Filter Unit Having a Tunable Wavelength, and an Arrangement with the Filter Unit
First Claim
1. A filter unit (10) for filtering light, having a first mask (3) and a prism unit (7), wherein the first mask (3) exhibits a plurality of first apertures;
- wherein there is a second mask (8) having second apertures, the prism unit (7) being arranged between the two masks (3, 8);
the first mask (3) and the second mask (8) exhibiting corresponding first and second apertures and forming an aperture pair; and
wherein there is a prism in the prism unit (7) for at least one aperture pair.
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Accused Products
Abstract
A filter unit (10) for filtering light comprising a first mask (3) with first cavities, a prism unit (7) and a second mask (8) with second cavities. The prism unit (7) is located between the two masks (3, 8), the first (3) and the second mask (8) having corresponding first and second cavities, which form cavity pairs. At least one second cavity in the second mask (8) is provided for each first cavity in the first mask (3). In addition, one prism is provided in the prism unit (7) for at least one pair of cavities. This produces an accurate, narrow-band filter unit. An assembly comprising the filter unit and a device for capturing images are also disclosed.
12 Citations
25 Claims
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1. A filter unit (10) for filtering light, having a first mask (3) and a prism unit (7), wherein the first mask (3) exhibits a plurality of first apertures;
- wherein there is a second mask (8) having second apertures, the prism unit (7) being arranged between the two masks (3, 8);
the first mask (3) and the second mask (8) exhibiting corresponding first and second apertures and forming an aperture pair; and
wherein there is a prism in the prism unit (7) for at least one aperture pair. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- wherein there is a second mask (8) having second apertures, the prism unit (7) being arranged between the two masks (3, 8);
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5. Filter unit (10) according to claim, wherein the at least one displacement unit (4, 6) is arranged to the side of the unit (7, 8) to be displaced.
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16. An arrangement having a filter unit (10) for filtering light, having a first mask and a prism unit, wherein the first mask exhibits a plurality of first apertures;
- wherein there is a second mask having second apertures, the prism unit being arranged between the two masks;
the first mask and the second mask exhibiting corresponding first and second apertures and forming an aperture pair; and
wherein there is a prism in the prism unit for at least one aperture pair and said arrangement further including a photosensitive layer (2), the photosensitive layer (2) being arranged adjacent to the second mask (3). - View Dependent Claims (17, 18)
- wherein there is a second mask having second apertures, the prism unit being arranged between the two masks;
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19. An apparatus for acquiring images comprising:
- a first mask (3) having first apertures, a prism unit (7) and a photosensitive layer (2), the prism unit (7) being arranged between the first mask (3) and the photosensitive layer (2), and the photosensitive layer (2) comprehending at least three regions in which the incident light is measurable, the light falling on the at least three regions originating from the same first aperture.
- View Dependent Claims (20, 21, 22, 23, 24, 25)
Specification