Lumicera

Lumicera is a transparent ceramic material brand and trademark owned by Murata Manufacturing Co., Ltd. It refers to a family of dense, transparent polycrystalline ceramics developed to combine ceramic strength and electrical performance with optical transparency. The material originated in Murata's work on transparent polycrystalline ceramics, which the company first developed in February 2001. Its early technical context was dielectric resonator materials for microwave and millimeter-wave applications, where ceramic materials can provide useful electrical characteristics at high frequencies. Conventional ceramics are generally opaque because pores form at the junctions where individual grains meet. These pores scatter incident light and prevent the material from transmitting light clearly. Murata's development work focused on controlling the manufacturing process so that the ceramic would be dense and homogeneous, reducing internal scattering and improving transparency. The resulting material was described as having strong optical characteristics, high transmissivity, and a high refractive index without birefringence. The material was later refined for optical-lens use following recommendations from Casio. This work included improving the transmission of short-wavelength light and reducing internal pores that would otherwise lower transparency. Lumicera was subsequently used in some Casio Exilim digital cameras, where its higher refractive index and material strength enabled a reduction in lens profile of approximately 20 percent compared with a conventional design. This application positioned Lumicera as an enabling component material rather than as a consumer-facing product brand. Lumicera has optical transmission characteristics comparable to those of optical glass used in conventional camera lenses, while offering a substantially higher refractive index. The cited refractive index is nd = 2.08 at 587 nanometers, compared with approximately 1.5 to 1.85 for optical glass. The combination of transparency, high refractive index, and strength can support more compact optical systems. Lumicera is also described as transparent at wavelengths up to 10 micrometers, extending its potential usefulness to instruments operating in the mid-infrared spectrum. The Lumicera Z variant is described as a barium-oxide-based material that does not contain environmentally hazardous substances such as lead. The available reference material does not establish a complete commercial product catalog, current production status, headquarters for the brand, or a standalone corporate organization. Lumicera is best understood as a Murata materials trademark used in specialized technical applications, including optical components and high-frequency electronic materials.

Lumicera's history is part of Murata Manufacturing's development of advanced ceramic materials rather than the history of an independently incorporated consumer brand. Murata first developed transparent polycrystalline ceramics in February 2001. The initial technical setting was dielectric resonator materials used in microwave and millimeter-wave technologies. These materials were valued for their electrical properties, while the transparent ceramic development added optical functionality that conventional opaque ceramics normally lack. The central manufacturing challenge was the cause of opacity in ordinary ceramics. Pores can form at triple points where grains intersect, and these pores scatter incident light. Murata therefore optimized the production process to create a denser and more homogeneous ceramic structure. This process-oriented approach improved light transmission while retaining the characteristic strength and electrical behavior associated with ceramic materials. The resulting material was also described as having a high refractive index and optical performance without birefringence. The application focus later expanded toward digital-camera optics. Following recommendations from Casio, Murata refined the material for use in optical lenses. The refinement involved improving transmission at shorter wavelengths and reducing residual pores that could diminish transparency. Lumicera was used in some Casio Exilim cameras, where the material's optical properties enabled an approximately 20 percent reduction in lens profile. This use illustrates the brand's role as a component technology embedded in another company's finished product. Lumicera's reported refractive index is nd = 2.08 at 587 nanometers, higher than the cited range for common optical glass. Its combination of optical transmission and strength made it suitable for compact optical designs. The material is also reported to transmit light up to 10 micrometers, giving it relevance to mid-infrared instruments in addition to visible-light optics. Lumicera Z is described as a barium-oxide-based variant that excludes environmentally hazardous substances including lead. The available material identifies Lumicera as a Murata trademark but does not provide a detailed chronology of subsequent product generations, licensing arrangements, current applications, or present commercial availability. Accordingly, the documented history is limited to the material's development, technical refinement, and cited camera application.

• 2001

  Development of transparent polycrystalline ceramics

  [1]Lumiceraen.wikipedia.org

  Murata Manufacturing first developed transparent polycrystalline ceramics in February 2001. The work was connected to ceramic dielectric resonator materials for microwave and millimeter-wave applications.

• Refinement for digital-camera optics

  [1]Lumiceraen.wikipedia.org

  Following recommendations from Casio, Murata refined the material to improve short-wavelength transmission and reduce internal pores for optical-lens use.

• Use in Casio Exilim cameras

  [1]Lumiceraen.wikipedia.org

  Lumicera was used in some Casio Exilim digital cameras, where its optical properties enabled an approximately 20 percent reduction in lens profile.

A high-performance transparent ceramic platform positioned around optical transparency, high refractive index, mechanical strength, dense microstructure, and suitability for specialized high-frequency and infrared applications.

• Transparent polycrystalline ceramic

  Lumicera

  The core Lumicera material is a dense, homogeneous transparent polycrystalline ceramic developed by Murata Manufacturing. It is designed to provide optical transmission alongside ceramic strength and electrical performance. The material is reported to have a refractive index of nd = 2.08 at 587 nanometers, above the cited range for conventional optical glass, and to transmit wavelengths up to 10 micrometers. Its documented uses include specialized optical lenses and dielectric materials for microwave and millimeter-wave applications.

• Barium-oxide-based transparent ceramic

  Lumicera Z

  Lumicera Z is described as a barium-oxide-based Lumicera material. The available description emphasizes that it does not contain environmentally hazardous materials such as lead. No further formulation details, launch date, product range, or current availability are established by the supplied reference.

• 2001

  Development of a transparent ceramic platformOther

  Background

  Murata's conventional ceramic expertise was associated with microwave and millimeter-wave dielectric materials, but ordinary ceramics were generally opaque because pores scattered light.

  Action taken

  Murata optimized the ceramic development process to produce a denser and more homogeneous material with improved transparency, while retaining useful electrical and mechanical properties.

  Aftermath

  The resulting Lumicera material created a platform for optical components as well as high-frequency and infrared applications.

  Source

• Adaptation of Lumicera for camera lensesProduct launch

  Background

  Casio recommended adapting the transparent ceramic for digital-camera optical systems.

  Action taken

  Murata refined short-wavelength transmission and reduced internal pores to improve the material's suitability for camera lenses.

  Aftermath

  The material was used in some Casio Exilim cameras and supported an approximately 20 percent reduction in lens profile.

  Source

1. 1Lumiceraen.wikipedia.org