EP0275217A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Photoelectric converting apparatus
Assignee: Canon Inc
•
Filing: 1988-01-15
•
Granted: —
•
Expires: 2008-01-15
Abstract
Abstract In a photoelectric converting apparatus having a plurality of photosensors (S d , S f , S₁...S n ) divided into an opening portion (S₁-S n ) and a light shielding portion (S d & S f ), a carrier eliminating structure (S f ) to block the inflow of photosignals from the opening portion is provided between the photosensor in the light shielding portion (S d ) and the photosensors in the opening portion (S₁). The photosensor consists of a photoelectric converting transistor having a control electrode region (103) to accumulate the carriers generated by the light excitation. The carrier eliminating structure has the same constitution as that of the photosensor. The potential of the control electrode region (103) is fixed to a constant potential so as to attract the carriers from the opening portion.
Inventors
- 👤 Shigetoshi Sugawa
- 👤 Nobuyoshi Tanaka
- 👤 Yoshio Nakamura
- 👤 Isamu Ueno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 09:37
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/197; H04; H04N; H04N25/00; H04N25/60; H04N25/62; H04N25/625; H04N25/70; H04N25/701; H04N25/76
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
50 words
A photoelectric converting apparatus having a plurality of photosensors divided into an opening portion and a light shielding portion, wherein carrier eliminating means for blocking an inflow of photosignals from said opening portion is provided between the photosensor in said light shielding portion and the photosensors in the opening portions.
Claim 2
Dependent Claim
50 words
A photoelectric converting apparatus having a plurality of photosensors divided into an opening portion and a light shielding portion, wherein carrier eliminating means for blocking an inflow of photosignals from said opening portion is provided between the photosensor in said light shielding portion and the photosensors in the opening portions.
Claim 3
Dependent Claim
66 words
An apparatus according to claim 1, wherein each of said photosensors consists of a photoelectric converting transistor having a control electrode region to accumulate carriers generated by a light excitation, and said carrier eliminating means has the same constitution as said photosensors and a potential of said control electrode region is fixed to a constant potential so as to attract the carriers from said opening portion.
Claim 4
Dependent Claim
18 words
An apparatus according to claim 1, further having means for shielding said carrier eliminating means from the light.
Claim 5
Dependent Claim
30 words
An apparatus according to claim 1, further having means for eliminating an output of the photosensor in said light shielding portion from outputs of the photosensors in said opening portion.
Claim 6
Dependent Claim
46 words
A photoelectric converting apparatus having a light measuring function in which a plurality of photosensors are arranged, wherein selecting means which can select the photosensors in a desired position among said plurality of photosensors is provided and a photometric signal is formed by the selected photosensors.
Claim 7
Dependent Claim
46 words
A photoelectric converting apparatus having a light measuring function in which a plurality of photosensors are arranged, wherein selecting means which can select the photosensors in a desired position among said plurality of photosensors is provided and a photometric signal is formed by the selected photosensors.
Claim 8
Dependent Claim
36 words
An apparatus according to claim 5, wherein each of said photosensors includes a photoelectric converting transistor having a control electrode region to accumulate carriers generated by the light excitation and a plurality of main electrode regions.
Claim 9
Dependent Claim
31 words
An apparatus according to claim 6, wherein said selecting means forms the photometric signal by selectively using the signal of one of the main electrode regions of each of said photosensors.
Claim 10
Dependent Claim
21 words
An apparatus according to claim 7, wherein said main electrode region which is used by said selecting means constitutes an emitter.
Claim 11
Dependent Claim
14 words
An apparatus according to claim 8, wherein said selecting means includes a switching element.
Claim 12
Dependent Claim
21 words
An apparatus according to claim 9, wherein said selecting means connects emitters of predetermined photosensor cells to a common output line.
Claim 13
Dependent Claim
19 words
An apparatus according to claim 5, wherein a part of said plurality of photosensors is shielded from the light.
Claim 14
Dependent Claim
32 words
An apparatus according to claim 11, further having carrier eliminating means for preventing the movement of carriers between the light shielded photosensor and the photosensors which are not shielded from the light.
Claim 15
Dependent Claim
66 words
An apparatus according to claim 12, wherein each of said photosensors consists of a photoelectric converting transistor having a control electrode region to accumulate carriers generated by a light excitation, and said carrier eliminating means has the same constitution as said photosensors and a potential of said control electrode region is fixed to a constant potential so as to attract the carriers from said opening portion.
Claim 16
Dependent Claim
73 words
A photoelectric converting apparatuses consisting of a plurality of photosensors each having an accumulation region of a semiconductor of one conductivity type to accumulate carriers generated by a light excitation, wherein a first region of a semiconductor of an opposite conductivity type joined to said accumulation region and a second region of a semiconductor of one conductivity type joined to said first region are provided in a depth direction of said accumulation region.
Claim 17
Dependent Claim
73 words
A photoelectric converting apparatuses consisting of a plurality of photosensors each having an accumulation region of a semiconductor of one conductivity type to accumulate carriers generated by a light excitation, wherein a first region of a semiconductor of an opposite conductivity type joined to said accumulation region and a second region of a semiconductor of one conductivity type joined to said first region are provided in a depth direction of said accumulation region.
Claim 18
Dependent Claim
35 words
An apparatus according to claim 14, wherein in the joined portion of said first and second regions, at least the portion below said accumulation region is formed so as to have a high impurity concentration.
Claim 19
Dependent Claim
17 words
An apparatus according to claim 14, further having means for reversely biasing said first and second regions.
Claim 20
Dependent Claim
19 words
An apparatus according to claim 14, wherein a part of said plurality of photosensors is shielded from the light.
Claim 21
Dependent Claim
32 words
An apparatus according to claim 17, further having carrier eliminating means for preventing the movement of carriers between the light shielded photosensor and the photosensors which are not shielded from the light.
Claim 22
Dependent Claim
66 words
An apparatus according to claim 18, wherein each of said photosensors consists of a photoelectric converting transistor having a control electrode region to accumulate carriers generated by a light excitation, and said carrier eliminating means has the same constitution as said photosensors and a potential of said control electrode region is fixed to a constant potential so as to attract the carriers from said opening portion.
Claim 23
Dependent Claim
36 words
An apparatus according to claim 14, further having selecting means which can select the photosensors in a desired portion among said plurality of photosensors and control means for forming a photometric signal by said selected photosensors.
Claim 24
Dependent Claim
36 words
An apparatus according to claim 20, wherein each of said photosensors includes a photoelectric converting transistor having a control electrode region to accumulate carriers generated by the light excitation and a plurality of main electrode regions.
Claim 25
Dependent Claim
31 words
An apparatus according to claim 21, wherein said selecting means forms the photometric signal by selectively using the signal of one of the main electrode regions of each of said photosensors.
Claim 26
Dependent Claim
21 words
An apparatus according to claim 22, wherein said main electrode region which is used by said selecting means constitutes an emitter.
Claim 27
Dependent Claim
14 words
An apparatus according to claim 23, wherein said selecting means includes a switching element.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.