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LZ0P3616

1/4-type Built-in Lens Color CCD Area Sensors with 270 k Pixels

Sharp Electronics 

PRECAUTIONS FOR BUILT-IN LENS CCD AREA SENSORS

PRECAUTIONS FOR BUILT-IN LENS CCD

AREA SENSORS

1. Package Breakage

In order to prevent the package, the lens holder,

and the lens from being broken, follow the

instructions below :

1) The CCD is a precise optical component and

the package-base material is ceramic.

Therefore,

ø Take care not to drop the device when

mounting, handling, or transporting.

ø Avoid giving a shock to the package.

Especially when leads are fixed to the socket

or the circuit board, a small shock could

break the package more easily than when the

package isn’t fixed.

2) When adjusting the focus, screw the lens holder

to the circuit board before soldering the leads.

At that time, make sure to use a circuit board

with plenty of strength, and to avoid the

package and the lens holder from being broken,

the following screw and clamp torque are

recommended.

ø Recommended mounting screw :

Ø1.7 tapping screw (B-tight type),

Length, L = the thickness of the circuit board

+ 5 mm

ø Recommended clamp torque : 0.012 N·m

[however, when the thickness of the circuit

board is thinner than t = 2.0 mm]

3) If any damage or breakage occurs on the

surface of the lens, its characteristics could

deteriorate.

Therefore,

ø Do not hit the lens.

ø Do not give a shock large enough to cause

distortion.

ø Do not scrub or scratch the surface of the

lens.

– Even a soft cloth or applicator, if dry, could

cause dust to scratch the lens.

2. Electrostatic Damage

As compared with general MOS-LSI, CCD has

lower ESD. Therefore, take the following anti-static

measures when handling the CCD :

1) Always discharge static electricity by grounding

the human body and the instrument to be used.

To ground the human body, provide resistance

of about 1 M$ between the human body and

the ground to be on the safe side.

2) When directly handling the device with the

fingers, hold the lens holder and do not touch

the lead.

3) To avoid generating static electricity,

a. do not scrub the device with cloth or plastic.

b. do not attach any tape or labels.

c. do not clean the device with dust-cleaning

tape.

4) When storing or transporting the device, put it in

a container of conductive material.

3. Dust and Contamination

Dust or contamination on the surface of the lens

and the inside of the lens holder could deteriorate

the output characteristics or cause a scar. In order

to minimize dust or contamination on the device,

take the following precautions :

1) Do not remove the lens from the body.

Especially when adjusting macro, be careful not

to remove the lens by turning it counter-

clockwise too much.

2) Do not touch the surface of the lens with the

fingers. If dust or contamination gets on the

surface of the lens, the following cleaning

method is recommended :

ø Handle the built-in lens CCD in a clean

environment such as a cleaned booth. (The

cleanliness level should be, if possible, class

1 000 at least.)

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