Special lens and glasses equipped with the same

• US 4,818,095 A
• Filed: 06/19/1986
• Issued: 04/04/1989
• Est. Priority Date: 01/04/1984
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha ALPS
• Original Assignee: Kunio Takeuchi
• Inventors: Takeuchi, Kunio
• Primary Examiner(s): Corbin, John K.
• Assistant Examiner(s): Sugarman, Scott J.
• Application Number:
  US06/876,891
• Time in Patent Office: 1,020 Days
• Field of Search: 351/159, 351/163, 351/49, 350/399, 350/407
• US Class Current: 351/159
• CPC Class Codes: G02C 7/12 Polarisers

Abstract

The effect of the glasses of this invention is estimated and is summarized as follows:

(1) The effect of reducing the consciousness of eye fatigue is seen.

(2) There is a tendency that the mental subjective symptoms are reduced.

(3) Because the sense of fatigue is reduced, concentration becomes easier and it is presumed that it is helpful in preventing irritation and weariness.

Since fatigue differs depending on the length of working time, it seems to be necessary to take into consideration the effect due to other fatigue than eye fatigue and the effect of motivation. It seems also necessary to investigate under different conditions the latent fatigue which has not been covered in this report.

Claims

1. A special lens for glasses for a wearer, which lens has been formed by cementing a polarizer having an angle to a lens for glasses on the side of the lens opposite the eyeball of the wearer by a bonding agent, said polarizer angle being obtained by adding 90°

to an astigmatic angle of the eyeball when the astigmatic angle is in the range from 0°

to 90°

, which astigmatic angle is obtained by measuring and calculating the astigmatic angle of the eyeball of the wearer, and said polarizer angle being obtained by subtracting 90°

from the astigmatic angle when the astigmatic angle is in the range of more than 90°

to 180°

.

2. A special lens for glasses for a wearer, which lens has been formed by cementing a polarizer having an angle to a lens for glasses on the side of the lens at the eyeball of the wearer by a bonding agent, said polarizer angle being obtained by adding 90°

to an astigmatic angle of the eyeball when the astigmatic angle is in the range from 0°

to 90°

, which astigmatic angle is obtained by measuring and calculating the astigmatic angle of the eyeball of the wearer, and said polarizer angle being obtained by subtracting 90°

from the astigmatic angle when the astigmatic angle is in the range of more than 90°

to 180°

.

3. A special lens for glasses for a wearer, which lens has been formed by cementing a polarizer having an angle between a lens for glasses and another lens by a bonding agent, said polarizer angle being obtained by adding 90°

to an astigmatic angle of the eyeball when the astigmatic angle is in the range from 0°

to 90°

, which astigmatic angle is obtained by measuring and calculating the astigmatic angle of the eyeball of the wearer, and said polarizer angle being obtained by substracting 90°

from the astigmatic angle when the astigmatic angle is in the range of more than 90°

to 180°

.

4. A special lens for glasses for a wearer, which lens has been formed by incorporating and processing a polarizer having an angle to the inside of a lens for glasses, said polarizer angle being obtained by adding 90°

to an astigmatic angle of the eyeball when the astigmatic angle is in the range from 0°

to 90°

, which astigmatic angle is obtained by measuring and calculating the astigmatic angle of the eyeball of the wearer, and said polarizer angle being obtained by subtracting 90°

from the astigmatic angle when the astigmatic angle is in the range of more than 90°

to 180°

.

5. A special lens as defined by claim 4, wherein the upper portion of the lens is brighter than the lower portion thereof.

6. A pair of glasses for a wearer, including a special lens which has been formed by cementing a polarizer having an angle to a lens for glasses on the side of the lens opposite the eyeball of the wearer by a bonding agent, said polarizer angle being obtained by adding 90°

to an astigmatic angle of the eyeball when the astigmatic angle is in the range from 0°

to 90°

, which astigmatic angle is obtained by measuring and calculating the astigmatic angle of the eyeball of the wearer, and said polarizer angle being obtained by subtracting 90°

from the astigmatic angle when the astigmatic angle is in the range of more than 90°

to 180°

.

7. A pair of glasses for a wearer, including a special lens which has been formed by cementing a polarizer having an angle to a lens for glasses on the side of the lens at the eyeball of the wearer by a bonding agent, said polarizer angle being obtained by adding 90°

to an astigmatic angle of the eyeball when the astigmatic angle is in the range from 0°

to 90°

, which astigmatic angle is obtained by measuring and calculating the astigmatic angle of the eyeball of the wearer, and said polarizer angle being obtained by subtracting 90°

from the astigmatic angle when the astigmatic angle is in the range of more than 90°

to 180°

.

8. A pair of glasses for a wearer, including a special lens which has been formed by cementing a polarizer having an angle between a lens for glasses and another lens by a bonding agent, said polarizer angle being obtained by adding 90°

to an astigmatic angle of the eyeball when the astigmatic angle is in the range from 0°

to 90°

, which astigmatic angle is obtained by measuring and calculating the astigmatic angle of the eyeball of the wearer, and said polarizers angle being obtained by substracting 90°

from the astigmatic angle when the astigmatic angle is in the range of more than 90°

to 180°

.

9. A pair of glasses for a wearer, including a special lens which has been formed by incorporating and processing a polarizers having an angle to the inside of a lens for glasses, said polarizer angle being obtained by adding 90°

to an astigmatic angle of the eyeball when the astigmatic angle is in the range from 0°

to 90°

, which astigmatic angle is obtained by measuring and calculating the astigmatic angle of the eyeball of the wearer, and said polarizer angle being obtained by subtracting 90°

from the astigmatic angle when the astigmatic angle is in the range of more than 90°

to 180°

.