Patent US5243375A successfully refreshed from Google Patents.
US5243375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic focus adjusting device for adjusting the focus of the main object to be photographed
Assignee: Minolta Co Ltd
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Filing: 1991-07-30
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Granted: 1993-09-07
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Expires: 2011-07-30
Abstract
Abstract An automatic focus adjusting device detects focus condition respectively of a plurality of areas of a scene to be photographed to calculate respective focus adjusting data, and automatically adjusts the focus of an objective lens on an object in the scene based on the focus adjusting data. And the automatic focus adjusting device decides a focus adjusting data from the plurality of focus adjusting data based on an image magnification data representing the size of the object relative to the scene, a focal length of the objective lens or an object distance to automatically adjust the focus.
Inventors
- 👤 Tokuji Ishida
- 👤 Toshio Norita
- 👤 Hiroshi Ootsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:53
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/28; G02B7/34; G02B7/346
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
117 words
An automatic focus adjusting device comprising: object distance detecting means for detecting object distance; a plurality of optical means corresponding to a plurality of areas in a scene, respectively, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each area; focus adjusting data calculating means for calculating data relating to focus adjustment of each area in accordance with the light receiving data to produce focus adjusting data of each area; and focus adjusting data deciding means for deciding a second focus adjusting data to be focus adjusted based on the object distance and the focus adjusting data.
Claim 2
Dependent Claim
117 words
An automatic focus adjusting device comprising: object distance detecting means for detecting object distance; a plurality of optical means corresponding to a plurality of areas in a scene, respectively, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each area; focus adjusting data calculating means for calculating data relating to focus adjustment of each area in accordance with the light receiving data to produce focus adjusting data of each area; and focus adjusting data deciding means for deciding a second focus adjusting data to be focus adjusted based on the object distance and the focus adjusting data.
Claim 3
Dependent Claim
54 words
An automatic focus adjusting device as claimed in claim 1, wherein said focus adjusting data calculating means has a plurality of focus detecting means for detecting a focus condition of each area to obtain a defocus amount of each area and calculating the focus adjusting data based on the focus condition of each area.
Claim 4
Dependent Claim
52 words
An automatic focus adjusting device as claimed in claim 1, further comprising: focal length outputting means for outputting focal length data, wherein the focus adjusting data deciding means for deciding a second focus adjusting data to be adjusted based on the object distance, the focal length data and the focus adjusting data.
Claim 5
Dependent Claim
115 words
An automatic focus adjusting device comprising: object distance detecting means for detecting object distance; a plurality of optical means corresponding to a plurality of areas in a scene, respectively, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each area; focus adjusting data calculating means having a plurality of calculating means each of which calculates focus adjusting data of each area based on the corresponding light receiving data; and focus adjusting data selecting means for selecting a calculating means from said plurality of calculating means based on the object distance and the focus adjusting data.
Claim 6
Dependent Claim
115 words
An automatic focus adjusting device comprising: object distance detecting means for detecting object distance; a plurality of optical means corresponding to a plurality of areas in a scene, respectively, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each area; focus adjusting data calculating means having a plurality of calculating means each of which calculates focus adjusting data of each area based on the corresponding light receiving data; and focus adjusting data selecting means for selecting a calculating means from said plurality of calculating means based on the object distance and the focus adjusting data.
Claim 7
Dependent Claim
125 words
An automatic focus adjusting device comprising: a plurality of optical means corresponding to a plurality of areas in a scene, respectively, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each area; focus adjusting data calculating means for calculating data relating to focus adjustment of each area in accordance with the light receiving data to produce focus adjusting data of each area; difference calculating means for calculating difference between two focus adjusting data among the focus adjusting data; and focus adjusting data deciding means for deciding a second focus adjusting data to be focus adjusted based on the calculated difference and the focus adjusting data.
Claim 8
Dependent Claim
125 words
An automatic focus adjusting device comprising: a plurality of optical means corresponding to a plurality of areas in a scene, respectively, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each area; focus adjusting data calculating means for calculating data relating to focus adjustment of each area in accordance with the light receiving data to produce focus adjusting data of each area; difference calculating means for calculating difference between two focus adjusting data among the focus adjusting data; and focus adjusting data deciding means for deciding a second focus adjusting data to be focus adjusted based on the calculated difference and the focus adjusting data.
Claim 9
Dependent Claim
54 words
An automatic focus adjusting device as claimed in claim 5, wherein said focus adjusting data calculating means has a plurality of focus detecting means for detecting a focus condition of each area to obtain a defocus amount of each area and calculating the focus adjusting data based on the focus condition of each area.
Claim 10
Dependent Claim
27 words
An automatic focus adjusting device as claimed in claim 5, wherein said two focus adjusting data include a maximum focus adjusting data and another focus adjusting data.
Claim 11
Dependent Claim
27 words
An automatic focus adjusting device as claimed in claim 5, wherein said two focus adjusting data include a minimum focus adjusting data and another focus adjusting data.
Claim 12
Dependent Claim
120 words
An automatic focus adjusting device comprising: a plurality of optical means corresponding to a plurality of areas in a scene, respectively, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each area; focus adjusting data calculating means having a plurality of calculating means each of which calculates focus adjusting data of each area based on the corresponding light receiving data; difference calculating means for calculating differences between two focus adjusting data among the focus adjusting data; and selecting means for selecting a calculating means from said plurality of calculating means based on the calculated difference and the focus adjusting data.
Claim 13
Dependent Claim
120 words
An automatic focus adjusting device comprising: a plurality of optical means corresponding to a plurality of areas in a scene, respectively, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each area; focus adjusting data calculating means having a plurality of calculating means each of which calculates focus adjusting data of each area based on the corresponding light receiving data; difference calculating means for calculating differences between two focus adjusting data among the focus adjusting data; and selecting means for selecting a calculating means from said plurality of calculating means based on the calculated difference and the focus adjusting data.
Claim 14
Dependent Claim
107 words
An automatic focus adjusting device comprising: a plurality of optical means corresponding to a plurality of objects in a scene, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each object; focus adjusting data calculating means for calculating focus adjusting data to each object calculated from the light receiving data; and focus adjusting data selecting means for selecting one of the focus adjusting data based on the relative positions of the objects along the optical axis and positional data of the optical means corresponding to each object.
Claim 15
Dependent Claim
107 words
An automatic focus adjusting device comprising: a plurality of optical means corresponding to a plurality of objects in a scene, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each object; focus adjusting data calculating means for calculating focus adjusting data to each object calculated from the light receiving data; and focus adjusting data selecting means for selecting one of the focus adjusting data based on the relative positions of the objects along the optical axis and positional data of the optical means corresponding to each object.
Claim 16
Dependent Claim
25 words
An automatic focus adjusting device as claimed in claim 10, wherein the positional relation of the optical axis is obtained from the focus adjusting data.
Claim 17
Dependent Claim
123 words
An automatic focus adjusting device comprising: a plurality of optical means corresponding to a plurality of objects in a scene, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each object; focus adjusting data calculating means for calculating focus adjusting data to each object calculated from the light receiving data; focus adjusting data selecting means for selecting focus adjusting data based on the relative positions of the objects along the optical axis and positional data of the optical means corresponding to each object; and focus adjusting data deciding means for deciding a second focus adjusting data based on the selected focus adjusting data.
Claim 18
Dependent Claim
123 words
An automatic focus adjusting device comprising: a plurality of optical means corresponding to a plurality of objects in a scene, and for focus detection; light receiving means having a plurality of light receiving portions provided corresponding to said plurality of optical means respectively, to produce light receiving data of each object; focus adjusting data calculating means for calculating focus adjusting data to each object calculated from the light receiving data; focus adjusting data selecting means for selecting focus adjusting data based on the relative positions of the objects along the optical axis and positional data of the optical means corresponding to each object; and focus adjusting data deciding means for deciding a second focus adjusting data based on the selected focus adjusting data.
References Cited (Backward Citations)
US4083056A
Cited
US4284335A
Cited
US4373791A
Cited
US4341953A
Cited
US4387975A
Cited
USRE32376E
Cited
US4416523A
Cited
US4415246A
Cited
JPS5849844A
Cited
US4681419A
Cited
US4659917A
Cited
JPS58224318A
Cited
US4589031A
Cited
US4423936A
Cited
JPS5930510A
Cited
US4560863A
Cited
JPS5948719A
Cited
US4563576A
Cited
JPS5967505A
Cited
JPS59107311A
Cited
JPS59123822A
Cited
US4636624A
Cited
JPS59129810A
Cited
JPS59146032A
Cited
US4575211A
Cited
JPS6014211A
Cited
US4614418A
Cited
JPS6037509A
Cited
US4687917A
Cited
JPS60101514A
Cited
JPS60120675A
Cited
JPS60144711A
Cited
JPS60183879A
Cited
US4664495A
Cited
US4650309A
Cited
US4766302A
Cited
JPS60249477A
Cited
JPS60250318A
Cited
JPS6112177A
Cited
JPS6118271A
Cited
JPS6128914A
Cited
JPS6129813A
Cited
JPS6134515A
Cited
JPS6170407A
Cited
JPS6153614A
Cited
JPS6155618A
Cited
US4614975A
Cited
US4764786A
Cited
JPS6214015A
Cited
JPS6267971A
Cited
JPS6295511A
Cited
US4743931A
Cited
JPS62138808A
Cited
US4716434A
Cited
JPS62166309A
Cited
JPS62173413A
Cited
US4768054A
Cited
JPS62189415A
Cited
JPS62204247A
Cited
JPS6310136A
Cited
JPS6310135A
Cited
US4768052A
Cited
US4904854A
Cited
US5053801A
Cited
US4857720A
Cited
US4905032A
Cited
US4994841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-09-06 | 1997-03-08 | 1997-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-06 | 2001-03-08 | 2001-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-06 | 2005-03-08 | 2005-09-07 | $7700.00 | Window Closed / Lapsed |