Unlock instant, AI-driven research and patent intelligence for your innovation.

Gel member for optical use, method for assembling optical device using same, and optical device

An optical device and assembly method technology, which is applied to optical components, optics, lighting devices, etc., can solve the problems of inoperable work, difficult operability, oil leakage, etc., and achieves reduction of light incident loss, cost reduction, and low power consumption. Effect

Inactive Publication Date: 2012-05-23
TAICA
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] That is, (2) when filling the gel, there is a difficulty in handling during assembly due to the gel flowing out; Oil seepage in jelly, etc.
For these problems, it is considered to use conventional optical adhesives, etc., but (4) there is a problem that reprocessing cannot be performed during assembly of optical members

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gel member for optical use, method for assembling optical device using same, and optical device
  • Gel member for optical use, method for assembling optical device using same, and optical device
  • Gel member for optical use, method for assembling optical device using same, and optical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0305] As a transparent gel for optical gel parts with a hardness of 60 penetration at the time of curing, an uncured raw material of a linear silicone gel (material A1) was filled in a mold and thermally cured at 80°C. A cylindrical rope-shaped gel part of about φ1.5 mm was produced.

[0306] Such as Figure 20 As shown in the structure shown in the above, the rope-shaped gel member made in this way was brought into contact with the side surface of the incident side of the acrylic plate using the light guide plate as a mold, and furthermore, the LED light-emitting surface and the rope were placed in such a way as to face the incident surface of the acrylic. The gel parts are laminated in contact with each other, and the distance between the incident surface of the acrylic and the light-emitting surface of the LED is 1mm. Figure 20 An undescribed jig fixed the LED and the light guide plate to obtain a test sample 1.

Embodiment 2

[0308] Using a nearly rectangular parallelepiped rope-shaped gel member with a cross-section of 1.5mm□, apply a transparent liquid epoxy resin (manufactured by Henkel, Stycast1264) on the LED light-emitting surface, and then cure it at 40°C to make the LED light-emitting surface convex. A test sample 2 was obtained in the same manner as in Example 1 except that the original light-emitting surface was used as a reference and the height to the convex top was 250 μm.

Embodiment 3

[0310] A test sample 3 was obtained in the same manner as in Example 1 except that material A2 whose gel hardness when the transparent gel of the optical gel member was cured was Asker C30 was used.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
penetrationaaaaaaaaaa
Login to View More

Abstract

Disclosed are: a gel member for optical use, which is used in the space between a light guide plate and a light-emitting diode that serves as a backlight light source of an optical device; a method for assembling an optical device using the gel member for optical use; and an optical device. Specifically disclosed is a gel member for optical use which is used by being interposed between a light guide plate and a light-emitting element that is composed of a light-emitting diode (LED) in an optical device. The gel member for optical use is characterized by satisfying the following conditions (i)-(iii). (i) The gel member for optical use is composed of a transparent gel such as a silicone gel or an acrylic gel, which has a JIS-A hardness of 0-80 in accordance with JIS K6253 or a penetration (at 25 DEG C) of 20-200 in accordance with JIS K2207. (ii) The gel member for optical use is in the form of a cord, and the peripheral surface of the cord-like gel member is brought into contact with the light guide plate and the light-emitting element. (iii) The gel member for optical use has a repulsion of not more than 12 MPa at a compression rate of 30%.

Description

technical field [0001] The present invention relates to an optical gel member, an assembly method of an optical device using the same, and an optical device. A gel member for optics, an assembly method of an optical device using the same, and an optical device. Background technique [0002] A light transmission technology that combines a light emitting element and a light guide plate that guides light from the light emitting element has been used in backlight light sources of liquid crystal display devices and lighting fixtures having light emitting units to which the backlight technology is applied. [0003] So far, cathode tubes have been used as backlight sources for liquid crystal display devices (hereinafter also referred to as LCDs) in medium to large screens such as televisions, personal computers, and car navigation systems, and light-emitting diodes (LEDs) have been used in small devices such as mobile phones and game machines. Hereinafter also referred to as LED)....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357F21S2/00G02B1/04F21Y101/02
CPCG02B6/0023G02B6/0068G02B6/0073G02B1/04Y10T428/2922Y10T428/2967Y10T428/2978Y10T428/2973C08L83/04
Inventor 樱井敬久白鸟祐一笹泽宣弘增田政彦
Owner TAICA