US20050174635A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection system and method comprising a fluorescence projection screen and a radiation source which can emit in the non-visible spectrum
Assignee: Bayerische Motoren Werke AG
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Filing: 2004-12-20
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Granted: —
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Expires: 2024-12-20
Abstract
Abstract A projection system and method are provided, the system includes a radiation source for generating electromagnetic radiation outside the visible wavelength range, an imaging unit, which can be irradiated by the radiation source, and a projection screen having a radiation-sensitive surface which, when excited by means of the above-mentioned invisible radiation, can emit fluorescent light in the visible wavelength range. The radiation-sensitive surface is formed of a material which, irrespective of the position, emits fluorescent light of different wavelengths as a function of the wavelength of the excitation radiation, and the radiation source can emit excitation radiation of different wavelengths.
Inventors
- 👤 Juergen Bruegl
- 👤 Michael Heimrath
- 👤 Sonja Hauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:56
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/0101; H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; B; B60; B60R; B60R11/00; B60R11/02; B60R11/0229; B60R11/0235; B60R11/04; C; C09; C09K; C09K2323/00; C09K2323/02; C09K2323/023; C09K2323/03; C09K2323/033
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
95 words
1 . A projection system, comprising: a radiation source for producing electromagnetic radiation outside a visible wavelength region; an imaging unit irradiated by the radiation source; a projection screen having a radiation-sensitive surface capable of emitting fluorescent light in the visible wavelength region upon being excited by the electromagnetic radiation outside the visible wavelength region; and wherein the radiation-sensitive surface is formed of a material which, irrespective of a position, emits fluorescent light of different wavelengths according to a wavelength of the excitation radiation, and wherein the radiation source emits excitation radiation of different wavelengths.
Claim 2
Dependent Claim
95 words
1 . A projection system, comprising: a radiation source for producing electromagnetic radiation outside a visible wavelength region; an imaging unit irradiated by the radiation source; a projection screen having a radiation-sensitive surface capable of emitting fluorescent light in the visible wavelength region upon being excited by the electromagnetic radiation outside the visible wavelength region; and wherein the radiation-sensitive surface is formed of a material which, irrespective of a position, emits fluorescent light of different wavelengths according to a wavelength of the excitation radiation, and wherein the radiation source emits excitation radiation of different wavelengths.
Claim 3
Dependent Claim
22 words
2 . The projection system according to claim 1 , wherein the radiation source comprises a laser having a controllable output wavelength.
Claim 4
Dependent Claim
21 words
3 . The projection system according to claim 1 , wherein the radiation source comprises several lasers of different output wavelengths.
Claim 5
Dependent Claim
32 words
4 . The projection system according to claim 1 , wherein the radiation source is capable of emitting the electromagnetic radiation in at least one of an ultraviolet and infrared wavelength region.
Claim 6
Dependent Claim
32 words
5 . The projection system according to claim 2 , wherein the radiation source is capable of emitting the electromagnetic radiation in at least one of an ultraviolet and infrared wavelength region.
Claim 7
Dependent Claim
32 words
6 . The projection system according to claim 3 , wherein the radiation source is capable of emitting the electromagnetic radiation in at least one of an ultraviolet and infrared wavelength region.
Claim 8
Dependent Claim
34 words
7 . The projection system according to claim 1 , further comprising at least one additional projection screen, each additional projection screen being irradiated by way of a separate imaging unit and radiation source.
Claim 9
Dependent Claim
34 words
8 . The projection system according to claim 1 , wherein the radiation-sensitive surface is one of embedded in a flat glass carrier and applied to one of a flat, transparent and reflecting carrier.
Claim 10
Dependent Claim
24 words
9 . The projection system according to claim 1 , further comprising a vehicle on or in which the projection system is operatively configured.
Claim 11
Dependent Claim
24 words
10 . The projection system according to claim 9 , wherein the projection screen is arranged in a dashboard area of the motor vehicle.
Claim 12
Dependent Claim
31 words
11 . The projection system according to claim 9 , wherein the projection screen is arranged in one of a side window area and a windshield area of the motor vehicle.
Claim 13
Dependent Claim
29 words
12 . The projection system according to claim 9 , wherein the projection screen is arranged in a rearward side area of a front seat of the motor vehicle.
Claim 14
Dependent Claim
18 words
13 . The projection system according to claim 12 , wherein the front seat is a driver's seat.
Claim 15
Dependent Claim
19 words
14 . The projection system according to claim 12 , wherein the front seat is a front passenger seat.
Claim 16
Dependent Claim
35 words
15 . The projection system according to claim 1 , wherein the imaging unit comprises one of a microelectromechanical system, an LCOS microdisplay and a scanning system utilizing one of two galvanometric mirrors and MRSs.
Claim 17
Dependent Claim
32 words
16 . The projection system according to claim 1 , wherein, when viewed from a direction of a viewer, the radiation source and the imaging unit are arranged behind the projection screen.
Claim 18
Dependent Claim
34 words
17 . The projection system according to claim 1 , wherein, when viewed from a direction of a viewer, the radiation source and the imaging unit are arranged in front of the projection screen.
Claim 19
Dependent Claim
43 words
18 . The projection system according to claim 1 , wherein, on a side facing away from the imaging unit, the projection screen has a coating that is impenetrable by the excitation radiation used or a coating that absorbs the excitation radiation used.
Claim 20
Dependent Claim
97 words
19 . A method for projecting information on a projection screen having a radiation-sensitive surface irradiated by a radiation source via an imaging unit, the method comprising the acts of: utilizing electromagnetic radiation outside of a visible wavelength region to irradiate the projection screen, wherein the radiation-sensitive surface of the projection screen, irrespective of a position, emits fluorescent light of different wavelengths in a visible wavelength region according to a wavelength of the excitation radiation; and varying the wavelength of the excitation radiation outside the visible wavelength region to emit the fluorescent light of the different wavelengths.
Claim 21
Dependent Claim
97 words
19 . A method for projecting information on a projection screen having a radiation-sensitive surface irradiated by a radiation source via an imaging unit, the method comprising the acts of: utilizing electromagnetic radiation outside of a visible wavelength region to irradiate the projection screen, wherein the radiation-sensitive surface of the projection screen, irrespective of a position, emits fluorescent light of different wavelengths in a visible wavelength region according to a wavelength of the excitation radiation; and varying the wavelength of the excitation radiation outside the visible wavelength region to emit the fluorescent light of the different wavelengths.
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