SU1248590A1 - Apparatus for investigating vessels of bulbar conjunctiva - Google Patents

Description

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The invention relates to medical technology, namely to ophthalmic diagnostic devices.

The purpose of the invention is to twist; therefore, research by using a fiber light guide, an optical window, as well as combining vodka with a difference and choosing light in a single cycle.

The drawing shows the proposed device.

The device contains an illumination channel with a lamp-in lamp 1, an incandescent lamp 2 and a condenser 3. The lighting channel is provided with an optical illuminator connected to a light source with light guide 4, and for a downstream light source 4 is installed in the focal plane of the condenser 3 and the incandescent lamp 2 and the flash lamp I are mounted on the same axis.

The opaque illuminator consists of the collector 5 and the illuminating 6 lenses of the objective 7, the diaphragm. We are 8 for limiting the light beam, the translucent reflective plate 9, the alternating light filters 10, the polarizer M. 2 and cameras

 3 "

To examine an object in a polarized light, a polarizer can be inserted into the device (not shown

The device works as follows. .

The light from the flash-lamp 1, the incandescent lamp passes through the condensate-sor 3, in the focus of which the end of the light guide 4 is placed. The second end of the light guide is placed in the focal plane

Compiled by L.Soloviev. Editor A.Shishkin. Tehred LoOleinik

Order 415.2 / 3 Circulation 660 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d.4 / 5

Production and printing company, Uzhgorod, ul. Project, 4

five

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bones of the collector lens. The luminous flux coming out of the optical fiber, the collector lens 5 and the lighting lens 6. Is projected into the exit pupil of the lens 7. The field aperture 8 is projected into the plane of the photographed part of the eye. Lighting the selected part of the eye, the light is reflected and the passage

through the lens 5, a translucent plate and an ocular p, enters the photo camera. Replaceable light filters 10 are additionally introduced into the system, as well as a polarizer 11 and an analyzer for examining the object in polarized light;.

In the device, the use of a flexible optical fiber ensures the transmission of light energy with very small losses. Due to the presence of a flexible fiber, the illumination channel can be located at any place chosen by the operator. Use- Calling an opaque-illuminator allows 5 to provide illumination of the photographed area of 1-2 mm f about 1 00-fold magnification.

In order to reduce the irritation of the eye with light, the operator uses a 1Gakalivan light, while photographing, with a photo flash, the pulse duration of which is shorter.

In the device due to the fact that the optical axes of the photo nozzles and the lighting are shifted, the operations of setting the illumination and focus sharpness are performed simultaneously and for a short period of time, which does not reflect on the physiological state of the eye and results in high quality photographs. - wah.

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Proofreader A.Zimokosov

Claims (1)

DEVICE FOR RESEARCH OF VESSELS OF THE BULBAR CONJUNCTIVE, containing a lens, an illumination channel with an incandescent lamp, a flash lamp and a condenser, characterized in that, in order to increase the accuracy of the study, the illumination channel is equipped with an opaque porthole connected to the light source by means of a light guide, an input the end of which is installed in the focal plane of the condenser, while the incandescent lamp and the flash lamp are installed on the same axis. 248590