US4924856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscope light source apparatus
Assignee: Olympus Corp
•
Filing: 1989-04-05
•
Granted: 1990-05-15
•
Expires: 2009-04-05
Abstract
Abstract This endoscope light source apparatus can feed an illuminating light to an endoscope requiring a white color light as an illuminating light and to an endoscope having a field sequential type imaging apparatus and requiring as an illuminating light a field sequential light sequentially switched to lights in different wavelength ranges and comprises a light source emitting a white color light, a converting apparatus interposed in the light path of the light emitted from the light source at least at the time of outputting a field sequential light and converting the white color light emitted from the light source to a field sequential light, a selecting apparatus selecting the kind of the emitted light from among a white color light and field sequential light and a light amount controlling apparatus whereby, when a field sequential light is selected by the selecting apparatus, during the exposure period of the field sequential type imaging apparatus, the light amount of the light source can be increased to be larger than outside the exposure period. Also, the endoscope light source apparatus comprises a light source, converting apparatus, selecting apparatus and light amount controlling apparatus whereby, when a field sequential light is selected by the selecting apparatus, the light amount of the light source can be increased to be larger than at the time of outputting a white color light.
Inventors
- 👤 Toshiaki Noguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/70; H04N23/74; A; A61; A61B; A61B1/00; A61B1/04; A61B1/042; A61B1/06; A61B1/0638; A61B1/0646; A61B1/0655; H04N23/50; H04N23/555
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
173 words
An endoscope light source apparatus which can feed an illuminating light to an endoscope requiring a white color light as an illuminating light and to an endoscope provided with a field sequential type imaging means and requiring as an illuminating light a field sequential light switched sequentially to lights in different wavelength ranges, comprising: a light source emitting a white color light; a light converting means interposed in the light path of the light emitted from said light source at least at the time of outputting a field sequential light and converting the white color light emitted from said light source to a field sequential light; a selecting means selecting the kind of the emitted light from among a white color light and field sequential light; and a light amount controlling means whereby, when a field sequential light is selected by said selecting means, during the exposure period of said field sequential type imaging means, the light amount of said light source can be increased to be larger than outside the exposure period.
Claim 2
Dependent Claim
173 words
An endoscope light source apparatus which can feed an illuminating light to an endoscope requiring a white color light as an illuminating light and to an endoscope provided with a field sequential type imaging means and requiring as an illuminating light a field sequential light switched sequentially to lights in different wavelength ranges, comprising: a light source emitting a white color light; a light converting means interposed in the light path of the light emitted from said light source at least at the time of outputting a field sequential light and converting the white color light emitted from said light source to a field sequential light; a selecting means selecting the kind of the emitted light from among a white color light and field sequential light; and a light amount controlling means whereby, when a field sequential light is selected by said selecting means, during the exposure period of said field sequential type imaging means, the light amount of said light source can be increased to be larger than outside the exposure period.
Claim 3
Dependent Claim
163 words
An endoscope light source apparatus which can feed an illuminating light to an endoscope requiring a white color light as an illuminating light and to an endoscope provided with a field sequential type imaging means and requiring as an illuminating light a field sequential light switched sequentially to lights in different wavelength ranges, comprising: a light source emitting a white color light; a light converting means interposed in the light path of the light emitted from said light source at least at the time of outputting a field sequential light and converting the white color light emitted from said light source to a field sequential light; a selecting means selecting the kind of the emitted light from among a white color light and field sequential light; and a light amount controlling means whereby, when a field sequential light is selected, the light amount of said light source can be increased to be larger than at the time of outputting a white color light.
Claim 4
Dependent Claim
163 words
An endoscope light source apparatus which can feed an illuminating light to an endoscope requiring a white color light as an illuminating light and to an endoscope provided with a field sequential type imaging means and requiring as an illuminating light a field sequential light switched sequentially to lights in different wavelength ranges, comprising: a light source emitting a white color light; a light converting means interposed in the light path of the light emitted from said light source at least at the time of outputting a field sequential light and converting the white color light emitted from said light source to a field sequential light; a selecting means selecting the kind of the emitted light from among a white color light and field sequential light; and a light amount controlling means whereby, when a field sequential light is selected, the light amount of said light source can be increased to be larger than at the time of outputting a white color light.
Claim 5
Dependent Claim
64 words
An endoscope light source apparatus according to claim 1 wherein, when a field sequential light is selected by said selecting means, during the exposure period of said field sequential type imaging means, said light amount controlling means can increase the light amount of said light source to be larger than outside the exposure period and at the time of outputting a white color light.
Claim 6
Dependent Claim
40 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein the endoscope provided with said field sequential type imaging means is an electronic endoscope having said field sequential type imaging means within the endoscope body.
Claim 7
Dependent Claim
68 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein said endoscope provided with a field sequential type imaging means comprises an endoscope body having an image transmitting means transmitting an object image from the tip part of the insertable part to the eyepiece part and a television camera removably connected to said eyepiece part and having said field sequential type imaging means.
Claim 8
Dependent Claim
53 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein said endoscope requiring a white color light as an illuminating light is a naked eye observable endoscope having an image transmitting means transmitting an object image from the tip part of the insertable part to the eyepiece part.
Claim 9
Dependent Claim
67 words
An endoscope light apparatus according to any one of claims 1 to 3 wherein said endoscope requiring a white color light as an illuminating light comprises an endoscope body having an image transmitting means transmitting an object image from the tip part of the insertable part to the eyepiece part and a television camera removably connected to said eyepiece part and having a simultaneous type imaging means.
Claim 10
Dependent Claim
40 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein said endoscope requiring a white color light as an illuminating light is an electronic endoscope having a simultaneous type imaging means within the endoscope body.
Claim 11
Dependent Claim
61 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein said endoscope requiring a white color light as an illuminating light comprises an endoscope body having an image transmitting means transmitting an object image from the tip part of the insertable part to the eyepiece part and a cine camera removably connected to said eyepiece part.
Claim 12
Dependent Claim
55 words
An endoscope light source apparatus according to any one of claims 1 to 3 further comprising a discriminating means discriminating the kind of the endoscope to be used, said selecting means selecting the kind of the light adapted to the endoscope to be used on the basis of the discriminating information of said discriminating means.
Claim 13
Dependent Claim
73 words
An endoscope light source apparatus according to claim 10 wherein said endoscope requiring a white color light as an illuminating light has a simultaneous type imaging means and said discriminating means senses whether a signal processing apparatus for said field sequential type imaging means or a signal processing apparatus for said simultaneous type imaging means is connected to said endoscope light source apparatus and discriminates the kind of the endoscope to be used.
Claim 14
Dependent Claim
37 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein said field sequential type imaging means is a solid state imaging device having exposure periods and charge transfer periods during the operation.
Claim 15
Dependent Claim
28 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein said light amount controlling means controls the current fed to said light source.
Claim 16
Dependent Claim
54 words
An endoscope light source apparatus according to claim 1 or 3 wherein said converting means is a rotary filter in which a plurality of filters transmitting lights in respectively different wavelength ranges are arranged in the peripheral direction and are sequentially interposed into the light path of the light emitted from said light source.
Claim 17
Dependent Claim
55 words
An endoscope light source apparatus according to claim 14 wherein said rotary filter has light intercepting parts between said respective filters and the periods in which said respective filters are interposed in the light path of the light emitted from said light source correspond to the exposure periods of said field sequential type imaging means.
Claim 18
Dependent Claim
58 words
An endoscope light source apparatus according to claim 14 wherein said rotary filter has no light intercepting part between said respective filters and, during the other periods than the exposure periods of said field sequential type imaging means, the boundaries of said respective filters are interposed in the light path of the light emitted from said light source.
Claim 19
Dependent Claim
28 words
An endoscope light source apparatus according to claim 14 wherein said light amount controlling means controls the light amount as synchronized with the rotation of said rotary filter.
Claim 20
Dependent Claim
52 words
An endoscope light source apparatus according to claim 2 wherein said converting means is a rotary filter in which a plurality of filters transmitting lights in respectively different wavelength ranges are arranged in the peripheral direction and are sequentially interposed into the light path of the light emitted from said light source.
Claim 21
Dependent Claim
81 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein saud converting means is a rotary filter in which a plurality of filters transmitting lights in respectively different wavelength ranges are arranged in the peripheral direction and are sequentially interposed into the light path of the light emitted from said light source and said selecting means has a means removably inserting said rotary filter into the light path of the light emitted from said light source.
Claim 22
Dependent Claim
117 words
An endoscope light source apparatus according to any one of claims 1 to 3 wherein said converting means is a rotary filter which has white color light transmitting parts and in which a plurality of filters transmitting lights in respectively different wavelength ranges are arranged in the peripheral direction and are sequentially interposed into the light path of the light emitted from said light source and said selecting means switches said rotary filter to be rotated in the light path of the light emitted from said light source and to be stopped in the position in which said white color light transmitting part is interposed in the light path of the light emitted from said light source.
References Cited (Backward Citations)
US4369767A
Cited
JPS6076888A
Cited
JPS60243625A
Cited
US4713683A
Cited
JPS6182731A
Cited
US4710807A
Cited
US4742277A
Cited
US4800424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-14 | 1993-11-13 | 1994-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-14 | 1997-11-13 | 1998-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-14 | 2001-11-13 | 2002-05-15 | $7700.00 | Window Closed / Lapsed |