Transmission Meter for Lens and Phone Cover Test
In the mobile phone cover industry, the LS108D mobile Lens transmission meter is used to test the transmittance of the distance and position sensing holes. The LS117 optical density meter is used to test the optical density of the screen printing ink, which perfectly solves the problem of the optical performance test of the mobile phone cover.
On the cover of a mobile phone, there will be a camera hole and a distance sensing hole, and there will be silk screen printing ink on the periphery or the upper and lower ends.
The camera hole and distance sensing hole, which is what we call the IR hole. It requires a strong blocking ability for visible light, and it is highly transparent to infrared light. In the industry, it is basically based on the transmittance of 850nm and 940nm. The transmittance of the measured IR hole can be tested with the Linshang LS108D lens transmission meter. The screen printing ink around the cover plate mainly plays the role of shading, and the optical density is tested by the Linshang LS117 optical density meter to determine the shading effect of the screen printing ink.
Why we say the Linshang LS108D lens transmission meter and LS117 optical density meter are perfect partners in the mobile phone cover industry?
First, the transmittance of the camera hole and the IR transmittance of the position sensing hole on the mobile phone cover needs to be tested, while the mobile phone lens transmission meter LS108D can test the transmittance of the three-way light source of 550 nm, 850 nm, and 940 nm, respectively. The IR transmittance can solve the customer's needs regardless of whether the customer is referring to the 850nm or 940nm standard. The 0.5mm ultra-small test aperture is widely used.
Secondly, the screen printing ink is basically sprayed around the cover of the mobile phone to play the role of shading which has high requirements for the visible light. For better mobile phone, the transmittance of the screen printing ink is required to be less than 0.01%. The ordinary transmission meter can't meet the test requirements at all. The Linshang LS117 optical density meter can test the light transmittance and optical density at the same time, and the transmittance resolution can reach 0.0005%, and the optical density is the logarithm of the reciprocal of the transmittance. The higher the shading ability of the material, the higher the optical density. The LS117 has a range of up to 0 - 6 OD and is extremely accurate and ensures national measurement.
The combination of the LS108D mobile phone lens transmission meter and the LS117 optical density meter perfectly solves the test problem of the optical performance of the mobile phone cover. They are the perfect partners for the optical test of the mobile phone cover industry.
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