JPS5880624A - External light adjusting device - Google Patents

Abstract

PURPOSE:To make the outside visual field and display devices in the inside visible from the operator easy to see by providing modulators of which the transmittivity of light vary with electric signals and external light detectors between the operator and the outside field and keeping the brightness in the outside field at the value lower than a specified value. CONSTITUTION:This invention relates to an external light adjusting device for the system in which the operator 1 observes the outside field and display instruments 3 in the inside visually and nearly simultaneously through transparent glass 5, which device consists of modulators (electrochromic elements) 8 for varying of light transmittivity provided on the surface of said glass, detectors 6 for detecting the intensity of external light 2 transmitting through the modulators 8, external light adjusters 9 for setting the intensity of external light, and modulating signal generators 7 for changing the light transmittivity of the modulators by the output signals of the above-described photodetectors and external light adjusters. A feedback amplifier is constituted in order to allow the output voltage values of the detectors 6 to follow up the output voltage values of the adjusters 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an external light adjustment device for a system in which an operator such as an aircraft pilot or a car driver visually observes the external and internal indicators through a transparent glass. Specifically, the present invention relates to an outside light adjustment device that reduces the intensity of outside light entering a room to a certain value or less in order to make it easier to see displays or the outside world.

In order to simplify the explanation, the cockbit of a conventional fighter jet will be explained here as an example.

Figure 1 shows the cockbit of a fighter jet in flight.
3) is a display, (4) is a signal light, and (5) is a windshield. Operator +1) operates while looking at the display (3) and the outside world, but if it is sunny all day long, the strong outside light (2) will mainly come from the front and overhead.

In order to see the signal light (4) of the display, the display (3) needed to have high brightness and anti-reflection measures.

Additionally, in such cases, operators usually use sun visors or sump screens to view the outside world in order to prevent eye fatigue, but there is a disadvantage in that it becomes even more difficult to see the displays inside the aircraft.

Therefore, in the present invention, the conventional drawbacks are eliminated by controlling the intensity of external light entering the room using a modulator whose light transmittance changes according to an electric signal and an external light detector.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings in the case of a fighter aircraft. FIG. 2 is a diagram using the external light adjustment device according to the present invention, in which (6) is an external light detector for detecting the intensity of external light indoors, and (71 is for driving a modulator (8). The modulation signal generator 19) is an external light adjuster for varying the intensity level of external light incident into the controlled room, and the external light adjusting device is composed of the above-mentioned components 1B+ to (91). It is the same as in Figure 1. Now, the modulator (8) is an element (such as an electrochromic element) whose light transmittance changes depending on the electrical signal applied to it, and when there is no signal, it is equivalent to ordinary transparent glass. It is something that has properties.

The intensity of incident external light is changed between the modulation signal generators by applying their output electrical signals to the modulator (8), and the output voltage value of the external light detector (6) installed indoors is used to adjust the external light. A feedback amplifier is configured to follow the output voltage value of the device (9).

Therefore, even if the intensity of external light (2) fluctuates, the modulator (8)
The intensity after passing through is controlled so as not to exceed the value set by the external light regulator (9). This makes it possible to manually or automatically suppress strong external light, which has traditionally been a hindrance, to below a certain value, making it easier to see indoor displays and the outside world seen from inside the room.

Note that FIG. 2 shows a case where external light is controlled separately for upward and forward directions.

It goes without saying that the same holds true when controlling only in a single direction or in more directions. It goes without saying that the same holds true when using a plurality of external light detectors installed in different directions with respect to one modulator.

FIG. 3 is a diagram showing another embodiment of the invention.

A modulator (8) is attached to the windshield of the car. Bright outside light from the ground or the sky during sunny days (2
) can be adjusted to a brightness that allows comfortable viewing using the external light adjuster (9).

It goes without saying that the same applies to the window glass in the cockpit of ships.

In the above explanation, the case where the modulator is attached to the inside of a non-transparent inner wall plate has been explained.

Needless to say, this holds true when the modulator is installed outside the shield plate, and it goes without saying that the same holds true when the modulator is installed separately from the shield plate, and when the modulator itself is used as a shield plate.

As described above, the present invention provides a modulator that can vary the transmittance between the operator and the outside world, and manually or automatically controls the brightness of the outside world seen by the operator to below a certain value. This has the effect of making it easier to see the external field of view and the internal display visible to the operator.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a conventional fighter jet cockpit, FIG. 2 is a schematic configuration diagram showing one embodiment of the present invention, and FIG. 3 is a schematic configuration diagram showing another embodiment of the present invention. . In the figure, Ill is the operator, (2) is the outside light, and I3) is the display. (4) is a signal light, (5) is a windshield, (6) is an external light detector,
+71 is a modulation signal generator, (8) is a modulator, and (9) is an external light adjuster. ai is the windshield. Note that the same or corresponding parts in the figures are designated by the same reference numerals. Agent Shin Kuzuno - Figure 1 Figure 2

Claims (1)

[Claims] In an external light adjustment device for a system for visually observing the outside world and a display device provided inside the glass through a transparent glass, a modulator for variable light transmittance provided on the surface of the glass; A photodetector that detects the intensity of external light that passes through the modulator, an external light adjuster that sets the intensity of the external light, and a light transmittance of the modulator that is determined by the output signals of the photodetector and the external light adjuster. an external light adjusting device, comprising: a modulation signal generator for changing the intensity of external light;