Light guiding apparatus, lighting apparatus, space modulation part, and image projection apparatus
First Claim
1. A light guiding apparatus which guides emitted light emitted from a light source, comprising:
- a first transparent member which is solid;
a second transparent member which is solid and is moved relatively to the first transparent member to take a contact position where the second transparent member is in contact with the first transparent member or a separate position where the second transparent member is separated from the first transparent member; and
a transparent member holding portion which moves the second transparent member relatively to the first transparent member, and holds the second transparent member in one of the contact or separate position, wherein the first transparent member is provided with a light entry surface into which the emitted light enters, a first side surface in which light guidance is performed to the emitted light entering the light entry surface by way of complete reflection by an inner surface thereof when the second transparent member is in the separate position, and in which the emitted light is transmitted into the second transparent member when the second transparent member is in contact, and a first light emitting end surface which emits the emitted light which is guided, and wherein the second transparent member is provided with a second side surface which faces the first side surface so that the second side surface can contact the first side surface, and a third side surface in which, when the second side surface and the first side surface are in contact with each other, light guidance toward at least the first light emitting end surface is performed to the emitted light which is entering the second side surface by way of complete reflection by an inner surface thereof.
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Accused Products
Abstract
A light guiding apparatus has a first transparent member, a second transparent member, and a transparent member holding portion. The first transparent member has a light entry surface, a first side surface at which guidance of light by way of complete reflection of the emitted light is performed when the second transparent member is separated, and the emitted light is transmitted into the second transparent member when the second transparent member is in contact, and a first light emitting end surface. The second transparent member has a second side surface, and a third side surface at which when the two side surfaces are in contact with each other, guidance of light toward at least the first light emitting end surface by way of complete reflection of the emitted light is performed.
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Citations
28 Claims
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1. A light guiding apparatus which guides emitted light emitted from a light source, comprising:
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a first transparent member which is solid;
a second transparent member which is solid and is moved relatively to the first transparent member to take a contact position where the second transparent member is in contact with the first transparent member or a separate position where the second transparent member is separated from the first transparent member; and
a transparent member holding portion which moves the second transparent member relatively to the first transparent member, and holds the second transparent member in one of the contact or separate position, wherein the first transparent member is provided with a light entry surface into which the emitted light enters, a first side surface in which light guidance is performed to the emitted light entering the light entry surface by way of complete reflection by an inner surface thereof when the second transparent member is in the separate position, and in which the emitted light is transmitted into the second transparent member when the second transparent member is in contact, and a first light emitting end surface which emits the emitted light which is guided, and wherein the second transparent member is provided with a second side surface which faces the first side surface so that the second side surface can contact the first side surface, and a third side surface in which, when the second side surface and the first side surface are in contact with each other, light guidance toward at least the first light emitting end surface is performed to the emitted light which is entering the second side surface by way of complete reflection by an inner surface thereof. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 24, 25, 26, 27, 28)
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2. A light guiding apparatus which guides emitted light emitted from a light source, comprising:
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a first transparent member which is solid;
a second transparent member which is solid and is moved relatively to the first transparent member to take a contact position where the second transparent member is in contact with the first transparent member or a separate position where the second transparent member is separated from the first transparent member; and
a transparent member holding portion which moves the second transparent member relatively to the first transparent member, and holds the second transparent member in one of the contact or separate position, wherein the first transparent member is provided with a light entry surface into which the emitted light enters, a first side surface in which light guidance is performed to the emitted light entering the light entry surface by way of complete reflection by an inner surface thereof when the second transparent member is in the separate position, and in which the emitted light is transmitted into the second transparent member when the second transparent member is in the contact position, and a first light emitting end surface which emits the emitted light which is guided, and wherein the second transparent member is provided with a second side surface which faces the first side surface so that the second side surface can contact the first side surface, and a second light emitting end surface which emits the emitted light entering the second side surface. - View Dependent Claims (19, 22, 23)
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Specification