Instruction manual

AVT Prosilica GC Technical Manual V2.0.1

Cleaning the sensor

DO NOT CONTACT CLEAN SENSOR UNLESS

ABSOLUTELY NECESSARY

Identifying Debris

Debris on the image sensor or optical components will appear as a darkened area or smudge on the image

that does not move as the camera is moved. Do not confuse this with a pixel defect which will appear as a

distinct point.

Locating Debris

Before attempting to clean the image sensor, it is important to first determine that the problem is due to

debris on the sensor window. To do this you should be viewing a uniform image, such as a piece of paper,

with the camera. Debris will appear as a dark spot or dark region that does not move as the camera is

moved. To determine that the debris is not on the camera lens, rotate the lens independent of the

camera. If the spot moves as the lens moves, then the object is on the lens -not on the image sensor- and

therefore cleaning is not required. If the camera has an IR filter, then rotate the IR filter. If the object

moves then the particle is on the IR filter not the sensor. If this is the case remove the IR filter carefully

using a small flat head screw driver. Clean both sides of the IR filter using the same techniques as

explained below for the sensor window.

DO NOT TOUCH ANY OPTICS WITH FINGERS. OIL FROM

FINGERS CAN DAMAGE FRAGILE OPTICAL COATINGS.

Cleaning with Air

If it is determined that debris is on the sensor window, then remove the camera lens, and blow the sensor

window directly with clean compressed air. If canned air is used, do not shake or tilt the can prior to

blowing the sensor. View a live image with the camera after blowing. If the debris is still there, repeat this

process. Repeat the process a number of times with increased intensity until it is determined that the

particulate cannot be dislodged. If this is the case then proceed to the contact cleaning technique.

Contact Cleaning

Only use this method as a last resort. Use 99% laboratory quality isopropyl alcohol and clean cotton

swabs. Dampen the swab in the alcohol and gently wipe the sensor in a single stroke. Do not reuse the

same swab. Do not wipe the sensor if the sensor and swab are both dry. You must wipe the sensor quickly

after immersion in the alcohol, or glue from the swab will contaminate the sensor window. Repeat this

process until the debris is gone. If this process fails to remove the debris, then contact AVT.