Plastic Precision Molds

Molds guaranteed from the mold up to the final product stage.

Molds guaranteed from the mold up to the final product stage.

Ricoh Optical manufactures a wide range of products in different fields, such equipments are office electonics use, projectors, medicine, communication. From mold design of optical elements to actual production.
In recent years, we have also engaged in manufacturing molds for plastic lens and lenses with a greater bend surface range.
The technical knowledge we have amassed up to now is not applied only to the manufacture of metal molds, but also employed to satisfy our customers in all sorts of ways based on our motto of "MOLDS GUARANTEED FROM THE MOLD UP TO THE FINAL PRODUCT STAGE."
We are also available for consultations regarding taking customer mold orders or engaging in joint development work, etc.

Main metal mold processing

Main metal mold processing

Taking lenses, finder lenses, projection lens for projector, array lenses, optical equipment f-theta lenses, barrel toroidal lenses (BTL)

Scope of machining shapes and precision of optical elements and metal frames

Machining Shapes

Flat, spherical, aspherical, cylindrical, toroidal, barrel toroidal, fine triangular (low pass filter) prisms, free-curved surface, etc.

Shape Precision

*0.5um - 3um
(*Shape precision is subject to machining shape and optical materials. Please consult us to cater your needs.)

Machining Figures

Lens by cutting 0.3um/20mm dia.
Prism by cutting in triangle shape, height 0.6um +- 0.06um
Metal frame 0.08um/50mm dia
Metal frame 0.5um/200mm dia
Metal frame for unusual-shaped cylinder lens, 0.25um/120mm
Metal frame for barrel-toroidal shaped lens, 0.5um/200m

Surface precision

Free-Curved surface f-theta metal frame
For scanning direction 0.2um
For processing direction 0.1um/220mm
*Ra=0.006um (*Please consult as needed on shapes and material, etc.)

Machinable Material

For Metal dies * Metal mold : Used in molding optical elements

By Cutting : Non-ferrous material such as Ni, Cu, Al etc.
By Grinding/polishing : Ferrous type materials such as Stavax, HIPM-1

For Cutting lens

Plastics such as acrylic, polycarbonate, zeonex

Secondary Machining

Vapor deposition including deposition of antireflection coating and AI reflective film

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