Unlock instant, AI-driven research and patent intelligence for your innovation.

Discharge tube, method for forming reflective film of discharge tube, and light emitting device

A reflective film and discharge tube technology, applied in the field of discharge tubes, can solve the problems of unable to obtain light intensity distribution, insufficient light quantity, unable to fully reflect light, etc.

Inactive Publication Date: 2011-12-21
PANASONIC CORP
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to adhere the vapor deposition material to the outer peripheral surface 96 (the half peripheral surface of the tube surface away from the vapor deposition source) that becomes the shaded surface with respect to the vapor deposition source, and the film thickness of the reflective film 96 becomes extremely thin.
Therefore, the light emitted in the discharge tube 91 cannot be sufficiently reflected.
[0007] Therefore, such a light-emitting device using a flash lamp device of a conventional discharge tube cannot obtain a uniform light intensity distribution due to insufficient light quantity.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Discharge tube, method for forming reflective film of discharge tube, and light emitting device
  • Discharge tube, method for forming reflective film of discharge tube, and light emitting device
  • Discharge tube, method for forming reflective film of discharge tube, and light emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Hereinafter, the present invention will be described based on embodiments with reference to the drawings. figure 1 It is a schematic diagram of a vacuum vapor deposition apparatus used in the method of forming a reflective film of a discharge tube according to one embodiment of the present invention. figure 2 It is a perspective view showing a vapor deposition jig used in the method for forming a reflective film of a discharge tube according to this embodiment.

[0030] First, an outline of a method for forming a reflective film of a discharge tube by vacuum evaporation will be described. exist figure 1 In , the glass bulb 2 is fixed to the evaporation jig 3 and placed in the vacuum chamber 4 of the vacuum evaporation device 1 . A reflective film is formed on the outer peripheral surface of the glass bulb 2 by evaporating metal from the evaporating source 6 . From the viewpoint of production efficiency, a plurality of glass bulbs 2 can be installed in the vapor de...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed is a light emitting device comprised of a glass bulb (2), and a reflective film (13) formed on the outer peripheral surface of the glass bulb (2) at an angular range of at least 230 DEG , so that the reflective film (13) having a sufficient thickness can be obtained in a large area of the outer peripheral surface of an electric discharge tube (22), and an uniform light intensity distribution is obtained.

Description

technical field [0001] The present invention relates to a discharge tube used as an artificial light source for photography, etc., a method for forming a reflective film of the discharge tube, and a light emitting device. Background technique [0002] In recent years, miniaturization is required for compact cameras and mobile phones with camera functions, and miniaturization is also required for strobe devices attached to them and used as artificial light sources. [0003] In order to simplify the structure in response to miniaturization, in order to simplify the structure of the light-emitting part of the strobe device, a strobe device was proposed in which a reflective film was provided on the outer peripheral surface of the discharge tube by abolishing the reflective umbrella conventionally used in the strobe unit (see Patent Document 1). . [0004] Figure 10 It is a cross-sectional view of a discharge tube used in a conventional strobe device. In this strobe device, o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01J61/35G03B15/02G03B15/05H01J9/20
CPCG03B15/02G03B15/05H01J61/025H01J61/35G03B15/0442H01J61/90A61N5/0616G03B15/0484H01J9/20A61N2005/0654G03B2215/0525G03B2215/0532
Inventor 荻野康志堤清志村井利彰
Owner PANASONIC CORP