Quiz 1 Flashcards

1
Q

Label the following lens diagram as to lens design.

(select the correct response)

meniscus

periscopic

myopic plus

hyperopic minus

A

meniscus

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2
Q

Using the Nominal Lens Power formula, calculate the total lens power having a front surface curve of +6.00 and a back surface curve of -3.00.

A

+3.00

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3
Q

Label the following lens diagram as to lens design.

meniscus convex

meniscus concave

periscopic convex

periscopic concave

A

periscopic concave

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4
Q

The index of refraction of crown glass is:

A

1.523

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5
Q

Label the following lens diagram as to lens design and nominal power.

meniscus cc/-4.00

periscopic cc/-4.00

meniscus cx/+4.00

periscopic cx/+4.00

A

meniscus cc/ -4.00

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6
Q

Label the following lens diagram as to lens design and nominal power.

pl cc/-2.75

pl cx/-2.75

pl cc/plano

pl cx/plano

A

pl cc/ -2.75

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7
Q

Label the following lens diagram as to lens design.

meniscus convex

meniscus concave

periscopic convex

periscopic concave

A

periscopic convex

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8
Q

Label the following lens diagram as to lens design and nominal power.

equiconcave/+6.00

equiconvex/+6.00

meniscus cc/-6.00

meniscus cx/-6.00

A

equiconvex/ +6.00

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9
Q

Define the Nominal Lens Power Formula

F2 + F1 = F Total

F1 + F2= F Total

F Total= F1 - F2

A

F1 + F2 = F Total

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10
Q

What contribution did Ben Franklin give to the optical profession?

A

invented bifocal lenses

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