Title:
NON-CONTACT TYPE OPHTHALMOTONOMETER
Document Type and Number:
Japanese Patent JP3323058
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a convenient non-contact type ophthalmotonometer with which intraocular pressure can be continuously measured without waiting time.
SOLUTION: When power is supplied to a rotary solenoid 7, a piston 4 inside a cylinder 2 is moved up, and air is sprayed from a nozzle 9 of a head 3 to an eye H to be examined. The eye H to be examined is irradiated with infrared light from a light source 1, light reflected on the cornea of the eye H to be examined is received by a light receiving sensor 12 and by sending a signal from the light receiving sensor 12 through a pressure detection circuit 13 to a control circuit 16, the intraocular pressure of the eye H to be examined can be measured. In this case, two capacitors 17 and 18 are provided and by inputting a command from the control circuit 16 to a capacitor switching part 20 while operating a driving switch 13, the power of the capacitors 17 and 18 can be switched and supplied to the rotary solenoid 7.
Inventors:
Tsuyoshi Haraguchi
Application Number:
JP10262396A
Publication Date:
September 09, 2002
Filing Date:
April 24, 1996
Export Citation:
Assignee:
Topcon Co., Ltd.
International Classes:
A61B3/16; (IPC1-7): A61B3/16
Domestic Patent References:
| JP3118034A | ||||
| JP5207976A | ||||
| JP8566A | ||||
| JP556931A |
Attorney, Agent or Firm:
Tamio Nishiwaki