Ultraviolet irradiation device

Abstract

An ultraviolet irradiating apparatus is provided to control power supplied to each light emitting diode by disposing an ultraviolet light emitting diode of a line type as an ultraviolet source for forming a light irradiation region of a thin and long shape emitted from an ultraviolet irradiating apparatus and by independently supplying power to each ultraviolet light emitting diode. An ultraviolet irradiating apparatus includes an ultraviolet irradiating part(10) for irradiating ultraviolet rays, a power part for supplying power to the ultraviolet irradiating part, and a control part for supplying a control signal to the power part. The ultraviolet irradiating part includes a plurality of ultraviolet light emitting diode and a plurality of convex lenses(13). The plurality of ultraviolet light emitting diodes are disposed in parallel with each other on a print substrate(12), made of a line type. The plurality of convex lenses are disposed at the light emitting part of the plurality of ultraviolet light emitting diodes, corresponding to each ultraviolet light emitting diode. Power is independently supplied from the power part to the plurality of ultraviolet light emitting diode, and the power is controlled by the control part. A cylindrical lens(15) is installed at the light emission part of the convex lens, collecting the light collected by the convex lens in one direction.

Description

technical field [0001] The present invention relates to an ultraviolet irradiation device for irradiating an ultraviolet ray to a treatment object. Background technique [0002] The ultraviolet rays emitted from the ultraviolet irradiation device, with a wavelength of 300nm to 400nm centered at 365nm, are irradiated onto adhesives, paints, inks, photoresists, etc. that are sensitive to this wavelength, and hardened or dried, etc. , or on the contrary, make it melt or soften, etc., and perform various treatments. Hereinafter, such processing is collectively referred to as light processing. [0003] In the above-mentioned light treatment, for example, when the light-curable protective film coated on the entire surface of a sheet-shaped long object to be treated is hardened, such as Figure 4 As shown, an elongated linear light irradiation area 200 having a length corresponding to the width of the object 100 is formed, and the entire object 100 is irradiated with ultraviolet r...

AI Technical Summary

Problems solved by technology

[0012] In order to make the irradiation amount uniform on the inner peripheral side and the outer peripheral side of the object 100 to be processed, it is necessary to make the light intensity on the inner peripheral side weaker and the intensity on the outer peripheral side stronger. However, it is difficult to adjust the intensity of light emitted from the rod-shaped lamp. partly changed

[0013] In such a case, it is conceivable to use a filter with a partial difference in transmittance between the rod lamp and the object to be processed. The cost of the device will be increased by making a new filter to change the light transmittance

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