IT1102617B - Hemispherical field sight testing instrument - has projection system with prisms and mirrors rotating about axes at right angles - Google Patents

Hemispherical field sight testing instrument - has projection system with prisms and mirrors rotating about axes at right angles

Info

Publication number
IT1102617B
IT1102617B IT4821778A IT4821778A IT1102617B IT 1102617 B IT1102617 B IT 1102617B IT 4821778 A IT4821778 A IT 4821778A IT 4821778 A IT4821778 A IT 4821778A IT 1102617 B IT1102617 B IT 1102617B
Authority
IT
Italy
Prior art keywords
axes
testing instrument
prisms
right angles
projection system
Prior art date
Application number
IT4821778A
Other languages
Italian (it)
Other versions
IT7848217A0 (en
Original Assignee
Ignatiadis Anastasios
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 Ignatiadis Anastasios filed Critical Ignatiadis Anastasios
Publication of IT7848217A0 publication Critical patent/IT7848217A0/en
Application granted granted Critical
Publication of IT1102617B publication Critical patent/IT1102617B/en

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  • Eye Examination Apparatus (AREA)

Abstract

A sight testing instrument has a projector and a spherical surface forming part of an automatically registering zone, into the centre of which the line of sight of the patient is directed. The device is also used to obtain information from the patient regarding the receipt of signals on the retina. At the centre is a totally reflective prism (27) and a projection lens (28) which rotate about a horizontal axis. This is followed by an auxiliary prism (21) so as to follow a curved path (17), so that a beam of light passes through two axes of rotation the same distance from the projected field at all points of the hemisphere. The optical system is mounted on the side of a plate (15) onto which the beam is projected, and this plate rotates about a vertical axis.
IT4821778A 1977-02-28 1978-02-28 Hemispherical field sight testing instrument - has projection system with prisms and mirrors rotating about axes at right angles IT1102617B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR5723377 1977-02-28

Publications (2)

Publication Number Publication Date
IT7848217A0 IT7848217A0 (en) 1978-02-28
IT1102617B true IT1102617B (en) 1985-10-07

Family

ID=10929540

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4821778A IT1102617B (en) 1977-02-28 1978-02-28 Hemispherical field sight testing instrument - has projection system with prisms and mirrors rotating about axes at right angles

Country Status (1)

Country Link
IT (1) IT1102617B (en)

Also Published As

Publication number Publication date
IT7848217A0 (en) 1978-02-28

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