JPS625201A - Lens of variable focal length and irradiation field - Google Patents

Abstract

PURPOSE:To obtain a lens of varying focal lengths and irradiation fields by filling chambers partitioned by an elastic film with fluid and changing the pressure and refractive index of the fluid. CONSTITUTION:A box having a top surface 8, bottom surface 9, right side face 12, left side face 13 and rear surface 11 is partitioned by the transparent elastic film 6 to form the 1st, 2nd, 3rd chambers 1, 2, 3. A transport pipe 4 for the fluid is provided to each chamber. An optical path to allow the passage of light only in the directions of the faces 12, 13 is constituted. The fluid is injected into and discharged from the pipes 4 into the chambers 1, 2, 3. A concave lens is formed in the 2nd chamber when the inside pressures of the 1st and 3rd chambers 1, 3 are increased. A convex lens is formed in the 2nd chamber when the inside pressures in the 1st and 3rd chambers are conversely decreased. The focal length and irradiation field are continuously changed when the inside pressures and refractive indices of the chambers 1, 2, 3 are changed. The concave and convex lenses are thereby made with a piece of the lens.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] This invention relates to a lens that changes the focal length and irradiation field of the lens.

[Conventional technology]

Conventional lenses are made of glass, plastic, etc., which do not change, and the focal length and irradiation field are unique to each lens.

[Problem that the invention seeks to solve]

Recent lenses have improved lens resolution, lens strength, and reduced lens thickness due to improvements in the quality of lens materials.
It is making remarkable progress. However, conventional lenses had the following runner-up points.

a. In order to change the focal length of a lens, there was no other way than to combine several lenses, much less converting from a convex lens to a concave lens.

Generally speaking, the only way to produce b1 colored light is to color the lens itself or to use a colored transparent plate.

To block the C0 optical path, physical obstacles had to be used in the optical path.

d. The irradiation field of a lens is usually a lens, each with its own unique features, and it was not possible to spread the light beyond its respective range with a single lens.

It is an object of the present invention to provide a lens that eliminates the runner-up problems that conventional lenses have.

[Means to solve the problem]

To achieve this purpose, the following configuration is used.

- In this invention, a lens can be formed with two or more chambers, but since a lens with three chambers is common, a lens using three chambers will be described.

As shown in Figures 1 and 2, it is made of a royal box, and the upper surface (8), lower surface (9), front surface αQ1 and back surface are made of surfaces that do not allow light to pass through. Light passes only from the direction of the optical path of the knob, the left side, and the right side. (1st room (1), 2nd room (
2)), the surface @) that separates the second and third chambers is made of an elastic transparent membrane (6). Each chamber has an import pipe (
4) and export pipe (5) are attached.

[For production]

By injecting and discharging fluid into each of the first chamber (1), second chamber (2), and third chamber (3), the refractive index and internal pressure are changed, and the second chamber is used as a lens. Furthermore, the fluid in each chamber can be colored with light, and the optical path can be blocked by filling the fluid with a substance that does not allow light to pass through.

Item (8) is to increase the internal pressure of the first and sixth chambers, and to make the second chamber a concave lens.

No. (9) is to reduce the internal pressure of the first and third chambers and to make the second chamber a convex lens.

Examples Example 1. A first embodiment of the invention will be explained in detail with reference to FIG.

In the first embodiment, these lenses are used side by side. When the present invention is used in the middle part of an optical fiber cable, the light beam can be strengthened and scattered, so it can also be used as a signal device. If a translucent film is used as the film (6), the refractive index of the lens can be naturally and freely changed using the concentration gradient of the liquid in each chamber. For example, if you reduce the amount of fluid in the first chamber and make the concentration high, and increase the amount of fluid in the second chamber and make the concentration low, what was initially convex toward the first chamber becomes water. moves to a higher concentration side, and the internal pressure of the first chamber becomes high and the internal pressure of the second chamber becomes low, so that it becomes convex toward the second chamber. Convex tabs j8kaE[! ]V7 2nd month.

〔Effect of the invention〕

This lens is made up of two or more chambers, which are separated by an elastic transparent membrane that allows light to pass through.

To use this invention, proceed as follows. By injecting and draining fluid into each chamber, the internal pressure and refractive index of each chamber are changed, and the focal length and irradiation field are continuously changed. Furthermore, from a concave lens to a convex lens, a single lens can be used. When a fluid is colored, the light that passes through the lens is colored,
Blocking is possible. This eliminates the need for slits and colored plates that have been used in the past. Additionally, the lens can be folded up when not in use, making it convenient to transport, allowing it to be used under special conditions such as outer space.

As mentioned above, this lens has special characteristics that were unimaginable with conventional lenses.

[Brief explanation of drawings]

Figure 1: Perspective sectional view Figure 2: Perspective rear view Figure 3: Top view Figure 4: Front view Figure 5: Right side view Figure 6: Rear view Fig. 7...Bottom view Fig. 8...Cross-sectional view of the concave lens of the present invention Fig. 9...
Fig. 10: A sectional view of the convex lens of the present invention...A sectional view of the lens according to the combination of the present invention Fig. 11: Rear view

Claims (1)

[Claims] A lens whose focal length and irradiation field change by filling a chamber partitioned by an elastic film with fluid, changing the pressure of the fluid, and changing the refractive index of the fluid.