JPH01134419A - Polarizing spectacles for stereoscopic image - Google Patents

Abstract

PURPOSE:To improve wearability and to form the title spectacles in such a manner that the same spectacles can be mounted to wide range of wearers of different face sizes by curving laminated sheets of plastics. CONSTITUTION:Two sheets of polarizing plates 11 which are formed by adhering and supporting one face of a polarizer consisting of an iodine/polyvinyl alcohol system by a triacetyl cellulose film are butted and disposed in such a manner that the light absorption axes thereof intersect orthogonally with each other on the right and left and are inclined by 45 deg. with a horizontal direction. The laminated sheets 12 of the plastic obtd. by adhering and integrating the triacetyl cellulose films are blanked to the shape of the prescribed spectacles and are curved to obtain the polarizing spectacles for stereoscopic images. The spectacles formed to the prescribed shapes are easily obtd. by a blanking system, etc., since the laminated sheets of plastic are used. In addition, the permanent curves are easily imparted to the formed spectacles by a heating treatment, etc. The spectacles can be worn on faces which are different in sizes by the stress tending to restore the original curved state when the curves are flattened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to polarized glasses for stereoscopic imaging without ridges, in which a laminated plastic plate whose lens portion is formed of a polarizing plate is curved so as to be worn on the face.

Conventional Technology and Problems Conventionally, polarized glasses for stereoscopic images for viewing movies etc. in 3D have consisted of a lens section made of a polarizing plate, a support frame that supports the lens section, and a pair of cables attached to the left and right sides of the support frame. A structure consisting of is known. The manufacturing process begins with the production of components such as vines, and includes assembly steps such as attaching the vines to the support frame, and gluing the polarizing plate to the support frame so that the light absorption axes are in a predetermined relationship on the left and right sides. It is done after a while. Polarized glasses for stereoscopic imaging are often used disposablely, such as when watching movies (therefore, it is desirable that they be as easy to manufacture as possible while ensuring sufficient strength. It is also desirable that the same product can be applied to a wide range of people, from adults to children.

However, as mentioned above, the vine type polarized glasses have
There was a problem in that the labor required for manufacturing was generally large.

Additionally, there was a problem that there was a lack of flexibility in terms of the size of the face that can be worn, and it was necessary to prepare several sizes.

Means for Solving the Problems The present invention overcomes the above problems by bending laminated sheets of plastic.

That is, the present invention consists of a plastic laminated thin plate that is permanently deformed into a curved state so that it can be worn on the face by the pinching force caused by the stress when the curve is bent back into a flat direction, and at least the lens part is made of a polarizing plate. As well as being formed,
The present invention provides polarized glasses for stereoscopic images, characterized in that polarizing plates in left and right lens portions are arranged so that their light absorption axes intersect.

By using a laminated sheet of functional plastic, it is possible to easily obtain a predetermined shape by punching, etc., and it is also possible to easily impart permanent curvature to the shape by heat treatment, etc., and to convert that curvature into a plane. It can be attached to the face with the stress of trying to return to its original curved state.

Embodiment FIG. 1 shows an example of polarized glasses 1 for stereoscopic imaging using a plastic polarizing plate 11 only in the lens portion.
FIG. 2 shows an example of polarized glasses 2 for stereoscopic imaging, which are entirely formed of a plastic polarizing plate 11. 12 is a plastic film to which a plastic polarizing plate 11 is adhered.

The polarized glasses for stereoscopic imaging of the present invention are made of laminated thin plastic plates. That is, it consists of a plastic laminated thin plate as a polarizing plate formed by adhering and supporting a polarizing film with a plastic film, or a plastic laminated thin plate formed by partially adhering a plastic polarizing plate to a plastic film. In the latter case, the polarizing plate may consist of the polarizing film itself. Although not limited in the present invention, a laminated thin plate having a thickness of about 0.05 to 0.5 m is practically suitable. As a plastic film to adhesively support a polarizing plate, a film with excellent optical isotropy,
For example, unstretched films of cellulose, acrylic, polycarbonate, etc. are preferably used.

Polarized glasses are usually made of laminated thin plates with a length of 40 to 50 InI111.
It is formed by molding it into the shape of a piece of eyeglasses with a width of about 180 to 200 mm. The left and right polarizing plates in polarized glasses are arranged so that their light absorption axes (arrows) intersect. As a result, each polarizing plate predominantly transmits images for the right eye or left eye, thereby enabling stereoscopic viewing. From the viewpoint of visibility, the preferred arrangement is to have the light absorption axes of the polarizing plates orthogonal to each other for the images for the right eye and for the left eye, especially at an angle of 45 degrees with respect to the horizontal direction. It is preferable to arrange the light absorption axes so that they are orthogonal to each other at a corner. The above arrangement is applicable whether a polarizing plate is used only for the lens portion or when the entire lens portion is formed from a polarizing plate.

The polarized glasses for stereoscopic images of the present invention are made by permanently deforming a plastic laminated thin plate into a curved state. The permanent deformation imparted is a curved shape that generates stress that can pinch the face when bent back in the direction of flattening. The shape of the curve is determined as appropriate, and generally, as shown in FIG. 3, the entire body is uniformly curved, or as shown in FIG. The flat plate may have a curved shape, or a flat plate with only both ends curved. This curvature makes it possible to wear the glasses on the face as shown in FIG. 5, making it possible to obtain vineless glasses.

For example, giving a curved shape to a plastic laminated thin plate can be done by:
A method in which a polarizing plate formed into a prescribed eyeglass shape is wound around a core of a constant diameter and then heat treated, or a method in which a polarizing plate formed in a prescribed eyeglass shape is heated through a heating roll etc. and then wound around the core. etc. In addition, when forming the whole with a polarizing plate, the method of applying tension when sticking a polarizing film to a support film and curving a polarizing plate based on the internal distortion can also be used. In the case of the former core winding method, the appropriate diameter of the core used is 20 to 50 mm. Therefore, the polarized glasses of the present invention can also be configured in a rolled state based on curvature.

The polarized glasses for stereoscopic images of the present invention are useful for watching movies, etc., but they may also be put to practical use by applying appropriate printing or patterns to the surface of the polarizing plate or the like.

Example 1 Two polarizing plates made by adhering and supporting one side of a 30-thick iodine-polyvinyl alcohol polarizer with an 80-thick triacetylcellulose film were arranged so that their light absorption axes were mutually aligned on the left and right sides. After arranging the polarizers so that they are perpendicular to each other and at an angle of 45 degrees with respect to the horizontal direction, a plastic film obtained by adhering and integrating a triacetyl cellulose film with a thickness of 8h + a to the remaining one side of the polarizing plate in the arrangement. The laminated thin plate was punched into a predetermined shape of glasses, and the obtained molded product was wound around a core having a diameter of 35 mm, heat-treated at 80° C. for 1 minute, and bent to obtain polarized glasses for stereoscopic imaging.

I wore the obtained polarized glasses on my face and tried to walk normally, but they did not come off my face.

Example 2 An acrylic adhesive was coated on one side of a polarizing plate made by adhering a 50 μm thick triacetyl cellulose film to both sides of an iodine-polyvinyl alcohol polarizer with a thickness of 3 hIm, and light absorption from this was applied. A polarizing plate for the lens portion was punched out so that the axis was inclined at an angle of 45 degrees to the side. Then,
The punched pieces were attached to a triacetylcellulose film with a thickness of 188μI at a predetermined interval so that the light absorption axes of the left and right sides were perpendicular to each other at an angle of 45 degrees with respect to the horizontal direction. A glasses-shaped product was punched out from this product, wound around a core having a diameter of 35+a, heated at 80° C. for 1 minute, and bent to obtain polarized glasses for stereoscopic imaging 3 (FIG. 5).

I wore the obtained polarized glasses on my face and tried to walk normally, but they did not come off my face.

Effects of the Invention Since the polarized glasses for stereoscopic images of the present invention are obtained by curving laminated thin plastic plates, they can be efficiently manufactured with little labor. It is also lightweight and easy to wear, and has the advantage that the same product can be worn by a wide range of people with different facial sizes.

[Brief explanation of the drawing]

1 and 2 are front views showing an example of polarized glasses for stereoscopic images, FIGS. 3 and 4 are plan views showing an example of a curved state, and FIG.
The figure is an explanatory perspective view of the installed state. 1.2,3: Polarized glasses for stereoscopic imaging 11: Polarizing plate 12 Niblast film Arrow: Direction of light absorption axis of polarizing plate Patent issued Nitto Electric Industry Co., Ltd.

Claims (1)

[Claims] 1. It is made of a plastic laminated thin plate that is permanently deformed into a curved state so that it can be worn on the face by the pinching force caused by the stress when the curve is bent back in the direction of flattening, and at least the lens part is polarized. Polarized glasses for stereoscopic imaging are formed of a plate and are characterized in that polarizing plates in left and right lens parts are arranged so that their light absorption axes intersect. 2. Polarized glasses for stereoscopic imaging according to claim 1, wherein the light absorption axes of the polarizing plates forming the left and right lens portions are orthogonal to each other at an inclination angle of 45 degrees with respect to the horizontal direction.