1. A method comprising:
setting a projector in a theatre to emit projected light representing a projected
image onto a screen in the theatre such that a light level of the projected light is at a
target light level;
configuring a lens aperture element in a projection lens of the projector in the
theatre to change an image contrast of the projected image; and
in response to configuring the lens aperture element, adjusting a setting for a
light emitter in the projector such that the light level of the projected light is at the target
light level.
2. The method of claim 1, further comprising adjusting the setting for the light
emitter to a maximum output for the target light level, and
configuring the lens aperture element to maintain the target light level.
3. The method of claim 2, further comprising configuring the lens aperture element
via a controller.
4. The method of claim 1, wherein the light level of the projected light is a level of
projected light that is reflected off the screen.
5. The method of claim 1, wherein the light level of the projected light is a level of
projected light that passes through an optical element that is external to the projection
lens.
6. The method of claim 1, further comprising configuring the lens aperture element
to change image contrast of the projected image.
7. The method of claim 1, wherein the lens aperture element is removable from
the projection lens
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We Claim:
8. The method of claim 1, wherein configuring the lens aperture element includes
adjusting an aperture setting that is continuously adjustable during projection.
9. The method of claim 1, wherein the screen has a bidirectional reflectance
distribution function that increases brightness from a location on the screen for at least
one seat in an audience of the theatre.
10. The method of claim 1, wherein a first lens aperture element in a first projection
lens has a first aperture with a first shape and a second lens aperture element in a
second projection lens has a second aperture with a second shape, and wherein the
first lens aperture element has a first light loss and the second lens aperture element
has a second light loss, and wherein the first light loss is different from the second light
loss based on a difference between the first shape and the second shape.