JPS6434323A - Fundus camera - Google Patents
Fundus cameraInfo
- Publication number
- JPS6434323A JPS6434323A JP62192444A JP19244487A JPS6434323A JP S6434323 A JPS6434323 A JP S6434323A JP 62192444 A JP62192444 A JP 62192444A JP 19244487 A JP19244487 A JP 19244487A JP S6434323 A JPS6434323 A JP S6434323A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- deterioration
- filter
- state
- output
- 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
- Eye Examination Apparatus (AREA)
Abstract
PURPOSE:To always observe and take an infrared fluorescent image in a proper state, by detecting the deterioration state of an infrared filter and displaying the deterioration thereof to emit an alarm. CONSTITUTION:An illumination system 1 has an observing beam source lamp 2, an infrared filter 5, a condensing lens 3, a half mirror 4, an infrared exciter filter 6, an iris plate 12, a partial mirror 14, a reflecting mirror 16 and a relay lens 18. An infrared sensor 34 is connected to a beam source lamp 2 through a comparing circuit 60 and a control circuit 62. A beam quantity comparing circuit 112 compares the ratio of the output of the infrared sensor 34 and that of a photoelectric converter 110 with the reference value being the output of a reference tansmissivity signal generating circuit 116 and, when there is difference of a predetermined value or more, the deterioration of the infrared exciter filter 6 is identified and this state is displayed on a display part 114.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62192444A JPS6434323A (en) | 1987-07-31 | 1987-07-31 | Fundus camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62192444A JPS6434323A (en) | 1987-07-31 | 1987-07-31 | Fundus camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6434323A true JPS6434323A (en) | 1989-02-03 |
Family
ID=16291407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62192444A Pending JPS6434323A (en) | 1987-07-31 | 1987-07-31 | Fundus camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6434323A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02283351A (en) * | 1989-04-26 | 1990-11-20 | Topcon Corp | Apparatus for ophthalmic photography |
-
1987
- 1987-07-31 JP JP62192444A patent/JPS6434323A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02283351A (en) * | 1989-04-26 | 1990-11-20 | Topcon Corp | Apparatus for ophthalmic photography |
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