Physics Lab Equipment

LLD-1 VGA Video Camera with Length Measurement Function

LLD-1 VGA Video Camera with Length Measurement Function


  • No computer and software needed

  • 1.3 megapixel, color, high quality CMOS, resolution 1280 x 1024, clarity > 650 TV lines

  • Up to 8 crosshair markers movable to any location on screen

  • Length measurement in both H & V directions after calibration

  • High measurement accuracy up to sub-micron

  • Live VGA video output to display, projector or digital TV

  • Easy-to-use by menu operation using keypad with clear & stable image


  • Academic teaching

  • Microscopic amplification systems

  • QC/QA in micro IC assembly

  • PCB and SMT production

  • Industrial precision positioning

  • Medical and scientific

  • Jewelry appraisal

This camera can be adopted to fulfill the function of a direct measurement microscope in our optics experiment kits where direct measurement microscope or its eyepiece is used for length measurement. Furthermore, the acquired video can be projected onto a large screen for group watch. 


  • Install a proper camera lens onto the CS mount of the camera

  • Connect the VGA OUT terminal to a VGA display using a VGA cable

  • Plug the 5V DC AC adaptor into the 5V DC IN socket of the camera

Menu Operation

  • Press MENU once, main menu pops up; press MENU again, main menu closes.

  • Press ↑/↓to highlight menu, then press → to select menu.

  • If there is a submenu, press ↑/↓ to highlight submenu, then press ←/→ to change value of the selected submenu.

  • Select Exit to return to main menu.

Method of Measurement 

  • Place the sample under test on the specimen stage, while keeping the calibration of the system unchanged.

  • Through keys SEL,↑,↓,← and → to move lines to measure distance between a pair of lines in H or V direction.

  • Screen freeze: press POWER for one second, screen will freeze for more stable measurements.

  • Press POWER one second again to release freeze function.

  • Press POWER about 3 seconds to turn off power of the camera.


Sensor1.3 megapixel, color, ¼” CMOS
Effective pixels1280 (H) x 1024 (V), pixel size 2.8 μm x 2.8 μm
Data8 bits
Frame rate15 frames/s progressive scan, electronic shutter
Clarity> 650 TV lines
Dynamic range> 63 dB
S/N44 dB
Sensitivity1 V/lux-sec (at 550 nm)
Exposure10 ms ~ 60 ms, auto/manual
White balanceauto
Lens mountCS/C
Video outputVGA, resolution selectable1024 x 768, 1280 x 1024

Menu function

brightness, contrast, sharpness, saturation, blue & red offset, auto exposure
H-mirror, V-mirror, negative, crosshair number, length calibration
Working temperature0~60 °C
Power supply5 VDC ± 10%, 400 mA
Dimensions50 x 50 x 90 (mm)
Packagecamera unit (CS), 5 VDC adapter, keypad, manual

   LEOK-31.jpg Newton's ring experiment

LEOI-21.jpg Michelson interferometer          Fresnel Bi-prism.jpg

Biprism interference experiment

Lloyd's mirror interference.JPG

Lloyd's mirror interference

Single slit diffraction.JPG

Single slit diffraction

Mcroscopic pic.jpg

Microscopic PCB inspection


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