Question

Consequences of internal light scatter within an image intensifier tube if not controlled will exhibit:

1. pincushin effect
2. veiling glare
3.contrast ratio
4. vignetting

Answer 1

Internal light scatter within an image intensifier tube can lead to image degradation effects such as (2)veiling glare and (4) vignetting.

Step-by-step explanation:

The student's question relates to the effects of internal light scatter within an image intensifier tube, such as those used in night vision equipment and other imaging technologies. Internal light scatter can have various negative effects on the resulting image if not adequately controlled. The proper handling of light is crucial to prevent image degradation, and in high-quality optical systems, various mechanisms are employed to minimize such negative consequences.

Significant issues that can arise from uncontrolled internal light scatter include:

• Veiling glare, which refers to a reduction in image contrast typically seen as a haze across the visual field, decreasing the visibility of fine details.
• Vignetting, a reduction in brightness or saturation at the edges of an image compared to the center, often due to the physical limitations of lens systems and the geometry of light paths.

Issues such as pincushin effect and contrast ratio are not a direct result of internal light scatter and therefore do not apply as consequences in this context.