Screen for a free and restricted operating mode
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 15, 2023
Grant Date -
N/A
app pub date -
Mar 24, 2021
filing date -
Nov 27, 2015
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Non-US Coverage
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Forward Citations
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Abstract
A screen having a free-viewing mode and a restricted-viewing mode, comprising a backlight emitting light into an unrestricted angular range in the free-viewing mode, and into a restricted angular range in the restricted-viewing mode. A transmissive imager is in front of the backlight. Light sources are outside the display area of the imager, and a transparent plate-shaped light guide scattering particles distributed therein is in front of the imager. In the free-viewing mode, the light sources are off, so that light from the backlight passing the imager passes the light guide unaffected. In the restricted-viewing mode, the lights are on, so that light radiating into a restricted angular range and passing the imager is superimposed by light that is scattered into the viewing space due to irradiation of light from the light guide. Thereby, the visibility of an image on the imager is reduced outside the restricted angular range.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
SIOPTICA GMBH | MORITZ-VON-ROHR-STR 1A JENA 07745 |
International Classification(s)

- 2021 Application Filing Year
- F21V Class
- 2827 Applications Filed
- 1898 Patents Issued To-Date
- 67.14 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Alkhimenko, Stepan | Jena, DE | 5 | 24 |
# of filed Patents : 5 Total Citations : 24 | |||
Klippstein, Markus | Jena, DE | 41 | 292 |
# of filed Patents : 41 Total Citations : 292 | |||
Nari, Ambrose Peter | Jena, DE | 8 | 26 |
# of filed Patents : 8 Total Citations : 26 | |||
Schroeter, Uwe | Dornburg-Camburg, DE | 9 | 37 |
# of filed Patents : 9 Total Citations : 37 | |||
Schwarz, Juergen | Apolda, DE | 18 | 158 |
# of filed Patents : 18 Total Citations : 158 |
Cited Art Landscape
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Patent Citation Ranking
- 0 Citation Count
- F21V Class
- 0 % this patent is cited more than
- 2 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Feb 15, 2027 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Feb 15, 2031 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 15, 2035 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
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May 02, 2023 | I | Issuance | |
May 25, 2021 | FEPP | FEE PAYMENT PROCEDURE | free format text: ENTITY STATUS SET TO SMALL (ORIGINAL EVENT CODE: SMAL); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
May 21, 2021 | F | Filing | |
May 21, 2021 | FEPP | FEE PAYMENT PROCEDURE | free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
Feb 27, 2015 | PD | Priority Date |

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