Contact Us

Zinc Sulfide Lenses

  • Introduction

With the rapid development of military weaponry and correlative targeting and monitoring systems, zinc sulfide lenses are widely utilized in multi-spectral IR applications. Its relatively high transmittance through 3-5µm and 8-10µm makes zinc sulfide lenses an ideal choice for multi-spectral applications. Further, within the NIR and SWIR range, CLEARTRAN CVD ZnS can also be considered an indispensable alternative for optical designers


CLEARTRAN ZnS


Hyperion Optics uses CLEARTRAN ZnS multi-spectral material from ROHM&HAAS, typical material arrival lead time is 2 weeks. CLEARTRAN ZnS is modified by post-deposition hot isostatic process from CVD Zinc Sulfide, which contributes to transmittance from visible till far infrared ranges (0.35 to 14µm). Therefore, ZnS has become an imperative choice for IR lenses, laser windows and thermal imaging applications.


Hyperion ZnS Lenses

Hyperion Optics’ ZnS lenses are especially suitable for systems that involve visible camera, mid-wave and long-wave detectors, and further laser rangefinders to designate targets. Our CLEARTRAN ZnS windows also can be used for external windows for particular sensor applications.


ZnS is comparatively soft cubic crystal in manufacturing, meaning it is easily to leave scratches in grinding and polishing processes, which lead to a complicated quality control of both cosmetic and surface accuracy. Hyperion Optics invested heavily in ZnS component manufacturing capability improvement, enables our engineers master the optimal processing techniques in return helps Hyperion Optics to meet customers’ expectation without compromise. ZnS aspheric lenses are also available for your application; please refer toIR Aspheric Lenses for more information. ZnS Dome optics is also available in our Domecategory.


Our ZnS lenses are also available with AR coating according to specific requirement. Please take great care when handling, mounting and cleaning ZnS lenses, further, For your safety, please follow all proper precautions, including wearing gloves when handling these lenses and thoroughly washing your hands afterward.


Find out what we can help you with ZnS components today, we will be more than happy to evaluate your part and provide our professional suggestions from production perspective.



ZnS (CLEARTRAN) Refractive Index vs. Wavelength

Wavelength (µm)

Index

Wavelength (µm)

Index

Wavelength (µm)

Index

Wavelength (µm)

Index

0.4047

2.54515

0.6678

2.34033

1.5296

2.27191

9.000

2.21290

0.4358

2.48918

0.7065

2.33073

2.0581

2.26442

10.000

2.20084

0.4678

2.44915

0.7800

2.31669

3.000

2.25772

11.250

2.18317

0.4800

2.43691

0.7948

2.31438

3.500

2.25498

12.000

2.17101

0.5086

2.41279

0.8521

2.30659

4.000

2.25231

13.000

2.15252

0.5461

2.38838

0.8943

2.30183

4.500

2.24955



0.5876

2.36789

1.0140

2.29165

5.000

2.24661



0.6438

2.34731

1.1287

2.28485

8.000

2.22334




Zinc Sulfide

COMMERCIAL GRADE

FACTORY STANDARD

PRECISION GRADE

Diameter Tolerance(mm)

+0/-0.20

+0/-0.10

+0/-0.025

Center Thickness(mm)

±0.20

±0.15

±0.025

Radius (%)

±2%

±1.5%

±1%

Focal Length Tolerance (%)

<3%

<1.0%

<1.0%

Cosmetic(MIL-C-13830A)

80-50

60-40

40-20

Figure Tolerance in λ(Pow/irreg)

5 - 2

2 - 1/2

1 - 1/4

Centration (Arc min)

5'

3'

1'

Dia. To Thick Ratio

9~50:1

Coating (R% avg)

<2.0%@ VIS-SWIR , <1.5% @ 3~5µm or 8~12µm

Materials

CVD Zinc Sulfide and CLEARTRAN CVD ZnS



Related Content
  • Cold & Hot Mirror

    Cold & Hot Mirror

    February 17, 2017Heat mirrors and cold mirrors are special bandpass filters that can reflect infrared light and ultraviolet light and only allow visible light to pass through, also known as heat-absorbing filters, als...view
  • Parabolic Mirrors

    Parabolic Mirrors

    March 14, 2017Parabolic reflectors are used to collect energy from a distant source (for example sound waves or incoming star light). Since the principles of reflection are reversible, parabolic reflectors can also...view
  • Colored Glass Filter

    Colored Glass Filter

    February 17, 2017Tinted glass filter is a performance of the color of the optical filter, which absorbs undesired through the band of the way, to precisely select the range of light waves to pass.Tinted glass is a low...view