For genuinely high optical power, much light would be required on the slide.

Such a material can be used to limit the amount of optical power entering a system.

Optical power can also be used to adjust a basic prescription for reading.

To make images clear for objects at different distances from the eye, its optical power needs to be changed.

Some optical power is lost into clad due to these modes.

Nothing was visible until the officer of the deck changed the optical power from low to medium.

The quantity 1/f is also known as the optical power of the lens.

It is typically used with some light source and a detector for optical power measurement.

One can compare the present optical power of each wavelength to the designed values and look for differences.

Three types of equipment can be used to measure optical power loss:

The connection between optical power and voltage in an imaging system is linear.

Since the source needs to be small, such an optical system cannot produce much optical power.

Thus, the optical power of the laser is a modulated waveform.

On the display unit, the measured optical power and set wavelength is displayed.

Another area of research is optical power limiting.

Light entering the eye passes first through the cornea, which provides much of the eye's optical power.

In humans, the total optical power of the relaxed eye is approximately 60 dioptres.

The most accurate field optical power meters claim 1% calibration accuracy.

This index gradient enhances the optical power of the lens.

The optical power of these lenses is measured in 0.25 diopter increments.

All real lenses have a nonzero thickness, however, which affects the optical power.

This means that much lower optical power is necessary for obtaining the same refractive index variation.

New materials and technologies may provide a method which can selectively adjust the optical power of a lens.

The optical power margin is usually expressed in decibels (dB).

Conversely a shorter focal length, or higher optical power, is associated with a wider angle of view.