JPS6139048B2 - - Google Patents
Info
- Publication number
- JPS6139048B2 JPS6139048B2 JP51067521A JP6752176A JPS6139048B2 JP S6139048 B2 JPS6139048 B2 JP S6139048B2 JP 51067521 A JP51067521 A JP 51067521A JP 6752176 A JP6752176 A JP 6752176A JP S6139048 B2 JPS6139048 B2 JP S6139048B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- eye
- examined
- concave
- objective lens
- 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.)
- Expired
Links
- 238000005286 illumination Methods 0.000 claims description 13
- 230000005499 meniscus Effects 0.000 claims description 11
- 206010064127 Solar lentigo Diseases 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 206010027146 Melanoderma Diseases 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000001747 pupil Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/13—Ophthalmic microscopes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eye Examination Apparatus (AREA)
- Lenses (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6752176A JPS52150645A (en) | 1976-06-09 | 1976-06-09 | Objective lens for opthalmology |
US05/802,877 US4162827A (en) | 1976-06-09 | 1977-06-02 | Wide angle objective for ophthalmoscopic instrument |
DE2725990A DE2725990C2 (de) | 1976-06-09 | 1977-06-08 | Ophthalmoskopisches Gerät |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6752176A JPS52150645A (en) | 1976-06-09 | 1976-06-09 | Objective lens for opthalmology |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS52150645A JPS52150645A (en) | 1977-12-14 |
JPS6139048B2 true JPS6139048B2 ( ) | 1986-09-02 |
Family
ID=13347354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6752176A Granted JPS52150645A (en) | 1976-06-09 | 1976-06-09 | Objective lens for opthalmology |
Country Status (3)
Country | Link |
---|---|
US (1) | US4162827A ( ) |
JP (1) | JPS52150645A ( ) |
DE (1) | DE2725990C2 ( ) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6449126U ( ) * | 1987-09-22 | 1989-03-27 | ||
JPH01112721U ( ) * | 1988-01-22 | 1989-07-28 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5691729A (en) | 1979-12-25 | 1981-07-24 | Nippon Chemical Ind | Optical system for examinating and photographing eyeground |
JPS58195816A (ja) * | 1982-05-11 | 1983-11-15 | Tokyo Optical Co Ltd | 眼底カメラ |
US4738521A (en) * | 1982-10-28 | 1988-04-19 | David Volk | Lens for indirect ophthalmoscopy |
JPH04317627A (ja) * | 1991-04-16 | 1992-11-09 | Canon Inc | 眼底カメラ |
CA2352148C (en) | 1998-11-24 | 2008-01-15 | Welch Allyn, Inc. | Eye viewing device for retinal viewing through undilated pupil |
US6637882B1 (en) | 1998-11-24 | 2003-10-28 | Welch Allyn, Inc. | Eye viewing device for retinal viewing through undilated pupil |
WO2001071410A2 (en) * | 2000-03-17 | 2001-09-27 | Zograph, Llc | High acuity lens system |
AU2004287478A1 (en) | 2003-10-28 | 2005-05-19 | Welch Allyn, Inc. | Digital documenting ophthalmoscope |
US7338167B2 (en) | 2003-12-10 | 2008-03-04 | Joslin Diabetes Center, Inc. | Retinal imaging system |
JP4520252B2 (ja) * | 2004-09-02 | 2010-08-04 | 株式会社ニデック | 眼底カメラ |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1293086A (en) * | 1917-06-21 | 1919-02-04 | Graf Lens Corp | Lens. |
DE1472278A1 (de) * | 1966-04-22 | 1969-01-09 | Leitz Ernst Gmbh | Dreilinsiges Objektiv mit guter Korrektion des sekundaeren Spektrums |
DE1951159C3 (de) * | 1969-10-10 | 1975-12-04 | Nippon Kogaku K.K., Tokio | Ophthalmoskopische Kamera |
JPS5225252B2 ( ) * | 1972-09-16 | 1977-07-06 | ||
DD113996A1 ( ) * | 1974-07-05 | 1975-07-12 |
-
1976
- 1976-06-09 JP JP6752176A patent/JPS52150645A/ja active Granted
-
1977
- 1977-06-02 US US05/802,877 patent/US4162827A/en not_active Expired - Lifetime
- 1977-06-08 DE DE2725990A patent/DE2725990C2/de not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6449126U ( ) * | 1987-09-22 | 1989-03-27 | ||
JPH01112721U ( ) * | 1988-01-22 | 1989-07-28 |
Also Published As
Publication number | Publication date |
---|---|
DE2725990A1 (de) | 1977-12-15 |
DE2725990C2 (de) | 1982-11-11 |
US4162827A (en) | 1979-07-31 |
JPS52150645A (en) | 1977-12-14 |
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