JPH03257422A - Varifocal spectacles - Google Patents

Abstract

PURPOSE:To provide the spectacles which can freely change focuses by packing a transparent liquid between two pieces of deformable lenses having elasticity, hardness and thickness, hermetically closing the lenses and changing the pressure of the transparent liquid by a liquid pressure pump. CONSTITUTION:These spectacles are constituted by forming an outside plate 2 and inside plate 8 of veneer lenses of the transparent deformable lens material having the elasticity, hardness and thickness, elastically and hermetically closing the entire peripheral edge of these plates with a spacing ring 5 apart a suitable spacing placed between the plates, communicating the hermetically closed space and the liquid pressure pump 10 installed in the upper part of the spectacle front via a communicating hole 6, and packing the transparent liquid into the hermetic space, the connecting hole 6 and the inside of the pump 10. The lens consisting of the inside plate 8 and the outside plate 2 is changed to a convex lens shape or concave lens shape by increasing or decreasing the pressure of the transparent liquid in the hermetic space by the liquid pressure pump 10. The free changing of the focuses is possible in this way and further, the liquid pressure pump 10 is designed to be operated separately for one eye on the front.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a lens for eyeglasses, such as a concave lens or a convex lens whose focus can be freely changed.

(Conventional technology) Until now, there were no regular glasses that could change their focus.

(Problems to be Solved by the Invention) Conventionally, optical lenses have been molded from glass, and the focal point is always constant, and the only way to change this is to change the fulcrum distance.

For this reason, people who have had their crystalline lenses removed and inserted artificial lenses due to cataracts need to maintain a constant focal point and wear and adjust glasses with different focal points depending on the purpose of viewing. There are problems such as the number of transfers and replacements.

(Means to solve the problem) Instead of solid glass, we used a transparent plate of appropriate hardness and a hydraulic pump to pump liquid through the surface, changing the refraction of light and creating lenses with a free focal point in glasses. Equipped.

(For I) We used a lens that becomes concave and convex depending on high, low, or negative fluid pressure, and whose focus can be set freely.

(Example) Several examples of implementation of this invention will be described below based on the drawings.

FIG. 1 is a standard structural diagram of variable focus glasses according to the present invention, and the structure of the lens (1) is shown in FIGS. 4 and 5, with two lenses on both sides. The outer plate (2) and the inner plate (8) are made of suitable hardness and elastic extensible plate material, and the inner space is closed airtightly with an elastic annular spacing ring (5) around the entire circumference. The inside is sealed, and this sealed space is communicated with a suitable hydraulic pump (10) installed on the outside upper part of the front of the glasses via a connecting hole (6), and the airtight part and this connecting hole, Fill the space inside the pump with an appropriate transparent liquid (3), seal it, and pressurize the liquid between the two plates through the operation of the hydraulic pump to narrow the transparent liquid (3) between the two plates. The cross sections of (2) and (8) are changed from the current state to a convex lens shape that curves and protrudes in the direction of arrow (9),
Conversely, by releasing the pressure or creating a negative pressure, the cross section becomes concave as shown by the arrow (11) from the current lens shape, changing to a concave lens.This allows the focal point to change freely and reduces the fluid pressure. It is a concave-convex variable focus eyeglass lens that is characterized by its ability to stabilize its focus unless it is changed.

The pump (10) is neatly mounted on the front, and one side is
Each control pressure is applied.

Inside this is a screw (13
), and a rotary knob (17) is fixed to the outside. The internal screw (13) is fitted with a nut (1) with a packing.
4) is inserted, and a piston made of packing material (1
5), and by rotating the knob (17) left and right in the direction of the arrow (18), the piston (15) moves in the direction of the arrow (16), allowing the internal liquid (3) to enter the lens through the hole (6). press,
Pull it out again.

In this way, by rotating the knob (17) left and right, the spectacle lens can freely change in infinite steps from becoming a concave lens, becoming a flat lens, and then becoming a convex lens, and then stopping.

FIG. 8 shows an example of another type of hydraulic pump (25), in which a piston (21) is installed in a cylinder (19) with a long bag nut (
The rotatable screw (20) is attached to the screw (20) through the screw (24-2) and has a rotary knob (17) fixed on the outside thereof, and the knob (17) can be rotated left and right in the direction of the arrow (18). Then, connect the piston (21) via the screw (20) and nut (22).
) as arrow 24). Due to this movement, the liquid (3) inside the cylinder enters and exits from the port (23).

In FIG. 2, the lens is a double lens according to the present invention, and a pump (25) is attached to an appropriate position of the spectacle temple, and a hose (25) is used to communicate the liquid in the pump with the pump.
26), which is fed into the double lens and pulled out, or, instead of a hose, is passed through the appropriate inside of the temple (26) and communicated with it to exhibit the above-mentioned lens effect. .

In FIG. 3, the lens is a double lens according to the present invention, and a hose (27) of an appropriate length communicates with the inside of the lens.
is attached to an appropriate position on the glasses temple, and the end thereof is connected to a pump (25) placed in an appropriate place, such as in a pocket of clothes, or as an alternative route, a hose (28) is connected to the temple. (26) A display (27
) or (28) into the double lens, and
Something to pull out, or a temple (26
) and communicate with each other through the appropriate interior of the lens to exhibit the above-mentioned lens effect.

In this way, the focus of the eye's perspective can be adjusted casually in the pocket or in the hand.

Figure 6 shows the date (29) inside the double lenses (2) and (8).
sandwich the airtight bag (30) and insert the flange (3) from both sides of the lens.
1), etc., are the ones that are improved by sealers.

At this time, one method is to apply an appropriate adhesive between the lens and the bag to finish the lens with adhesive.

FIG. 7 is a structural diagram of a single lens, and when the plane of the lens is not circular, there is a problem in that distortion occurs due to unevenness due to hydraulic pressure. In order to solve this problem, it is necessary to make the necessary parts of the lens predetermined according to the power.

[Brief explanation of drawings]

1, 2, and 3 are perspective views of glasses according to the present invention. Figure 4. 1 shows the structure of one side of the glasses, and A is a front sectional view approximately at the center. B is a side view. C,D. E is a side center sectional view. FIG. 5 is a sectional view of A, B, and C. FIG. 6 is a perspective view of one combination before. Figure 7 is a structural diagram of a single lens, and Figure A is a plan view. B is a central sectional view. FIG. 8 is a structural diagram of the pump, and A is a front sectional view. B is a sectional view taken along the - dotted chain line (3+). It is.

Claims (1)

[Claims] 1. For spectacle lenses, a single lens is made from a lens material having an appropriate hardness and a predetermined elastic body material, with a desired shape and a desired thickness at a designated position, and two of these lenses, The entire outer periphery of the lens is made to communicate with the appropriate position of the polymeric lens, which is elastically sealed, and the liquid inlet/outlet of an appropriately structured hydraulic pump attached to an appropriate position such as the eyeglass frame, using an appropriate method, and the inside of the double lens is The focus of the entire lens can be changed by filling the inside of the pump with a transparent or appropriately transparent liquid, sealing it, and changing the liquid pressure between the double lenses via a hydraulic pump. Features variable focus glasses. 2. The first invention, in which a hydraulic pump is attached to an appropriate position on the front upper part of the glasses, and the liquid from this pump can be introduced into and out of the double lens either directly or through an appropriate tube. 3. The first invention, in which a hydraulic pump is attached to an appropriate position on the temple of the glasses, and the liquid from the pump can enter and exit between the double lenses via a free tube or the like. 4. The first feature is that the pressure liquid of a hydraulic pump communicating with the hose can be taken in and out of the double lens of the glasses through a hose of a suitable structure that communicates with the inside of the double lens of the glasses.
invention of. 5. A suitable transparent airtight bag with a free opening is inserted into the double lens either directly or with a suitable adhesive attached, and liquid from the hydraulic pump can be taken in and out of the double lens through this bag. 1. Invention. 6. The first invention, characterized in that the thickness of the lens at a predetermined position is set to a predetermined thickness so that the uneven movement of the lens can be smoothly executed into a desired shape.