Join us at Photonics West 2021, from March 6th-11th at Digital Forum online!

NTKJ Co., Ltd. are pleased to announce that NTKJ’s president and a sales engineer will be attending Photonics West 2021 Digital Forum on line.

At the exhibition, you will be able to receive information regarding NTKJ’s;
# UV-SWIR lenses
# Diffractive Optics
# Elliptical Fresnel lens to make freeform optics thinner
# Germanium Fresnel lens for IR application
# Fresnel lens
# Lenticular lens
# Lens arrays
# Made-to-order plastic lenses
# Any enquiries regarding our lens manufacturing services are welcome


📖 Our president Koichi Sato’s co-authored publication related to aerial display will be on sale (written in Japanese) 📚

[For touchless / non-contact operation / inspection Design points and latest trends]

★ with non-contact technology that is expected to spread in the corona era. Each expert who leads the research and development will explain a wide range of topics such as touchless operation and non-contact sensing key technology, design and development of related parts, and development of killer applications! —-Preface (partial excerpt)

Currently, it is required to adapt to the new normal brought about by the new coronavirus in various aspects. In the biotechnology field, research and development on measures such as testing, treatment, and vaccination against COVID-19 are proceeding at a rapid pace, but what can be done in the non-biotechnology field? ——- [Applications are being accepted for early discount] ↓ Please read if you are interested 👀

Holiday Notice

Year-end 2020 and New Year holiday 2021 at NTKJ

Nihon Tokushu Kogaku Jushi Co., Ltd. (NTKJ) will be in Year-end and New Year holiday from 29th until 4th of January. Although we are still accepting enquiries via our website during this period, replies will be after 5th January.

DOCOMO Licenses Lens Production for VR Headset to NTKJ – Smartphone-paired headset will enable extra-immersive VR video experiences –

TOKYO, JAPAN, November 9, 2020—NTT DOCOMO, INC. and Nihon Tokushu Kogaku Jushi Co., Ltd. (NTKJ) announced today that they have reached a licensing agreement to manufacture advanced lenses for DOCOMO’s virtual reality (VR) headset, which pairs with smartphones for ultra-wide-angle VR experiences. The agreement includes the use of DOCOMO’s patents and design documents for the manufacture and sale of lenses that NTKJ will begin providing to headset manufacturers on November 16. Thereafter, the manufacturers will collaborate with NTKJ to produce end-user headsets (goggles) based on DOCOMO’s basic designs.

Scheme of licensed manufacture and sale of lenses

Existing low-end VR headsets coupled with smartphones only achieve narrow viewing angles, causing users to feel as if they are looking through a hole. In the new VR headset, however, high-magnification Fresnel lenses surround ordinary-magnification aspherical lenses to create a wider field of vision. Objects appearing in the center are in focus and peripheral images are somewhat blurred, similar to human vision. Incorporating two types of lenses with different levels of magnification makes VR images appear highly realistic, resulting in extra-immersive VR experiences.

Visitors to the 7th UV Fair of Science Photonics Fair 2020 will be able to view the ultra-wide-angle VR headset at NTKJ’s booth. The event will take place in the Tokyo Metropolitan Industrial Trade Center (Hamamatsucho-Kan) from November 11 to 13.

Event details can be viewed at

Going forward, DOCOMO and NTKJ will continue to collaborate in the manufacture and sale of lenses for the new ultra-wide-angle VR headset, enabling people to enjoy all-new immersive 5G experiences, including safely at home in the COVID-19 era.

For further information, please contact:


Mr. Takuya Ori or Ms. Mimoe Terasaki
Public Relations Department
Tel: +81 (0)3 5156 1366
Fax: +81 (0)3 5501 3408

NTKJ Co., Ltd. (Nihon Tokushu Kogaku Jushi)
In charge of VR goggles lens


NTT DOCOMO, Japan’s leading mobile operator with over 80 million subscriptions, is one of the world’s foremost contributors to 3G, 4G and 5G mobile network technologies. Beyond core communications services, DOCOMO is challenging new frontiers in collaboration with a growing number of entities (“+d” partners), creating exciting and convenient value-added services that change the way people live and work. Under a medium-term plan toward 2020 and beyond, DOCOMO is pioneering a leading-edge 5G network to facilitate innovative services that will amaze and inspire customers beyond their expectations. DOCOMO is listed on the Tokyo Stock Exchange (9437).

About NTKJ

NTKJ, the Japan-based lens manufacturer, specializes in ultra-precision machining, heat compression molding, and large lens manufacturing. NTKJ utilizes pico-meter resolution of 5+2 axis machine to manufacture ultra-precision optics. NTKJ’s facility and 46-year-experience enables to manufacture VR lenses, Germanium Fresnel, MLA, DOE, Freeform lenses and mirrors, elliptical Fresnel and NTKJ’s standard lenses. NTKJ boosts innovative optics R&D for industries such as imaging, lighting, sensing, medical and aerospace.

Additional Solar concentrator Fresnel lenses “CF600-BL/3T” & “CF600-BL/4T” on our product list

The long-awaited 3mm and 4mm thicknesses have been added to the CF600-BL as new series!!

Both CF600-BL/3T & CF600-BL/4T sizes are larger than CF600-BL and it will be prepared as standard products.

The specifications are as follows.
We look forward to receiving many inquiries!!

 Product No.: CF600-BL/3T
 Lens type: Fresnel lens (B type)
 Focal length: 600mm
 Pitch: 0.5mm
 Aperture (φ): 600mm
 Size: 600mmx600mm
 Thickness: 3mm

 Product No.: CF600-BL/4T
 Lens type: Fresnel lens (B type)
 Focal length: 600mm
 Pitch: 0.5mm
 Aperture (φ): 600mm
 Size: 600mmx600mm
 Thickness: 4mm
You are encouraged to give it a try! ?