Topcon BG-5 User manual

INSTRUCTION MANUAL
BACKGROUND ILLUMINATION
BG-5

1
INTRODUCTION
Thank you for purchasing the TOPCON BG-5 Background Illumination.
This instrument is combined with the slit lamp and is used as an auxiliary illumination.
This instrument has the following features.
• Used for background illumination.
• The light level is changed according to the illumination level of the slit lamp.
• The following functions is provided.
- The light level for visible observation is changed by three steps (full-open, half-open,
OFF).
- The illumination is changed to the infrared light.
This manual outlines the BG-5 Background Illumination, including operating procedures and
troubleshooting.
Always keep this Instruction Manual at hand.
This instrument is an accessory of the commercial product, Slit Lamp SL-D701.

2
CAUTIONS FOR USE
Basic caution
The components of this instrument must be fitted securely.
Disposal
Dispose of the instrument according to local disposal and recycling laws.
ENVIRONMENTAL CONDITIONS FOR USE
Temperature : 10°C to 40°C
Humidity : 30% to 90% (non-condensing)
Air pressure : 700hPa to 1060hPa
STORAGE, USAGE PERIOD
1. Storage (without wrapping (without package))
* Temperature : 10°C to 40°C
Humidity : 10% to 95% (without dew condensation)
Air pressure : 700hPa to 1060hPa
* THIS INSTRUMENT DOES NOT MEET THE TEMPERATURE REQUIREMENTS OF ISO 15004-
1 FOR STORAGE. DO NOT STORE THIS INSTRUMENT IN CONDITIONS WHERE THE TEM-
PERATURE MAY RISE ABOVE 40°C OR FALL BELOW 10°C.
2. When storing the instrument, ensure that the following conditions are met:
(1) The instrument must not be splashed with water.
(2) Do not store the instrument in an environment where air pressure, temperature, humidity, venti-
lation, sunlight, dust, salty/sulfurous air, etc. could cause damage.
(3) Do not store or transport the instrument on a slanted or uneven surface or in an area where it is
subject to vibrations or instability.
(4) Do not store the instrument where chemicals are stored or gas is generated.
3. Normal life span of the instrument:
8 years from delivery providing regular maintenance is performed (according to the self-certification
[TOPCON data])
ENVIRONMENTAL CONDITIONS FOR PACKAGING IN STORAGE
Temperature : -20°C to 50°C
Humidity : 10% to 95%
ENVIRONMENTAL CONDITIONS FOR PACKAGING IN TRANSPORTAION
Temperature : -40°C to 70°C
Humidity : 10% to 95%
CHECKPOINTS FOR MAINTENANCE
Maintenance by user
1. Regularly maintain and check the instrument and its parts.
2. When using the instrument after a prolonged period of inactivity, confirm normal and safe operation
beforehand.

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CONTENTS
INTRODUCTION .............................................................................................................................. 1
NAME OF PARTS
..................................................................................................................................................... 4
ASSEMBLY PROCEDURE
MOUNTING THE BACKGROUND ILLUMINATION .................................................................... 5
OPERATIONS PROCEDURE
..................................................................................................................................................... 6
TROUBLESHOOTING
..................................................................................................................................................... 6
PERFORMANCE & SPECIFICATIONS
PERFORMANCE ......................................................................................................................... 7
DIMENSIONS AND WEIGHT ...................................................................................................... 7
PURPOSE OF USE ..................................................................................................................... 7
OPERATION PRINCIPLE ............................................................................................................7
MAINTENANCE
REGULAR MAINTENANCE ........................................................................................................ 7

4
NAME OF PARTS
NAME OF PARTS
Pin
Lever
Power cable
Infrared LED
Power connector
Lens

5
ASSEMBLY PROCEDURE
ASSEMBLY PROCEDURE
MOUNTING THE BACKGROUND ILLUMINATION
1Make sure that the power switch of the slit lamp is OFF.
2Connect the power connector of BG-5 to the plug of the slit lamp's illumination unit.
3Insert the two pins of BG-5 into the guide hole of the slit lamp until they stop.
NOTES
• Be careful not to stain the lens with fingerprint or dust. The opti-
cal performance may be damaged.
• For the component names of slit lamp, refer to the instruction
manual of your slit lamp.
Plug
Power connector
Pin
Guide hole

6
OPERATIONS PROCEDURE
OPERATIONS PROCEDURE
1Turn on the power switch of the slit lamp.
2To adjust the illumination light of the slit lamp and the background illumination light at the same
time, use "Brightness selector knob" on the slit lamp.
3To adjust only the background illumination light, adjustment can be made by three steps (OFF,
full-open, half-open) by "Lever".
4To change to the infrared light, set "Lever" at the position shown below.
TROUBLESHOOTING
If there is a problem, contact your dealer or TOPCON (see the back cover).
NOTES To avoid troubles in the instrument, do not pull the power cable
forcedly.
NOTES
To avoid photographing the reflection of infrared LED of BG-5, turn
off the BG-5 when photographing using digital camra unit DC-4
(optional accessory) with a visible light source.
Lever
Light level OFF Full-open Half-open
Infrared light

7
PERFORMANCE & SPECIFICATIONS
PERFORMANCE & SPECIFICATIONS
PERFORMANCE
• Switching the illumination level by three steps or switching to the infrared light
(Carry out infrared observation by DIGITAL CAMERA UNIT DC-4 (optional accessory) or by combin-
ing TV Relay Lens (optional accessory) or TV Attachment (optional accessory) with TV Camera with
Infrared Sensitivity.)
ELECTRIC RATING
Source voltage : DC 12V
Power input : 1.6W
DIMENSIONS AND WEIGHT
Dimensions : 51mm (W) × 31.6mm (D) × 271mm (H)
Weight : 50g
PURPOSE OF USE
This instrument is combined with the slit lamp and is used as an auxiliary illumination. It is also used
as the illumination for infrared observation of eyeball and its appendages.
OPERATION PRINCIPLE
This instrument is an auxiliary illumination whose light source is LED.
MAINTENANCE
REGULAR MAINTENANCE
Before starting operation, check the following points.
• The pins must be securely fitted into the guide hole of the slit lamp.
• The illumination light level can be changed by operating the lever. The illumination can be changed
to the infrared illumination light.
• The lever can be moved securely.

Please provide the following information when contacting us regarding questions
about this instrument:
•Model name: BG-5
•Serial No.: This is described on the rating nameplate.
•Period of use: Please inform us of the date of purchase.
•Defective condition: Please provide us with as much detail as possible on the
problem.
BACKGROUND ILLUMINATION
BG-5
INSTRUCTION MANUAL
The 2013 version (2013.08-100TH )
Date of issue: August 19, 2013
Published by TOPCON CORPORATION
75-1 Hasunuma-cho, Itabashi-ku, Tokyo, 174-8580 Japan.
©2013 TOPCON CORPORATION
ALL RIGHTS RESERVED
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BACKGROUND ILLUMINATION
BG-5
44797 92030
Printed in Japan 1308-100TH
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