Optical device, particularly for tuning the focal length of a lens of the device by means of optical feedback
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United States of America Patent
Stats
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Jun 16, 2020
Grant Date -
May 11, 2017
app pub date -
Jun 3, 2015
filing date -
Jun 3, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to an optical device, comprising: a lens having an adjustable focal length. According to the invention, a light source which is configured to emit light that is affected by said lens and impinges on at least a first photosensitive element, which is designed to generate a first output signal corresponding to the intensity of light impinging on it, wherein the first photosensitive element is configured to measure only a portion of the intensity distribution of said emitted light, and wherein the light source, the lens and the first photosensitive element are configured such that a change of the focal length of said lens changes the intensity distribution of the emitted light that impinges on the first photosensitive element, so that each focal length of the lens is associated to a specific first output signal generated by the first photosensitive element.
First Claim
Other Claims data not available
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International Classification(s)
- 2015 Application Filing Year
- G02B Class
- 9095 Applications Filed
- 7457 Patents Issued To-Date
- 82 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G02B Class
- 0 % this patent is cited more than
- 5 Age
Maintenance Fees
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|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 16, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 16, 2031 |
