Claims
- 1. Spectacle lens comprising:a region (distance portion) designed for viewing at large distances and in particular “to infinity”; a region (near portion) designed for viewing at short distances and in particular “reading distances”; and a progressive zone disposed between the distance portion and the near portion, in which a power of the spectacle lens increases from a value at a distance reference point located in the distance portion to a value at a near reference point located in the near portion along a curve (principal line) veering towards a nose; wherein, for minimizing a change of binocular imaging properties with horizontal movements of glance, a lift (difference between a maximum and a minimum value occurring during a movement) of binocular imaging properties when a moving object is being followed, is smaller than a physiologically pre-determined limiting amount, wherein a lift of binocular imaging properties that is smaller than a physiologically pre-determined limiting amount is computed for a movement for which intersection points of a principal ray with a plane z=−40 mm at a height of 10 mm are horizontal straight lines having a length of 20 mm.
- 2. Spectacle lens comprising:a region (distance portion) designed for viewing at large distances and in particular “to infinity”; a region (near portion) designed for viewing at short distances and in particular “reading distances”; and a progressive zone disposed between the distance portion and the near portion, in which a rower of the spectacle lens increases from a value at a distance reference point located in the distance portion to a value at a near reference point located in the near portion along a curve (principal line) veering towards a nose; wherein, for minimizing a chance of binocular imagine properties with horizontal movements of glance, a lift (difference between a maximum and a minimum value occurring during a movement) of binocular imaging properties when a moving object is being followed, is smaller than a physiologically pre-determined limiting amount, wherein an absolute value of a difference of minimum and maximum astigmatic difference, occurring during a movement, between a right-hand lens and a left-hand lens at corresponding see-through positions is everywhere less than 0.12 dpt.
- 3. Spectacle lens comprising:a region (distance portion) designed for viewing at large distances and in particular “to infinity”; a region (near portion) designed for viewing at short distances and in particular “reading distances”; and a progressive zone disposed between the distance portion and the near portion, in which a power of the spectacle lens increases from a value at a distance reference point located in the distance portion to a value at a near reference point located in the near portion along a curve (principal line) veering towards a nose; wherein, for minimizing a chance of binocular imaging properties with horizontal movements of glance, a lift (difference between a maximum and a minimum value occurring during a movement) of binocular imaging properties when a moving object is being followed, is smaller than a physiologically pre-determined limiting amount, wherein an absolute value of a difference of minimum and maximum mean powers, occurring during a movement, between a right-hand and a left-hand lens at corresponding see-through positions is everywhere less than 0.06 dpt.
- 4. Spectacle lens comprising:a region (distance portion) designed for viewing at large distances and in particular “to infinity”; a region (near portion) designed for viewing at short distances and in particular “reading distances”; and a progressive zone disposed between the distance portion and the near portion, in which a power of the spectacle lens increases from a value at a distance reference point located in the distance portion to a value at a near reference point located in the near portion along a curve (principal line) veering towards a nose; wherein, for minimizing a change of binocular imaging properties with horizontal movements of glance, a lift (difference between a maximum and a minimum value occurring during a movement) of binocular imaging properties when a moving object is being followed, is smaller than a physiologically pre-determined limiting amount, wherein an absolute value of a difference of minimum and maximum vertical prismatic deviation, occurring during a movement, between a right-hand and a left-hand lens at corresponding see-through positions is everywhere less than 0.05 cm/m.
- 5. Spectacle lens comprising:a region (distance portion) designed for viewing at large distances and in particular “to infinity”; a region (near portion) designed for viewing at short distances and in particular “reading distances”; and a progressive zone disposed between the distance portion and the near portion, in which a power of the spectacle lens increases from a value at a distance reference point located in the distance portion to a value at a near reference point located in the near portion along a curve (principal line) veering towards a nose; wherein, for minimizing a change of binocular imaging properties with horizontal movements of glance, a lift (difference between a maximum and a minimum value occurring during a movement) of binocular imaging properties when a moving object is being followed, is smaller than a physiologically pre-determined limiting amount, wherein an absolute value of a difference of minimum and maximum vertical prismatic deviation, occurring during a movement, between a right-hand and a left-hand lens at corresponding see-through positions for x coordinates between −10 mm and 10 mm is less than 0.02 cm/m.
Priority Claims (1)
Number |
Date |
Country |
Kind |
100 20 717 |
Apr 2000 |
DE |
|
CROSS REFERENCE TO RELATED APPLICATIONS
The present application is a continuation of international patent application no. PCT/DE01/01592, filed Apr. 27, 2001, designating the United States of America, the entire disclosure of which is incorporated herein by reference. Priority is claimed based on German patent application no. 100 20 717.0, filed Apr. 27, 2000.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4606622 |
Fuëter et al. |
Aug 1986 |
A |
5557348 |
Umeda et al. |
Sep 1996 |
A |
Foreign Referenced Citations (1)
Number |
Date |
Country |
0994375 |
Apr 2000 |
EP |
Continuations (1)
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Number |
Date |
Country |
Parent |
PCT/DE01/01592 |
Apr 2001 |
US |
Child |
10/281275 |
|
US |