The Future of Metalens For Video Surveillance Cameras - MIT / UMass / Immervision

By Zach Segal, Published Sep 25, 2020, 09:42am EDT (Info+)

Panoramic cameras using 'fisheye' lens have become commonplace in video surveillance over the past decade. Now, researchers are working on 'metalenses' that aim to be thinner and less expensive.

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This gained mainstream attention recently when MIT announced 'a fisheye lens that’s completely flat'.

We spoke with the MIT scientists about this as well as Immervision, a major current panoramic lens provider, and Jacob Engleberg, a researcher at Hebrew University working on metalenses to better understand the potential for this technology.

Executive *******

*** ***/***** **** **** * **** of *********** **** (***** ***** ** controlled ******* ********* **** ********* ******* of *** ******* ******* ***** ** plastic) **** ** ******* **** * wavelength, ****** * ********. ********** ********* only **** **** ** * ****** band ** *****, ** ** ** unlikely ** **** * ***** ****** on *** ************ ******** *** *** time *****, ** **** ******* ******** cannot ******* *** ****** ** ******* light ********. ******* **** *** **** niche ****, **** ** ** ****** illuminated ** * ****** **** ** LED ** ***** ********** *** **** phones.

Flat ******* ****

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* **** **** *** *** ******** ******* * **** **** **** a ~ ***° ***. *** ****, Juejun **, ******* **********, *** ****, Peter **, ******** *****, ******** *******, Tian **, ******* **, *** ******** Zhang, *** ********* ****** ************'* ******* ************ ***** ** ****** *********** ** optics ***** ********** ******* ********* ** EnMats. **** **** ********, ***-**** ******** that *** ******* **** ***** *********** (or ***-**********), ** ****** *** ****. The **** ** **** *** ***-*****, unlike *******-******, ***** *** ********** *** comparatively *****, ************ ***** **** ** a **********, **** ***********, *** ********* be **** ********* **** *********** ****-*** lenses. *** **** **** ******* ***** in ******-**** ** ***********, ******** *** use. *** **** ********** ** **** that ***** ********* *** ************* ** any ******-**** **********, ********* ******* *****, but ********* ********** *** ****** ** light ******* ****** * ****** ****/***** would ***** ******:

** ******* ***** ** * *****-*** on ******** ********** (*** **** ***** is ******** ** **** ** *****) and *** ******** *********. * ********** explanation ** **** *** ********** *** theoretically ** ***** ** ***** ** optimizing ********** *** *** ****** **********; however *** ****** **** ******* **** this ***** ***** ** ********** *******, and ********* *** ********** *******.

***** ***** ***** ********* ***** ********:

Metalens *** ********** ******* *********

********** *** * **** ****** **** **** **** ************** ** diffract/bounce ***** ******* ** *********** ****** that *** ***** *** *** **********/******* of *****. **** *** ***-**********, ***** means **** *** ******* **** *** waves ** ***** **** *** ********* for, ** */*,***,***** ** * ********** ***** thick. **** *** * **** ** diffractive ****, ** **** **** ***** light ******* ***********/********** ** ***** **** obstacles. *********** ****** *** **********, ** the ******* ** ***** ** ** moves ******* ********* *********, *******.

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********************** ****** *** ******* **************, ***, ******* **** *** ****** on ** ** ***** (***,**** *** thickness ** ******) *********, *** ********** is ********.*********** *********** ********* *** *** ***** ******* ** create ***** ******* ****** ***** ******** use ************* ******** ****** ************ ** modify *****. *********** *********** ****** **** been ******** **** *********** *** *** more ****** **********.

Metalens ******* *** *******

******** ***** ** **** *** **** expensive *** ******* ******* ******. *********** lens ************ ***********, **** **** **** the ******* ********* ********* ** ********** for ************ **** ** *****. **** is ****** ** *** ********* *** inexpensive *************, ******* **** ****, *** lenses **** ***** **********. ********* **** metalenses *** ** **** ********* *** same ********** ** ***** *** **** low *** ******** *****, ** **** could ** ****-******** *** **** **** traditional ******.********** *** **** *********** ** ****** ********* ********** ******* increasing ********* ** ****** **** **********. This ** ******* ***** ********* **** individual ********** **** *** ***** ** the ****, ** *** ********** *** be ******** *** *** **** ******* adding ***** ****** ** *********. ********** lenses, *******, **** ** ***** ***** through ****, ** **** **** ** become ******* ** **** **** ********** to ****** ******** *** ******** **********. Immervision **** **** **** ***** ********** and ****** **** **** *** ***** factors ****** *** **** ** ****** so **** ***** ********** ****** **** to ******** ***** **** ********* **** alternatives.****, *** **** **** **** **********, the ******* **** ** ******** ** a ***** *********.*** ***/***** ************ **** ******** ********** ***** ***** true-fisheye ****** ** ****** ***** ******* to ** ***** **** ***********.

Metalens ****** ******* ** ****** ***********

******** ********* ** *** **** *********** ** **** ****** *** ******** wavelength. **** ****** **** ********* ********** or **** *********** ** ***** ******* of * ******** **********. ******** ********** Jacob ********* ** ****** ********** **** IPVM **** ******** *** **** ****** well **** **** *****, ~*/**** *** spectrum ** ******* ***** *** ******* best ** **** ******** *****.

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*** ***/***** **** **** **** **** broadening *** ******** **** ******** **** on *** * ******* *******:

***** ** * *********** (** ********** efficiency) ******* ***** *** *** ** acceptable ** *** ************.

********* **** **** **** **** ***** as *** ***** ** ***** * metalens ***** **** ** ********, **** light ** ********* ******** *** **** light ** *********** ******** ***** ******* image ******* ****** * ***** ********** and ****** ** *****. *** ***/***** team **** **** **** **** ******** that * ****-******* ***** ******** ***** have **% **********, ** **% ** the ***** ***** ****** *** ** captured ** ** *********** ******** *** degrade *** *****.

Experts ******** ** ******* ** ********

******* ******** ** ******* ******** ***** have ****-******* ************, ** *********** ** niche ***-*****, ** *** ***** **** traditional *********** ******.

*** ***/***** **** ************* ** * *** ** ********* for ********. **** **** **** **** are ********* *********** ********* ***** ********* to ******-**** ******* ***** *** *** exploring **** ***** ******-******** ** ****:

** ** *****, ** *** ******** focusing ** ******-**** ****-** ** ******* metalenses ***** *** ****** *** ******** devices **** ** ***** ******* ** smartphones ** ***** ********** (***** ******** three ****** *** *** *** ********* light). ****** ** *** ******** * convincing *********** *** ********* ****** (*** which *** ***** ********** ** *** an *****), ** *** *** ************ broadband ************ ** **** *****.

*********** **** **** **** ******* ******** devices **** ** ************ ********* ** the **** **** *****. **** **** IPVM *** **********, **** *** ******** shift **** ***** ** ******* ******, will ****** ********* *** ****** **** many ******. *********** ******** *** *********** from ***** ** **** ** ***** from **** ************* ****** ** ****** into ********** (******* ** *** ************ in ************* *********) **** ****** *** technology ********.

* **** **** *** ********** ****** ***** * ************ *** *** **** *********** *********** lenses **** **** ** *** **** narrow-bands ** ***** ** * ******** but **** ****** ***** *******. **** designed *********** *********** ******, ***** *** currently **** ********* ** ******* **** metalens, **** ************ ******* ***** ** metalens ** ***** ******* **** ******** uses:

****, ** **** **** *****-***** *********** lenses (****), **** ******** ******** *** exceed *** *********** ** **********

********* *** ********* ********* ** ******* ** ********, ***********,*** ********* *** **** ******* **** the ***/***** **** ** ***********. ********* and ********* **** ***** **** ******** have ********** **** *********** *********** ****** in **** ***** *** *** **** more **** *** *********** ******* ** their ******** ******* *** ********* ***************:

********** **** ******* ************ **** ** some ******** (*** *******, ****-********** ****-** applications7,9). ********** **** **** ******* ** freedom **** ****, ** ***** ************** come ** ********* *****.

*** ***** **** *** *** ***** metalens ***** ******* ***** *********** ****** but ***** ** **************:

** ******* **** ********** ********** **** make ** **** ********, **** *** appropriate *********** ***** ********** ************* **********. However, ** ** *** ***** **** will ******* *********** ******, ***** *** many ************ **** *** ********** *** more **** *********.

********* **** **** **** **** ***** he ******** ******** ********** ** ********* ready *** ******-********* ****, **** ** scenes *********** ** *** **** ** IR ***, ** **** *** ******* metalens *** ******* *** ******* ** refractive ****** ****** *** ******* ***** spectrum:

** *** ******* *** **** ** diffractive **** **** ***** **** (** comparable **** ********** ****) ******* **** the **** ******** ** ******* ***** in *** **** ******.

** ********, ******* *** ***** *** that ******** *********** **** ******** *********** suffered **** *** ******* *** **** this ***** ****** ** *** ******:

******** ****** **** ******* ********* ********** outside ** *****-****-********* ****. ********** ********** to **** *** ******* *** ******* power, ** **** *** *** ********* for ************ *******, *** **** ** work ** ********, ** ** **** wait *** *** **** *** ************ arrive.

*******

**** ** ** ********** *********** *** of *** *** *****, *** ** will ****** *** **** ** ****** on **** ************ ***-***** *** * while, ** ****. ********** ****** *** not ************* ********* *** ********** ********** continues ** ******. ** ********, ** is ******* ** ********** **** **** be **** ** ******* *** ****-******* broad-spectrum ******** ****** *** **** ************ use. *******, **** ***** ****** ************ available *** ***-***** ***** * ****** band ** ******** ** **********.

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Comments (3)

Very interesting! A peek into the future...

Agree
Disagree
Informative
Unhelpful
Funny

Zach, thank you for bringing more new tech out! That is definitely interesting and might have a potential, though a bit limited.

Agree: 2
Disagree
Informative
Unhelpful
Funny

Great work - thank you for this insight!

Agree: 1
Disagree
Informative
Unhelpful
Funny
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