Invention Application
US20160057397A1 COLLIMATOR LENS, LIGHT SOURCE UNIT INCLUDING SAME COLLIMATOR LENS, AND PROJECTOR
有权
COLLIMATOR镜头，光源单元，包括相同的COLLIMATOR镜头和投影机
- Patent Title: COLLIMATOR LENS, LIGHT SOURCE UNIT INCLUDING SAME COLLIMATOR LENS, AND PROJECTOR
- Patent Title (中): COLLIMATOR镜头，光源单元，包括相同的COLLIMATOR镜头和投影机
-
Application No.: US14812185Application Date: 2015-07-29
-
Publication No.: US20160057397A1Publication Date: 2016-02-25
- Inventor: Hideyuki KUROSAKI
- Applicant: CASIO COMPUTER CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2014-168393 20140821
- Main IPC: H04N9/31
- IPC: H04N9/31 ; G03B21/20 ; G02B27/30
Abstract:
A collimator lens has an entrance portion having an elongated recess portion which incident light enters, which is formed into a recess curved inwards towards an exit direction of the incident light, with the direction of a first axis intersecting an axis of the incident light at right angles defined as a longitudinal direction and in which a recessed edge in a cross section intersecting the first axis at right angles is formed into an arc, and an exit portion from which the incident light entering the entrance portion exits and which is formed so that a curvature of an arc-shaped edge in the cross section intersecting the first axis at right angles differs from a curvature of an arc-shaped edge in a cross section intersecting at right angles a second axis intersecting the axis of the incident light and the first axis at right angles.
Public/Granted literature
- US09800847B2 Light source unit including a collimator lens, and projector including the light source unit Public/Granted day:2017-10-24
Information query
