Patent EP0277883A2 successfully refreshed from Google Patents.
EP0277883A2
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EP
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Holographic deflection device
Assignee: Fujitsu Ltd
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Filing: 1988-02-02
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Granted: —
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Expires: 2008-02-02
Abstract
Abstract A holographic deflection device having a tunable laser (13), and at least one hologram (11) for deflecting light Incident thereupon from the tunable laser, so that the deflection of the light can be controlled by a change of the wavelengh of the beam from the tunable laser.
Inventors
- 👤 Takefumi Inagaki
- 👤 Fumio Yamagishi
- 👤 Hiroyuki Ikeda
- 👤 Shin-Ya Hasegawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 16:28
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/32; G02B26/00; G02B26/08; G02B26/0808
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
47 words
A holographic deflection device comprising at least one tunable laser, and at least one hologram for deflecting light incident thereupon from the tunable laser, so that the deflection of the light can be controlled by a change of the wavelength of the light by the tunable laser.
Claim 2
Dependent Claim
47 words
A holographic deflection device comprising at least one tunable laser, and at least one hologram for deflecting light incident thereupon from the tunable laser, so that the deflection of the light can be controlled by a change of the wavelength of the light by the tunable laser.
Claim 3
Dependent Claim
41 words
A holographic deflection device according to claim 1, comprising a plurality of diffraction holograms which are arranged so that the variation of angle of deflection by the holograms due to the change in wavelength are integrated by a plurality of diffractions.
Claim 4
Dependent Claim
18 words
A holographic deflection device according to claim 2, wherein said diffraction holograms are located in an angle arrangement.
Claim 5
Dependent Claim
19 words
A holographic deflection device according to claim 3, wherein said diffraction holograms are provided with an optical medium therebetween.
Claim 6
Dependent Claim
14 words
A holographic deflection device according to claim 4, wherein said optical medium is air.
Claim 7
Dependent Claim
14 words
A holographic deflection device according to claim 4, wherein said optical medium is glass.
Claim 8
Dependent Claim
18 words
A holographic deflection device according to claim 2, wherein said diffraction holograms comprise at least one transmission hologram.
Claim 9
Dependent Claim
22 words
A holographic deflection device according to claim 7, wherein said diffraction holograms comprise a hologram lens for converging light upon a point.
Claim 10
Dependent Claim
18 words
A holographic deflection device according to claim 2, wherein said diffraction holograms comprise at least one reflection hologram.
Claim 11
Dependent Claim
26 words
A holographic deflection device according to claim 2, wherein said diffraction holograms comprise at least one transmission hologram and at least one reflection hologram in combination.
Claim 12
Dependent Claim
31 words
A holographic deflection device according to claim 2, wherein said diffraction holograms comprise at least one transmission hologram and/or at least one reflection hologram, and a reflecting surface means in combination.
Claim 13
Dependent Claim
19 words
A holographic deflection device according to claim 2, comprising a hologram module in which said diffraction holograms are provided.
Claim 14
Dependent Claim
24 words
A holographic deflection device according to claim 12, wherein said hologram module comprises a transparent optical body in which said diffraction holograms are provided.
Claim 15
Dependent Claim
18 words
A holographic deflection device according to claim 13, wherein said transparent optical body has a polygonal cross section.
Claim 16
Dependent Claim
20 words
A holographic deflection device according to claim 13, wherein said transparent optical body is made of a polygonal glass body.
Claim 17
Dependent Claim
29 words
A holographic deflection device according to claim 13, wherein said diffraction holograms are radially arranged in the polygonal transparent body with respect to the center axis of the polygon.
Claim 18
Dependent Claim
29 words
A holographic deflection device according to claim 16, wherein said polygonal transparent body has a square cross section and wherein said diffraction holograms are arranged along the diagonals thereof.
Claim 19
Dependent Claim
33 words
A holographic deflection device according to claim 17, wherein said square transparent body is made of four identical rectangular prisms, said diffraction hologram being formed on one side face of each rectangular prism.
Claim 20
Dependent Claim
34 words
A holographic deflection device according to claim 17, wherein said square transparent body is made of four rectangular prisms, two opposed rectangular prisms of which have said diffraction holograms on adjacent side faces thereof.
Claim 21
Dependent Claim
49 words
A holographic deflection device according to claim 19, wherein said square transparent body has a beam incident portion upon which the light is incident to the transparent body toward the diffraction holograms and a beam emitting portion through which the outgoing light is finally emitted from the transparent body.
Claim 22
Dependent Claim
35 words
A holographic deflection device according to claim 20, wherein said beam incident portion and the beam emitting portion are formed on the side faces of the rectangular prisms on which said diffraction holograms are formed.
Claim 23
Dependent Claim
18 words
A holographic deflection device according to claim 1, wherein said at least one diffraction hologram has plane gratings.
Claim 24
Dependent Claim
26 words
A holographic deflection device according to claim 1, comprising a hologram module which has a rectangular transparent optical body, in which the diffraction hologram is provided.
Claim 25
Dependent Claim
47 words
A holographic deflection device according to claim 23, wherein said diffraction hologram is located along a diagonal of the rectangle, and wherein said rectangular transparent optical body has on adjacent side faces thereof reflecting surfaces which reflect the light diffracted by the hologram inward toward the hologram.
Claim 26
Dependent Claim
47 words
A holographic deflection device according to claim 23, wherein said diffraction hologram is located along a diagonal of the rectangle, and wherein said rectangular transparent optical body has, on adjacent side faces thereof, reflecting surfaces which reflect the light diffracted by the hologram inward toward the hologram.
Claim 27
Dependent Claim
59 words
A holographic deflection device according to claim 25, wherein said transparent optical body has a beam incident portion upon which the light from the tunable laser is incident to the transparent body on one side face thereof and a beam emitting portion through which the outgoing light is finally emitted therefrom on one side face of the transparent body.
Claim 28
Dependent Claim
37 words
A holographic deflection device according to claim 26, wherein said beam incident portion and beam emitting portion are formed on the same side face of the transparent body as that on which the reflecting surface is formed.
Claim 29
Dependent Claim
34 words
A holographic deflection device according to claim 26, wherein said beam incident portion and beam emitting portion are formed on the side faces of the transparent body on which the reflecting surfaces are formed.
Claim 30
Dependent Claim
37 words
A holographic deflection device according to claim 26, wherein one of said reflecting surfaces is inclined at a predetermined inclination angle with respect to a vertical plane perpendicular to the vertical plane including the other reflecting surface.
Claim 31
Dependent Claim
18 words
A holographic deflection device according to claim 29, wherein light is incident upon the incident portion perpendicularly thereto.
Claim 32
Dependent Claim
24 words
A holographic deflection device according to claim 1, wherein light is incident upon said at least one diffraction hologram at a predetermined incident angle.
Claim 33
Dependent Claim
16 words
A holographic deflection device according to claim 30, wherein said diffraction beam has inclined diffraction gratings.
Claim 34
Dependent Claim
35 words
A holographic deflection device according to claim 1, comprising a polygonal transparent optical body which has said at least one diffraction hologram and a reflecting surface on adjacent side faces of the polygonal transparent body.
Claim 35
Dependent Claim
23 words
A holographic deflection device according to claim 33, wherein said adjacent side faces form a predetermined angle therebetween of less than 90° .
Claim 36
Dependent Claim
17 words
A holographic deflection device according to claim 33, wherein said diffraction hologram is a reflection diffraction hologram.
Claim 37
Dependent Claim
19 words
A holographic deflection device according to claim 35, wherein said reflection surface is formed by a reflection diffraction hologram.
Claim 38
Dependent Claim
19 words
A holographic deflection device according to claim 33, comprising reflection diffraction holograms and a transmission diffraction hologram in combination.
Claim 39
Dependent Claim
60 words
A holographic deflection device according to claim 38, wherein said transparent optical body is made of two identical triangular bodies which are joined together to form a triangle in cross section, and wherein said reflection diffraction holograms are aligned on one side face of the triangle, said transmission diffraction hologram being located along the join of the two triangular bodies.
Claim 40
Dependent Claim
14 words
A holographic deflection device according to claim 1, comprising a plurality of tunable lasers.
Claim 41
Dependent Claim
21 words
A holographic deflection device according to claim 1, wherein the light emitted from said at least one diffraction hologram is scanned.
Claim 42
Dependent Claim
30 words
A holographic deflection device according to claim 40, wherein the wavelength of the light is controlled in accordance with time so as to scan the light at a constant speed.
Claim 43
Dependent Claim
23 words
A holographic deflection device according to claim 1, wherein said at least one diffraction hologram has equi-pitch plane gratings having different Bragg angles.
References Cited (Backward Citations)
No citation records indexed.
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