【Externally controllable】 Luminance measurement of the light-emitting surface Luminance meter LC-5
LC-5
Measuring from weak luminescence to high brightness of phosphors - Luminance meter for diffuse surface light sources.
This device is a luminance meter primarily used to measure the brightness of surface. Measurements are taken by placing the light-receiving part against the lighting surface. Luminance measurement and unit switching can be externally controlled via UART through a virtual COM port. As a standard model, the delivery time is within one week. The backlight display and measurement result hold function improve work efficiency. It also supports external communication and data output (USB compliant). Additionally, it can be powered by batteries (two AA batteries) for portability or an AC adapter. It is a compact and lightweight measuring instrument weighing about 300 grams. It can be used with our luminance box for auto-calibration (self-calibration). Furthermore, it has the capability to correct differences compared to other manufacturers' luminance meters.
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basic information
Specifications Measurement Range: LV -4.00~19.00 (K: 1.3, ISO 100) K value 1.0~2.0 cd/m² 0.00875~73370 (measurable from 8 mcd/m²) rlx 0.02448~230500 Measurement Accuracy: ±3% (at 20°C, ±5°) Display Functions: Data Hold (holds displayed value) Backlight (5 seconds or continuous lighting) AUTO POWER OFF (approximately 5 minutes) *Does not operate when using AC adapter Communication interface: USB communication (data output, mode switching, various settings possible) Auto calibration function compatible with Tsubosaka's light source box (for some products only, please consult us) Light Receiving Element: 10Φ Si photodiode, sensitivity wavelength range 400~700nm Power Supply: Two AA batteries, AC adapter Dimensions and Weight: 141 (W) × 34.5 (H) × 81 (D) mm, approximately 310g (230g without silicone cover)
Price range
P3
Delivery Time
P3
※The delivery date may vary depending on the situation, so please feel free to contact us.
Applications/Examples of results
It is widely utilized across diverse fields—from adjusting and calibrating light source devices to conducting inspections on production lines and performing precision measurements in development departments. They are also employed in the mobile phone and smartphone industries, supporting high-quality manufacturing and innovation.
Line up（1）
| Model number | overview |
|---|---|
| LC-100 | A simplified and budget-friendly version of the LC-5. Currently available for sale on Amazon. |
Company information
For more than half a century, Tsubosaka Electric has specialized in the development and manufacturing of precision inspection equipment for cameras, serving clients both in Japan and internationally. Our measuring instruments have played a vital role in enhancing camera quality since the days of film cameras, supporting camera manufacturers in their production and inspection processes. We offer a comprehensive lineup of inspection and measurement solutions, including: evaluation stable light sources (luminance boxes), shutter testers, electronic collimators, aperture area meters, lens testers, and strobe testers, etc. From hardware design to software development, our products are developed entirely in-house to ensure seamless integration and top-tier performance. Recognized for our manufacturing excellence, we are ISO 9001 certified and trusted by major camera manufacturers worldwide. Our expertise also extends beyond the camera industry, and we also can develop optical measuring instrument for advanced medical devices and autonomous driving where they use proprietary optical sensing technology. Additionally, our contrast testers used to measure the contrast values of resist inks in LCD color filters that are contributing to the advancement of high-definition and high-contrast TVs and monitors across the globe. At Tsubosaka Electric, we pride ourselves on flexibility and innovation. We offer a wide range of customizable measurement solutions and are happy to accommodate special orders tailored to your specific requirements. Please feel free to consult with us.