OneBrief introduction In criminal technology to deal with all kinds of smooth objects on the potential finger print marks, usually using directional reflection lighting technology for extraction, the method is to use light sources, by repeatedly adjusting the light distance Brightness As well as the camera's far recent access to high contrast images, Da'i portable coaxial light directional reflector is composed of directional mirrors and surface light sources, simple and convenient operation can better use of directional reflection lighting technology in criminal technical work.
Second, the working principle: the background of the incident light directional reflection, reflected light all appear in the directional reflection direction, in other directions there is no reflection of light; In the direction of background directional reflection, the background reflects all the light into the lens, the fingerprint reflects light only a small part into the lens. The result of seeing through the lens is a dark tone of the fingerprint in a bright background.
Third, product functions:
- For taking pictures of potential fingerprints on a light smooth plane.
- Potential fingerprints can be photographed on level faces.
- You can take a picture of potential fingerprints on the vertical surface.
- The overlay effect of directional reflection photography and color separation photography can be achieved.
- Built-in lithium battery power for a wider range of applications.
Fourth, technical parameters
1, coaxial photographer host, built-in lithium battery, power display light, no polar dimming,
2, light source power 12W, standby time 1H
3, 5 40mm long aluminum light-shield, single-section light-shielding tube in a threaded way to connect the growth of 210mm long blackout. The hood is then threaded to connect the directional reflector, which allows you to take pictures of fingerprints on the vertical surface. The inner wall of the blackout is processed to eliminate reflected light, and the fingerprint contrast is not affected by the reflection.
4, red, orange, yellow, green, blue filter, can achieve directional reflection photography and color separation photography overlay effect.
5, equipped with a quick connector, can be docked to different models of lenses.
6, weight 0.7KG