POWER GENERATING MODULE AND LIGHT GUIDING FILM THEREOF
First Claim
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1. A light guiding film comprising:
- a film base, having a first side surface and a second side surface opposite the first side surface; and
at least one microstructure, disposed on the first side surface or the second side surface of the film base;
whereby a plurality of incident light beams become a plurality of output light beams after passing through the light guiding film, an output angle is defined as the angle between the output light beam and the light guiding film, the output angle is defined as 0 degree when the output light beam is downward and parallel with the light guiding film, the output angle is defined as 180 degrees when the output light beam is upward and parallel with the light guiding film, the total luminous flux of the output light beams with the output angles from 70 to 110 degrees is more than 40% of the total luminous flux of the output light beams with the output angles from 0 to 180 degrees.
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Abstract
The present invention relates to a power generating module and light guiding film thereof. The light guiding film includes a film base and at least one microstructure. The microstructure is disposed on a side surface of the film base. After the input light beams pass through the light guiding film, the total luminous flux of the output light beams with the output angles from 70 to 110 degrees is more than 40% of the total luminous flux of the output light beams with the output angles from 0 to 180 degrees. Therefore, most of the output light beams emit in the normal direction.
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11 Claims
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1. A light guiding film comprising:
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a film base, having a first side surface and a second side surface opposite the first side surface; and at least one microstructure, disposed on the first side surface or the second side surface of the film base; whereby a plurality of incident light beams become a plurality of output light beams after passing through the light guiding film, an output angle is defined as the angle between the output light beam and the light guiding film, the output angle is defined as 0 degree when the output light beam is downward and parallel with the light guiding film, the output angle is defined as 180 degrees when the output light beam is upward and parallel with the light guiding film, the total luminous flux of the output light beams with the output angles from 70 to 110 degrees is more than 40% of the total luminous flux of the output light beams with the output angles from 0 to 180 degrees. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A power generating module, comprising:
a light guiding film, comprising; a film base, having a first side surface and a second side surface opposite the first side surface; and at least one microstructure, disposed on the first side surface or the second side surface of the film base, whereby a plurality of incident light beams become a plurality of output light beams after passing through the light guiding film, an output angle is defined as the angle between the output light beam and the light guiding film, the output angle is defined as 0 degree when the output light beam is downward and parallel with the light guiding film, the output angle is defined as 180 degrees when the output light beam is upward and parallel with the light guiding film, the total luminous flux of the output light beams with the output angles from 70 to 110 degrees is more than 40% of the total luminous flux of the output light beams with the output angles from 0 to 180 degrees; and a photoelectric conversion element, disposed adjacent to the first side surface or the second side surface of the film base to receive the output light beams from the light guiding film. - View Dependent Claims (10, 11)
Specification