KR19980082667A - Miniature Optical Display Device Using Cellophane - Google Patents

Abstract

The present invention relates to an ultra-compact optical display device using a cellophane, comprising an LED array unit consisting of an LED array, a driving motor, and a cell width lens, a convex lens, and a cellophane, and expanding and convex an optical signal scanned from the LED array to a convex lens. It is possible to realize accurate magnification while reducing the optical distance from the lens by the cell width lens. The LED array and the cell width lens are paired together to quickly reciprocate left and right by the driving motor to form an optical signal enlarged through the lens on the cellophane.

Description

Miniature Optical Display Device Using Cellophane

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to microscopic optical display devices, and more particularly, to size reduction of microscopic optical display devices using cellophane.

Conventional display devices change the optical path of a light signal scanned from an array of light emitting diodes (LEDs) through a first mirror and implement an enlarged lens in order to realize a virtual image. Through to a suitable magnification. The enlarged linear image is implemented as one surface by the vibrating second mirror.

1 is an overall schematic diagram of a microscopic optical display device by a conventional apparatus. As shown in FIG. 1, the display method emits light from the LED array 1, and the emitted light is reflected from the first mirror 3 via the first lens 2. The light magnified by the second lens 4 forms an image on the second mirror diaphragm 5 to view information through the window 7. At this time, the vibration of the second mirror 5 is possible due to the vibration of the driving motor 6, the driving motor 6 is controlled so that the same signal is always implemented in the same place in accordance with the optical signal of the LED array (1).

Such a conventional device requires a certain distance between the LED and the magnifying lens to secure the optical path, and the size of the screen that is visible to the human eye is limited. The size is bound to grow. In addition, in order to vibrate the second mirror having a large area, a driving motor and a counter balance mass thereof may also be large, and thus, it is difficult to integrate into a small mobile communication terminal or game machine.

In addition, in the conventional display device, a linear optical signal of an LED array fixed to a mounting base is magnified through a magnification lens which is also fixed, and implemented as one surface through a vibrating mirror. However, this conventional method is limited to the size of the screen that is visible to the human eye, the mirror size is inevitably large.

Therefore, the conventional display device is complicated in structure, large in size and heavy, making it difficult to mount and use in a personal mobile phone terminal or other small display device.

An object of the present invention for solving the above problems is to use a cellophane having a transmittance and reflectance, so that it is not necessary to secure the optical distance and to design the vibration structure of the mirror, so as to reduce the size of the entire display device personal mobile communication terminal or game machine It is in the back graft.

1 is an overall schematic diagram of a microscopic optical display device according to the prior art;

2 is an overall schematic view of a microscopic optical display device according to the present invention;

Figure 3 is a specific schematic view of the LED array unit according to the present invention.

* Explanation of symbols for main parts of drawings *

10: driving motor 20: LED array

30: selfoc lens 40: convex lens

50: cellophane

In order to achieve the above object, an ultra-small optical display device using a cellophane of the present invention includes an LED array unit including an LED array, a driving motor, and a selfoc lens to compose a screen by uniformly scanning light; A lens for enlarging the optical signal scanned by the LED array unit at an appropriate magnification; It is characterized by consisting of cellophane forming an image.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 2 is an overall schematic diagram of a microscopic optical display device according to the present invention.

As shown in FIG. 2, the optical signal scanned by the LED array unit 10-30 is determined to have an appropriate focal length through the convex lens 40 in consideration of the resolution and size of the screen and the size of the entire display device. It forms on the cellophane 50. The cellophane 50 should have a suitable transmittance and reflectance because the person sees from the outside of the cellophane 50, and also serves as a case. Therefore, the size of the cellophane determines the size of the screen, but since this can be a big factor that can influence the size of the entire display device, the scanning angle of the LED array, the optical distance of the lens, the resolution of the screen, and the like are sufficiently determined.

3 is a detailed schematic view of the LED array unit according to the present invention. As shown in FIG. 3, the LED array unit 10-30 has an optical signal scanned from the LED array 20 composed of numerous semiconductor LEDs and has a uniform focus through the cell width lens 30. The LED array 20 and the cell width lens 30 are thus paired and aligned neatly. This scans the optical signal by exactly matching the change period of the optical signal of the LED array 20 while reciprocating left and right by the driving motor 10. Therefore, one line of the LED array 20 forms one surface through the reciprocating motion of the driving motor 10.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be apparent to those who have knowledge.

Using a pair of cell-width lenses in front of the LED array, and using cellophane with transmittance and reflectance, the desired magnification can be achieved while reducing the optical distance considerably, which makes it possible to manufacture a display device of extremely small size. .

Claims (3)

An LED array unit which composes a screen by uniformly scanning an optical signal; A convex lens for enlarging the optical signal scanned by the LED array unit at an appropriate magnification; An ultra-small optical display device using a cellophane, characterized in that consisting of a cellophane to form an image of the optical signal scanned through the convex lens. The method of claim 1, The LED array unit, An LED array for scanning an optical signal; A cell width lens for uniformly focusing the optical signal scanned from the LED array; Small optical display device using a cellophane, characterized in that consisting of a drive motor to form a screen by vibrating the LED array from side to side. The method of claim 2, The LED array and the cell width lens, An ultra-compact optical display device using a cellophane, characterized in that paired and configured to reciprocate from side to side by the drive motor.