Light guiding film and plant growing method using the light guiding film
First Claim
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1. A light guiding film comprising:
- a light entrance portion which allows incident light from a light source to enter;
a wavelength converting portion which absorbs the incident light and converts the wavelength of the incident light to a wavelength utilizable for growth of a plant; and
a light exit portion which allows the light with the converted wavelength to exit,wherein the light entrance portion and the light exit portion are located at opposite sides of the light guiding film in a longitudinal direction of the light guiding film,wherein the light entrance portion includes a light entrance surface,wherein the wavelength converting portion is provided on a surface of the light entrance portion on a side opposite to the light entrance surface in a direction perpendicular to the longitudinal direction, andwherein a refractive index of the wavelength converting portion is higher than a refractive index of the light entrance portion.
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Abstract
A light guiding film including: a light entrance portion which allows incident light from a light source to enter; a wavelength converting portion which absorbs the incident light and converts the wavelength of the incident light to a wavelength utilizable for growth of a plant; and a light exit portion which allows the light with the converted wavelength to exit.
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Citations
15 Claims
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1. A light guiding film comprising:
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a light entrance portion which allows incident light from a light source to enter; a wavelength converting portion which absorbs the incident light and converts the wavelength of the incident light to a wavelength utilizable for growth of a plant; and a light exit portion which allows the light with the converted wavelength to exit, wherein the light entrance portion and the light exit portion are located at opposite sides of the light guiding film in a longitudinal direction of the light guiding film, wherein the light entrance portion includes a light entrance surface, wherein the wavelength converting portion is provided on a surface of the light entrance portion on a side opposite to the light entrance surface in a direction perpendicular to the longitudinal direction, and wherein a refractive index of the wavelength converting portion is higher than a refractive index of the light entrance portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A plant growing method comprising:
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growing a plant using a light guiding film, wherein the light guiding film comprises; a light entrance portion which allows incident light from a light source to enter; a wavelength converting portion which absorbs the incident light and converts the wavelength of the incident light to a wavelength utilizable for growth of a plant; and a light exit portion which allows the light with the converted wavelength to exit, wherein the light entrance portion and the light exit portion are located at opposite sides of the light guiding film in a longitudinal direction of the light guiding film, wherein the light entrance portion includes a light entrance surface, wherein the wavelength converting portion is provided on a surface of the light entrance portion on a side opposite to the light entrance surface in a direction perpendicular to the longitudinal direction, wherein a refractive index of the wavelength converting portion is higher than a refractive index of the light entrance portion, and wherein the wavelength of the light which has entered from the light entrance portion of the light guiding film is converted to a wavelength utilizable for growth of the plant, and the light exit portion of the light guiding film is placed so as to allow the light to exit from the light exit portion to a place for the growth of the plant. - View Dependent Claims (13, 14, 15)
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Specification