JPS5860727A - Holder for optical shutter element - Google Patents

Abstract

PURPOSE:To improve the producibility and to prevent the break of an optical shutter element, by holding the element among a solid-state plate having a stepped recess part and transparent members, which are arranged on both faces of the element, in a prescribed arrangement relation as one body and wiring and storing the element in the recess part of the solid-state plate. CONSTITUTION:A holder 10 consists of an insulating solid-state plate consisting of plastic or the like and a transparent member such as glass, acrylic resin and celluloid or the like, and two angular windows 1 where transparent plates having prescribed rectangular dimensions approximately equivalent to the range of the acting part of an optical shutter element at least are mounted as one body are arranged at a desired pitch interval, and the first-step rectangular recess part 2, the second-step round recess part 3, and the thrid-step rectangular recess part 4 are arranged successively with the same axis as angular windows on one principal plane. Thus, the structure is simple to improve the producibility, and the external force is prevented from being applied directly to the optical shutter element to prevent the break of the element.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a holder for an optical shutter element that utilizes the electro-optic effect.

Prior to explaining the present invention, the basic structure of an optical shutter element will be explained with reference to two conceptual diagrams. First, FIG. 1 shows a plan view and FIG. 2 shows a side view of an example in which a fixed element such as PLZT is used as an electro-optic effect element. A comb-shaped electrode 12 with a predetermined pattern is attached to the front and back surfaces of a transparent substrate, such as PLZTll, constituting an electro-optic effect element, and PLZTll has a first polarizing plate (
Pl) 13A and the second polarizing plate (P2) 13B are clamped in a horizontal strip shape. The relative polarization relationship between Pl and P2 is P1 above P2, that is, θ=90 degrees.

It is configured in a relationship of ψ=46 degrees.

Figures 3 and 4 show T N m as an electro-optic effect element.
This figure shows a plan view and a side view of a second example using an ode (twisted-nematic mode) liquid crystal.
In place of the pLZT 12 in the figure, a liquid crystal element 14 equipped with a patterned electrode 16 on the entire surface is used as the first. Second polarizing plate 16
It has a configuration in which A and 16B are clamped in a sandwich-like manner.

Hitherto, a holder that holds the above-mentioned electro-optic effect element and polarizing plate and also serves as a holder for arranging lead wires for feeding power to electrodes attached to the surface of the electro-optic effect element has not been proposed or put to practical use. It wasn't.

The present invention proposes an optical shutter element holder that satisfies the above object, and will be explained below with reference to the drawings using an example in which PLZT is mounted.

The cage 10 of the present invention is shown in a plan view in FIG. 5, a sectional view in FIG. 6, an exploded perspective view in FIG. 7, and a sectional view in FIG.
It is made of an insulating solid plate such as plastic, a transparent member such as a glass plate, acrylic resin, vinyl chloride resin, celluloid, etc., and has a predetermined rectangular size, that is, a size approximately at least the area of the active area of the optical shutter element. Square windows 1 integrally fitted with transparent plates are arranged at two locations at a desired pitch interval (in this case, the distance between the two human eyes), and one main plane has the same axis as the square window 1. 1st stage rectangular recess in the shape of a concentric ring 2. Second stage circular recess 3. Third
The rectangular recesses 4 of the tiers are arranged in a stepwise manner. (For convenience, the side closest to the corner window 1 is referred to as the first stage.) As shown in detail in FIGS. PLzT in the step circular recess 3
ll and a polarizing plate (P2) 13B, and the lid plate 8 can be stored and arranged in the third rectangular recess 4, and the inner dimensions of the recesses 2 and 3 of the first and second stages are the same as those of the respective parts. Parts to be loaded into (
The inner dimension of the third stage "restriction part 4" is smaller than the outer dimension of the cover plate 8 by a desired amount. Therefore, the cover plate 8 is attached to the space between the third stage in a lightly press-fitted state.

Furthermore, as is clear from the drawings, the above-mentioned stepped recess shape also serves the purpose of maintaining the desired relative positional relationship of the parts by stacking and loading the parts in the four parts of the cage 10 in the direction of the arrow. So, polarizing plate (P2) 13
By stacking BK and attaching the cover plate 8 in a light press-fit state, each component and the retainer 10 can be integrally fixed.

Further, on the stepped recess side of the cage 10, two circular recesses 5 are symmetrically arranged at desired positions including the stepped boundary between the second stage circular recess 3 and the third stage rectangular recess 4. ing. This circular recess 5 is provided for the purpose of allowing the main plane of the PLZT 11 to be loaded in close contact with the second stage space 3. The reason for this is that in order to make the front and back surfaces of the comb-shaped electrodes 12 arranged on the biplanar surfaces of the PLZT 11 conductive to each other, the PLZT
When a conductive material such as silver paste is applied to the main plane and side surfaces of the PLZT, protrusions of the silver paste may occur on the main plane and side surfaces of the PLZT, although the dimensions are minute.
The purpose of this is to prevent the PI and ZT from floating or shaking when the PI and ZT are loaded into the space between the second stage.

Furthermore, four power supply lead wires 19 are embedded in the holder 10 at predetermined positions connected to the four stepped portions described above, which are connected to predetermined electrode portions of the PLZT 11 with conductive adhesive such as solder or silver paste. The four portions 6 are also arranged symmetrically, and the recess depths of the recess 6 and the third stage space 4 are configured to be the same.

The cover plate 8 has a corner window 9 having approximately the same dimensions as the corner window 1 provided in the cage 10, and the corner window 9 is also integrally made of a glass plate, a transparent plastic member, etc., as in the case of the cage 1Q. The desk is fitted.

Note that the transparent members attached to the square windows 1 and 9 are integrally fixed by means such as adhesive or ultrasonic welding, or are constructed in the same process by means such as two-color molding. In addition to the square window 9, the cover plate 8 has a recess 2o of a desired shape, which is necessary for accommodating and embedding two power supply lead wires 19 attached to the comb-shaped electrodes 12 of the PLZT 11, on one main plane, and is also approximately symmetrical. It is located in

As shown in the front view in FIG. 9 and the left side view in FIG. 10, the outer shape of the cover plate 8 has a predetermined shape that corresponds to both the rectangular four parts 4 of the third stage and the power supply lead wire embedding recess 6. It is what you do. That is, by attaching the cover plate 8 to the recesses 4 and 6, the rear surface of the optical shutter element is pressed to a predetermined position, and the power supply lead wire 19 is pressed by the protrusion 8A and buried in the recess 6. .

In addition, when the optical shutter elements are arranged in two places in a spectacle-like manner as shown in FIG. 5, the protrusion directions of the protrusions 8A formed on the cover plate 8 are made symmetrical. Therefore, PLZT 11
Two power supply lead wires 19 are connected to each of the four parts 6 on the left and right after passing through the upper recess of the third stage, and then the two lead wires 19 are connected to the lid plate 8. By attaching it in a light press-fit state, it is buried in a state where it is not exposed to the main plane of the retainer 1o. The other end of the lead wire 19 (P
The side (not connected to the LZT) is led out from a predetermined gap (not shown) provided between the tip of the protrusion 8A of the cover plate and the fourth part 6, and is connected to a power supply device (not shown) for driving the optical shutter element. connected to.

As described above, the optical shutter element holder of the present invention integrally and reliably holds the optical shutter element in a predetermined arrangement relationship between the solid plate having the stepped recess and the transparent members arranged on both sides of the optical shutter element. , the power supply lead wire is neatly routed inside the recess of the solid board.

It is designed to be stored, and has a simple structure, good productivity, and a small mounting shape. In addition, transparent members placed on both sides of the optical shutter element prevent external forces from being applied directly to the optical shutter element. However, it has many effects such as preventing damage to the optical shutter element.

The cage, cover plate, etc. described above can be efficiently manufactured into two desired shapes and dimensions by molding resin materials such as polycarbonate, polymer, acetyloid, etc., and are not limited to the shapes of the above embodiments. It goes without saying that this may be carried out arbitrarily.

Similarly, the means for fixing the cover plate attached to the retainer is not limited to the light press-fitting method, and may be implemented by any means such as adhesive or ultrasonic welding.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a schematic configuration of an optical shutter element used in an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, and FIG. 3 is another optical shutter used to explain the present invention. FIG. 4 is a side view of FIG. 3, FIG. 5 is a plan view of an optical shutter element holder according to an embodiment of the present invention, and FIG. 6 is a cross-sectional view of FIG. FIG. 7 is an exploded perspective view showing the order in which the optical shutter element is attached to the holder of the present invention, and FIG. 8 is a cross-sectional view taken at section 8'. , s − in FIG.
9 is a front view of an example of the lid plate used in the present invention, and FIG. 1o is a left side view of FIG. 9. 1.9... Corner window, 2... 1st stage rotation section, 3... 2nd stage space, 4... 3rd stage Automatic rotation part, 5...Circular concave part, 6!2o...
- Concave part - 8... Difference plate - 10... Cage - 11... PLZTl 2, ...,, comb-shaped electrode, 13A, 13B, 1 eA. 16B, Polarizing plate, 14, Liquid crystal element, 19...Power supply lead wire. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 8
Figure 9 Figure 10

Claims (1)

[Claims] The optical shutter is made of an insulating solid material, and is connected to a stepped recess in which the optical shutter element is housed, and is provided with a lead wire embedding groove for supplying power to the optical shutter element, and further includes an optical shutter housed in the stepped recess. An optical shutter element, characterized in that a cover plate is attached to the back surface of the element, and at least one of the members that abuts both surfaces of the optical shutter element is made of a transparent member in the area range of the optical shutter element action part. retainer.