Patent US4576451A successfully refreshed from Google Patents.
US4576451A
Expired / Lapsed
US
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Aiming telescope
Assignee: HAKKO SEIKKI KK
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Filing: 1982-12-20
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Granted: 1986-03-18
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Expires: 2002-12-20
Abstract
Abstract An aiming telescope includes an aiming member made of clear glass which is vapor coated with a small amount of reflective film in a conventional aiming pattern. A lamp or similar illumination device projects light rays onto the aiming film so as to obtain a reflected aiming point in the field of view of the aiming telescope.
Inventors
- 👤 Katsuya Tominaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:36
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/32; F41G1/34; F41G1/345; F41G1/38; G; G02; G02B; G02B23/00; G02B23/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
An aiming telescope having an optical axis and comprising a pair of glass blocks having complementary surfaces cut at an angle of 45° and joined together; each glass block having an end surface perpendicular to the optical axis and parallel to each other; a reflective film having the shape of a reticle and centrally provided on at least one of said cut surfaces midway between said end surfaces to form an aiming pattern; said glass blocks being cemented together along said complementary surfaces; and an illuminating means positioned so that light rays are transmitted through one of the glass blocks and reflected off the reflective film in the shape of a reticle to be visible through an occular system by a user and wherein the illuminating means is positioned so that the light rays incident to the reflective film are perpendicular to the optical axis.
Claim 2
Dependent Claim
145 words
An aiming telescope having an optical axis and comprising a pair of glass blocks having complementary surfaces cut at an angle of 45° and joined together; each glass block having an end surface perpendicular to the optical axis and parallel to each other; a reflective film having the shape of a reticle and centrally provided on at least one of said cut surfaces midway between said end surfaces to form an aiming pattern; said glass blocks being cemented together along said complementary surfaces; and an illuminating means positioned so that light rays are transmitted through one of the glass blocks and reflected off the reflective film in the shape of a reticle to be visible through an occular system by a user and wherein the illuminating means is positioned so that the light rays incident to the reflective film are perpendicular to the optical axis.
Claim 3
Dependent Claim
22 words
An aiming telescope according to claim 1, wherein said reflective film defines an aiming pattern in the form of a single dot.
Claim 4
Dependent Claim
21 words
An aiming telescope according to claim 1, wherein said illuminating means comprises a lamp for projecting light on said reflective film.
Claim 5
Dependent Claim
23 words
An aiming telescope according to claim 1 wherein said illuminating means comprises a light emitting diode for projecting light on said reflective film.
Claim 6
Dependent Claim
47 words
An aiming telescope as claimed in claim 1 further comprising a colored filter positioned between the illuminating means and the reflective film so that the light reflected by the reflective film is the color of the filter whereby the aiming pattern is the color of the filter.
Claim 7
Dependent Claim
144 words
An aiming telescope having an optical axis, a user side and a subject side opposite the user side comprising: a single pair of glass blocks having complementary surfaces cut at an angle of 45° and joined together; a reflective film having the shape of a reticle and centrally provided on at least one of said cut surfaces; illuminating means positioned for transmitting light rays through one of the glass blocks and off the reflective film in the shape of a reticle to be visible through an occular system by a user wherein the illuminating means is positioned so that the light rays incident to the reflective film are perpendicular to the optical axis; occular lens means positioned on the user side of the single pair of glass blocks; and objective lens means positioned on the subject side of the single pair of glass blocks.
Claim 8
Dependent Claim
144 words
An aiming telescope having an optical axis, a user side and a subject side opposite the user side comprising: a single pair of glass blocks having complementary surfaces cut at an angle of 45° and joined together; a reflective film having the shape of a reticle and centrally provided on at least one of said cut surfaces; illuminating means positioned for transmitting light rays through one of the glass blocks and off the reflective film in the shape of a reticle to be visible through an occular system by a user wherein the illuminating means is positioned so that the light rays incident to the reflective film are perpendicular to the optical axis; occular lens means positioned on the user side of the single pair of glass blocks; and objective lens means positioned on the subject side of the single pair of glass blocks.
Claim 9
Dependent Claim
46 words
An aiming telescope as claimed in claim 6 further comprising aiming adjustment means including at least one adjustment lens positioned between the objective lens means and the single pair of glass blocks for adjustable positioning relative thereto and for varying the position of the optical axis.
Claim 10
Dependent Claim
21 words
An aiming telescope as claimed in claim 7 wherein the aiming adjustment means includes means to laterally position the adjustment lens.
Claim 11
Dependent Claim
26 words
An aiming telescope as claimed in claim 7 wherein the aiming adjustment means includes a pivotable unit of at least two spaced relatively fixed adjustment lens.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-17 | 1989-09-16 | 1990-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-17 | 1993-09-16 | 1994-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-17 | 1997-09-16 | 1998-03-18 | $7700.00 | Window Closed / Lapsed |