JPH03163413A - Electronic sunglasses - Google Patents

Abstract

PURPOSE:To eliminate the need for switching from the outside by using a solar battery as a power source and an optical sensor and providing an oscillation circuit which is operated by the brightness of incident light to change the color of a liquid crystal panel and a delay circuit which transmits a change in the brightness of the incident light by delaying the same. CONSTITUTION:The solar battery 1 acts as the optical sensor and is operated by the brightness of the incident light to generate a voltage which is sent through the delay circuit 2 to a voltage detecting IC 3. The oscillation circuit is turned on and a CC oscillation circuit 4 is operated by the IC 3 when the voltage exceeds a specified voltage. The color of the liquid crystal panel 5 is darkened by the operation of the CR oscillation circuit 4. The voltage is not sent to the voltage detecting IC 3 by the delay circuit 2 and the color of the liquid crystal does not change unless the regulated voltage is generated for a specified period of time. The voltage of the battery 1, conversely, drops and the CR oscillation circuit 4 stops when the incident light weakens. The liquid crystal panel darkened in color is restored to the original pale color by this stop. The liquid crystal is kept dark in color by the delay circuit 2 if the voltage below the specified value does not continue over the specified time at this time. This state is repeated and acts as sunglasses corresponding to brightness and darkness.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an oscillation circuit with a delay circuit for electronic sunglasses.

[Summary of the Invention] The present invention provides electronic sunglasses that utilize the characteristics of a liquid crystal panel, and uses an oscillation circuit that uses a solar cell as a light sensor and a delay circuit K that delays color changes due to the brightness of incident light to change color. It regulates change. [Conventional technology] Conventional electronic sunglasses use a switch attached to an oscillation circuit to oscillate and change the color of the liquid crystal when controlled from the outside, and use a solar cell as a light sensor to respond to changes in incident light. It reacted quickly and changed the color of the liquid crystal [Problem to be solved by the invention] However, in the prior art described above, the oscillation circuit could be controlled without pressing a switch regardless of the brightness of the incident light. , even when it suddenly gets dark, it stays dark, and even when it gets bright, it stays bright. Problem 51-j: A solar cell is used as a light sensor and has an oscillation circuit that quickly responds to the brightness of the incident light. The problem was that over time, flickering occurred. El! Means for Solving Problem II] The electronic sunglasses of the present invention are characterized in that a solar cell is used as a light sensor and a delay circuit is incorporated into an oscillation circuit that changes the color of a liquid crystal panel depending on the brightness of incident light. .

[Function] According to the IJiJ configuration of the present invention, the voltage of the solar cell increases due to the brightness of the incident light, the detection of the voltage is delayed by the delay circuit, the oscillation circuit is activated, and the voltage decreases during the delay. Embodiment FIG. 1 is a circuit diagram of electronic sunglasses according to an embodiment of the present invention.

The solar cell 1 acts as a light sensor and generates a voltage depending on the brightness of the incident light, which is sent to the voltage detector 03 through the delay circuit 2. When a certain voltage is exceeded by the voltage detector 03, the oscillation circuit is turned on and the OB oscillation circuit 4 is activated.

By operating the OR oscillation circuit 4, the liquid crystal panel 50
The color becomes darker. Also, if the specified voltage is to be generated for a certain period of time at that time, it is not sent to the voltage detection IO by the delay circuit 2,
Liquid crystals do not change color.

Conversely, when the incident light becomes dark, the voltage of the solar cell 1 becomes low and is sent to the voltage detector 03 through a delay circuit. When the voltage falls below a certain level due to the voltage detection device 05, the oscillation circuit turns O.
It enters the FF state and the OR oscillation circuit 4 stops. By stopping the OR oscillation circuit 4, the liquid crystal panel whose color has faded returns to its original pale color state. If the voltage remains below the specified value for a certain period of time, the delay circuit 2 does not send the voltage to the voltage detection IC, and the liquid crystal remains dark in color.

This state is repeated to create sunglasses that correspond to brightness and darkness.

FIG. 2 is a circuit diagram of a conventional electronic sunglasses.

Using the solar cell 1 as a power source, a voltage is generated depending on the brightness of the incident light, and when the voltage exceeds a certain voltage by the voltage detector 03, it is quickly detected (
It turns on, the oscillation circuit operates, and the color of the liquid crystal changes. Conversely, when the incident light becomes dark, the voltage from the solar cell decreases, the voltage detector 0 goes into the OFIF state, the oscillation circuit stops, and the color of the liquid crystal channel changes.

This circuit quickly responds to the brightness and darkness of the incident light.

[Effect of the invention] According to the present invention, a solar cell is used as a light sensor,
An oscillation circuit with a delay circuit prevents the color of the liquid crystal panel from changing due to the brightness of the incident light, eliminating the need for external switching. Since the flicker is 1/1, it is also effective in places with a large contrast ratio and when driving at high speeds.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of the electronic sunglasses of the present invention. Figure 2 is a circuit diagram of conventional electronic sunglasses...
...Solar cell...Delay circuit...Voltage detection IO ......OR oscillation circuit...・Liquid crystal

Claims (1)

[Claims] It uses a solar cell as a power source and a light sensor, and is characterized by having an oscillation circuit that operates depending on the brightness of incident light and changes the color of the liquid crystal panel, and a delay circuit that delays and transmits changes in the brightness of the incident light. electronic sunglasses.