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Polarization light irradiation apparatus

A technology of illuminating device and polarized light, which is applied in the direction of lighting device, parts of lighting device, cooling/heating device of lighting device, etc., can solve the problem of uneven illumination and achieve the effect of improving uneven illumination

Inactive Publication Date: 2015-09-09
IWASAKI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this polarized light irradiation device, the illuminance in the longitudinal direction of the light source drops sharply near the end of the light source relative to the center of the light source, and the illuminance unevenness is large.

Method used

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  • Polarization light irradiation apparatus
  • Polarization light irradiation apparatus
  • Polarization light irradiation apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0040] figure 1 is a front view schematically showing the polarized light irradiation device according to the first embodiment, figure 2 It is a side view showing the polarized light irradiation device. image 3 is a diagram showing the structure of the polarizer unit, image 3 (A) is a plan view, image 3 (B) is a side sectional view. Figure 4 It is a side cross-sectional view showing the polarized light irradiation device.

[0041] like figure 1 and figure 2 As shown, the polarized light irradiation device 1 is a photo-alignment device that irradiates polarized light to a photo-alignment film of a plate-shaped or belt-shaped work (irradiation object) W to perform photo-alignment. In the polarized light irradiation device 1, a housing 3 having a light exit opening 3A on the lower surface is equipped with a lamp 4 as a light source, a main reflector (main reflector) 5, and an auxiliary reflector (auxiliary reflector) 6, and A polarizer unit 10 is provided in the ligh...

no. 2 approach ＞

[0083] In the first embodiment, the wavelength selection filter 7 and the polarizer unit 10 are arranged close to each other, but in the second embodiment, the wavelength selection filter 7 and the polarizer unit 10 are arranged separately. In addition, in the second embodiment, the same reference numerals are used for the same parts as those of the polarized light irradiation device 1 , and description thereof will be omitted.

[0084] Figure 9 is a front view schematically showing a polarized light irradiation device according to the second embodiment, Figure 10 It is a side view showing the polarized light irradiation device. Figure 11 It is a schematic diagram showing an enlarged end portion of the lamp 4 with respect to the polarized light irradiation device.

[0085] In the polarized light irradiation device 100, such as Figure 9 ~ Figure 11 As shown, the wavelength selection filter 7 and the polarizer unit 10 are arranged largely separately.

[0086] Figure 12...

no. 3 approach ＞

[0103] In the first embodiment, the case where the light emission length M of the lamp 4 is shorter than the length of the workpiece W has been described, whereas in the third embodiment, the case in which the light emission length M of the lamp 4 is longer than the length of the workpiece W has been described. . In addition, in the third embodiment, the same reference numerals are used for the same parts as those of the polarized light irradiation device 100 , and description thereof will be omitted.

[0104] Figure 14 It is a schematic diagram showing an enlarged end portion of a lamp of the polarized light irradiation device according to the third embodiment of the present invention.

[0105] like Figure 14 As shown, since the light emitting length M of the lamp 4 is longer than the length of the workpiece W in the polarized light irradiation device 200, the angle of the lower auxiliary reflector 106B is different from that of the upper auxiliary reflector 106A, and the l...

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Abstract

There is provided a polarized light illumination device for further improving uneven illumination intensity. The polarized light illumination device (1) comprises : linear light source (4); slot-like main mirror (5),for gathering the light of light source (4),; and a grate polarizer (16), for linearly polarizing the illumnated light. The polarized light illumination device (1) illuminates polarized light to the object (W), wherein a assistant mirro (6) is provided near the light emitting end (P)of light source (4) extending from the light source (4) to the grate polarizer (16).

Description

technical field [0001] The present invention relates to a polarized light irradiation device including a linear light source, a groove-shaped main mirror, and a wire grid polarizer. Background technique [0002] A polarized light irradiation device is known that accommodates a linear light source in a groove-shaped main reflector, and irradiates an irradiation target by polarizing light from the light source with a wire grid polarizer provided on the output side of the main reflector. . In this polarized light irradiation device, the illuminance in the longitudinal direction of the light source drops sharply from the center of the light source in the vicinity of the ends of the light source, and the illuminance unevenness is large. [0003] Then, there is an ultraviolet irradiation device (for example, refer to Patent Document 1) in which auxiliary mirrors for reflecting light outward in the longitudinal direction of the light source are provided outside both ends of the li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V7/00
CPCF21S2/00F21V7/0033F21S2/005F21V7/00F21V9/14F21V29/60G02B5/3025
Inventor 山田一吉川锅保文
Owner IWASAKI ELECTRIC CO LTD
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