Self-heating temperature control system for palm/finger print instrument
A technology of temperature control system and fingerprint sensor, applied in auxiliary controller with auxiliary heating device, temperature control by electric method, etc., can solve the problems of increasing system volume, different refractive index of glass, and reducing the effect of collecting images.
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[0009] Example 1
[0010] Such as figure 2 As shown, the self-heating temperature control fingerprint device applying the system of the present invention includes a collection prism (that is, temperature control optical element 1), a temperature control electronic component (2), a lens (that is, imaging optical element group 3), and a connector (4), Image receiver (5); the collection prism (1) includes a base layer (1.1), a conductive film layer (1.2), and a protective layer (1.3), wherein the base layer (1.1) and the protective layer (1.2) are both K9 glass , The conductive film layer (1.2) is an indium tin oxide film layer directly plated on the base layer (1.1), the protective layer (1.3) and the base layer (1.1) coated with the conductive film layer (1.2) are combined into one by optical glue The whole; the connecting piece (4) plays the role of fixing the image receiver (5) and adjusting the distance between the lens (3) and the image receiver (5); when the system is workin...
Example Embodiment
[0011] Example 2
[0012] Such as image 3 As shown, the self-heating temperature control palmprint instrument applying the system of the present invention includes a light source (1) a collecting prism (that is, a temperature control optical element 2), a temperature control electronic element (3), a mirror one (4), and a mirror two ( 5), lens (6), connector (7), image receiver (8); the light source (1) is a 550nm LED light source, and the collection prism (2) includes a base layer (2.1) and a conductive film layer (2.2) ), protective layer (2.3), the base layer (2.1) is K9 glass, the conductive film layer (2.2) is an indium tin oxide film directly plated on the base layer (2.1), and the protective layer (2.3) is an optical coating The protective silica gel film layer on the conductive film layer (2.2); the function of the mirror one (4) and the mirror two (5) is to fold back the light path, so as to reduce the volume of the system; the connector ( 7) Play the role of fixing t...
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