M

When you change the wavelength

easuring
We’ll conclude our discussion of electronics with“measuring light.”
Here we will discuss a somewhat different specialty ofUshio’s than those mentioned previously, all of which
involve putting light to work in one form or another.

For example, consider the infrared light used to treat skin conditions, which has a wavelengthof 308 nm. Increasing the wavelength might result in side effects that cause the patient to suffer.
Making the intensity too great might harm the skin, but making it too low might delay treatment.
The same applies to manufacture of semiconductors and LCD panels, to printing and cultivation ofplants, and a variety of other fields. As uses of light’s energy proliferate, so do the variety offunctions and applications available from specific wavelengths. Consequently, differences inwavelength and intensity--the “quality” of light-- have become important variables in the cost of
manufacture and the quality of manufactured products.

Compact UV intensity meter UV integrating photometer/
UV intensity meter
UIT-θ365
UIT Series

Ushio’s “light ruler”
During the 1970s, semiconductors were sometimes referred to as the “bread and butter” ofJapanese industry. Ushio originally developed its illuminance meters for use in controlling
ultraviolet exposure during semiconductor manufacturing. As the market for illuminance meters
expanded along with that for lamps, they became the de facto standard in the field of lightmeasurement. But times change, and in certain sectors of industry, LEDs are starting to replacelamps as light sources. The problem is, there are still great variations in the light produced byLEDs used by industry. In consequence, there has been a growing demand in the market formeans of accurately measuring light from a variety of light sources.

Spectral emission
intensity meter
USR Series

Spectral reflectance meter
URE Series

Heeding this call, Ushio has become the industry leader in the development of relevant
standards. Responding to client requests, it has established a traceability system for calibration toassure absolute values together with ongoing maintenance management.
We have entered an age in which the illuminance meter has become a guide to light. Ushio's
development of “rulers for light” are ongoing, and we will continue as the leader in this market.

“Measuring light” Various Examples
Artificial satellites● Wavelength management forsolar simulators/reflectivity
management for components

Outdoor signage● Intensity and wavelength

Security cameras

management for UV printing● Wavelength control of lightsources for security cameras

Solar panels(photovoltaic power generation)● Wavelength control for lightsources used to verify output
characteristics

Light has afascinating
future!

Flowers, vegetables, fruit

Air purifiers
Air conditioners
Doorknobs● Illuminance control duringphotocatalyst (titaniumoxide) reaction● Wavelength control during
development of new
photocatalysts

LED illumination(fluorescent lamps)● Illuminance andreflectance control
during UV hardening ofdiffusion film

● Illuminance and wavelength control
for lighting that regulates bloom
timing (electric lighting)● Illuminance and wavelength controlof lighting (auxiliary light) that
promotes photosynthesis (increases
yield or sugar content)

Automobiles (hybrids & electrics)● Illuminance control during lithium ion
secondary battery separator sealing● Illuminance and reflectance control duringUV hardening of anti-reflection film for car
navigation systems and diffusion film forLEDs (headlights, tail lights)● Illuminance control during UV bonding ofelectronic control units

Flat-screen television● Illuminance andwavelength control
during UV hardening of
LCD panels● Illuminance andreflectance control
during UV hardening of
optical film

Blu-ray Disc player

Smartphones & tablet PCs● Illuminance control during UVbonding of pickups● Illuminance control UV bondingof hard disk drives● Illuminance control during UV hardeningof touch panels● Illuminance and reflectance control
during UV hardening of optical film

UV protective parasolsSunscreen● Wavelength control during
product testing (for UV protection)

UV protective clothing● Wavelength control during
product testing (for UVprotection)

Water● Illuminance control during
UV water purification