JPS5687836A - Projection type lens meter - Google Patents
Projection type lens meterInfo
- Publication number
- JPS5687836A JPS5687836A JP16508679A JP16508679A JPS5687836A JP S5687836 A JPS5687836 A JP S5687836A JP 16508679 A JP16508679 A JP 16508679A JP 16508679 A JP16508679 A JP 16508679A JP S5687836 A JPS5687836 A JP S5687836A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- lens
- projection type
- target
- magnification
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0228—Testing optical properties by measuring refractive power
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Lenses (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16508679A JPS5687836A (en) | 1979-12-19 | 1979-12-19 | Projection type lens meter |
US06/214,624 US4564291A (en) | 1979-12-19 | 1980-12-10 | Projection type lensmeter |
DE19803047648 DE3047648A1 (de) | 1979-12-19 | 1980-12-17 | Projizierendes linsenmessinstrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16508679A JPS5687836A (en) | 1979-12-19 | 1979-12-19 | Projection type lens meter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5687836A true JPS5687836A (en) | 1981-07-16 |
JPS6249924B2 JPS6249924B2 (ja) | 1987-10-22 |
Family
ID=15805605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16508679A Granted JPS5687836A (en) | 1979-12-19 | 1979-12-19 | Projection type lens meter |
Country Status (3)
Country | Link |
---|---|
US (1) | US4564291A (ja) |
JP (1) | JPS5687836A (ja) |
DE (1) | DE3047648A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5331333A (en) * | 1988-12-08 | 1994-07-19 | Sharp Kabushiki Kaisha | Display apparatus |
US5100232A (en) * | 1990-11-05 | 1992-03-31 | American Optical Corporation | Apparatus and method for detecting hidden marks on progressive aspheric ophthalmic lenses |
US5396324A (en) * | 1991-11-30 | 1995-03-07 | Nidek Co., Ltd. | Lens meter for measuring a refractive power of a lens |
CA2113295A1 (en) * | 1994-01-12 | 1995-07-13 | Roger Dore | Lens markings viewer |
JPH10132707A (ja) * | 1996-09-05 | 1998-05-22 | Topcon Corp | 隠しマーク観察装置とレンズメータ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE861756C (de) * | 1946-05-16 | 1953-01-05 | Svenska Ackumulator Ab | Scheitelbrechwertmesser |
US2640392A (en) * | 1948-02-03 | 1953-06-02 | Freeman Hyman | Apparatus for measuring the focal length of lenses |
US3953130A (en) * | 1974-06-12 | 1976-04-27 | Kabushiki Kaisha Hoya Lens | Automatic digital indicating lens meter |
FR2356925A1 (fr) * | 1976-06-28 | 1978-01-27 | Essilor Int | Frontofocometre a projection pour mesurer notamment la puissance focale d'une lentille a tester |
US4090790A (en) * | 1976-07-08 | 1978-05-23 | American Optical Corporation | Apparatus for testing the refractive power(s) of lenses |
JPS5369058A (en) * | 1976-11-30 | 1978-06-20 | Hoya Lens Co Ltd | Lens meter |
JPS6212269Y2 (ja) * | 1977-12-26 | 1987-03-28 | ||
JPS55101840A (en) * | 1979-01-30 | 1980-08-04 | Tokyo Optical Co Ltd | Projection type lens meter |
-
1979
- 1979-12-19 JP JP16508679A patent/JPS5687836A/ja active Granted
-
1980
- 1980-12-10 US US06/214,624 patent/US4564291A/en not_active Expired - Lifetime
- 1980-12-17 DE DE19803047648 patent/DE3047648A1/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
JPS6249924B2 (ja) | 1987-10-22 |
US4564291A (en) | 1986-01-14 |
DE3047648A1 (de) | 1981-09-17 |
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