Features

Thin dielectric films with different refractive indices are coated in multiple layers, and light interference is used to allow the selection of transmission or reflection of light from a light source at the desired wavelengths.

The number of layers of thin dielectric film coated can be from a few to several hundred, which allows various characteristics to be realized.
The shape of the substrate to be coated can be anything from flat to a parabolic mirror.

Applications

Lamp reflectors.
This mirror can be applied to various fields, including laser processing machines.

Example characteristics

Reflecting a reference light wavelength of 950 nm, it can allow high transmittance of a dominant laser light source wavelength of 1,064 nm.
This is a short-pass dichroic mirror not affected by the P- and S-polarized light from a light source.
It is characterized by enabling high reflection of P-polarized light in the reflection band and high transmittance of S-polarized light in the transmission band.
This is an example of allowing total transmission of a dominant laser light source wavelength of 1,064 nm and total reflection of higher harmonics.
It demonstrates its effects in the effective use of laser light source wavelength.

Features

This is an optical component that separates transmitted light and reflected light at the desired ratio. It is also possible to separate P-polarized and S-polarized light from incident light (PBS: Polarizing Beam Splitter) and to produce a type with less polarization dependence (N-PBS: Non-Polarizing Beam Splitter).

Applications

Laser processing machines, measuring instrument, semiconductor exposure apparatus, FPD exposure apparatus and cameras

Example characteristics

PBS(Polarization Beam Splitter)

Cube type
Two rectangular prisms are bonded together and a dielectric multilayer film is applied to the slope of one prism to separate the P- and S-polarized components. It separates a single wavelength of the near-infrared region from the ultraviolet region, and the P- and S-polarized components of the visible region.
We design the wavelength, angle of incidence and extinction ratio to meet customer requirements. We also accept orders for optical contact lenses.

Plate type
By applying a dielectric multilayer film onto a substrate, it is possible to separate the P- and S-polarized components of a single wavelength or narrow range of wavelengths within the wavelength range from the ultraviolet region to the near infrared region. We design the wavelength, angle of incidence and extinction ratio to meet customer requirements. It has excellent light and heat resistance and is suitable for laser applications.

BS(Beam Splitter)

By applying a dielectric multilayer film onto a substrate, it is possible to separate specific wavelengths in two directions at the desired ratio within the wavelength range from the ultraviolet region to the infrared region.
We design the wavelength, angle of incidence and extinction ratio to meet customer requirements.

Features

This is known generally as AR (anti-reflection).
It is a coating process in which a thin dielectric film is formed on the surface of a substrate in a single layer or multiple layers, and the reflectivity of the surface is reduced by light interference.

This increases the transmittance of the substrate, eliminates reflection on the surface and prevents ghosting.
The band of the anti-reflection effect can be selected by manipulating the thickness of the film, the number of layers and the combination of materials.

A wide range of wavelengths is available, from ultraviolet to infrared.
And a wide range of materials can be coated, including glass and infrared crystal materials.

Coating substrates

Provides coatings on glass, resin, quartz, sapphire, ruby, YAG, Si, Ge, ZnSe, ZnS, etc. and other optical crystals.

Applications

Various cover glasses, prevention of ghosting on assembled lenses, sensor windows, etc.

Example applications include coating on curved lens surfaces, fiber end surfaces, cover glass surfaces, and crystal materials (CaF2, Si, Zn, Se).

Example characteristics

Various cover glasses, prevention of ghosting on assembled lenses, sensor windows, etc.

Example applications include coating on curved lens surfaces, fiber end surfaces, cover glass surfaces, and crystal materials (CaF2, Si, Zn, Se).

AR coating with an average reflectance of 0.1% or less in the visible light range (420 to 680 nm).
An AR coating with a reflectance of 0.01% or less at near-infrared wavelengths (1550nm).
It is a wide AR coating that considers the wavelength separation of P and S polarized light at an incident angle of 45 degrees.
This is a narrow AR coating that considers the wavelength separation of P and S polarized light at an incident angle of 45 degrees.