JP2007133393A - Bifocal eyeglasses using liquid crystal device or eyeglasses for far-sighted, eyeglasses for near-sighted - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide eyeglasses lenses for far-sighted and near-sighted separation type or varilux type eyeglasses without a sense of incompatibility in terms of boundary by avoiding the narrowness of a visual field, while keeping 100% of the visual field of the lens in terms of far-sighted and near-sighted lenses. <P>SOLUTION: A liquid crystal lens is used as U1 and U2, the power of each lens is switched electrically or automatically, consequently, the wearer of the eyeglasses can preset the power of each lens by operating V1 and V2 according to the wearer being far-sighted or near-sighted. The power of each lens can be switched automatically, corresponding to the tilt angle in synchronization with the movement of the eyeballs of the eyeglasses wearer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The proportion of people wearing glasses in the world is extremely high. In particular, people after the elderly are difficult to see from both far and near, and every day they feel the hassle of switching to different glasses.
In recent years, perspective glasses for both perspective and bi-relaxed glasses have been introduced and improved. I can say that.
The near / far bifocal glasses of the present invention adopt a liquid crystal device liquid crystal lens, and the glasses wearer himself without feeling uncomfortable according to the movement of the eyeball wearer while keeping the lens field of view at 100% By automatically switching to the preset lens power in step 1, the purpose is to secure a very natural living environment that is free from changing glasses and discomfort with your own eyes. is there.

Technical information

・ NICT National Institute of Information and Communications Technology homepage
URL http: // www. nict. go. jp / index-J. html
・ Research and development of CRL NEWS (OCT No.28) liquid crystal lens
URL http: // www. nict. go. jp / publication / CRL News / 9910 / ekishuu. html
・ Basic knowledge of eyeglass lenses
URL http: // www. eyelove. co. jp

Wearing glasses is an annoying thing, but especially for people after the elderly, those after the elderly are difficult to see from both far and near, and it is every day while feeling the hassle of switching to each degree of glasses.
As in [0001], although the bifocal glasses have also been improved, the current situation is that the narrowness of the field of view in the near and far distance cannot fully accommodate the movement of the eyeball, and the user feels very uncomfortable.
In addition, the current situation is that if the eyesight changes year by year, it can only be dealt with by replacing the lens.

Even with perspective glasses that use perspective and separate glasses, the narrowness of the field of view cannot cope with the movement of the eyeball, and it often feels uncomfortable at the boundary of switching.
In the present invention, liquid crystal lenses are employed in U1 and U2 in FIGS. 1, 2, and 5, and the power of each lens is automatically and automatically switched while maintaining 100% of the lens field of view. It is intended to eliminate the narrowness of the field of view, and to eliminate the sense of incongruity at the border between the perspective and specular type eyeglass lenses.

  In addition to [0003], the wearer himself can preset the power of each lens according to V1, V2 in FIGS. 1, 2, 3, and 5 in accordance with the distance vision of the eyeglass wearer. This makes it unnecessary to purchase useless glasses every time.

  Another point to be solved by the present invention is that the eyeglass wearer's own eyeball movement is synchronized with the horizontal level meter of T shown in FIG. 3 in W of FIG. 1, FIG. 2, FIG. 3, and FIG. By moving the conductive liquid ball Z in FIG. 3 at an inclination angle, it is automatically switched to the power of each lens, so that it is freed from the discomfort of changing the glasses and the borders of the bifocal glasses. It is intended to ensure a very natural living environment.

The perspective or perspective glasses of the present invention employ a liquid crystal lens, and the conductive liquid bulb in the T part of FIG. 3 corresponding to the movement of the eyeglass wearer's eyeball while maintaining the field of view of each lens at 100%. It is automatically switched to the power of each lens by the movement of Z. That is, a detailed enlarged view of a T portion in FIG. 3, a movable resistance line that comes into contact with the conductive liquid ball Z on a cylindrical horizontal level meter that is slightly upward as shown in FIG. The normal conducting line 7 and the common line C are sealed, and it is normally considered that Z is naturally fixed in the hollow at the center of the cylinder due to the inclination of the letter C of the cylinder.
In the case of both near and near glasses, Z moves in the same manner according to the eyeball movement of the eyeglass wearer. The signal with variable resistance is 4 for C, and the normally energized signal is 5 for C. The lens power is automatically switched to the power of the lens based on the perspective information from the lead wire between C, and the semi-fixed power is set in place of the horizontal level meter T in the hyperopic myopia single glasses. It maintains 100% and ensures a very natural living environment without feeling uncomfortable.

In the case of bifocal glasses, the power of the lens is automatically switched to three types of modes by the energizing lines 6, 7 and C enclosed in T of FIG.
When the eyeglass wearer is in the front and upward state, that is, when there is a conductive liquid ball Z between the dent on the horizontal level meter 5 side and the dent on the center, the myopia mode is switched to the mode from the opposite front side to the 4th side. If it is on the indentation side, it is switched to the hyperopic mode.
In the latter case, the resistance value of 6 is variable depending on the gradient, and the lens power is gradually changed as if it were a 100% field-of-view lens of the ball relax lens according to the change in the resistance value. When entering the indentation, it is fixed to the hyperopic mode of the set frequency.

The power of the lens is electrically switched by the operations of T and Z in FIGS. 3 and 4, but the power of the lens is preset by wearing glasses by V1, V2 in FIGS. 1, 2, 3, and 5. Can be preset.
Therefore, the adoption of a liquid crystal lens that can always respond to changes in visual acuity is an epoch-making invention.

The development of liquid crystal optical device technology is dizzying, and it is widely used in various fields such as notebook computer displays, digital camera viewfinders, and optical camera lens electronic shutters.
This time, the liquid crystal lens adopted for the spectacle lens is already being used in telescopes and optical instruments, and should be used in the spectacles of the present invention, and will bring great gospel to future spectacle users. I believe that.

  Since the lens power is automatically switched according to the movement of the eyeball wearer's eyeball, S and W in each figure must be set on the arm portion of the glasses. Therefore, in terms of design, we considered that weight issues should also be implemented in view of the fact that the effects of the invention of the present glasses can be cleared by IC integration technology.

The invention's effect

The population of glasses in the world is very large. In particular, it is everyday that people after the old age are not able to see far and near, and feel the hassle of switching to glasses of their respective degrees.
As described in [0003] to [0008], the liquid crystal lens used in the near / far perspective glasses according to the present invention can be used by the eyeglass wearer himself / herself according to V1 and V2 in FIG. 1, FIG. 2, FIG. The power can be preset, and the liquid crystal lenses U1 and U2 can be automatically switched to the power of each lens according to the movement of the eyeball as shown in W of FIG. 5 and the electronic control circuit schematic diagram. We believe that it will bring the gospel widely and will bring a great revolution to the glasses industry.

  It is a general view of the structure of the near / far perspective glasses.   FIG. 1 is an overall view of the structure of glasses obtained by rotating [FIG. 1] 180 degrees.   This is a liquid crystal lens switching switch.   It is a detailed enlarged view of the horizontal level meter in [FIG. 3].   FIG. 3 is a schematic diagram of an electronic control circuit in FIG.

Explanation of symbols

1 (the same applies to FIG. 2)
1: Eyeglass right arm part 2: Lens holder part 3: Eyeglass left arm part S: Two button battery storage part U1: Right liquid crystal lens part U2: Left liquid crystal lens part V1: Focal length adjustment volume part for far vision V2: Myopia Focal length adjustment volume section W: Perspective switching control plate section P in FIG. 3 P: Control power supply T: Horizontal level meter section V1: Focal distance adjustment volume section for far vision V2: Focal length adjustment volume section for near vision W: Perspective switching control plate part X: Liquid crystal lens perspective drive adjustment amplifier Y: Liquid crystal lens focal length perspective switch Z: Conductive liquid ball part Reference numeral 4 in FIG. 4: Farsighted detection external lead part 5: Myopia detected external lead line Part 6: Variable resistance line part for hyperopia 7: Normal conducting line part for myopia 8: Common line part for each line of 6 and 7 C: Common lead line part for each line of 6 and 7 5: 1: Eyeglass right arm part 3: Glasses left arm part P: Control power supply part T: Horizontal level meter part U1: Right liquid crystal lens part U2: Left liquid crystal lens part V1: Focal length adjustment for hyperopia Volume section V2: Focal length adjustment volume section for myopia W: Perspective switching control board section X: Liquid crystal lens perspective drive adjustment amplifier section Y: Liquid crystal lens focal length perspective switch section

Claims (4)

  The structural structure body of each eyeglass that employs a liquid crystal lens of a liquid crystal device as a far-sighted, near-sighted, and perspective lens.   A technical technique in which the lens power switching method of the bifocal glasses detects the movement of the eyeball wearer's eyeball and automatically switches to the respective power.   The technical method in which each eyeglass wearer of [Claim 1] can arbitrarily adjust the power of each lens in accordance with his or her visual acuity.   The technical method for detecting the movement of the eyeball of the eyeglass wearer of [Claim 2].

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