Lenses Flashcards by Jessa shivo

Q

How do you make transitions?

A

Silver halides

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Q

How do you tint glass

A

Metallic oxides

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Q

How do you make anti-glare?

A

Magnesium fluoride

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Q

How does AR work?

A

Destructive interference

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Q

How do you make lenses harder?

A

Ion exchange

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Q

Minimum seg for progressive?

A

22mm

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Q

Most common separation of a DD?

A

13-14mm

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Q

The further the lens is away from face?

A

More plus

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Q

3 lens aberrations that cannot be fixed

A

Spherical
Coma
Chromatic aberration

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Q

3 lens aberrations that can be fixed

A

Oblique astigmatism
Curvature of field
Distortion

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