JPS6010501A - Light controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention is directed toward improving light control bodies such as Fresnel lenses.

For example, spotlights used in television studios, theaters, etc. use a light control body as a focusing lens such as a Fresnel lens or a plano-convex lens.This type of light control body is generated from a rung. heat (=therefore the temperature is 2
Due to the high temperature of 00''C4 degree, it is generally made of glass.However, although glass has excellent heat resistance, mechanical strength, weather resistance, transparency, etc. However, when a clear outline of the spot is required, Fresnel lenses cannot be used, and plano-convex lenses that are polished after molding are used. , this requires a polishing process and is very (
It is difficult to handle as it is double-sided. For this reason, it has been proposed to use a heat-resistant synthetic resin such as polycarbonate, which has relatively good mechanical strength, excellent G-formability (for example, prisms), and good controllability of light. Has a heat resistance of 150”CS
It cannot withstand temperatures of 2K and cannot be used for spotlights, etc., which reach temperatures of about 2K (JO'C).

As mentioned above, heat resistance (two excellent, blue dense light:
! It was proposed to use silicone 4LrJ lii which has excellent moldability and achieves jlJ +4. However, silicone resins have disadvantages such as being flexible, having low mechanical strength, being easily deformed, and being unable to be used alone as a +UiJ light. For this reason, silicone 4. The JIJ optical book was proposed, in which a light control member made of resin was brought into contact with a glass substrate (2 contacts and 1 tube agent) to increase mechanical strength and prevent deformation.

However, this one is made of silicone resin.
The adhesive used to bond the J original member and the glass substrate generally has poor heat resistance, and if used in areas where the temperature exceeds approximately 2,000 ℃, the adhesive will deteriorate such as yellowing, and its transparency will deteriorate. There are inconveniences such as easy peeling.

[Purpose of Hikari 1 Town] The present invention was made in consideration of the above-mentioned circumstances.
= The objective is to provide a secondary light body that does not change, has excellent moldability of the light control part, and has high mechanical strength.

[Summary of the invention]

Next, the present invention will be explained in detail. It has been proposed that a light control member is molded from silicone resin, and this light control member is bonded to a glass substrate (with a second layer agent to increase mechanical strength), and some of these have been put into practical use.

However, a light control body constructed by bonding a light control member made of silicone resin and a glass substrate with an adhesive has the above-mentioned practical problems.

However, silicone resin is a material with excellent heat resistance (2) and excellent moldability of prisms on the light-stopping surface. The present invention is based on the knowledge that silicone resin can be fully utilized as a light control material for light-blocking materials.

The present invention focuses on the fact that there are silicone resins that exhibit self-adhesive properties (during curing) and solid materials (2) that exhibit good adhesive properties. It is formed in the light part and the peripheral edge of the other side (two peripheral walls are provided protrudingly).
An IFLJ optical member is formed, and self-adhesion is applied to at least the middle portion of the other side of the substrate, which is formed on the metal member of the FUL1 member and is made of a crow having a concave step into which the circumferential wall of the NFLJ optical member is fitted. It is characterized by forming a light control body.

According to □, there is no nib i'' between the secondary light member and the glass substrate, and when used at high temperatures (even on one occasion,
Transparency is not impaired, and since the bonding surface spans the 1+ij plane of the four steps, it is wide, hard to peel off, and mechanical strength can be significantly increased. moreover,
The substrate is easy to manufacture because it is only necessary to extend the periphery of one side of the plate-shaped body to form a recessed step.

In the present invention (2), the light control surface of the light control member may be configured in any shape, for example, it may be formed into a Fresnel lens surface consisting of a prism group, or a plano-convex lens surface (2). Furthermore, the light control member may be joined by self-adhering the intermediate portion and peripheral wall of the other side to the substrate (two self-adhering members).Furthermore, the light control member may be bonded by self-adhering the intermediate portion of the other side of the light control member to the substrate (
2, and the peripheral part is joined to the board with an annular frame (
You can do two.

[Embodiments of the invention]

Next, embodiments of the present invention will be described with reference to the drawings. 1
is a substrate, and this substrate l is made of a transparent glass plate, for example, 200 arms in diameter and 2 i in thickness.
This substrate 1 has a concave stepped portion 2 along the entire circumference (two) on one side, and a flat surface 3 (two formed) in the middle part. 4 is a light control member, and this light control member 4 is made of silicone resin having transparency, heat resistance, flexibility, and self-adhesiveness, and is formed into a plate shape. is formed by forming a light control surface 5 on one side and a peripheral wall 7 protruding therefrom.The other surface 6 is formed by at least the flat surface 3 of the substrate 1 (which is joined by self-adhesion). In this embodiment, the other surface 6 of the light control member 4 and the peripheral wall 7 are also self-adhered in the recessed step portion 2 and attached to the substrate 1 (
There are two junctions. This light control member 2 has a diameter of 200 mm, for example.
2 x m thick disk (2 formed, 1tt on the - side)
The lJ light surface 5 is formed by a concentric prism group 8 (2) and thus a Fresnel lens surface (2).The light control member 4 is bonded to the flat surface 3 and concave step 2 of the substrate 1 using silicone resin. When heat-cured at a temperature of about 100° C. (1) self-adhesive properties (2) bonding occurs, making bonding easy.

According to the embodiment (2) of the present invention explained above, since the light control layer 4 is formed of silicone resin, the properties of this resin such as transparency, heat resistance, and flexibility (1) are excellent, and the light control surface% The moldability of the prism (1) is excellent, so good light control properties are achieved.Furthermore, since the substrate (2) is self-contacted and bonded, there are no inclusions (2) between the light control member 4 and the substrate 1. Good transparency (1) is maintained, and (2) -II with a concave stepped surface
Ifi +- spans, it can be widened 9, Peeling (2 <<, Mechanical strength can also be improved.Furthermore, the substrate can be manufactured by simply cutting the periphery of one side of the plate to form a concave step. Furthermore, by forming the concave step portion on the substrate (1), the light control member made of silicone resin can cover the peripheral side of the substrate (2), so the light control member can be used as a light control member, for example, in a spotlight (2 Even if the spotlight vibrates when installed, the light control member acts as a cushion,
The generation of unpleasant sounds can be well prevented.

〔Effect of the invention〕

As detailed above (=, the present invention is characterized in that a light control member is formed of silicone resin, two peripheral walls are provided, and a concave step portion into which the peripheral wall of the light control member fits is formed on a glass substrate provided with two peripheral walls). Since the bond is self-adhesive at least at the middle part, it can be used at room temperature (- even if the transparency is not impaired).
, Peeling (2), Mechanical strength can be improved (2) Since the light control member is self-adhesive and bonded to the substrate, there is no need to apply adhesive, making it easy to manufacture. It can be provided at low cost.Furthermore, the substrate is easy to manufacture because it is only necessary to cut the periphery of one side of the plate-like body to form a recessed step.

[Brief explanation of drawings]

The drawings show an embodiment of the light control body of the present invention, with FIG. 1 being a front view and FIG. 2 being a sectional view. ■... Substrate 2... Concave stepped portion 3... Flat surface 4... Light control member 5... Light control portion 6... Ground 7... Peripheral wall Patent applicant Toshiba Tunzai Co., Ltd. Company agent Patent attorney Ono 1) Kosai Yoshi 1 Smart speaker Z Kuni

Claims (1)

[Claims] (1) A plate-shaped substrate made of transparent glass with a recessed step τ cut out on the periphery of one side, and a plate-shaped silicone resin substrate that has transparency, heat resistance, flexibility, and self-adhesiveness. A light control surface is formed on two sides having a similar shape, and a peripheral wall is provided projecting on the other side to fit into the recessed part of the first substrate, and at least a middle portion of the other side is self-contacted and bonded to the above substrate. Light control member and metal fittings 1iii -F! Sub-light body with f imitation. t21 The 1jfl optical surface of the 1611 original member is formed as a Fresnel lens surface (
1) Brother's secondary light body. (311jfl = e fσII jt, The secondary light body according to claim (1), wherein the light control surface of the member is a plano-convex lens surface (dish-shaped).