JPH04103114U - auto-dimming glasses - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] The present invention relates to auto-dimming glasses that can achieve an optimal anti-glare effect depending on the illuminance of the outside world, covering almost the entire visual field of the eyeglass user. The purpose is to [Structure] Lens parts 11 and 12 are formed by a collection of liquid crystal cells.
A pair of liquid crystal filters 13 and 14 that adjust the amount of light transmitted through the lens portion in accordance with a drive command, and detect the illuminance of light equivalent to the light incident on each liquid crystal cell of each liquid crystal filter. It is characterized by having an illuminance sensor 20 and a liquid crystal control circuit 16 that generates a drive command for each liquid crystal cell according to the detection output of the illuminance sensor.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to auto-dimming glasses, and is particularly suitable for use as an anti-glare device when driving a car etc. The present invention relates to auto-dimming glasses suitable for use in the field.

0002

[Conventional technology]

Sunglasses, sun visors, and top blur as anti-glare devices when driving a car It is known for its front glass and anti-glare rearview mirror. Of these devices, the battery As a mirror, the reflectance changes in stages according to the illuminance outside the vehicle. (For example, Nikkan Jidosha Shimbun, Thursday, May 10, 1990).

0003

[Problem that the idea aims to solve]

However, with conventional devices, it is not possible to adjust the amount of light in a part of the driver's field of vision. However, it is not possible to adjust the amount of light over almost the entire driver's field of vision according to the illuminance. Problems such as scratches and failure to fully demonstrate the anti-glare performance necessary for safe driving. There is.

0004 The purpose of this invention is to provide optimal protection according to the illuminance of the outside world over almost the entire field of view of the user. An object of the present invention is to provide automatic anti-glare glasses capable of exhibiting a dazzling effect.

[0005]

[Means to solve the problem]

This invention consists of a lens section made up of a group of liquid crystal cells, and the light that passes through the lens section. A pair of liquid crystal filters that adjust the transmission amount according to drive commands, and An illuminance sensor that detects the illuminance of light equivalent to the light that enters each liquid crystal cell, and an illuminance sensor It has a liquid crystal control circuit that generates drive commands for each liquid crystal cell according to the detection output of the It is characterized by

[0006] Another configuration of the present invention is that the liquid crystal control circuit controls the adjacent Includes an interpolation circuit that interpolates the intensity of light transmission between adjacent liquid crystal cells to a continuous value. It is characterized by

[0007]

[Effect]

The lens part consists of multiple liquid crystal cells, and the illuminance sensor detects the incident light on each liquid crystal cell. It is designed to detect the illuminance of light equivalent to the light emitted by the sensor. In other words, it constitutes an illuminance sensor. The optical axis of the optical sensor element is the solid angle of the eyeglass wearer's field of vision divided by the number of elements. are configured accordingly. For this reason, each liquid crystal cell is When a drive command is generated for the It is adjusted accordingly. Therefore, it is possible to target almost the entire visual field of the eyeglass wearer, depending on the illuminance of the outside world. This allows the optimum anti-glare effect to be achieved. Also, the transmission of light between adjacent liquid crystal cells Excessive shading is interpolated into continuous values depending on the illuminance, causing a sense of discomfort to eyeglass users. It is possible to adjust the amount of light transmitted through the entire lens portion without changing the amount of light.

[0008]

【Example】

Hereinafter, the present invention will be explained based on the drawings. FIG. 1 shows an embodiment of the present invention. The auto-dimming eyeglasses of the present invention have the overall shape of ordinary eyeglasses, and the eyeglass frames 10 Liquid crystal filters 13 and 14 are attached to the lens parts 11 and 12, respectively. A liquid crystal control circuit 16 is fixed to one side support part 15 of the eyeglass frame 10, and a liquid crystal control circuit 16 is fixed to one side support part 15 of the spectacle frame 10. A battery 18 is attached to the support portion 17 .

[0009] The connecting portion 19 is located between the lens portions 11 and 12. An illuminance sensor 20 is fixed to the connecting portion 19. The liquid crystal filters 13 and 14 have a light incident area divided into, for example, 16 areas, Each region is composed of a plurality of liquid crystal cells 21 as shown in FIG. Each LCD The cell 21 is composed of square cells as dot-shaped liquid crystal electrodes, and each liquid crystal cell The cells 21 are arranged in a matrix. Furthermore, each liquid crystal cell 21 has a liquid crystal control circuit. It is configured to adjust the amount of light transmission according to the drive command from 16.

0010 The illuminance sensor 20 includes, for example, 16 optical sensor elements, as shown in FIGS. 3 and 4. of light equivalent to the light incident on each liquid crystal filter 13, 14. The device is configured to detect illuminance. That is, each optical sensor element of the illuminance sensor 20 The optical axis 23 of 22 is the solid angle of the visual field of the eyeglass wearer's binoculars divided by the number of elements. It is configured accordingly. Then, the output signal of each optical sensor element 22 is transmitted to the liquid crystal control circuit. 16.

[0011] The liquid crystal control circuit 16 includes a light sensor amplifier 24, an illuminance contour interpolation circuit 25, and a light transmission amount. It is composed of an interpolation circuit 26, a liquid crystal control circuit 28, and a liquid crystal drive circuit 29. The output signal of the illuminance sensor 20 is supplied to the sensor amplifier 24, and the output signal of the liquid crystal drive circuit 29 is The signals are supplied to liquid crystal filters 13 and 14. And each part has 18 batteries. DC power is supplied from the

0012 The optical sensor amplifier 24 amplifies the output signal of each optical sensor element 22 and outputs the amplified signal. is output to the interpolation circuit 27. The signal input to the interpolation circuit 27 is transmitted to each liquid crystal filter. Interpolation processing to make the illuminance and light transmission amount of each area of 13 and 14 continuous values. The process will be carried out. This interpolated signal is sent to the liquid crystal drive circuit 2 via the liquid crystal control circuit 28. 9. Then, the liquid crystal cell 2 is driven by a drive command from the liquid crystal drive circuit 29. 1 is driven, and the amount of light transmitted through each liquid crystal cell 21 is adjusted. That is, liquid The amount of transmission of the liquid crystal cell 21 in the area of the crystal filters 13 and 14 where a large amount of light enters is reduced. This reduces the amount of light transmitted throughout the field of view and reduces visibility. I'm trying to prevent it.

[0013] In this way, according to this embodiment, the external world can be detected over almost the entire visual field of the eyeglass wearer. The optimal anti-glare effect can be obtained depending on the illuminance, making it easy for vehicle drivers to use these glasses. In this case, it can contribute to safe driving. Also, the glasses in this example can be attached to other glasses (glasses that are normally worn). In this case, as shown in FIGS. 6 and 7, the upper and lower parts of the liquid crystal filters 13 and 14 A hook 30 is fixed to the part, and the liquid crystal filters 13 and 14 are connected with a support plate 31. The illuminance sensor 20 is fixed to the holding plate 31, and each hook 30 can be attached to other glasses. can. In this case, the integrated control circuit 16 and battery 18 may be used as a frame for eyeglasses. By attaching the liquid crystal filters 13 and 14 to can be adjusted.

[0014]

[Effect of the idea]

As explained above, the present invention targets almost the entire visual field of the eyeglass wearer and uses external illumination to Optimal anti-glare effects can be obtained depending on the degree of exposure. In addition, the adjacent phase of the liquid crystal filter Interpolation processing is performed so that the shading of the liquid crystal cell is continuous, so it does not make glasses users feel uncomfortable. I have nothing to give.

[Brief explanation of drawings]

FIG. 1 is a perspective view of auto-dimming glasses.

FIG. 2 is an enlarged front view of a liquid crystal filter.

FIG. 3 is an enlarged front view of the illuminance sensor.

FIG. 4 is an enlarged side sectional view of the illuminance sensor.

FIG. 5 is a configuration explanatory diagram of a liquid crystal control circuit.

FIG. 6 is a configuration diagram showing another embodiment of the present invention.

FIG. 7 is a perspective view of an integrated battery and liquid crystal control circuit.

[Explanation of symbols]

10 Eyeglass frames 11, 12 Lens section 13,14 Liquid crystal filter 16 Liquid crystal control circuit 20 Illuminance sensor

Claims (2)

[Scope of utility model registration request] 1. A lens section is configured by a group of liquid crystal cells, a pair of liquid crystal filters that adjust the amount of light transmitted through the lens section according to a drive command, and a pair of liquid crystal filters that are incident on each liquid crystal cell of each liquid crystal filter. Automatic anti-glare glasses characterized by having an illuminance sensor that detects the illuminance of light equivalent to light, and a liquid crystal control circuit that generates a drive command for each liquid crystal cell according to the detection output of the illuminance sensor. 2. The automatic dimming device according to claim 1, wherein the liquid crystal control circuit includes an interpolation circuit that interpolates the intensity of light transmission between adjacent liquid crystal cells into continuous values according to the detection output of the illuminance sensor. glasses.