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【OH-HW50】A brief introduction to the multifunctional site survey lamp
by：ALLTOP
2021-04-07
【OH-HW】A brief introduction to the multifunctional site survey lamp
Performance characteristics
、General lighting. This lamp can output a very uniform beam. Adjust the focal length of the lens to adjust the spot. The lamp body is equipped with a tripod special interface, which can fix the position of the lamp body, especially suitable for finding and taking pictures of potential fingerprints. Subtle traces of physical evidence.
, color separation inspection and color separation photography The material that forms the trace is different from the material that forms the background, and the reflectance of light of different colors will also be different. The difference in reflectivity of the two substances to white light is relatively small, but the difference in reflectivity of a certain color of light may be very large, making the contrast of the trace evidence under the colored light stronger than the contrast under the white light. For example, the light-blooded handprint on a blue background has very little contrast under white light. When irradiated with blue light, the fingerprint lines will appear black, the color will become darker, and the background will become bright; when irradiated with red light, the opposite situation will occur. The two kinds of colored light can achieve the purpose of enhancing the contrast. The light can output light beams of five colors, such as red, orange, yellow, green, and blue, and illuminate the evidence with different colors of output light, and you can observe a different contrast effect with white light.
、Excite fluorescence. Use fluorescent fingerprint powder to show latent fingerprints, and then use the blue light output from the lamp to illuminate the fingerprints, and you can see that the fingerprint lines emit strong fluorescence by directly observing. If you wear orange glasses to observe, the effect is better. , Use polarized light to suppress the dazzling spot on the surface of the guest. Attach a polarizer in front of the light output port, use the beam to obliquely project the latent fingerprint, and observe the fingerprint in the direction of the reflected light. If the light spot is dazzling and affects the observation effect, you can rotate the polarizer to change the polarization direction. In a certain polarization direction, the brightness of the light spot will be significantly reduced, making the fingerprint lines clearly visible. Attach a polarizer in front of the camera lens so that the camera lens is aligned with the fingerprint in the direction of the reflected light. Observe the fingerprint through the viewfinder. If the light spot is dazzling and affects the observation effect, you can rotate the polarizer to change the polarization direction. In the direction, the brightness of the light spot will be significantly reduced, making the fingerprint lines clearly visible. The conversion adapter can connect the фmm polarizer in front of the camera lens of various calibers.
、Power supply mode: battery or transformer can be connected to AC power to provide power
Technical parameters
Light type: DCV, W, OSRAM halogen lamp;
Light color temperature: K;
Lamp life: hours
Product configuration
Lamp body, battery, charger, transformer
Red filter, orange filter, yellow filter, green filter, blue filter
ф polarizing plate, ф-connecting circle, ф-connecting circle
ф polarizing film pieces, ф-connecting circle pieces
Battery connection wire root, aluminum alloy box
Quality Assurance
This product is strictly controlled in accordance with the ISO international quality management system standards to ensure that the product quality is higher than the national standard and fully meets the design requirements. From the date of purchase, any failure under normal use of the product will be maintained by the company for free.
Performance characteristics
、General lighting. This lamp can output a very uniform beam. Adjust the focal length of the lens to adjust the spot. The lamp body is equipped with a tripod special interface, which can fix the position of the lamp body, especially suitable for finding and taking pictures of potential fingerprints. Subtle traces of physical evidence.
, color separation inspection and color separation photography The material that forms the trace is different from the material that forms the background, and the reflectance of light of different colors will also be different. The difference in reflectivity of the two substances to white light is relatively small, but the difference in reflectivity of a certain color of light may be very large, making the contrast of the trace evidence under the colored light stronger than the contrast under the white light. For example, the light-blooded handprint on a blue background has very little contrast under white light. When irradiated with blue light, the fingerprint lines will appear black, the color will become darker, and the background will become bright; when irradiated with red light, the opposite situation will occur. The two kinds of colored light can achieve the purpose of enhancing the contrast. The light can output light beams of five colors, such as red, orange, yellow, green, and blue, and illuminate the evidence with different colors of output light, and you can observe a different contrast effect with white light.
、Excite fluorescence. Use fluorescent fingerprint powder to show latent fingerprints, and then use the blue light output from the lamp to illuminate the fingerprints, and you can see that the fingerprint lines emit strong fluorescence by directly observing. If you wear orange glasses to observe, the effect is better. , Use polarized light to suppress the dazzling spot on the surface of the guest. Attach a polarizer in front of the light output port, use the beam to obliquely project the latent fingerprint, and observe the fingerprint in the direction of the reflected light. If the light spot is dazzling and affects the observation effect, you can rotate the polarizer to change the polarization direction. In a certain polarization direction, the brightness of the light spot will be significantly reduced, making the fingerprint lines clearly visible. Attach a polarizer in front of the camera lens so that the camera lens is aligned with the fingerprint in the direction of the reflected light. Observe the fingerprint through the viewfinder. If the light spot is dazzling and affects the observation effect, you can rotate the polarizer to change the polarization direction. In the direction, the brightness of the light spot will be significantly reduced, making the fingerprint lines clearly visible. The conversion adapter can connect the фmm polarizer in front of the camera lens of various calibers.
、Power supply mode: battery or transformer can be connected to AC power to provide power
Technical parameters
Light type: DCV, W, OSRAM halogen lamp;
Light color temperature: K;
Lamp life: hours
Product configuration
Lamp body, battery, charger, transformer
Red filter, orange filter, yellow filter, green filter, blue filter
ф polarizing plate, ф-connecting circle, ф-connecting circle
ф polarizing film pieces, ф-connecting circle pieces
Battery connection wire root, aluminum alloy box
Quality Assurance
This product is strictly controlled in accordance with the ISO international quality management system standards to ensure that the product quality is higher than the national standard and fully meets the design requirements. From the date of purchase, any failure under normal use of the product will be maintained by the company for free.
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