VV5402 View Datasheet(PDF) - Vision

Part Name

Description

View to exact match

VV5402

Multi-standard Monochrome CMOS Image Sensor

Vision 

VISION V V 5402 Sensor

Blemish Specification

A Blemish is an area of pixels that produces output significantly different from its surrounding

pixels for the same illumination level. The definition of a Blemish Pixel varies according to testing

conditions as follows:

Test

1 - Black Frame

2 - Dark Current

3 - Pixel Variation

Exposure

Minimum

Maximum

Mid range

Illumination

Blemish Pixel output definition

Black

Black

66% Sat.

Differing more than ± 100mV. from modal value.

Output more than three times the modal value

(see Dark Current Signal above).

Differing more than ±35mV from modal value.

Note: The mode of pixel values must be within

±70 mV of 66% of Vsat for all devices.

Note: Gain is set to Minimum and Correction set to Linear for all tests; measurement of blemishes for

Test 3 is conducted under standard illumination (see above), set to produce average output of

66% saturation level.

The pixel area of the sensor is divided into the following areas to qualify the blemish specification:

Area A is the central area of the array as defined

by the box with sides 50% of the linear height

and 50% of the linear width of the array.

Area C is 10 vertical pixels by 10 horizontal pixels

around the edge of the array.

Area B is the remaining area of the array.

Area A

Area B

Area C

The blemish specification is then defined as follows:

Image Area Max. No. of Blemishes

Notes

Area A

0

This is the most critical image area

Area B

Area C

4

1

Any number

Unconnected single pixels

Of up to four connected pixels (2x2 max.)

Blemishes in this area are not significant, but the device

shall, however, have no row or column (>50% of row or

column) faults in any area.

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cd27031c.fm

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