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Light source device with discharge tube disposed in the neck of a reflector and projector therewith

A light source device and technology of light source, applied in the direction of light source, electric light source, projection device, etc., can solve the problem of reducing beam light utilization efficiency and other problems

Inactive Publication Date: 2006-04-26
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a state, the light utilization efficiency of the light beam emitted from the light emitting part will decrease.

Method used

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  • Light source device with discharge tube disposed in the neck of a reflector and projector therewith
  • Light source device with discharge tube disposed in the neck of a reflector and projector therewith
  • Light source device with discharge tube disposed in the neck of a reflector and projector therewith

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0128] Next, Embodiment 1 of the present invention will be described with reference to the drawings.

[0129] The structure of the projector.

[0130] figure 1 It is a schematic diagram showing the optical system of the projector 1 of the first embodiment.

[0131] The projector 1 is an optical device that modulates a light beam emitted from a light source according to image information to form an optical image, and enlarges and projects it on a screen.

[0132] Such as figure 1 As shown, the projector 1 is configured to include a light source device 10, a uniform illumination optical system 20, a color separation optical system 30, a relay optical system 35, an optical device 40, and a projection optical system 50 as a projection optical device. The optical elements of the optical systems 20 to 35 and the optical device 40 are positioned and accommodated in the housing 2 for optical components in which a predetermined illumination optical axis A is set.

[0133] The light...

Embodiment 2

[0250] Next, Embodiment 2 of the present invention will be described with reference to the drawings.

[0251] In the following description, the same structure and the same components as those of the above-mentioned first embodiment are given the same reference numerals, and their detailed descriptions are omitted or simplified.

[0252] In the first embodiment described above, the light source device 10 is composed of the light source lamp 11 and the main reflector 12 .

[0253] On the other hand, in the second embodiment, the light source device 10A includes, in addition to the light source lamp 11 described in the above-mentioned first embodiment, a reflector whose shape is different from that of the main reflector 12 described in the above-mentioned first embodiment. The main mirror 12A and the sub-mirror 13. Other configurations are the same as those of the first embodiment described above.

[0254] Figure 10 and Figure 11 It is a sectional view showing a schematic c...

Embodiment 3

[0313] Next, Embodiment 3 of the present invention will be described with reference to the drawings.

[0314] In the following description, the same structures and components as those of the above-mentioned first embodiment and the above-mentioned second embodiment are given the same reference numerals to omit or simplify their detailed descriptions.

[0315] In the above-mentioned Example 1 and the above-mentioned Example 2, after the blank tube 111' was formed by blow molding, it was manufactured by machining the vicinity of the boundary between the light-emitting part 1111 and the sealing parts 1112 and 1113 of the blank tube 111'. Light emitting tube 111.

[0316] On the other hand, in Example 3, the light pipe 111A is produced by blow molding so as to satisfy the relationship of Expression 26 described in the above-mentioned Example 1, or the relationship of Expression 34 and Expression 37 described in the above-mentioned Example 2. That is, this embodiment is only diffe...

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Abstract

The light source device (10) assumes that the diameter of a substantially circle representing the end of the neck (121) side of the reflecting portion (122) of the main reflecting mirror (12) using the light reflecting region is Hd, and the diameter of the main reflecting mirror (12) is assumed to be Hd. The distance between the neck-shaped portion (121) side end of the reflection portion (122) utilizing the light reflection region and the light emission center (O) of the light-emitting portion (1111) in the direction of the central axis of the light beam emitted from the light source device (10) is f1 Let the diameter of the opening on the base end side of the neck portion (121) in the extending direction be H, the diameter of the sealing portions (1112, 1113) be T1, and let the inflection point connecting the light-emitting portion (1111) and the sealing portion (1112) be When the angle formed between (IP1) and the light emission center of the light emitting part (1111) and the central axis of the light beam emitted from the light source device (10) is θ1, θ1≤Tan−1(Hd / (2f1) ) and T1<H≤Hd.

Description

technical field [0001] The present invention relates to a light source device and a projector. Background technique [0002] Conventionally, projectors have been used that adjust light beams emitted from a light source based on image information to enlarge and project an optical image. [0003] Discharge-type light source devices such as metal halide lamps and high-pressure mercury lamps have been used as light source devices for such projectors (see, for example, the document: JP-A-8-31382). [0004] This light source device consists of a discharge-type luminous tube having a light-emitting part that discharges and emits light between electrodes and a sealing part provided at both ends of the luminous part, and a discharge-type luminous tube that adjusts the light emitted from the discharge-type luminous tube to a fixed direction and emits it. The reflective surface consists of a primary reflector. [0005] The main reflector has a neck portion that can be inserted into o...

Claims

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Application Information

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IPC IPC(8): H01J61/00F21S8/00F21Y101/00G03B21/20
CPCG03B21/2026G03B21/2066G03B21/20
Inventor 竹泽武士秋山光一桥爪俊明
Owner SEIKO EPSON CORP
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