Kowa’s Lightest Portable Slit Lamp! Only 620g

Hand-held Portable Slit Lamp, Lightweight (Weighs only 620 g)

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Kowa’s Lightest Portable Slit Lamp! (620g only)

Choose Your Colors - White, Green, Pink, Aqua Blue & Black

  • Lighter than the previous model
  • Sophisticated design
  • The lightest hand-held slit lamp*1, Longer operating time
  • the SL-19 weighs 620g and provides easy and versatile operation
  • with a choice of 10x and 16x magnifications and 3 slit widths* (0.1mm, 0.2mm, 0.8mm).
  • The SL-19 has a variable controlled LED light source from 200 to 20,000 Lux and has a 3-step background light as well as a 3-step blue illumination light.
  • The LED light source provides a much whiter light than ordinary halogen light sources found on traditional instruments.
  • The SL-19 is compact and portable making it ideal for field evaluations, pediatrics, and patients not able to be imaged by a traditional slit lamp.
  • The SL-19 is especially useful in emergency rooms where patient mobility is a challenge, or when switching between consultancy rooms is necessary.
  • Offering cordless operation, the SL-19 is powered by (3) AA rechargeable or dry cell batteries to provide long lasting, continuous operation of the bright LED lamp.

Features and Benefits

Sophisticated design
  • Smooth and roundish design aimed to reduce stress and mental strain of patients.
  • Easy fitting with trigger grip and optimized grip diameter.
The lightest hand-held slit lamp*1
  • By incorporating glass fiber reinforced resin, the weight was reduced. The lighter device minimizes operator fatigue.
New functions
  • Background illumination simultaneously usable with slit lamp.(fig.1)
  • Blue light illumination button conveniently located on handle.(fig.2)
  • Continuously variable slit length. (1.5-12 mm)


Longer operating time
  • Owing to an energy saving system design, the SL-19 has a continuous illumination time at maximum intensity for 360 minutes. 
  • When used with 3 x A A Ni-MH batteries. (1,900 mAh)
Optional accessory
  • Head rest(fig.3)


Available in 5 Colors*2

*1 In KOWA SL series.
*2 The availability of colors and optional accessory varies among countries and regions. Please contact your local Kowa representative or distributor.


Microscope  Angle of convergence  13° 
Magnification  10X and 16X 
Working distance  Approx. 100 mm (at 10X magnification)
Approx. 80 mm (at 16X magnification) 
Practical field of view  ⌀15 mm (at 10X magnification)
⌀10 mm (at 16X magnification) 
Interpupillary adjustment range  55 to 72 mm 
Diopter adjustment range  -8 to +5 D 
Slit Projector  Slit width / Shape  0.1, 0.2, 0.8 mm / Spots (circular) 
Slit length  1, 5, 12 mm: fixed, and 1.5 to 12 mm: continuously variable 
Spot size  ⌀1, ⌀5, ⌀12 mm and shapes of ellipse 
Light intensity adjustment  200 to 20,000 lux: continuously variable 
Slit's illuminating angle  60° : horizontal circumference 
Light source  White LED 
Background illumination light  White LED : 3 step switching 
Blue illumination light  Blue LED : 3 step switching 
Power Supply  Input : DC3.0 - 4.8 V
Power consumption : Up to 3.6 VA 
Power Supply  Input: DC4.8 to 6.4V Power Consumption: 3.6 to 4.5VA 
Dimensions / Weight  107 (W)×197 (D)×238 (H) mm / 620 g (No batteries)

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