JPS5576902A - Method for measuring depth of concave face of soft contact lens - Google Patents
Method for measuring depth of concave face of soft contact lensInfo
- Publication number
- JPS5576902A JPS5576902A JP15141478A JP15141478A JPS5576902A JP S5576902 A JPS5576902 A JP S5576902A JP 15141478 A JP15141478 A JP 15141478A JP 15141478 A JP15141478 A JP 15141478A JP S5576902 A JPS5576902 A JP S5576902A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- concave face
- water
- face
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
- Eyeglasses (AREA)
Abstract
PURPOSE: To accurately and easily measure the depth of the concave face of a soft contact lens by a contact stylus while placing the concave face on the lower side of the lens under water, by keeping the top of the convex face of the lens out of the water.
CONSTITUTION: A container 1 is filled with water 2. A soft contact lens 3 is set in the center of the water 2 so that the concave face of the lens is located on its lower side and the top of the convex face of the lens remains over the water. A contact stylus 6 has a threaded part 7 and is moved up by rotating a knob 9. The moment the tip 5 of the contact stylus 6 comes into touch with the bottom 4 of the concave face the indicated value of graduations 8 is read to determine the depth d of the concave face. When the top of the convex face of the lens is in contact with the surface of the water, the lens is prevented from horizontally rocking. This results in accurately and easily measuring the depth of the concave face of the lens.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15141478A JPS5576902A (en) | 1978-12-07 | 1978-12-07 | Method for measuring depth of concave face of soft contact lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15141478A JPS5576902A (en) | 1978-12-07 | 1978-12-07 | Method for measuring depth of concave face of soft contact lens |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5576902A true JPS5576902A (en) | 1980-06-10 |
Family
ID=15518079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15141478A Pending JPS5576902A (en) | 1978-12-07 | 1978-12-07 | Method for measuring depth of concave face of soft contact lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5576902A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4023757A1 (en) * | 1989-07-28 | 1991-02-07 | Olympus Optical Co | SPHAEROMETER |
-
1978
- 1978-12-07 JP JP15141478A patent/JPS5576902A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4023757A1 (en) * | 1989-07-28 | 1991-02-07 | Olympus Optical Co | SPHAEROMETER |
US5131159A (en) * | 1989-07-28 | 1992-07-21 | Olympus Optical Company Limited | Spherometer |
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