JPS6434323A - Fundus camera - Google Patents

Fundus camera

Info

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
Application number
JP62192444A
Other languages
Japanese (ja)
Inventor
Kazuo Nunokawa
Eiichi Sano
Hidemitsu Tokoro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Topcon Corp
Original Assignee
Topcon Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Topcon Corp filed Critical Topcon Corp
Priority to JP62192444A priority Critical patent/JPS6434323A/en
Publication of JPS6434323A publication Critical patent/JPS6434323A/en
Pending legal-status Critical Current

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.
JP62192444A 1987-07-31 1987-07-31 Fundus camera Pending JPS6434323A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02283351A (en) * 1989-04-26 1990-11-20 Topcon Corp Apparatus for ophthalmic photography

Cited By (1)

* Cited by examiner, † Cited by third party
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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