JP2008061052A - Glasses-type display apparatus - Google Patents

Glasses-type display apparatus Download PDF

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Publication number
JP2008061052A
JP2008061052A JP2006237107A JP2006237107A JP2008061052A JP 2008061052 A JP2008061052 A JP 2008061052A JP 2006237107 A JP2006237107 A JP 2006237107A JP 2006237107 A JP2006237107 A JP 2006237107A JP 2008061052 A JP2008061052 A JP 2008061052A
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Japan
Prior art keywords
pair
type display
display device
rims
eyeglass
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Withdrawn
Application number
JP2006237107A
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Japanese (ja)
Inventor
Tatsuro Otaki
達朗 大瀧
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Nikon Corp
株式会社ニコン
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Priority to JP2006237107A priority Critical patent/JP2008061052A/en
Publication of JP2008061052A publication Critical patent/JP2008061052A/en
Application status is Withdrawn legal-status Critical

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Abstract

An eyeglass-type display device capable of adjusting an eye point position with a simple configuration is provided.
A position of an eye point EP of a combiner optical system 30 that displays an external light beam and a video light beam projected from a video projection device in a superimposed manner is relatively moved in a virtual plane perpendicular to the line of sight of an observer. So, I made the eye point EP match the human eye.
[Selection] Figure 3

Description

  The present invention relates to a glasses-type display device.

  As a conventional eyeglass-type display device, one described in Japanese Patent Application Laid-Open No. 2005-84522 is known.

  In this glasses-type display device, a prism (optical path) that guides a display light beam from an image display surface is formed on a lens (transparent substrate) disposed in front of an observer's eyes. The external light flux and the display light flux incident on the pupil position of the observer are guided to the observer's eyes, and the observer can see the display image while looking at the external environment.

  This glasses-type display device has a problem that it is heavy and looks unpleasant. Conventionally, in order to solve these problems, thinning lenses and prisms has been performed.

  When the lens or prism is made thinner, the angle of view and the diameter of the eye point (exit pupil of the optical system) become smaller. When the angle of view and the diameter of the eye point are reduced, the range in which the observer can properly observe the displayed image becomes narrower, and when the spectacle-type display device is worn, the observer's pupil shifts from the eye point and nothing can be seen. , Vignetting may occur because part of the light beam does not enter the observer's pupil. In order for the observer to appropriately observe the entire field of view of the display image, it is necessary to move the lens or prism so that the pupil position of the observer matches the eye point.

On the other hand, there is a method of adjusting the position of the eye point by providing guide shafts that are respectively screwed to the left and right rims that hold the lens of the eyeglass-type display device, and changing the distance between the left and right rims by rotating the guide shafts. Are known.
JP 2005-84522 A

  However, the mechanism for adjusting the position of the eye point using the guide shaft is complicated, and when this mechanism is applied to the spectacles-type display device, there is a problem that the spectacle-type display device is enlarged.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a glasses-type display device capable of adjusting the eye point position with a simple configuration.

  In order to solve the above-mentioned problem, the invention described in claim 1 is directed to a combiner optical system that displays an external light flux and an image projected from a video projection device in an overlapping manner, and a position of an exit pupil of the combiner optical system to the observer's line of sight And a moving means that is relatively movable in a virtual plane orthogonal to each other.

According to a second aspect of the present invention, in the eyeglass-type display device according to the first aspect, the combiner optical system includes a light propagation member that receives and propagates an image light beam from the image projection device,
The moving means is characterized in that the condensing lens and the display means of the video projector can be moved relative to the light propagation member.

  According to a third aspect of the present invention, in the eyeglass-type display device according to the first or second aspect, the pair of rims that hold the transparent substrate and are connected via the bridge portion are provided at both ends of the pair of rims. A frame composed of a pair of temple portions, wherein the frame includes at least a distance between one rim of the pair of rims and one temple portion of the pair of temple portions, the one rim, It has the adjustment means which adjusts the space | interval with the said bridge | bridging part, It is characterized by the above-mentioned.

  According to a fourth aspect of the present invention, in the eyeglass-type display device according to any one of the first to third aspects, the light propagation member is formed on the transparent substrate held on one rim of the pair of rims. The moving means includes a plurality of screw holes provided in one rim of the pair of rims and a plurality of screws screwed into the plurality of screw holes.

  According to the present invention, the eye point position can be adjusted with a simple configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a glasses-type display device according to a first embodiment of the present invention.

  The eyeglass-type display device 1 includes a frame 10, lenses (transparent substrates) 20 a and 20 b, a combiner optical system 30, and an image projection device 40.

  The frame 10 includes a pair of temple portions 11a and 11b, a pair of rims 12a and 12b disposed between the pair of temple portions 11a and 11b, and a bridge portion 13 that connects the pair of rims 12a and 12b. Yes.

  The lens 20a is held by the rim 12a, and the lens 20b is held by the rim 12b. A prism (light propagation member) 31 constituting a combiner optical system 30 is embedded in the lens 20a.

  The combiner optical system 30 superimposes and displays the external light flux and the image projected from the image projection device 40.

  As will be described later, the video projector 40 includes a condenser lens 41, an LCD (liquid crystal display) panel (display means) 42, etc. (see FIG. 2). The video projection device 40 is attached to the temple portion 11a.

  The glasses-type display device 1 is worn on the face of the observer by placing the temple portions 11a and 11b on the ears and placing the bridge portion 13 on the nose in the same manner as the glasses.

  FIG. 2 is a conceptual diagram showing a cross section of the image projection apparatus.

  The video projector 40 includes a condenser lens 41, an LCD panel 42, a diffusion plate 43, and an LED 44. The condenser lens 41 and the LCD panel 42 can move relative to the prism 31 (see FIG. 1). A holding frame 45 that holds the condenser lens 41, the LCD panel 42, the diffusion plate 43, and the LED 44 is accommodated in a housing 47 via a jelly-like filler 46.

  The diffuser plate 43 is a translucent sheet (film or plate) that scatters and diffuses the light emitted from the LEDs 44. The diffuser plate 43 allows light of uniform brightness to enter the entire surface of the LCD panel 42.

  An image is displayed on the LCD panel 42 by controlling a voltage value applied to the LCD panel 42 to block or transmit light emitted from the LED 44 as a backlight. Although not shown, since light cannot be blocked by the liquid crystal alone, polarizing filters (not shown) are arranged before and after the liquid crystal of the LCD panel 42, respectively.

  Instead of the LCD panel 42, an EL (organic electroluminescence) display may be used. When an EL display is used, a backlight is not necessary.

  A plurality of holes 48 into which push rods 49 and the like can be inserted are formed in the casing 47 in the circumferential direction in order to move the holding frame 45. The push rod 49 and the hole 48 constitute moving means.

  FIG. 3A is a conceptual diagram showing a cross section of the combiner optical system of the eyeglass-type display device according to the first embodiment of the present invention, FIG. 3B is a view taken in the direction of arrow A in FIG. c) is a diagram illustrating a relationship between an eyeball and an eye point.

  The combiner optical system 30 includes a prism (light propagation member) 31. A reflective optical element such as an aluminum mirror is disposed on one inclined surface P2 of the prism 31, and a holographic optical element is disposed on the other inclined surface P4. A half mirror, a polarizing beam splitter, or the like may be used instead of the holographic optical element.

  The light beam emitted from the LED 44 and transmitted through the central portion of the LCD panel 42 is modulated by the LCD panel 42 to become an image light beam L1 (indicated by a one-dot chain line in FIG. 3A), and is collected by the condenser lens 41. Then, the light enters the prism 31 from the surface P1. The image light beam L1 incident on one end of the prism 31 is reflected by the inclined surface P2, and then reflected by the surface P1 and the surface P3 of the prism 31 three times. The image light beam L1 is guided to the inclined surface P4 at the other end of the prism 31, and is diffracted and reflected by the inclined surface P4. The holographic optical element has a combiner function, and the image light beam L1 is superimposed on an external light beam incident substantially perpendicular to the surface P3, and is guided to an eye point EP (an exit pupil of the optical system).

  Further, the light beam transmitted through the peripheral portion of the LCD panel 42 is modulated by the LCD panel 42 to become an image light beam L2 (indicated by a dotted line in FIG. 3A), which is condensed by the condenser lens 41 and from the surface P1. The light enters the prism 31. The image light beam L2 incident on one end of the prism 31 is reflected by the inclined surface P2, and then reflected by the surface P1 and the surface P3 of the prism 31 three times. The image light beam L2 is guided to the inclined surface P4 at the other end of the prism 31, and is diffracted and reflected by the inclined surface P4. The image light beam L2 is superimposed on the external light beam incident substantially perpendicular to the surface P3, and is guided to the eye point EP.

  The holographic optical element acts as an eyepiece for an image light beam having a wavelength that matches the diffraction wavelength, and an enlarged image is guided to the eye point EP.

  By the way, as shown in FIG. 3C, the human eyeball is provided on the crystalline lens L that functions as a convex lens, the retina R at the focal position, and the front surface of the crystalline lens L, and acts as a diaphragm. An iris I for adjusting the amount of light, an aqueous humor A filled between the cornea C and the lens L, and a vitreous body V between the lens L and the retina R are provided. If the position of the eye point EP matches the human pupil (the part surrounded by the iris I), the entire field of view (the entire LCD panel 42) can be seen. It is necessary to match the eye point EP to the above.

  Using the push rod 49 (see FIG. 2), the LCD panel 42 and the condenser lens 41 are moved in the A and B directions within a virtual plane orthogonal to the optical axis of the condenser lens 41 (see FIG. 3B). Then, the position of the exit pupil of the combiner optical system 30 is moved in the A ′ and B ′ directions within a virtual plane orthogonal to the observer's line of sight to match the eye point EP with the observer's pupil.

  According to this embodiment, since the holding frame 45 that holds the LCD panel 42 and the condenser lens 41 without changing the relative position is provided, the eye frame can be simply configured by moving the holding frame 45 by the push rod 49. The position of the EP can be adjusted.

  FIG. 4A is a conceptual diagram of an eyeglass-type display device according to a second embodiment of the present invention, and FIG. 4B is a conceptual diagram showing a cross section of an example of an adjusting mechanism.

  The eyeglass-type display device 101 includes a frame 110, lenses (transparent substrates) 120a and 120b, a combiner optical system 130, and an image projection device (not shown).

  The frame 110 includes a pair of temple portions 111a and 111b, a pair of rims 112a and 112b disposed between the pair of temple portions 111a and 111b, and a bridge portion 113 that connects the pair of rims 112a and 112b. Yes.

  The lens 120a is held by the rim 112a, and the lens 120b is held by the rim 112b. The lens 120 a incorporates a prism (light propagation member) 131 that constitutes a part of the combiner optical system 130.

  The combiner optical system 130 superimposes and displays the external light flux and the image projected from the image projection device (not shown).

The rim 112a has a rectangular frame shape, and two female screw portions (screw holes) 115a for position adjustment are formed on each side. A male screw (screw) 116a is screwed into the female screw portion 115a, and the lens 120a can be moved in the A and B directions within the surface of the rim 112a by tightening or loosening the male screw 116a. The female thread portion 115a and the external thread 116a constitute moving means.
The lens 120a is moved in the A and B directions within the rim 112a, and the position of the exit pupil of the combiner optical system 130 is moved in a virtual plane perpendicular to the observer's line of sight to match the eye point EP with the observer's pupil. Let

  The width w of each side of the rim 112a itself is about 5 mm, and the combiner optical system 130 can be moved about 2.5 mm in the A and B directions.

  As a modification, the image projection device and the prism 131 may be separated and the condenser lens 41 and the LCD panel 42 may be movable with respect to the prism 131 as in the first embodiment. The lens 41 and the prism 131 may be integrated, and the LCD panel 42 and the lens 41 may be moved integrally with the prism 131 as the lens 120a (combiner optical system 130) moves.

  Further, the temple portion 111a and the rim 112a, the temple portion 111b and the rim 112b, the rim 112a and the bridge portion 113, and the rim 112b and the bridge portion 113 are connected via an adjustment mechanism (adjustment means) 150, respectively.

  An adjustment mechanism 150 provided between the temple portion 111a and the rim 112a will be described as an example with reference to FIG.

  A female screw portion 111c that is screwed into a male screw portion 112c protruding from the rim 112a is slidably supported by the temple portion 111a. A part of the female thread portion 111c is exposed from the surface of the temple portion 111a.

  By rotating the female threaded portion 111c, the length at which the male threaded portion 112c and the female threaded portion 111c are screwed together changes, and the relative position of the temple portion 111a with respect to the rim 112a changes. Therefore, the interval between the temple portions 111a and 111b can be adjusted according to the width of the observer's face by rotating the female screw portion 111c.

  According to this embodiment, the same effect as that of the first embodiment can be obtained, and the distance between the temple portions 111a and 111b can be adjusted in accordance with the width of the face of the observer. Can be given to a person.

  In each of the above-described embodiments, a lens incorporating a combiner optical system is disposed in front of one of the left and right eyes as the eyeglass-type display device. However, a lens incorporating a combiner optical system is disposed in front of both the left and right eyes. You may do it.

FIG. 1 is a perspective view of a glasses-type display device according to a first embodiment of the present invention. FIG. 2 is a conceptual diagram showing a cross section of the image projection apparatus. FIG. 3A is a conceptual diagram showing a cross section of the combiner optical system of the eyeglass-type display device according to the first embodiment of the present invention, FIG. 3B is a view taken in the direction of arrow A in FIG. c) is a diagram illustrating a relationship between an eyeball and an eye point. FIG. 4A is a conceptual diagram of an eyeglass-type display device according to a second embodiment of the present invention, and FIG. 4B is a conceptual diagram showing a cross section of an example of an adjusting mechanism.

Explanation of symbols

  10, 110: Frame, 11a, 11b, 111a, 111b: Temple part, 12a, 12b, 112a, 112b: Rim, 13, 113: Bridge part, 20a, 20b, 120a, 120b: Lens (transparent substrate), 30, 130: combiner optical system, 31, 131: prism (light propagation member), 40: video projection device, 41: condenser lens, 42: LCD (liquid crystal display) panel (display means), 49: push rod, 115a: female screw Part (screw hole), 116a: male screw (screw), 150: adjusting mechanism (adjusting means).

Claims (4)

  1. A combiner optical system for displaying the external light flux and the image projected from the image projection device in an overlapping manner;
    An eyeglass-type display device comprising: a moving unit that relatively moves the position of the exit pupil of the combiner optical system in a virtual plane orthogonal to the line of sight of the observer.
  2. The combiner optical system includes a light propagation member that enters and propagates an image light beam from the image projection device,
    The eyeglass-type display device according to claim 1, wherein the moving unit is capable of moving the condenser lens and the display unit of the image projection device relative to the light propagation member.
  3. A frame that includes a pair of rims that hold a transparent substrate and are connected via a bridge portion, and a pair of temple portions provided at both ends of the pair of rims,
    The frame has adjusting means for adjusting at least a distance between one rim of the pair of rims and one temple part of the pair of temple parts and a distance between the one rim and the bridge part. 3. The eyeglass-type display device according to claim 1, wherein the eyeglass-type display device is provided.
  4. The light propagation member is provided on the transparent substrate held on one of the pair of rims,
    The said moving means has a plurality of screw holes provided in one rim of the pair of rims, and a plurality of screws screwed into the plurality of screw holes. 2. A glasses-type display device according to item 1.
JP2006237107A 2006-09-01 2006-09-01 Glasses-type display apparatus Withdrawn JP2008061052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006237107A JP2008061052A (en) 2006-09-01 2006-09-01 Glasses-type display apparatus

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Application Number Priority Date Filing Date Title
JP2006237107A JP2008061052A (en) 2006-09-01 2006-09-01 Glasses-type display apparatus

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101846805A (en) * 2009-03-25 2010-09-29 奥林巴斯株式会社 Eyeglass-mounted type image display device
CN101846803A (en) * 2009-03-25 2010-09-29 奥林巴斯株式会社 Head-mounted type image display device
JP2010226661A (en) * 2009-03-25 2010-10-07 Olympus Corp Spectacle mount type image display device
JP2010230716A (en) * 2009-03-25 2010-10-14 Olympus Corp Head-mounted image display device
CN101900872A (en) * 2010-07-27 2010-12-01 中国航空工业集团公司洛阳电光设备研究所 Two-piece free-form surface head mounted display optical system
WO2012035677A1 (en) * 2010-09-16 2012-03-22 オリンパス株式会社 Head-mounted image display device
JP2012163662A (en) * 2011-02-04 2012-08-30 Seiko Epson Corp Virtual image display device
JP2012163661A (en) * 2011-02-04 2012-08-30 Seiko Epson Corp Virtual image display device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101846805A (en) * 2009-03-25 2010-09-29 奥林巴斯株式会社 Eyeglass-mounted type image display device
CN101846803A (en) * 2009-03-25 2010-09-29 奥林巴斯株式会社 Head-mounted type image display device
JP2010224473A (en) * 2009-03-25 2010-10-07 Olympus Corp Head-mounted type video display device
JP2010226661A (en) * 2009-03-25 2010-10-07 Olympus Corp Spectacle mount type image display device
JP2010230716A (en) * 2009-03-25 2010-10-14 Olympus Corp Head-mounted image display device
CN101846803B (en) 2009-03-25 2014-03-26 奥林巴斯株式会社 Head-mounted type image display device
CN101900872A (en) * 2010-07-27 2010-12-01 中国航空工业集团公司洛阳电光设备研究所 Two-piece free-form surface head mounted display optical system
WO2012035677A1 (en) * 2010-09-16 2012-03-22 オリンパス株式会社 Head-mounted image display device
JP2012063637A (en) * 2010-09-16 2012-03-29 Olympus Corp Head-mounted image display device
US9091847B2 (en) 2010-09-16 2015-07-28 Olympus Corporation Head-mounted image display device
JP2012163662A (en) * 2011-02-04 2012-08-30 Seiko Epson Corp Virtual image display device
JP2012163661A (en) * 2011-02-04 2012-08-30 Seiko Epson Corp Virtual image display device

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Effective date: 20091110