RHK Japan Inc. (Agent of NTKJ)
|Tel.:||+81 3 6407 1831|
|Fax:||+81 3 6407 1832|
|Fresnel lenses||S E||Shanghai Optics|
|lenses||S E||Artifex Engineering, DPM Photonics, Edmund Optics, EKSMA OPTICS, Intrinsic Crystal Technology, Knight Optical, Shanghai Optics|
|prisms||S E||Artifex Engineering, EKSMA OPTICS, G&H, Intrinsic Crystal Technology, Knight Optical, Shanghai Optics|
Column "To": S = list of suppliers for that product, E = encyclopedia article.
Third column: alternative suppliers are suppliers also offering such products while having an ad package. On their own company profile pages, the right column of the table contains their product descriptions instead of alternative suppliers.