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 Title: |
US5170153:
Optical device for the display of light data collimated to infinity
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Migozzi, Jean-Blaise; Orsay, France
Ediar, Serge; St. Medard en Jalles, France
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| Assignee: |
Sextant Avionique, Meudon la Foret, France
other patents from SEXTANT AVIONIQUE (507310) (approx. 249)
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| Published / Filed: |
1992-12-08
/ 1990-12-04
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| Application Number: |
US1990000621879
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| IPC Code: |
Advanced:
B60K 35/00;
F41G 3/22;
G02B 27/01;
G09B 9/30;
G09B 9/32;
G02B 27/00;
Core:
F41G 3/00;
G09B 9/02;
more...
IPC-7:
G05G 3/02;
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| ECLA Code: |
F41G3/22B; G02B27/01; G02B27/01A; G02B27/01C; G02B27/01C1; G09B9/30E; G09B9/32C; S02B27/00H5J; S02B27/00H5K; S02B27/00H7D; S02B27/00H10C;
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| U.S. Class: |
Current:
345/008;
359/630;
Original:
340/705;
359/630;
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| Field of Search: |
340/705,980
351/209,210,211
128/745
359/630
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| Priority Number: |
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| Abstract: |
In an optical device for the display of light data collimated to infinity, an image generator associated with a collimation optical device gives the eye an image collimated to infinity. The light source that illuminates the image generator is controlled so that the position of its illuminating part is such that it gives a narrow beam with an image of this illuminating part centered on the pupil of the eye. This is possible by means of an oculometer that determines the coordinates of the center of the pupil of the eye and delivers a signal enabling an automatic control circuit to adjust the position of the illuminating part of the source accordingly. The device can be applied to pilots' helmets for the display of data overlaid on the landscape.
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| Attorney, Agent or Firm: |
Oblon, Spivak, McClelland, Maier & Neustadt ;
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| Primary / Asst. Examiners: |
Oberley, Alvin E.; Luu, Matthew
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
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| Designated Country: |
AT BE CH DE DK FR GB LI NL SE
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| Family: |
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First Claim:
Show all 5 claims |
What is claimed is:
1. An optical device for the display of light data collimated to infinity, comprising display means, an oculometer and an automatic control circuit, wherein the display means include an image generator to give an image and a collimation optical piece to receive the image given by the generator and to give a human eye an image collimated to infinity from the image given by the generator, wherein the display means have an exit pupil with a diameter smaller than that of the pupil of the eye, the position of said displayed exit pupil being adjustable, wherein the oculometer is designed to give a position signal, representing the coordinates of the center of the pupil of the eye, and wherein the automatic control circuit is designed to receive the position signal and to command the display means so that the exit pupil is centered on the pupil of the eye.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 21 U.S. patent(s) that reference this one
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