JPH052104A - Focus variable lens - Google Patents

Abstract

PURPOSE:To use one lens as a convex or concave lens by varying the shape of a transparent body or double-plate lens into a convex or concave lens shape through an airtight bag by the operation of a compressing/expanding tool. CONSTITUTION:The outer periphery of plane plates 2 and 3 are sealed hermetically and elastically by an interval holding ring 4, and the airtight bag 5 is charged in this airtight space and then filled with a liquid transparent body like water or a jellylike or semisolid transparent body 6. When the compressing and expanding tool, e.g. crank or screw 7 mounted on the outer periphery of the double-plate lens or mounted through a ring-shaped packing is clamped to press the transparent body 6 through the airtight bag 5, the sections of the plane plates 2 and 3 are formed in a convex lens shape, but when the plane plates 2 and 3 are expanded and deformed by loosening the screw 7 to make the internal pressure in the transparent body 6 negative, the sections of the plane plates 2 and 3 are formed in the concave lens shape. The lens 1 which is freely varied in focus is therefore obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens whose focus can be freely changed so that it can be a convex lens or a concave lens as a single lens. .

[0002]

2. Description of the Related Art Heretofore, it has been desired to use a lens that can change a single length focus.

[0003]

Conventionally, an optical lens is made of glass and its focal point is always constant, and there is no means other than changing the viewpoint distance for changing the focal point.

[0004]

SUMMARY OF THE INVENTION The present invention is an airtight bag in which a transparent body such as a liquid, a jelly-like body or a semi-solid body is enclosed in place of glass, a deformable flat plate or a curved plate, and compression / expansion. By using a tool, the refraction of light due to the shape change of the transparent body was changed, and the focus of the lens was freely changed.

[0005]

EXAMPLES In the examples of FIGS. 1A, B, C, D and E,
(1) shows a configuration of a lens having a variable focus according to the present invention and a change in shape when the lens is used. (2) is a flat plate that serves as an inner plate of the lens (1), (3) is a flat plate that serves as an outer plate of the lens (1), and is a flat plate installed at a desired interval, (2) All of (3) are transparent or almost transparent, and are formed of a deformable lens material having elasticity, hardness, and thickness, and have a circular shape or a desired shape. Reference numeral (4) is a space-holding ring, and the outer space of the flat plates (2) and (3) is elastically sealed by the space-holding ring (4) to form a multi-plate lens that creates a sealed space. An airtight bag (5) is enclosed in the space, and is also enclosed in the outer peripheral ring of the airtight bag (5) via a backing. The airtight bag (5) is filled with a liquid transparent material such as water, or a jelly-like or semi-solid transparent body or a substantially transparent body (6). Reference numeral (7) is a compression / extension tool such as a crank or a screw, which is mounted on the outer circumference of the double plate lens and also via a link-shaped backing. When the screw (7) is tightened and the transparent body (6) is pressed through the airtight bag (5), the plane plates (2) and (3) have convex lens-shaped cross sections, and conversely, the screw (7). When the flat plates (2) and (3) are stretched and deformed to make the internal pressure of the transparent body (6) negative, the cross sections of the flat plates (2) and (3) have a concave length shape. Thus, the lens (1) having a freely changing focus can be obtained, and if the screw (7) is fixed and fixed, the focus of the lens (1) can be stabilized.

FIG. 2 shows ring-shaped (8), (9) which is another example of the compression / extension device.
(4), (5) and (6) are the same as in FIG. The wedge (9) in FIG. 2B is integrally fixed to the spacing ring (4).

The embodiment of FIGS. 3A, B, C, D and E is shown in FIG.
(1) is a lens according to the present invention whose focal point changes. (4), (5),
(6) and (7) are the same as in FIG.

In the embodiment shown in FIGS. 4A and 4B, (1) shows the structure of the lens according to the present invention whose focal point changes. (1
Reference numeral 0) is a curved plate serving as an inner plate of the lens (1), and (11) is a curved plate serving as an outer plate of the lens (1). Curved plate (1
Each of 0) and (11) is transparent or almost transparent and is formed of a deformable lens material having elasticity, hardness, and thickness, and has a circular shape or another desired shape.
(4), (5), (6) and (7) are the same as in FIG.

In the embodiment shown in FIGS. 5A and 5B, (1) shows the structure of the lens according to the present invention whose focal point changes.
(4), (5), (6), (7), (10), (11)
Is similar to FIG. However, in this example,
The spacing ring (4) and the curved plate (11) serving as the outer plate are integrated with each other, and the curved plate (11) is fixed.

In the present invention, of the two flat plates, one of which is thick and the other of which is thin is used, and the thick flat plates are installed as outer plates with a space therebetween. When the two curved plates are made to have the same thickness and are installed as the inner plate and the outer plate at intervals, one of the two curved plates is thick and the other is Use one that is thin and install both curved plates so that the center part is narrow and the outer peripheral part is wide with a space between them, or the center part is wide and the outer peripheral part is narrow. It may be installed as described above, and in any case, it is included in the present invention. Furthermore,
It should be understood that in the present invention, the flat plate and the curved plate may be formed such that the thicknesses thereof are partially different.

[0011]

As described above, the lens having a variable focus according to the present invention can be used as a convex lens or a concave lens without adjusting the focus with a single lens. Therefore, not only is there an advantage that it can be used according to the visual acuity of individual items, but there is also an advantage that it can be shared by many people with different visual acuity. Therefore, it can be widely used as a lens for spectacles other than a magnifying glass and can exert an effect different from that of a normal glass lens.

[Brief description of drawings]

1A, 1B, 1C, 1D, 1E, 1A, 1B, 1C, 1D, 1E, 1A, 1B, 1C, 1D, 1E, 1A, 1B, 1C, 1D, 1E, 1A, 1B, 1C, 1D, 1E, 1C, 1D, 1E, 1C, 1D, 1D, 1D of the lens of varying focus. A is a plan view, B is a rear view, and C, D, and E are central cross-sectional views.

FIG. 2 is an explanatory view of A, B, C, D, E and a ring-shaped wedge, where A is a plan view and B and C are side views, but with diagonal lines. D and E are sectional views.

3A, 3B, 3C, 3D, 3E, 3A, 3B, 3C, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3E, 3D, 3D, 3E, 3D, 3E, 3D, 3D, 3D FIG.

FIG. 4 illustrates another type of variable focus lens configuration. A is a plan view and B is a central sectional view.

FIG. 5 shows another type of variable focus lens configuration. A is a plan view and B is a central sectional view.

[Explanation of symbols]

(1) Lens with variable focus (2) Inner plate (flat plate) (3) Outer plate (flat plate) (4) Space retaining ring (5) Airtight bag (6) Transparent body (7) Screw (8) Ring-shaped wedge (9) Ring wedge (10) Inner plate (curved plate) (11) Outer plate (curved plate)

Claims (11)

[Claims] 1. A compression / extension tool such as a screw, a ring wedge or a crank is attached to the outer periphery of an airtight bag filled with a transparent body or a substantially transparent body such as a liquid, a jelly-like body or a semi-solid body. A constructed variable focus lens, the airtight bag being transparent or nearly transparent, formed of a deformable airtight material having elasticity, hardness and thickness into a circular or other shape, When the stretcher presses the transparent body through the airtight bag, the cross section of the airtight bag becomes a convex lens shape, and conversely, when the compression stretcher is loosened to make the transparent body negative pressure, the cross section of the airtight bag However, it is a concave lens shape, and the focus is changed and the focus is changed. 2. A transparent or nearly transparent deformable plane plate or lens plate having elasticity, hardness and thickness, one of which is an outer plate and the other of which is circular or has another shape. The sheets are installed at intervals so as to become inner plates, and the entire periphery is elastically sealed by a spacing ring to form a sealed space. Alternatively, an airtight bag filled with a transparent body such as a semi-solid body is enclosed, and a compression / expansion tool such as a screw, a ring wedge or a crank is attached to the outer periphery of the double plate lens, When pressure is applied to the transparent body through the airtight bag with the stretching tool, the cross-sections of both flat plates become convex lens shapes, and conversely, when the compression / stretching tool is loosened to make the pressure of the transparent body negative, The cross-sections of both flat plates are concave lens shape, and the focus can be changed freely and Lens foci wherein there that no such stable changes. 3. A transparent or nearly transparent deformable curved plate or lens-shaped curved plate having elasticity, hardness, and thickness, one of which is an outer plate, and the other of which is circular or has another shape. One sheet is installed at intervals so as to be an inner plate, and the entire periphery of these sheets is elastically sealed by a spacing ring to form a sealed space. An airtight bag filled with a transparent body such as a body or a semi-solid body is enclosed, and a screw, a ring-shaped wedge or a compression / expansion tool such as a crank is attached to the outer periphery of the double-plate lens. When the compression / expansion tool pressurizes the transparent body through the airtight bag, the cross sections of both flat plates become convex lens shapes,
On the contrary, when the compression / expansion tool is loosened and the pressure of the transparent body is made negative, both flat plates have a concave lens shape so that the focal point can be freely changed and stabilized. A lens whose characteristic focus changes. 4. A transparent or almost transparent deformable plane plate or lens plate having elasticity, hardness and thickness, one of which is thick and the other of which is circular and has another shape. Liquids, jelly-like bodies or semi-solids are placed in this closed space in which the thinned ones are installed at intervals, and the entire peripheral edges are elastically sealed by a spacing ring to form a sealed space. An airtight bag filled with a transparent body such as a solid body is enclosed,
A structure in which a compression / expansion tool such as a screw, a ring-shaped wedge, or a crank is attached to the outer periphery of the multi-plate lens,
When the compression / expansion tool pressurizes the transparent body through the airtight bag, the cross section of the thin flat plate becomes a convex lens shape, and conversely, when the compression / expansion tool is loosened to make the pressure of the transparent body negative, A lens with a variable focal point, which is characterized in that the thin flat plate has a concave lens shape in its cross section so that the focal point is freely changed and stabilized. 5. A transparent or nearly transparent deformable flat plate or lens-shaped plate having elasticity, hardness and thickness, one of which is an outer plate and the other of which is circular or has another shape. The sheets are installed at intervals so as to become inner plates, and the entire periphery is elastically sealed by a spacing ring to form a sealed space. Alternatively, an airtight bag filled with a transparent body such as a semi-solid body is enclosed, and a compression / expansion tool such as a screw, a ring wedge or a crank is attached to the outer periphery of the double plate lens, When pressure is applied to the transparent body through the airtight bag with the stretching tool, the cross-sections of both flat plates become convex lens shapes, and conversely, when the compression / stretching tool is loosened to make the pressure of the transparent body negative, The cross-sections of both flat plates are concave lens shape, and the focus can be changed freely and Lens foci wherein there that no such stable changes. 6. A transparent or nearly transparent, deformable double-sided plate or lens-shaped plate having elasticity, hardness, and thickness, which is circular or has another shape, one of which is spaced apart from the other. It is installed so that the central part is narrow and the outer peripheral part is wide, and all the peripheral edges are elastically sealed by a spacing ring to form a sealed space. An airtight bag filled with a transparent body such as a solid body or a semi-solid body is enclosed, and a compression / expansion tool such as a screw, a ring wedge or a crank is attached to the outer periphery of the double plate lens. When the compression / expansion tool pressurizes the transparent body through the airtight bag, the cross-sections of both curved plates have a convex lens shape, and conversely, when the compression / expansion tool is loosened to make the pressure of the transparent body negative. In addition, the cross section of both curved plates is concave lens shape, and the focus is free Turned into and lens focus to wherein there that no such stable changes. 7. A transparent or nearly transparent, deformable double-sided plate or lens-shaped plate having elasticity, hardness, and thickness, which is circular or has another shape, one of which is spaced apart from the other. It is installed so that the central part is wide and the outer peripheral part is narrow, and all the peripheral edges are elastically sealed by a spacing ring to form a sealed space. An airtight bag filled with a transparent body such as a solid body or a semi-solid body is enclosed, and a compression / expansion tool such as a screw, a ring wedge or a crank is attached to the outer periphery of the double plate lens. When the compression / expansion tool pressurizes the transparent body through the airtight bag, the cross-sections of both curved plates have a convex lens shape, and conversely, when the compression / expansion tool is loosened to make the pressure of the transparent body negative. In addition, the cross section of both curved plates is concave lens shape, and the focus is free Turned into and lens focus to wherein there that no such stable changes. 8. The lens with variable focal point according to claim 2, wherein the flat plate and the curved plate of the double-plate lens are formed so that their areas are partially different from each other. . 9. The lens according to claim 1, wherein the outer circumference of the double plate lens is fixed integrally with the spacing ring. 10. A flat plate and a curved plate of the double-plate lens and the single-plate lens are each shaped in a direction to repel the compression / expansion tool. A lens whose focus changes. 11. An airtight bag filled with a transparent or substantially transparent body such as a liquid, a jelly-like body or a semi-solid body in a part or all of the flat plate and the curved plate of the double plate lens. Of the airtight bag adhered to a transparent body such as the outer periphery or jelly-like body or semi-solid body, or filled with a transparent body or a substantially transparent body such as liquid, jelly-like body or semi-solid body or The lens with variable focus according to any one of claims 2 to 7, characterized in that a flat plate and a curved plate are adhered or coated on a transparent body such as a jelly-like body or a semi-solid body.