye point, and customer time. Large problems such as simple measurement and inspection, simple attachment or peeling, and cost reduction
Inactive Publication Date: 2011-03-23
HOYA LENS MFG PHILIPPINES INC
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[0007] In Patent Document 1 and Patent Document 2, quantitative values can be obtained using a head and eye movement measuring device, and lenses most suitable for each individual can be provided based on these values. However, in addition to head and eye movements, posture It also has a lot to do with the determination of the near eye point of the progressive power lens, so sometimes it is difficult to determine the near eye point with high precision
[0008] In addition, in eye movement measurement such as Patent Document 1 and Patent Document 2, there are also problems that the inspection burden on the client is too large in terms of time, and that the inspection equipment is too expensive.
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no. 1 Embodiment approach
[0085] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
[0086] In a store or the like, the inspection spectacle lens is mounted on a spectacle frame actually purchased by a consumer, and the downward rotation amount of the inspection spectacle lens is measured using the eyeball downward movement measurement tool of the present invention. As the inspection spectacle lens, for example, an acrylic resin without prescription can be used. Then, spectacle lenses are designed based on the measured downward rotation of the eyeball. The spectacle lens is a progressive dioptric power lens, and when it is necessary to confirm whether the progressive dioptric power lens conforms to the design, the eyeball downward rotation measurement tool of the present invention can be applied to the designed spectacle lens.
[0087] In addition, in this embodiment, the vertical direction when wearing glasses is the up-down direction, and the ...
no. 2 Embodiment approach
[0157] Next, a second embodiment of the present invention will be described with reference to the drawings. Since the structure of the spectacle lens (progressive power lens) of the second embodiment is the same as that of the first embodiment, description thereof will be omitted.
[0158] (1. Eyeball downward movement measurement tool)
[0159] Figure 8 A state in which the eyeball rotation measurement tool according to the second embodiment is attached to the inspection spectacle lens 12 is shown. In the second embodiment, using Figure 8 The strip-shaped masking film 70 is shown as a measuring tool for measuring the length of the downturn of the eyeball.
[0160] The strip-shaped masking film 70 is formed by a see-through transparent film, and has: a rectangular adhesive portion 71, one surface of which is attached in a detachable manner; and a pair of non-adhesive portions 72, which are connected to the adhesive portion The opposite two sides of 71 are adjacently arra...
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Abstract
The present invention provides a downward eyeball movement measuring jig, a jig affixing device and a downward eyeball movement measuring method, which can perform downward eyeball movement measuring of a progressive diopter lens simply with low price and high precision. Each belt-shaped shading film (3) comprises the following components: a tape base (31) which is provided with an adhesion portion (311) with one surface that is adhibited detachably; and a folded portion (32) which is provided at one end of the tape base (31). One edge in two opposite edges of the tape base (31) is set to a first edge (33), and the other edge is a second edge (34). The tape base (31) is configured to a width that the first edge (33) of the tape base (31) is consistent with a far eyespot line of an examination eyeglass lens (12), and the second edge (34) is consistent with a near eyespot line, thereby performing measurement.
Description
technical field [0001] The invention relates to a tool for measuring eyeball downward movement of spectacle lenses, a tool attachment device and a method for measuring eyeball downward movement. Background technique [0002] When people observe an object, they need to turn their head or turn their eyes in order to observe the side or up and down (called visual action). Such head rotation angles and eye rotation angles are unique to individuals, and various eyeglass lens design methods and adjustment methods corresponding to such individual visual movements have been proposed (for example, refer to Patent Documents 1 and 2). [0003] The progressive refractive power lens is an aspheric lens having a distance portion area and a near portion area, wherein the distance portion area has a refractive power (diopter) corresponding to distance observation, and the near portion area has a refractive power corresponding to short-distance observation. The distance portion area is set ...
Claims
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